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Author SHA1 Message Date
Leonid Bugaev 702b7b5192 Initial impl 2016-05-09 20:13:48 +05:00
1311 changed files with 3456 additions and 385385 deletions
-3
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@@ -1,3 +0,0 @@
{
"contributors": ["buger"]
}
-2
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@@ -1,3 +1 @@
*.tar.gz
gor
gor.test
-13
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@@ -1,15 +1,11 @@
*.swp
*.gor
*.rpm
*.dep
*.pkg
*.out
*.bin
*.gz
*.zip
*.class
@@ -19,12 +15,3 @@
gor
*.mprof
*.pcap
.DS_Store
goreplay
corpus
crashers
suppressions
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-5
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@@ -1,5 +0,0 @@
POST /post HTTP/1.1
Content-Length: 7
Host: www.w3.org
a=1&b=2
+3 -6
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@@ -1,9 +1,6 @@
dist: focal
language: go
go: 1.14
script: sudo -E bash -c "source /etc/profile && eval '$(gimme 1.14)' && go test ./... -v -timeout 120s"
go: 1.6
script: sudo -E bash -c "source /etc/profile && eval '$(gimme 1.6)' && export GOPATH=$HOME/gopath:$GOPATH && go get && GORACE='halt_on_error=1' go test ./... -v -timeout 120s -race"
before_install:
- sudo apt-get install libpcap-dev -y
- sudo apt-get install libpcap-dev -y
+26 -25
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@@ -2,7 +2,7 @@ END-USER LICENSE AGREEMENT
------------------------------------------------------------------------------
IMPORTANT: THIS SOFTWARE END-USER LICENSE AGREEMENT ("EULA") IS A LEGAL AGREEMENT (“Agreement”) BETWEEN YOU (THE CUSTOMER, EITHER AS AN INDIVIDUAL OR, IF PURCHASED OR OTHERWISE ACQUIRED BY OR FOR AN ENTITY, AS AN ENTITY) AND GoReplay LLC. READ IT CAREFULLY BEFORE COMPLETING THE INSTALLATION PROCESS AND USING GOREPLAY PRO AND RELATED SOFTWARE COMPONENTS (“SOFTWARE”). IT PROVIDES A LICENSE TO USE THE SOFTWARE AND CONTAINS WARRANTY INFORMATION AND LIABILITY DISCLAIMERS. BY INSTALLING AND USING THE SOFTWARE, YOU ARE CONFIRMING YOUR ACCEPTANCE OF THE SOFTWARE AND AGREEING TO BECOME BOUND BY THE TERMS OF THIS AGREEMENT.
IMPORTANT: THIS SOFTWARE END-USER LICENSE AGREEMENT ("EULA") IS A LEGAL AGREEMENT (“Agreement”) BETWEEN YOU (THE CUSTOMER, EITHER AS AN INDIVIDUAL OR, IF PURCHASED OR OTHERWISE ACQUIRED BY OR FOR AN ENTITY, AS AN ENTITY) AND REPLAY SOFTWARE. READ IT CAREFULLY BEFORE COMPLETING THE INSTALLATION PROCESS AND USING GOR PRO AND RELATED SOFTWARE COMPONENTS (“SOFTWARE”). IT PROVIDES A LICENSE TO USE THE SOFTWARE AND CONTAINS WARRANTY INFORMATION AND LIABILITY DISCLAIMERS. BY INSTALLING AND USING THE SOFTWARE, YOU ARE CONFIRMING YOUR ACCEPTANCE OF THE SOFTWARE AND AGREEING TO BECOME BOUND BY THE TERMS OF THIS AGREEMENT.
------------------------------------------------------------------------------
@@ -12,19 +12,21 @@ In order to use the Software under this Agreement, you must receive a “Source
1.1 General Use. This Agreement grants you a non-exclusive, non-transferable, limited license to the use rights for the Software, without the right to grant sublicenses, subject to the terms and conditions in this Agreement. The Software is licensed, not sold.
1.2 Unlimited Organization License. If you purchased an Organization License (included with the GoReplay Pro Software), you may install the Software on an unlimited number of Hosts. “Host” means any physical or virtual machine which is controlled by you. You may concurrently run the software on an unlimited number of Hosts.
1.2 Unlimited Organization License. If you purchased an Organization License (included with the Gor Pro Software), you may install the Software on an unlimited number of Hosts. “Host” means any physical or virtual machine which is controlled by you. You may also run an unlimited number of Workers. “Worker” means a thread within a Gor server process which executes jobs. You may concurrently run the software on an unlimited number of Hosts, with each host running an unlimited number of Workers.
1.3 Appliance License. If you purchased an Appliance License, you may distribute the Software in any applications, frameworks, or elements (collectively referred to as an “Application” or “Applications”) that you develop using the Software in accordance with this EULA, provided that such distribution does not violate the restrictions set forth in section 3 of this EULA. You must not remove, obscure or interfere with any copyright, acknowledgment, attribution, trademark, warning or disclaimer statement affixed to, incorporated in or otherwise applied in connection with the Software. You are required to ensure that the Software is not reused by or with any applications other than those with which you distribute it as permitted herein. For example, if You install the Software on a customer’s server, that customer is not permitted to use the Software independently of your Application. You must inform GoReplay LLC of your knowledge of any infringing use of the Software by any of your customers. You are liable for compliance by those third parties with the terms and conditions of this EULA. You will not owe GoReplay LLC any royalties for your distribution of the Software in accordance with this EULA.
1.3 Limited Organization License. If you purchased an Organization License (included with the Gor Enterprise Software), you may install the Software on an unlimited number of Hosts. “Host” means any physical or virtual machine which is controlled by you. The aggregate number of Workers run by the hosts must not exceed the maximum number of Workers authorized at the time of purchase. “Worker” means a running Gor instance which intercept or replay traffic. In order to run additional Workers, you must purchase an additional allowance from Replay Software.
1.4 Archive Copies. You are entitled to make a reasonable amount of copies of the Software for archival purposes. Each copy must reproduce all copyright and other proprietary rights notices on or in the Software Product.
1.4 Appliance License. If you purchased an Appliance License, you may distribute the Software in any applications, frameworks, or elements (collectively referred to as an “Application” or “Applications”) that you develop using the Software in accordance with this EULA, provided that such distribution does not violate the restrictions set forth in section 3 of this EULA. You must not remove, obscure or interfere with any copyright, acknowledgment, attribution, trademark, warning or disclaimer statement affixed to, incorporated in or otherwise applied in connection with the Software. You are required to ensure that the Software is not reused by or with any applications other than those with which you distribute it as permitted herein. For example, if You install the Software on a customer’s server, that customer is not permitted to use the Software independently of your Application. You must inform Replay Software of your knowledge of any infringing use of the Software by any of your customers. You are liable for compliance by those third parties with the terms and conditions of this EULA. You will not owe Replay Software any royalties for your distribution of the Software in accordance with this EULA.
1.5 Electronic Delivery. All Software and license documentation shall be delivered by electronic means unless otherwise specified on the applicable invoice or at the time of purchase. Software shall be deemed delivered when it is made available for download by you (“Delivery”).
1.5 Archive Copies. You are entitled to make a reasonable amount of copies of the Software for archival purposes. Each copy must reproduce all copyright and other proprietary rights notices on or in the Software Product.
2. Modifications. GoReplay LLC shall provide you with source code so that you can create Modifications of the original software. “Modification” means: (a) any addition to or deletion from the contents of a file included in the original Software or previous Modifications created by You, or (b) any new file that contains any part of the original Software or previous Modifications. While you retain all rights to any original work authored by you as part of the Modifications, We continue to own all copyright and other intellectual property rights in the Software.
1.6 Electronic Delivery. All Software and license documentation shall be delivered by electronic means unless otherwise specified on the applicable invoice or at the time of purchase. Software shall be deemed delivered when it is made available for download by you (“Delivery”).
2. Modifications. Replay Software shall provide you with source code so that you can create Modifications of the original software. “Modification” means: (a) any addition to or deletion from the contents of a file included in the original Software or previous Modifications created by You, or (b) any new file that contains any part of the original Software or previous Modifications. While you retain all rights to any original work authored by you as part of the Modifications, We continue to own all copyright and other intellectual property rights in the Software.
3. Restricted Uses.
3.1 You shall not (and shall not allow any third party to): (a) decompile, disassemble, or otherwise reverse engineer the Software or attempt to reconstruct or discover any source code, underlying ideas, algorithms, file formats or programming interfaces of the Software by any means whatsoever (except and only to the extent that applicable law prohibits or restricts reverse engineering restrictions); (b) distribute, sell, sublicense, rent, lease or use the Software for time sharing, hosting, service provider or like purposes, except as expressly permitted under this Agreement; (c) redistribute the Software or Modifications other than by including the Software or a portion thereof within your own product, which must have substantially different functionality than the Software or Modifications and must not allow any third party to use the Software or Modifications, or any portions thereof, for software development or application development purposes; (d) redistribute the Software as part of a product, "appliance" or "virtual server"; (e) redistribute the Software on any server which is not directly under your control; (f) remove any product identification, proprietary, copyright or other notices contained in the Software; (g) modify any part of the Software, create a derivative work of any part of the Software (except as permitted in Section 4), or incorporate the Software, except to the extent expressly authorized in writing by GoReplay LLC; (h) publicly disseminate performance information or analysis (including, without limitation, benchmarks) from any source relating to the Software; (i) utilize any equipment, device, software, or other means designed to circumvent or remove any form of Source URL or copy protection used by GoReplay LLC in connection with the Software, or use the Software together with any authorization code, Source URL, serial number, or other copy protection device not supplied by GoReplay LLC; (j) use the Software to develop a product which is competitive with any GoReplay LLC product offerings; or (k) use unauthorized Source URLS or keycode(s) or distribute or publish Source URLs or keycode(s), except as may be expressly permitted by GoReplay LLC in writing. If your unique Source URL is ever published, GoReplay LLC reserves the right to terminate your access without notice.
3.1 You shall not (and shall not allow any third party to): (a) decompile, disassemble, or otherwise reverse engineer the Software or attempt to reconstruct or discover any source code, underlying ideas, algorithms, file formats or programming interfaces of the Software by any means whatsoever (except and only to the extent that applicable law prohibits or restricts reverse engineering restrictions); (b) distribute, sell, sublicense, rent, lease or use the Software for time sharing, hosting, service provider or like purposes, except as expressly permitted under this Agreement; (c) redistribute the Software or Modifications other than by including the Software or a portion thereof within your own product, which must have substantially different functionality than the Software or Modifications and must not allow any third party to use the Software or Modifications, or any portions thereof, for software development or application development purposes; (d) redistribute the Software as part of a product, "appliance" or "virtual server"; (e) redistribute the Software on any server which is not directly under your control; (f) remove any product identification, proprietary, copyright or other notices contained in the Software; (g) modify any part of the Software, create a derivative work of any part of the Software (except as permitted in Section 4), or incorporate the Software, except to the extent expressly authorized in writing by Replay Software; (h) publicly disseminate performance information or analysis (including, without limitation, benchmarks) from any source relating to the Software; (i) utilize any equipment, device, software, or other means designed to circumvent or remove any form of Source URL or copy protection used by Replay Software in connection with the Software, or use the Software together with any authorization code, Source URL, serial number, or other copy protection device not supplied by Replay Software; (j) use the Software to develop a product which is competitive with any Replay Software product offerings; or (k) use unauthorized Source URLS or keycode(s) or distribute or publish Source URLs or keycode(s), except as may be expressly permitted by Replay Software in writing. If your unique Source URL is ever published, Replay Software reserves the right to terminate your access without notice.
3.2 UNDER NO CIRCUMSTANCES MAY YOU USE THE SOFTWARE AS PART OF A PRODUCT OR SERVICE THAT PROVIDES SIMILAR FUNCTIONALITY TO THE SOFTWARE ITSELF.
@@ -32,37 +34,36 @@ The Open Source version of the Software (“LGPL Version”) is licensed
under the terms of the GNU Lesser General Public License versions 3.0
(“LGPL”) and not under this EULA.
4. Ownership. Notwithstanding anything to the contrary contained herein, except for the limited license rights expressly provided herein, GoReplay LLC and its suppliers have and will retain all rights, title and interest (including, without limitation, all patent, copyright, trademark, trade secret and other intellectual property rights) in and to the Software and all copies, modifications and derivative works thereof (including any changes which incorporate any of your ideas, feedback or suggestions). You acknowledge that you are obtaining only a limited license right to the Software, and that irrespective of any use of the words “purchase”, “sale” or like terms hereunder no ownership rights are being conveyed to you under this Agreement or otherwise.
4. Ownership. Notwithstanding anything to the contrary contained herein, except for the limited license rights expressly provided herein, Replay Software and its suppliers have and will retain all rights, title and interest (including, without limitation, all patent, copyright, trademark, trade secret and other intellectual property rights) in and to the Software and all copies, modifications and derivative works thereof (including any changes which incorporate any of your ideas, feedback or suggestions). You acknowledge that you are obtaining only a limited license right to the Software, and that irrespective of any use of the words “purchase”, “sale” or like terms hereunder no ownership rights are being conveyed to you under this Agreement or otherwise.
5. Fees and Payment. The Software license fees will be due and payable in full as set forth in the applicable invoice or at the time of purchase. If the Software does not function properly within two weeks of purchase, please contact us within those two weeks for a refund. You shall be responsible for all taxes, withholdings, duties and levies arising from the order (excluding taxes based on the net income of GoReplay LLC).
5. Fees and Payment. The Software license fees will be due and payable in full as set forth in the applicable invoice or at the time of purchase. If the Software does not function properly within two weeks of purchase, please contact us within those two weeks for a refund. You shall be responsible for all taxes, withholdings, duties and levies arising from the order (excluding taxes based on the net income of Replay Software).
6. Support, Maintenance and Services. Subject to the terms and conditions of this Agreement, as set forth in your invoice, and as set forth on the GoReplay Pro support page (https://github.com/buger/goreplay/wiki/Pro-Support), support and maintenance services may be included with the purchase of your license subscription.
6. Support, Maintenance and Services. Subject to the terms and conditions of this Agreement, as set forth in your invoice, and as set forth on the Gor Pro support page (https://github.com/buger/gor/wiki/Pro-Support), support and maintenance services may be included with the purchase of your license subscription.
7. Term of Agreement.
7.1 Term. This Agreement is effective as of the Delivery of the Software and expires at such time as all license and service subscriptions hereunder have expired in accordance with their own terms (the “Term”). For clarification, the term of your license under this Agreement may be perpetual, limited for Evaluation Version, or designated as a fixed-term license in the Invoice, and shall be specified at your time of purchase. Either party may terminate this Agreement (including all related Invoices) if the other party: (a) fails to cure any material breach of this Agreement within thirty (30) days after written notice of such breach, provided that GoReplay LLC may terminate this Agreement immediately upon any breach of Section 3 or if you exceed any other restrictions contained in Section 1, unless otherwise specified in this agreement; (b) ceases operation without a successor; or (c) seeks protection under any bankruptcy, receivership, trust deed, creditors arrangement, composition or comparable proceeding, or if any such proceeding is instituted against such party (and not dismissed within sixty (60) days)). Termination is not an exclusive remedy and the exercise by either party of any remedy under this Agreement will be without prejudice to any other remedies it may have under this Agreement, by law, or otherwise.
7.1 Term. This Agreement is effective as of the Delivery of the Software and expires at such time as all license and service subscriptions hereunder have expired in accordance with their own terms (the “Term”). For clarification, the term of your license under this Agreement may be perpetual, limited for Evaluation Version, or designated as a fixed-term license in the Invoice, and shall be specified at your time of purchase. Either party may terminate this Agreement (including all related Invoices) if the other party: (a) fails to cure any material breach of this Agreement within thirty (30) days after written notice of such breach, provided that Replay Software may terminate this Agreement immediately upon any breach of Section 3 or if you exceed any other restrictions contained in Section 1, unless otherwise specified in this agreement; (b) ceases operation without a successor; or (c) seeks protection under any bankruptcy, receivership, trust deed, creditors arrangement, composition or comparable proceeding, or if any such proceeding is instituted against such party (and not dismissed within sixty (60) days)). Termination is not an exclusive remedy and the exercise by either party of any remedy under this Agreement will be without prejudice to any other remedies it may have under this Agreement, by law, or otherwise.
7.2 Termination. Upon any termination of this Agreement, you shall cease any and all use of any Software and destroy all copies thereof.
7.3 Expiration of License. Upon the expiration of any term under this Agreement, (a) all Software updates and services pursuant to the license shall cease, (b) you may only continue to run existing installations of the Software, (c) you may not install the Software on any additional Hosts, and (d) any new installation of the Software shall require the purchase of a new license subscription from GoReplay LLC.
7.3 Expiration of License. Upon the expiration of any term under this Agreement, (a) all Software updates and services pursuant to the license shall cease, (b) you may only continue to run existing installations of the Software, (c) you may not install the Software on any additional Hosts, and (d) any new installation of the Software shall require the purchase of a new license subscription from Replay Software.
8. Disclaimer of Warranties. The Software is provided "as is," with all faults, defects and errors, and without warranty of any kind. GoReplay LLC does not warrant that the Software will be free of bugs, errors, viruses or other defects, and GoReplay LLC shall have no liability of any kind for the use of or inability to use the Software, the Software content or any associated service, and you acknowledge that it is not technically practicable for GoReplay LLC to do so.
To the maximum extent permitted by applicable law, GoReplay LLC disclaims all warranties, express, implied, arising by law or otherwise, regarding the Software, the Software content and their respective performance or suitability for your intended use, including without limitation any implied warranty of merchantability, fitness for a particular purpose.
Notwithstanding the foregoing, GoReplay LLC represents and warrants that it either owns the entire right to, title to, interest in, or has the right to license, the Software, and your proper use of the same will not violate any intellectual property or proprietary rights of another.
8. Disclaimer of Warranties. The Software is provided "as is," with all faults, defects and errors, and without warranty of any kind. Replay Software does not warrant that the Software will be free of bugs, errors, viruses or other defects, and Replay Software shall have no liability of any kind for the use of or inability to use the Software, the Software content or any associated service, and you acknowledge that it is not technically practicable for Replay Software to do so.
To the maximum extent permitted by applicable law, Replay Software disclaims all warranties, express, implied, arising by law or otherwise, regarding the Software, the Software content and their respective performance or suitability for your intended use, including without limitation any implied warranty of merchantability, fitness for a particular purpose.
9. Limitation of Liability.
In no event will either party be liable for any direct, indirect, consequential, incidental, special, exemplary, or punitive damages or liabilities whatsoever arising from or relating to the Software, the Software content or this Agreement, whether based on contract, tort (including negligence), strict liability or other theory, even if such party has been advised of the possibility of such damages.
In no event will Replay Software be liable for any direct, indirect, consequential, incidental, special, exemplary, or punitive damages or liabilities whatsoever arising from or relating to the Software, the Software content or this Agreement, whether based on contract, tort (including negligence), strict liability or other theory, even if Replay Software has been advised of the possibility of such damages.
In no event will GoReplay LLC liability exceed the Software license price as indicated in the invoice. The existence of more than one claim will not enlarge or extend this limit.
In no event will Replay Software' liability exceed the Software license price as indicated in the invoice. The existence of more than one claim will not enlarge or extend this limit.
10. Remedies. Your exclusive remedy and GoReplay LLC’ entire liability for breach of this Agreement shall be limited, at GoReplay LLC’ sole and exclusive discretion, to (a) replacement of any defective software or documentation; or (b) refund of the license fee paid to GoReplay LLC, payable in accordance with GoReplay LLC' refund policy.
10. Remedies. Your exclusive remedy and Replay Software’ entire liability for breach of this Agreement shall be limited, at Replay Software’ sole and exclusive discretion, to (a) replacement of any defective software or documentation; or (b) refund of the license fee paid to Replay Software, payable in accordance with Replay Software' refund policy.
11. Acknowledgements.
11.1 Consent to the Use of Data. You agree that GoReplay LLC and its affiliates may collect and use technical information gathered as part of the product support services to be used in an anonymized manner. GoReplay LLC may use this information solely to improve products and services and will not disclose this information in a form that personally identifies you.
11.1 Consent to the Use of Data. You agree that Replay Software and its affiliates may collect and use technical information gathered as part of the product support services. Replay Software may use this information solely to improve products and services and will not disclose this information in a form that personally identifies you.
11.2 Verification. We or a certified auditor acting on our behalf, may, upon its reasonable request and at its expense, audit you with respect to the use of the Software, subject to your reasonable information security and confidentiality protections. Such audit may be conducted by mail, electronic means or through an in-person visit to your place of business. Any such in-person audit shall be conducted during regular business hours at your facilities and shall not unreasonably interfere with your business activities. We shall not remove, copy, or redistribute any electronic material during the course of an audit. If an audit reveals that you are using the Software in a way that is in material violation of the terms of the EULA, then you shall pay our reasonable costs of conducting the audit. In the case of a material violation, you agree to pay Us any amounts owing that are attributable to the unauthorized use. In the alternative, We reserve the right, at our sole option, to terminate the licenses for the Software.
11.2 Verification. We or a certified auditor acting on our behalf, may, upon its reasonable request and at its expense, audit you with respect to the use of the Software. Such audit may be conducted by mail, electronic means or through an in-person visit to your place of business. Any such in-person audit shall be conducted during regular business hours at your facilities and shall not unreasonably interfere with your business activities. We shall not remove, copy, or redistribute any electronic material during the course of an audit. If an audit reveals that you are using the Software in a way that is in material violation of the terms of the EULA, then you shall pay our reasonable costs of conducting the audit. In the case of a material violation, you agree to pay Us any amounts owing that are attributable to the unauthorized use. In the alternative, We reserve the right, at our sole option, to terminate the licenses for the Software.
11.3 Government End Users. If the Software and related documentation are supplied to or purchased by or on behalf of the United States Government, then the Software is deemed to be "commercial software" as that term is used in the Federal Acquisition Regulation system. Rights of the United States shall not exceed the minimum rights set forth in FAR 52.227-19 for "restricted computer software". All other terms and conditions of this Agreement apply.
@@ -73,13 +74,13 @@ In no event will GoReplay LLC liability exceed the Software license price as ind
13.1 Entire Agreement. This Agreement sets forth our entire agreement with respect to the Software and the subject matter hereof and supersedes all prior and contemporaneous understandings and agreements whether written or oral.
13.2 Amendment. GoReplay LLC reserves the right, in its sole discretion, to amend this Agreement from time. Amendments to this Agreement can be located at: https://github.com/buger/goreplay/blob/master/COMM-LICENSE.
13.2 Amendment. Replay Software reserves the right, in its sole discretion, to amend this Agreement from time. Amendments to this Agreement can be located at: https://github.com/buger/gor/blob/master/COMM-LICENSE.
13.3 Assignment. You may not assign this Agreement or any of its rights under this Agreement without the prior written consent of GoReplay LLC and any attempted assignment without such consent shall be void.
13.3 Assignment. You may not assign this Agreement or any of its rights under this Agreement without the prior written consent of Replay Software and any attempted assignment without such consent shall be void.
13.4 Export Compliance. Each party agrees to comply with all applicable laws and regulations, including laws, regulations, orders or other restrictions on export, re-export or redistribution of software.
13.4 Export Compliance. You agree to comply with all applicable laws and regulations, including laws, regulations, orders or other restrictions on export, re-export or redistribution of software.
13.5 Indemnification. You agree to defend, indemnify, and hold harmless GoReplay LLC from and against any lawsuits, claims, losses, damages, fines and expenses (including attorneys' fees and costs) arising out of your use of the Software or breach of this Agreement.
13.5 Indemnification. You agree to defend, indemnify, and hold harmless Replay Software from and against any lawsuits, claims, losses, damages, fines and expenses (including attorneys' fees and costs) arising out of your use of the Software or breach of this Agreement.
13.6 Governing Law. This Agreement is governed by the laws of the State of Oregon and the United States without regard to conflicts of laws provisions thereof, and without regard to the United Nations Convention on the International Sale of Goods or the Uniform Computer Information Transactions Act, as currently enacted by any jurisdiction or as may be codified or amended from time to time by any jurisdiction. The jurisdiction and venue for actions related to the subject matter hereof shall be the state of Oregon and United States federal courts located in Portland, Oregon, and both parties hereby submit to the personal jurisdiction of such courts.
@@ -91,4 +92,4 @@ In no event will GoReplay LLC liability exceed the Software license price as ind
13.10 Headings. The headings of sections and paragraphs of this Agreement are for convenience of reference only and are not intended to restrict, affect or be of any weight in the interpretation or construction of the provisions of such sections or paragraphs.
14. Contact Information. If you have any questions about this EULA, or if you want to contact GoReplay LLC for any reason, please direct correspondence to info@gortool.com
14. Contact Information. If you have any questions about this EULA, or if you want to contact Replay Software for any reason, please direct correspondence to info@gortool.com
+20 -7
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@@ -1,8 +1,21 @@
FROM alpine:latest as builder
RUN apk add --no-cache ca-certificates openssl
RUN wget https://github.com/buger/goreplay/releases/download/v1.2.0/gor_v1.2.0_x64.tar.gz -O gor.tar.gz
RUN tar xzf gor.tar.gz
FROM golang:latest
FROM scratch
COPY --from=builder /gor .
ENTRYPOINT ["./gor"]
RUN apt-get update && apt-get install ruby vim-common -y
# Install Java for middleware testing
RUN echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list
RUN echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list
RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
RUN apt-get update -y
RUN echo oracle-java7-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections
RUN apt-get install oracle-java8-installer -y
RUN apt-get install libpcap-dev -y
RUN go get github.com/google/gopacket
RUN go get -u github.com/golang/lint/golint
WORKDIR /go/src/github.com/buger/gor/
ADD . /go/src/github.com/buger/gor/
RUN javac -cp /tmp/commons-io-2.4/commons-io-2.4.jar ./examples/middleware/echo.java
RUN go get
-14
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@@ -1,14 +0,0 @@
FROM golang:1.14
RUN apt-get update && apt-get install ruby vim-common -y
RUN apt-get install flex bison -y
RUN wget http://www.tcpdump.org/release/libpcap-1.9.1.tar.gz && tar xzf libpcap-1.9.1.tar.gz && cd libpcap-1.9.1 && ./configure && make install
RUN go get github.com/google/gopacket
RUN go get -u golang.org/x/lint/golint
WORKDIR /go/src/github.com/buger/goreplay/
ADD . /go/src/github.com/buger/goreplay/
RUN go get
+3 -24
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@@ -1,28 +1,7 @@
Copyright (c) 2011-present Leonid Bugaev
Portions of this software are licensed as follows:
* All content residing under the "doc/" directory of this repository is licensed under "Creative Commons: CC BY-SA 4.0 license".
* Files with the following names "pro.go", "s3_reader.go", "output_s3.go" are released under the commercial license specified in "COMM-LICENSE" file.
* Content outside of the above mentioned directories or restrictions above is available under the "LGPLv3" license as defined below.
GoReplay is an Open Source project licensed under the terms of
Gor is an Open Source project licensed under the terms of
the LGPLv3 license. Please see <http://www.gnu.org/licenses/lgpl-3.0.html>
for license text.
As a special exception to the GNU Lesser General Public License version 3
("LGPL3"), the copyright holders of this Library give you permission to
convey to a third party a Combined Work that links statically or dynamically
to this Library without providing any Minimal Corresponding Source or
Minimal Application Code as set out in 4d or providing the installation
information set out in section 4e, provided that you comply with the other
provisions of LGPL3 and provided that you meet, for the Application the
terms and conditions of the license(s) which apply to the Application.
TLDR: You are free to use Gor subpackages like `byteutils` or `proto` in your commercial projects.
GoReplay Pro has a commercial-friendly license allowing private forks
and modifications of GoReplay. Please see https://goreplay.org/pro.html for
Gor Pro has a commercial-friendly license allowing private forks
and modifications of Gor. Please see http://gortool.com/#pro for
more detail. You can find the commercial license terms in COMM-LICENSE.
+17 -95
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@@ -1,72 +1,23 @@
SOURCE = $(shell ls -1 *.go | grep -v _test.go)
SOURCE_PATH = /go/src/github.com/buger/goreplay/
PORT = 8000
FADDR = :8000
CONTAINER=gor
PREFIX=
RUN = docker run -v `pwd`:$(SOURCE_PATH) -e AWS_ACCESS_KEY_ID=$(AWS_ACCESS_KEY_ID) -e AWS_SECRET_ACCESS_KEY=$(AWS_SECRET_ACCESS_KEY) -p 0.0.0.0:$(PORT):$(PORT) -t -i $(CONTAINER)
SOURCE = emitter.go gor.go gor_stat.go input_dummy.go input_file.go input_raw.go input_tcp.go limiter.go output_dummy.go output_file.go input_http.go output_http.go output_tcp.go plugins.go settings.go test_input.go elasticsearch.go http_modifier.go http_modifier_settings.go http_client.go middleware.go protocol.go
SOURCE_PATH = /go/src/github.com/buger/gor/
RUN = docker run -v `pwd`:$(SOURCE_PATH) -p 0.0.0.0:8000:8000 -t -i gor
BENCHMARK = BenchmarkRAWInput
TEST = TestRawListenerBench
BIN_NAME = gor
VERSION = DEV-$(shell date +%s)
LDFLAGS = -ldflags "-X main.VERSION=$(VERSION)$(PREFIX) -extldflags \"-static\" -X main.DEMO=$(DEMO)"
MAC_LDFLAGS = -ldflags "-X main.VERSION=$(VERSION)$(PREFIX) -X main.DEMO=$(DEMO)"
FADDR = ":8000"
FPMCOMMON= \
--name goreplay \
--description "GoReplay is an open-source network monitoring tool which can record your live traffic, and use it for shadowing, load testing, monitoring and detailed analysis." \
-v $(VERSION) \
--vendor "Leonid Bugaev" \
-m "<support@goreplay.org>" \
--url "https://goreplay.org" \
-s dir \
-C /tmp/gor-build \
release: release-x64 release-mac
release-bin:
docker run -v `pwd`:$(SOURCE_PATH) -t --env GOOS=linux --env GOARCH=amd64 -i $(CONTAINER) go build -o $(BIN_NAME) -tags netgo $(LDFLAGS)
release-bin-mac:
GOOS=darwin go build -o $(BIN_NAME) $(MAC_LDFLAGS)
release: release-x64
release-x64:
docker run -v `pwd`:$(SOURCE_PATH) -t --env GOOS=linux --env GOARCH=amd64 -i $(CONTAINER) go build -o $(BIN_NAME) -tags netgo $(LDFLAGS)
tar -czf gor_$(VERSION)$(PREFIX)_x64.tar.gz $(BIN_NAME)
mkdir -p /tmp/gor-build
mv ./$(BIN_NAME) /tmp/gor-build/$(BIN_NAME)
cd /tmp/gor-build
rm -f goreplay_$(VERSION)_amd64.deb
rm -f goreplay-$(VERSION)-1.x86_64.rpm
fpm $(FPMCOMMON) -a amd64 -t deb ./=/usr/local/bin
fpm $(FPMCOMMON) -a amd64 -t rpm ./=/usr/local/bin
rm -rf /tmp/gor-build
docker run -v `pwd`:$(SOURCE_PATH) -t --env GOOS=linux --env GOARCH=amd64 -i gor go build -ldflags "-X main.VERSION=$(VERSION) -extldflags \"-static\"" && tar -czf gor_$(VERSION)_x64.tar.gz gor && rm gor
release-x86:
docker run -v `pwd`:$(SOURCE_PATH) -t --env GOOS=linux --env GOARCH=386 -i $(CONTAINER) go build -o $(BIN_NAME) -tags netgo $(LDFLAGS)
tar -czf gor_$(VERSION)$(PREFIX)_x86.tar.gz $(BIN_NAME)
rm $(BIN_NAME)
release-mac:
go build -o $(BIN_NAME) $(MAC_LDFLAGS)
tar -czf gor_$(VERSION)$(PREFIX)_mac.tar.gz $(BIN_NAME)
mkdir -p /tmp/gor-build
mv ./$(BIN_NAME) /tmp/gor-build/$(BIN_NAME)
cd /tmp/gor-build
rm -f goreplay-$(VERSION).pkg
fpm $(FPMCOMMON) -a amd64 -t osxpkg ./=/usr/local/bin
rm -rf /tmp/gor-build
install:
go install $(MAC_LDFLAGS)
docker run -v `pwd`:$(SOURCE_PATH) -t --env GOOS=linux --env GOARCH=386 -i gor go build -ldflags "-X main.VERSION=$(VERSION)" && tar -czf gor_$(VERSION)_x86.tar.gz gor && rm gor
build:
docker build -t $(CONTAINER) -f Dockerfile.dev .
docker build -t gor .
profile:
go build && ./$(BIN_NAME) --output-http="http://localhost:9000" --input-dummy 0 --input-raw :9000 --input-http :9000 --memprofile=./mem.out --cpuprofile=./cpu.out --stats --output-http-stats --output-http-timeout 100ms
go build && ./gor --output-http="http://localhost:9000" --input-dummy 0 --input-raw :9000 --input-http :9000 --memprofile=./mem.out --cpuprofile=./cpu.out --stats --output-http-stats --output-http-timeout 100ms
lint:
$(RUN) golint $(PKG)
@@ -75,13 +26,13 @@ race:
$(RUN) go test ./... $(ARGS) -v -race -timeout 15s
test:
$(RUN) go test ./. -timeout 120s $(LDFLAGS) $(ARGS) -v
$(RUN) go test ./. -timeout 30s $(ARGS) -v
test_all:
$(RUN) go test ./... -timeout 120s $(LDFLAGS) $(ARGS) -v
$(RUN) go test ./... -timeout 30s $(ARGS) -v
testone:
$(RUN) go test ./. -timeout 60s $(LDFLAGS) -run $(TEST) $(ARGS) -v
$(RUN) go test ./... -timeout 4s -run $(TEST) $(ARGS) -v
cover:
$(RUN) go test $(ARGS) -race -v -timeout 15s -coverprofile=coverage.out
@@ -94,30 +45,18 @@ vet:
$(RUN) go vet
bench:
$(RUN) go test $(LDFLAGS) -v -run NOT_EXISTING -bench $(BENCHMARK) -benchtime 5s
$(RUN) go test -v -run NOT_EXISTING -bench $(BENCHMARK) -benchtime 5s
profile_test:
$(RUN) go test $(LDFLAGS) -run $(TEST) ./capture/. $(ARGS) -memprofile mem.mprof -cpuprofile cpu.out
$(RUN) go test $(LDFLAGS) -run $(TEST) ./capture/. $(ARGS) -c
$(RUN) go test $(LDFLAGS) -run $(TEST) ./raw_socket_listener/. $(ARGS) -memprofile mem.mprof -cpuprofile cpu.out
$(RUN) go test $(LDFLAGS) -run $(TEST) ./raw_socket_listener/. $(ARGS) -c
# Used mainly for debugging, because docker container do not have access to parent machine ports
run:
$(RUN) go run $(LDFLAGS) $(SOURCE) --input-dummy=0 --output-http="http://localhost:9000" --input-raw-track-response --input-raw 127.0.0.1:9000 --verbose --debug --middleware "./examples/middleware/echo.sh" --output-file requests.gor
$(RUN) go run $(SOURCE) --input-dummy=0 --output-http="http://localhost:9000" --input-raw :9000 --input-http :9000 --verbose --debug --middleware "./examples/middleware/echo.sh"
run-2:
$(RUN) go run $(LDFLAGS) $(SOURCE) --input-raw :8000 --input-raw-bpf-filter "dst port 8000" --output-stdout --output-http "http://localhost:8000" --input-dummy=0
run-3:
sudo -E go run $(SOURCE) --input-tcp :27001 --output-stdout
run-arg:
sudo -E go run $(SOURCE) $(ARGS)
file-server:
go run $(SOURCE) file-server $(FADDR)
readpcap:
go run $(SOURCE) --input-raw $(FILE) --input-raw-track-response --input-raw-engine pcap_file --output-stdout
$(RUN) go run $(SOURCE) --input-file ./fixtures/requests.gor --output-dummy=0
record:
$(RUN) go run $(SOURCE) --input-dummy=0 --output-file=requests.gor --verbose --debug
@@ -127,20 +66,3 @@ replay:
bash:
$(RUN) /bin/bash
FPMCOMMON= \
--name goreplay \
--description "GoReplay is an open-source network monitoring tool which can record your live traffic, and use it for shadowing, load testing, monitoring and detailed analysis." \
-v $(VERSION) \
--vendor "Leonid Bugaev" \
-m "<support@goreplay.org>" \
--url "https://goreplay.org" \
-s dir \
-C /tmp/gor-build \
build_packages:
mkdir -p /tmp/gor-build
go build -i -o /tmp/gor-build/$(BIN_NAME)
fpm $(FPMCOMMON) -a amd64 -t deb ./=/usr/local/bin
fpm $(FPMCOMMON) -a amd64 -t rpm ./=/usr/local/bin
+459 -35
View File
@@ -1,48 +1,476 @@
[![GitHub release](https://img.shields.io/github/release/buger/gor.svg?maxAge=3600)](https://github.com/buger/goreplay/releases) [![codebeat](https://codebeat.co/badges/6427d589-a78e-416c-a546-d299b4089893)](https://codebeat.co/projects/github-com-buger-gor) [![Go Report Card](https://goreportcard.com/badge/github.com/buger/gor)](https://goreportcard.com/report/github.com/buger/gor) [![Join the chat at https://gitter.im/buger/gor](https://badges.gitter.im/buger/gor.svg)](https://gitter.im/buger/gor?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![Reviewed by Hound](https://img.shields.io/badge/Reviewed_by-Hound-8E64B0.svg)](https://houndci.com)
![Go Replay](http://i.imgur.com/ZG2ki5n.png)
## https://goreplay.org/
GoReplay is an open-source network monitoring tool which can record your live traffic, and use it for shadowing, load testing, monitoring and detailed analysis.
[![GitHub release](https://img.shields.io/github/release/buger/gor.svg?maxAge=3600)](https://github.com/buger/gor/releases) [![codebeat](https://codebeat.co/badges/6427d589-a78e-416c-a546-d299b4089893)](https://codebeat.co/projects/github-com-buger-gor) [![Go Report Card](https://goreportcard.com/badge/github.com/buger/gor)](https://goreportcard.com/report/github.com/buger/gor) [![Join the chat at https://gitter.im/buger/gor](https://badges.gitter.im/buger/gor.svg)](https://gitter.im/buger/gor?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
## About
As your application grows, the effort required to test it also grows exponentially. GoReplay offers you the simple idea of reusing your existing traffic for testing, which makes it incredibly powerful. Our state of art technique allows you to analyze and record your application traffic without affecting it. This eliminates the risks that come with putting a third party component in the critical path.
GoReplay increases your confidence in code deployments, configuration and infrastructure changes.
Gor is an open-source tool for capturing and replaying live HTTP traffic into a test environment in order to continuously test your system with real data. It can be used to increase confidence in code deployments, configuration changes and infrastructure changes.
GoReplay offers unique approach for shadowing. Instead of being a proxy, GoReplay in background listen for traffic on your network interface, requiring no changes in your production infrastructure, rather then running GoReplay daemon on the same machine as your service.
Now you can test your code on real user sessions in an automated and repeatable fashion.
**No more falling down in production!**
![Diagram](https://i.imgur.com/IN2xfDm.png)
Here is basic workflow: The listener server catches http traffic and sends it to the replay server or saves to file. The replay server forwards traffic to a given address.
Check [latest documentation](http://github.com/buger/goreplay/wiki).
## Installation
Download latest binary from https://github.com/buger/goreplay/releases or [compile by yourself](https://github.com/buger/goreplay/wiki/Compilation).
## Getting started
The most basic setup will be `sudo ./gor --input-raw :8000 --output-stdout` which acts like tcpdump.
If you already have test environment you can start replaying: `sudo ./gor --input-raw :8000 --output-http http://staging.env`.
See the our [documentation](https://github.com/buger/goreplay/wiki/) and [Getting started](https://github.com/buger/goreplay/wiki/Getting-Started) page for more info.
## Newsletter
Subscribe to our [newsletter](https://www.getdrip.com/forms/89690474/submissions/new) to stay informed about the latest features and changes to Gor project.
![Diagram](http://i.imgur.com/9mqj2SK.png)
## Want to Upgrade?
We have created a [GoReplay PRO](https://goreplay.org/pro.html) extension which provides additional features such as support for binary protocols like Thrift or ProtocolBuffers, saving and replaying from cloud storage, TCP sessions replication, etc. The PRO version also includes a commercial-friendly license, dedicated support, and it also allows you to support high-quality open source development.
I also sell Gor Pro, extensions to Gor which provide more features, a commercial-friendly license and allow you to support high quality open source development all at the same time. Please see the Gor [homepage](https://gortool.com/) for more detail.
Subscribe to the [quarterly newsletter](https://tinyletter.com/gor) to stay informed about the latest features and changes to Gor and its bigger siblings.
## Problems?
If you have a problem, please review the [FAQ](https://github.com/buger/goreplay/wiki/FAQ) and [Troubleshooting](https://github.com/buger/goreplay/wiki/Troubleshooting) wiki pages. Searching the [issues](https://github.com/buger/goreplay/issues) for your problem is also a good idea.
## Examples
All bug-reports and suggestions should go through Github Issues or our [Google Group](https://groups.google.com/forum/#!forum/gor-users) (you can just send email to gor-users@googlegroups.com).
If you have a private question feel free to send email to support@gortool.com.
### Capture traffic from port
```bash
# Run on servers where you want to catch traffic. You can run it on each `web` machine.
sudo gor --input-raw 127.0.0.1:80 --output-tcp replay.local:28020
# Replay server (replay.local).
gor --input-tcp replay.local:28020 --output-http http://staging.com
```
Since Gor use raw sockets to capture traffic it require `sudo` access. Alternatively you can allow access to raw sockets like this: `sudo setcap CAP_NET_RAW=ep gor`
### Using 1 Gor instance for both listening and replaying
It's recommended to use separate server for replaying traffic, but if you have enough CPU resources you can use single Gor instance.
```
sudo gor --input-raw 127.0.0.1:80 --output-http "http://staging.com"
```
## Configuration
### Forward to multiple addresses
You can forward traffic to multiple endpoints. Just add multiple --output-* arguments.
```
gor --input-tcp :28020 --output-http "http://staging.com" --output-http "http://dev.com"
```
#### Splitting traffic
By default it will send same traffic to all outputs, but you have options to equally split it:
```
gor --input-tcp :28020 --output-http "http://staging.com" --output-http "http://dev.com" --split-output true
```
### HTTP output workers
By default Gor creates a dynamic pool of workers: it starts with 10 and creates more http output workers when the http output queue length is greater than 10. The number of workers created (N) is equal to the queue length at the time which it is checked and found to have a length greater than 10. The queue length is checked every time a message is written to the http output queue. No more workers will be spawned until that request to spawn N workers is satisfied. If a dynamic worker cannot process a message at that time, it will sleep for 100 milliseconds. If a dynamic worker cannot process a message for 2 seconds it dies.
You may specify fixed number of workers using `--output-http-workers=20` option.
### Follow redirects
By default Gor will ignore all redirects since they are handled by clients using your app, but in scenarios where your replayed environment introduces new redirects, you can enable them like this:
```
gor --input-tcp replay.local:28020 --output-http http://staging.com --output-http-redirects 2
```
The given example will follow up to 2 redirects per request.
### HTTP timeouts
By default http timeout for both request and response is 5 seconds. You can override it like this:
```
gor --input-tcp replay.local:28020 --output-http http://staging.com --output-http-timeout 30s
```
### Rate limiting
Rate limiting can be useful if you only want to forward parts of production traffic and not overload your staging environment. There are 2 strategies: dropping random requests or dropping fractions of requests based on Header or URL param value.
#### Dropping random requests
Every input and output supports random rate limiting.
There are 2 limiting algorithms: absolute or percentage based.
Absolute: If for current second it reached specified requests limit - disregard the rest, on next second counter reseted.
Percentage: For input-file it will slowdown or speedup request execution, for the rest it will use random generator to decide if request pass or not based on chance you specified.
You can specify your desired limit using the
"|" operator after the server address:
#### Limiting replay using absolute number
```
# staging.server will not get more than 10 requests per second
gor --input-tcp :28020 --output-http "http://staging.com|10"
```
#### Limiting listener using percentage based limiter
```
# replay server will not get more than 10% of requests
# useful for high-load environments
gor --input-raw 127.0.0.1:80 --output-tcp "replay.local:28020|10%"
```
#### Limiting based on Header or URL param value
If you have unique user id (like API key) stored in header or URL you can consistently forward specified percent of traffic only for fraction of this users.
Basic formula looks like this: `FNV32-1A_hashing(value) % 100 >= chance`. Examples:
```
# Limit based on header value
gor --input-raw 127.0.0.1:80 --output-tcp "replay.local:28020|10%" --http-header-limiter "X-API-KEY: 10%"
# Limit based on header value
gor --input-raw 127.0.0.1:80 --output-tcp "replay.local:28020|10%" --http-param-limiter "api_key: 10%"
```
Only percentage based limiting supported.
### Filtering
#### Allow url regexp
```
# only forward requests being sent to the /api endpoint
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-allow-url /api
```
#### Disallow url regexp
```
# only forward requests NOT being sent to the /api... endpoint
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-disallow-url /api
```
#### Filter based on regexp of header
```
# only forward requests with an api version of 1.0x
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-allow-header api-version:^1\.0\d
# only forward requests NOT containing User-Agent header value "Replayed by Gor"
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-disallow-header "User-Agent: Replayed by Gor"
```
#### Filter based on http method
Requests not matching a specified whitelist can be filtered out. For example to strip non-nullipotent requests:
```
gor --input-raw 127.0.0.1:80 --output-http "http://staging.server" \
--http-allow-method GET \
--http-allow-method OPTIONS
```
### Rewriting original request
Gor supports some basic request rewriting support. For complex logic you can use middleware, see below.
#### Rewrite URL based on a mapping
```
# rewrite url to match the following
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-rewrite-url /v1/user/([^\\/]+)/ping:/v2/user/$1/ping
```
#### Set URL param
Set request url param, if param already exists it will be overwritten
```
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-set-param api_key=1
```
#### Set Header
Set request header, if header already exists it will be overwritten. This may be useful if you need to identify requests generated by Gor or enable feature flagged functionality in an application:
```
gor --input-raw 127.0.0.1:80 --output-http "http://staging.server" \
--http-header "User-Agent: Replayed by Gor" \
--http-header "Enable-Feature-X: true"
```
#### Host header
Host header gets special treatment. By default Host get set to the value specified in --output-http. If you manually set --http-header "Host: anonther.com", Gor will not override Host value.
If you app accepts traffic from multiple domain, and you want to keep original headers, there is specific `--http-original-host` with tells Gor do not touch Host header at all.
### Middleware
Middleware is a program that accepts request and response payload at STDIN and emits modified requests at STDOUT. You can implement any custom logic like stripping private data, advanced rewriting, support for oAuth and etc.
```
Original request +--------------+
+-------------+----------STDIN---------->+ |
| Gor input | | Middleware |
+-------------+----------STDIN---------->+ |
Original response +------+---+---+
| ^
+-------------+ Modified request v |
| Gor output +<---------STDOUT-----------------+ |
+-----+-------+ |
| |
| Replayed response |
+------------------STDIN----------------->----+
```
Middleware can be written in any language, see `examples/middleware` folder for examples.
Middleware program should accept the fact that all communication with Gor is asynchronous, there is no guarantee that original request and response messages will come one after each other. Your app should take care of the state if logic depends on original or replayed response, see `examples/middleware/token_modifier.go` as example.
Simple bash echo middleware (returns same request) will look like this:
```bash
while read line; do
echo $line
end
```
Middleware can be enabled using `--middleware` option, by specifying path to executable file:
```
gor --input-raw 127.0.0.1:80 --middleware "/opt/middleware_executable" --output-http "http://staging.server"
```
#### Communication protocol
All messages should be hex encoded, new line character specifieds the end of the message, eg. new message per line.
Decoded payload consist of 2 parts: header and HTTP payload, separated by new line character.
Example request payload:
```
1 932079936fa4306fc308d67588178d17d823647c 1439818823587396305
GET /a HTTP/1.1
Host: 127.0.0.1
```
Example response payload:
```
2 8e091765ae902fef8a2b7d9dd960e9d52222bd8c 2782013
HTTP/1.1 200 OK
Date: Mon, 17 Aug 2015 13:40:23 GMT
Content-Length: 0
Content-Type: text/plain; charset=utf-8
```
Header contains request meta information separated by spaces. First value is payload type, possible values: `1` - request, `2` - original response, `3` - replayed response.
Next goes request id: unique among all requests (sha1 of time and Ack), but remain same for original and replayed response, so you can create associations between request and responses. Third argument varies depending on payload type: for request - start time, for responses - round-trip time.
HTTP payload is unmodified HTTP requests/responses intercepted from network. You can read more about request format [here](http://www.jmarshall.com/easy/http/), [here](https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol) and [here](http://www.w3.org/Protocols/rfc2616/rfc2616.html). You can operate with payload as you want, add headers, change path, and etc. Basically you just editing a string, just ensure that it is RCF compliant.
At the end modified (or untouched) request should be emitted back to STDOUT, keeping original header, and hex-encoded. If you want to filter request, just not send it. Emitting responses back is required, even if you did not touch them.
#### Advanced example
Imagine that you have auth system that randomly generate access tokens, which used later for accessing secure content. Since there is no pre-defined token value, naive approach without middleware (or if middleware use only request payloads) will fail, because replayed server have own tokens, not synced with origin. To fix this, our middleware should take in account responses of replayed and origin server, store `originalToken -> replayedToken` aliases and rewrite all requests using this token to use replayed alias. See `examples/middleware/token_modifier.go` and `middleware_test.go#TestTokenMiddleware` as example of described scheme.
### Saving requests to file and replaying them
You can save requests to file, and replay them later:
```
# write to file
gor --input-raw 127.0.0.1:80 --output-file requests.gor
# read from file
gor --input-file requests.gor --output-http "http://staging.com"
```
**Note:** Replay will preserve the original time differences between requests.
### Load testing
Currently it supported only by `input-file` and only when using percentage based limiter. Unlike default limiter for `input-file` instead of dropping requests it will slowdown or speedup request emitting. Note that unlike examples above limiter is applied to input:
```
# Replay from file on 2x speed
gor --input-file "requests.gor|200%" --output-http "staging.com"
```
### Basic Auth
If your development or staging environment is protected by Basic Authentication then those credentials can be injected in during the replay:
```
gor --input-raw 127.0.0.1:80 --output-http "http://user:pass@staging .com"
```
Note: This will overwrite any Authorization headers in the original request.
### Traffic interception engine
By default Gor use `libpcap` for intercepting traffic. If you have any troubles with it, you may try alternative engine: `raw_socket`.
```
sudo gor --input-raw 127.0.0.1:80 --input-raw-engine "libpcap" --output-http "http://staging.com"
```
## Stats
Gor can report stats on the `output-tcp` and `output-http` request queues. Stats are reported to the console every 5 seconds in the form `latest,mean,max,count,count/second` by using the `--output-http-stats` and `--output-tcp-stats` options.
Examples:
```
2014/04/23 21:17:50 output_tcp:latest,mean,max,count,count/second
2014/04/23 21:17:50 output_tcp:0,0,0,0,0
2014/04/23 21:17:55 output_tcp:1,1,2,68,13
2014/04/23 21:18:00 output_tcp:1,1,2,92,18
2014/04/23 21:18:05 output_tcp:1,1,2,119,23
```
```
Version: 0.8
2014/04/23 21:19:46 output_http:latest,mean,max,count,count/second
2014/04/23 21:19:46 output_http:0,0,0,0,0
2014/04/23 21:19:51 output_http:0,0,0,0,0
2014/04/23 21:19:56 output_http:0,0,0,0,0
2014/04/23 21:20:01 output_http:1,0,1,50,10
2014/04/23 21:20:06 output_http:1,1,4,72,14
2014/04/23 21:20:11 output_http:1,0,1,179,35
2014/04/23 21:20:16 output_http:1,0,1,148,29
2014/04/23 21:20:21 output_http:1,1,2,91,18
2014/04/23 21:20:26 output_http:1,1,2,150,30
2014/04/23 21:18:15 output_http:100,99,100,70,14
2014/04/23 21:18:21 output_http:100,99,100,55,11
```
### How can I tell if I have bottlenecks?
Key areas that sometimes experience bottlenecks are the output-tcp and output-http functions which have internal queues for requests. Each queue has an upper limit of 100. Enable stats reporting to see if any queues are experiencing bottleneck behavior.
#### output-http bottlenecks
When running a Gor replay the output-http feature may bottleneck if:
* the replay has inadequate bandwidth. If the replay is receiving or sending more messages than its network adapter can handle the output-http-stats may report that the output-http queue is filling up. See if there is a way to upgrade the replay's bandwidth.
* with `--output-http-workers` set to anything other than `-1` the `-output-http` target is unable to respond to messages in a timely manner. The http output workers which take messages off the output-http queue, process the request, and ensure that the request did not result in an error may not be able to keep up with the number of incoming requests. If the replay is not using dynamic worker scaling (`--output-http-workers=-1`) The optimal number of output-http-workers can be determined with the formula `output-workers = (Average number of requests per second)/(Average target response time per second)`.
#### output-tcp bottlenecks
When using the Gor listener the output-tcp feature may bottleneck if:
* the replay is unable to accept and process more requests than the listener is able generate. Prior to troubleshooting the output-tcp bottleneck, ensure that the replay target is not experiencing any bottlenecks.
* the replay target has inadequate bandwidth to handle all its incoming requests. If a replay target's incoming bandwidth is maxed out the output-tcp-stats may report that the output-tcp queue is filling up. See if there is a way to upgrade the replay's bandwidth.
### ElasticSearch
For deep response analyze based on url, cookie, user-agent and etc. you can export response metadata to ElasticSearch. See [ELASTICSEARCH.md](ELASTICSEARCH.md) for more details.
```
gor --input-tcp :80 --output-http "http://staging.com" --output-http-elasticsearch "es_host:api_port/index_name"
```
## Additional help
Feel free to ask question directly by email or by creating github issue.
## Latest releases (including binaries)
https://github.com/buger/gor/releases
## Command line reference
`gor -h` output:
```
-http-allow-header=[]: A regexp to match a specific header against. Requests with non-matching headers will be dropped:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-allow-header api-version:^v1
-http-disallow-header=[]: A regexp to match a specific header against. Requests with matching headers will be dropped:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-disallow-header "User-Agent: Replayed by Gor"
-http-allow-method=[]: Whitelist of HTTP methods to replay. Anything else will be dropped:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-allow-method GET --http-allow-method OPTIONS
-http-allow-url=[]: A regexp to match requests against. Filter get matched agains full url with domain. Anything else will be dropped:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-allow-url ^www.
-http-disallow-url=[]: A regexp to match requests against. Filter get matched agains full url with domain. Anything else will be forwarded:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-disallow-url ^www.
-http-header-limiter=[]: Takes a fraction of requests, consistently taking or rejecting a request based on the FNV32-1A hash of a specific header:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-header-imiter user-id:25%
-http-param-limiter=[]: Takes a fraction of requests, consistently taking or rejecting a request based on the FNV32-1A hash of a specific GET param:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-param-limiter user_id:25%
-http-rewrite-url=[]: Rewrite the request url based on a mapping:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-rewrite-url /v1/user/([^\/]+)/ping:/v2/user/$1/ping
-http-set-header=[]: Inject additional headers to http reqest:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-set-header 'User-Agent: Gor'
-http-set-param=[]: Set request url param, if param already exists it will be overwritten:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --http-set-param api_key=1
-input-dummy=[]: Used for testing outputs. Emits 'Get /' request every 1s
-input-file=[]: Read requests from file:
gor --input-file ./requests.gor --output-http staging.com
-input-http=[]: Read requests from HTTP, should be explicitly sent from your application:
# Listen for http on 9000
gor --input-http 127.0.0.1:9000 --output-http staging.com
-input-raw=[]: Capture traffic from given port (use RAW sockets and require *sudo* access):
# Capture traffic from 8080 port
gor --input-raw 127.0.0.1:8080 --output-http staging.com
-input-tcp=[]: Used for internal communication between Gor instances. Example:
# Receive requests from other Gor instances on 28020 port, and redirect output to staging
gor --input-tcp :28020 --output-http staging.com
-memprofile="": write memory profile to this file
-output-dummy=[]: Used for testing inputs. Just prints data coming from inputs.
-output-file=[]: Write incoming requests to file:
gor --input-raw 127.0.0.1:80 --output-file ./requests.gor
-output-http=[]: Forwards incoming requests to given http address.
# Redirect all incoming requests to staging.com address
gor --input-raw 127.0.0.1:80 --output-http http://staging.com
-output-http-elasticsearch="": Send request and response stats to ElasticSearch:
gor --input-raw 127.0.0.1:8080 --output-http staging.com --output-http-elasticsearch 'es_host:api_port/index_name'
-output-http-header-filter=[]: WARNING: `--output-http-header-filter` DEPRECATED, use `--http-allow-header` instead
-output-http-redirects=0: Enable how often redirects should be followed.
-output-http-stats=false: Report http output queue stats to console every 5 seconds. Remember to include also `--stats`
-output-http-workers=0: Gor uses dynamic worker scaling by default. Enter a number to run a set number of workers.
-output-tcp=[]: Used for internal communication between Gor instances. Example:
# Listen for requests on 80 port and forward them to other Gor instance on 28020 port
gor --input-raw 127.0.0.1:80 --output-tcp replay.local:28020
-output-tcp-stats=false: Report TCP output queue stats to console every 5 seconds. Remember to include also `--stats`
-split-output=false: By default each output gets same traffic. If set to `true` it splits traffic equally among all outputs.
-stats=false: Turn on queue stats output. Use in combination with the other *-stats flags.
-verbose=false: Turn on verbose/debug output
```
## Building from source
1. Setup standard Go environment http://golang.org/doc/code.html and ensure that $GOPATH environment variable properly set.
2. `go get github.com/buger/gor`.
3. `cd $GOPATH/src/github.com/buger/gor`
4. `go build` to get binary, or `go test` to run tests
## Development
Project contains Docker environment.
1. Build container: `make dbuild`
2. Run all tests: `make dtest`. Run specific test: `make dtest ARGS=-test.run=**regexp**`
3. Bash access to container: `make dbash`. Inside container you have python to run simple web server `python -m SimpleHTTPServer 8080` and `curl` to make http requests.
## Questions and support
All bug-reports and suggestions should go though Github Issues or our [Google Group](https://groups.google.com/forum/#!forum/gor-users). Or you can just send email to gor-users@googlegroups.com
If you have some private questions you can send direct mail to leonsbox@gmail.com
## FAQ
### What OS are supported?
For now only Linux based. *BSD (including MacOS is not supported yet, check https://github.com/buger/gor/issues/22 for details)
### Why does the `--input-raw` requires sudo or root access?
Listener works by sniffing traffic from a given port. It's accessible
only by using sudo or root access.
### How do you deal with user session to replay the traffic correctly?
You can rewrite session related headers/params to match your staging environment. If you require custom logic (e.g random token based auth) follow this discussion: https://github.com/buger/gor/issues/154
### Can i use Gor to intercept SSL traffic?
Basic idea is that SSL was made to protect itself from traffic interception. There 2 options:
1. Move SSL handling to proxy like Nginx or Amazon ELB. And allow Gor to listen on upstreams.
2. Use `--input-http` so you can duplicate request payload directly from your app to Gor, but it will require your app modifications.
More can be find here: https://github.com/buger/gor/issues/85
### Is there a limit for size of HTTP request when using output-http?
Due to the fact that Gor can't guarantee interception of all packets, for large payloads > 200kb there is chance of missing some packets and corrupting body. Treat it as a feature and chance to test broken bodies handling :)
The only way to guarantee delivery is using `--input-http`, but you will miss some features.
### I'm getting 'too many open files' error
Typical linux shell has a small open files soft limit at 1024. You can easily raise that when you do this before starting your gor replay process:
ulimit -n 64000
More about ulimit: http://www.thecodingmachine.com/solving-the-too-many-open-files-exception-in-red5-or-any-other-application/
### The CPU average across my load-balanced targets is higher than the source
If you are replaying traffic from multiple listeners to a load-balanced target and you use sticky sessions, you may observe that the target servers have a higher CPU load than the listener servers. This may be because the sticky session cookie of the original load balancer is not honored by the target load balancer thus resulting in requests that would normally hit the same target server hitting different servers on the backend thus reducing some caching benefits gained via the load balancing. Try running just one listener against one replay target and see if the CPU utilization comparison is more accurate.
## Tuning
To achieve the top most performance you should tune the source server system limits:
net.ipv4.tcp_max_tw_buckets = 65536
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 0
net.ipv4.tcp_max_syn_backlog = 131072
net.ipv4.tcp_syn_retries = 3
net.ipv4.tcp_synack_retries = 3
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_retries2 = 8
net.ipv4.tcp_rmem = 16384 174760 349520
net.ipv4.tcp_wmem = 16384 131072 262144
net.ipv4.tcp_mem = 262144 524288 1048576
net.ipv4.tcp_max_orphans = 65536
net.ipv4.tcp_fin_timeout = 10
net.ipv4.tcp_low_latency = 1
net.ipv4.tcp_syncookies = 0
## Contributing
@@ -66,8 +494,4 @@ If you have a private question feel free to send email to support@gortool.com.
* [Granify](http://granify.com) - AI backed SaaS solution that enables online retailers to maximise their sales
* And many more!
If you are using Gor, we are happy to add you to the list and share your story, just write to: hello@goreplay.org
## Author
Leonid Bugaev, [@buger](https://twitter.com/buger), https://leonsbox.com
If you are using Gor we are happy add you to the list and share your story, just write to: leonsbox@gmail.com
+5 -17
View File
@@ -1,10 +1,6 @@
// Package byteutils provides helpers for working with byte slices
// Package byteutils probvides helpers for working with byte slices
package byteutils
import (
"unsafe"
)
// Cut elements from slice for a given range
func Cut(a []byte, from, to int) []byte {
copy(a[from:], a[to:])
@@ -33,20 +29,12 @@ func Replace(a []byte, from, to int, new []byte) []byte {
copy(a[from:from+len(new)], new)
return a
}
if lenDiff < 0 {
} else if lenDiff < 0 {
copy(a[from:], new)
copy(a[from+len(new):], a[to:])
return a[:len(a)+lenDiff]
} else { // same size
copy(a[from:], new)
return a
}
// same size
copy(a[from:], new)
return a
}
// SliceToString preferred for large body payload (zero allocation and faster)
func SliceToString(buf []byte) string {
return *(*string)(unsafe.Pointer(&buf))
}
-9
View File
@@ -30,12 +30,3 @@ func TestReplace(t *testing.T) {
t.Error("Should replace when replacement length bigger")
}
}
func BenchmarkStringtoSlice(b *testing.B) {
var s string
var buf [1 << 20]byte
for i := 0; i < b.N; i++ {
s = SliceToString(buf[:])
}
_ = s // avoid gc to optimize away the loop body
}
-500
View File
@@ -1,500 +0,0 @@
package capture
import (
"context"
"errors"
"fmt"
"net"
"os"
"runtime"
"sync"
"time"
"github.com/buger/goreplay/size"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"github.com/google/gopacket/pcap"
)
// Handler is a function that is used to handle packets
type Handler func(gopacket.Packet)
// PcapOptions options that can be set on a pcap capture handle,
// these options take effect on inactive pcap handles
type PcapOptions struct {
BufferTimeout time.Duration `json:"input-raw-buffer-timeout"`
TimestampType string `json:"input-raw-timestamp-type"`
BPFFilter string `json:"input-raw-bpf-filter"`
BufferSize size.Size `json:"input-raw-buffer-size"`
Promiscuous bool `json:"input-raw-promisc"`
Monitor bool `json:"input-raw-monitor"`
Snaplen bool `json:"input-raw-override-snaplen"`
}
// NetInterface represents network interface
type NetInterface struct {
net.Interface
IPs []string
}
// Listener handle traffic capture, this is its representation.
type Listener struct {
sync.Mutex
Transport string // transport layer default to tcp
Activate func() error // function is used to activate the engine. it must be called before reading packets
Handles map[string]gopacket.PacketDataSource
Interfaces []NetInterface
loopIndex int
Reading chan bool // this channel is closed when the listener has started reading packets
PcapOptions
Engine EngineType
port uint16 // src or/and dst port
trackResponse bool
host string // pcap file name or interface (name, hardware addr, index or ip address)
quit chan bool
packets chan gopacket.Packet
}
// EngineType ...
type EngineType uint8
// Available engines for intercepting traffic
const (
EnginePcap EngineType = 1 << iota
EnginePcapFile
EngineRawSocket
)
// Set is here so that EngineType can implement flag.Var
func (eng *EngineType) Set(v string) error {
switch v {
case "", "libpcap":
*eng = EnginePcap
case "pcap_file":
*eng = EnginePcapFile
case "raw_socket", "af_packet":
*eng = EngineRawSocket
default:
return fmt.Errorf("invalid engine %s", v)
}
return nil
}
func (eng *EngineType) String() (e string) {
switch *eng {
case EnginePcapFile:
e = "pcap_file"
case EnginePcap:
e = "libpcap"
case EngineRawSocket:
e = "raw_socket"
default:
e = ""
}
return e
}
// NewListener creates and initialize a new Listener. if transport or/and engine are invalid/unsupported
// is "tcp" and "pcap", are assumed. l.Engine and l.Transport can help to get the values used.
// if there is an error it will be associated with getting network interfaces
func NewListener(host string, port uint16, transport string, engine EngineType, trackResponse bool) (l *Listener, err error) {
l = &Listener{}
l.host = host
l.port = port
l.Transport = "tcp"
if transport != "" {
l.Transport = transport
}
l.Handles = make(map[string]gopacket.PacketDataSource)
l.trackResponse = trackResponse
l.packets = make(chan gopacket.Packet, 1000)
l.quit = make(chan bool, 1)
l.Reading = make(chan bool, 1)
switch engine {
default:
l.Engine = EnginePcap
l.Activate = l.activatePcap
case EngineRawSocket:
l.Engine = EngineRawSocket
l.Activate = l.activateRawSocket
case EnginePcapFile:
l.Engine = EnginePcapFile
l.Activate = l.activatePcapFile
return
}
err = l.setInterfaces()
if err != nil {
return nil, err
}
return
}
// SetPcapOptions set pcap options for all yet to be actived pcap handles
// setting this on already activated handles will not have any effect
func (l *Listener) SetPcapOptions(opts PcapOptions) {
l.PcapOptions = opts
}
// Listen listens for packets from the handles, and call handler on every packet received
// until the context done signal is sent or EOF on handles.
// this function should be called after activating pcap handles
func (l *Listener) Listen(ctx context.Context, handler Handler) (err error) {
l.read()
done := ctx.Done()
var p gopacket.Packet
var ok bool
for {
select {
case <-done:
l.quit <- true
close(l.quit)
err = ctx.Err()
done = nil
case p, ok = <-l.packets:
if !ok {
return
}
if p == nil {
continue
}
handler(p)
}
}
}
// ListenBackground is like listen but can run concurrently and signal error through channel
func (l *Listener) ListenBackground(ctx context.Context, handler Handler) chan error {
err := make(chan error, 1)
go func() {
defer close(err)
if e := l.Listen(ctx, handler); err != nil {
err <- e
}
}()
return err
}
// Filter returns automatic filter applied by goreplay
// to a pcap handle of a specific interface
func (l *Listener) Filter(ifi NetInterface) (filter string) {
// https://www.tcpdump.org/manpages/pcap-filter.7.html
port := fmt.Sprintf("portrange 0-%d", 1<<16-1)
if l.port != 0 {
port = fmt.Sprintf("port %d", l.port)
}
dir := " dst " // direction
if l.trackResponse {
dir = " "
}
filter = fmt.Sprintf("(%s%s%s)", l.Transport, dir, port)
if listenAll(l.host) || isDevice(l.host, ifi) {
return
}
filter = fmt.Sprintf("(%s%s%s and host %s)", l.Transport, dir, port, l.host)
return
}
// PcapDumpHandler returns a handler to write packet data in PCAP
// format, See http://wiki.wireshark.org/Development/LibpcapFileFormathandler.
// if link layer is invalid Ethernet is assumed
func PcapDumpHandler(file *os.File, link layers.LinkType, debugger func(int, ...interface{})) (handler func(packet gopacket.Packet), err error) {
if link.String() == "" {
link = layers.LinkTypeEthernet
}
w := NewWriterNanos(file)
err = w.WriteFileHeader(64<<10, link)
if err != nil {
return nil, err
}
return func(packet gopacket.Packet) {
err = w.WritePacket(packet.Metadata().CaptureInfo, packet.Data())
if err != nil && debugger != nil {
go debugger(3, err)
}
}, nil
}
// PcapHandle returns new pcap Handle from dev on success.
// this function should be called after setting all necessary options for this listener
func (l *Listener) PcapHandle(ifi NetInterface) (handle *pcap.Handle, err error) {
var inactive *pcap.InactiveHandle
inactive, err = pcap.NewInactiveHandle(ifi.Name)
if inactive != nil && err != nil {
defer inactive.CleanUp()
}
if err != nil {
return nil, fmt.Errorf("inactive handle error: %q, interface: %q", err, ifi.Name)
}
if l.TimestampType != "" {
var ts pcap.TimestampSource
ts, err = pcap.TimestampSourceFromString(l.TimestampType)
err = inactive.SetTimestampSource(ts)
if err != nil {
return nil, fmt.Errorf("%q: supported timestamps: %q, interface: %q", err, inactive.SupportedTimestamps(), ifi.Name)
}
}
if l.Promiscuous {
if err = inactive.SetPromisc(l.Promiscuous); err != nil {
return nil, fmt.Errorf("promiscuous mode error: %q, interface: %q", err, ifi.Name)
}
}
if l.Monitor {
if err = inactive.SetRFMon(l.Monitor); err != nil && !errors.Is(err, pcap.CannotSetRFMon) {
return nil, fmt.Errorf("monitor mode error: %q, interface: %q", err, ifi.Name)
}
}
var snap int
if l.Snaplen {
snap = 64<<10 + 200
} else if ifi.MTU > 0 {
snap = ifi.MTU + 200
}
err = inactive.SetSnapLen(snap)
if err != nil {
return nil, fmt.Errorf("snapshot length error: %q, interface: %q", err, ifi.Name)
}
if l.BufferSize > 0 {
err = inactive.SetBufferSize(int(l.BufferSize))
if err != nil {
return nil, fmt.Errorf("handle buffer size error: %q, interface: %q", err, ifi.Name)
}
}
if l.BufferTimeout == 0 {
l.BufferTimeout = pcap.BlockForever
}
err = inactive.SetTimeout(l.BufferTimeout)
if err != nil {
return nil, fmt.Errorf("handle buffer timeout error: %q, interface: %q", err, ifi.Name)
}
handle, err = inactive.Activate()
if err != nil {
return nil, fmt.Errorf("PCAP Activate device error: %q, interface: %q", err, ifi.Name)
}
if l.BPFFilter != "" {
if l.BPFFilter[0] != '(' || l.BPFFilter[len(l.BPFFilter)-1] != ')' {
l.BPFFilter = "(" + l.BPFFilter + ")"
}
} else {
l.BPFFilter = l.Filter(ifi)
}
err = handle.SetBPFFilter(l.BPFFilter)
if err != nil {
handle.Close()
return nil, fmt.Errorf("BPF filter error: %q%s, interface: %q", err, l.BPFFilter, ifi.Name)
}
return
}
// SocketHandle returns new unix ethernet handle associated with this listener settings
func (l *Listener) SocketHandle(ifi NetInterface) (handle Socket, err error) {
handle, err = NewSocket(ifi.Interface)
if err != nil {
return nil, fmt.Errorf("sock raw error: %q, interface: %q", err, ifi.Name)
}
if err = handle.SetPromiscuous(l.Promiscuous || l.Monitor); err != nil {
return nil, fmt.Errorf("promiscuous mode error: %q, interface: %q", err, ifi.Name)
}
if l.BPFFilter != "" {
if l.BPFFilter[0] != '(' || l.BPFFilter[len(l.BPFFilter)-1] != ')' {
l.BPFFilter = "(" + l.BPFFilter + ")"
}
} else {
l.BPFFilter = l.Filter(ifi)
}
if err = handle.SetBPFFilter(l.BPFFilter); err != nil {
handle.Close()
return nil, fmt.Errorf("BPF filter error: %q%s, interface: %q", err, l.BPFFilter, ifi.Name)
}
handle.SetLoopbackIndex(int32(l.loopIndex))
return
}
func (l *Listener) read() {
l.Lock()
defer l.Unlock()
for key, handle := range l.Handles {
var source *gopacket.PacketSource
linkType := layers.LinkTypeEthernet
if _, ok := handle.(*pcap.Handle); ok {
linkType = handle.(*pcap.Handle).LinkType()
}
source = gopacket.NewPacketSource(handle, linkType)
source.Lazy = true
source.NoCopy = true
ch := source.Packets()
go func(key string) {
defer l.closeHandles(key)
for {
select {
case <-l.quit:
return
case p, ok := <-ch:
if !ok {
return
}
l.packets <- p
}
}
}(key)
}
l.Reading <- true
close(l.Reading)
}
func (l *Listener) closeHandles(key string) {
l.Lock()
defer l.Unlock()
if handle, ok := l.Handles[key]; ok {
if _, ok = handle.(Socket); ok {
handle.(Socket).Close()
} else {
handle.(*pcap.Handle).Close()
}
delete(l.Handles, key)
if len(l.Handles) == 0 {
close(l.packets)
}
}
}
func (l *Listener) activatePcap() error {
var e error
var msg string
for _, ifi := range l.Interfaces {
var handle *pcap.Handle
handle, e = l.PcapHandle(ifi)
if e != nil {
msg += ("\n" + e.Error())
continue
}
l.Handles[ifi.Name] = handle
}
if len(l.Handles) == 0 {
return fmt.Errorf("pcap handles error:%s", msg)
}
return nil
}
func (l *Listener) activateRawSocket() error {
if runtime.GOOS != "linux" {
return fmt.Errorf("sock_raw is not stabilized on OS other than linux")
}
var msg string
var e error
for _, ifi := range l.Interfaces {
var handle Socket
handle, e = l.SocketHandle(ifi)
if e != nil {
msg += ("\n" + e.Error())
continue
}
l.Handles[ifi.Name] = handle
}
return e
}
func (l *Listener) activatePcapFile() (err error) {
var handle *pcap.Handle
var e error
if handle, e = pcap.OpenOffline(l.host); e != nil {
return fmt.Errorf("open pcap file error: %q", e)
}
if l.BPFFilter != "" {
if l.BPFFilter[0] != '(' || l.BPFFilter[len(l.BPFFilter)-1] != ')' {
l.BPFFilter = "(" + l.BPFFilter + ")"
}
} else {
addr := l.host
l.host = ""
l.BPFFilter = l.Filter(NetInterface{})
l.host = addr
}
if e = handle.SetBPFFilter(l.BPFFilter); e != nil {
handle.Close()
return fmt.Errorf("BPF filter error: %q, filter: %s", e, l.BPFFilter)
}
l.Handles["pcap_file"] = handle
return
}
func (l *Listener) setInterfaces() (err error) {
var Ifis []NetInterface
var ifis []net.Interface
ifis, err = net.Interfaces()
if err != nil {
return err
}
for i := 0; i < len(ifis); i++ {
if ifis[i].Flags&net.FlagLoopback != 0 {
l.loopIndex = ifis[i].Index
}
if ifis[i].Flags&net.FlagUp == 0 {
continue
}
var addrs []net.Addr
addrs, err = ifis[i].Addrs()
if err != nil {
return err
}
if len(addrs) == 0 {
continue
}
ifi := NetInterface{}
ifi.Interface = ifis[i]
ifi.IPs = make([]string, len(addrs))
for j, addr := range addrs {
ifi.IPs[j] = cutMask(addr)
}
Ifis = append(Ifis, ifi)
}
if listenAll(l.host) {
l.Interfaces = Ifis
return
}
found := false
for _, ifi := range Ifis {
if isDevice(l.host, ifi) {
found = true
}
for _, ip := range ifi.IPs {
if ip == l.host {
found = true
break
}
}
if found {
l.Interfaces = []NetInterface{ifi}
return
}
}
err = fmt.Errorf("can not find interface with addr, name or index %s", l.host)
return err
}
func cutMask(addr net.Addr) string {
mask := addr.String()
for i, v := range mask {
if v == '/' {
return mask[:i]
}
}
return mask
}
func isDevice(addr string, ifi NetInterface) bool {
return addr == ifi.Name || addr == fmt.Sprintf("%d", ifi.Index) || addr == ifi.HardwareAddr.String()
}
func listenAll(addr string) bool {
switch addr {
case "", "0.0.0.0", "[::]", "::":
return true
}
return false
}
-297
View File
@@ -1,297 +0,0 @@
package capture
import (
"context"
"encoding/binary"
"io/ioutil"
"net"
"os"
"testing"
"time"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"github.com/google/gopacket/pcap"
)
var LoopBack = func() net.Interface {
ifis, _ := net.Interfaces()
for _, v := range ifis {
if v.Flags&net.FlagLoopback != 0 {
return v
}
}
return ifis[0]
}()
func TestSetInterfaces(t *testing.T) {
l := &Listener{}
l.host = "127.0.0.1"
l.setInterfaces()
if len(l.Interfaces) != 1 {
t.Error("expected a single interface")
}
l.host = LoopBack.HardwareAddr.String()
l.setInterfaces()
if l.Interfaces[0].Name != LoopBack.Name && len(l.Interfaces) != 1 {
t.Error("interface should be loop back interface")
}
l.host = ""
l.setInterfaces()
if len(l.Interfaces) < 1 {
t.Error("should get all interfaces")
}
}
func TestBPFFilter(t *testing.T) {
l := &Listener{}
l.host = "127.0.0.1"
l.Transport = "tcp"
l.setInterfaces()
filter := l.Filter(l.Interfaces[0])
if filter != "(tcp dst portrange 0-65535 and host 127.0.0.1)" {
t.Error("wrong filter", filter)
}
l.port = 8000
l.trackResponse = true
filter = l.Filter(l.Interfaces[0])
if filter != "(tcp port 8000 and host 127.0.0.1)" {
t.Error("wrong filter")
}
}
var decodeOpts = gopacket.DecodeOptions{Lazy: true, NoCopy: true}
func generateHeaders(seq uint32, length uint16) (headers [44]byte) {
// set ethernet headers
binary.BigEndian.PutUint32(headers[0:4], uint32(layers.ProtocolFamilyIPv4))
// set ip header
ip := headers[4:]
copy(ip[0:2], []byte{4<<4 | 5, 0x28<<2 | 0x00})
binary.BigEndian.PutUint16(ip[2:4], length+54)
ip[9] = uint8(layers.IPProtocolTCP)
copy(ip[12:16], []byte{127, 0, 0, 1})
copy(ip[16:], []byte{127, 0, 0, 1})
// set tcp header
tcp := ip[20:]
binary.BigEndian.PutUint16(tcp[0:2], 45678)
binary.BigEndian.PutUint16(tcp[2:4], 8000)
tcp[12] = 5 << 4
return
}
func randomPackets(start uint32, _len int, length uint16) []gopacket.Packet {
var packets = make([]gopacket.Packet, _len)
for i := start; i < start+uint32(_len); i++ {
h := generateHeaders(i, length)
d := make([]byte, int(length)+len(h))
copy(d, h[0:])
packet := gopacket.NewPacket(d, layers.LinkTypeLoop, decodeOpts)
packets[i-start] = packet
inf := packets[i-start].Metadata()
_len := len(d)
inf.CaptureInfo = gopacket.CaptureInfo{CaptureLength: _len, Length: _len, Timestamp: time.Now()}
}
return packets
}
func TestPcapDump(t *testing.T) {
f, err := ioutil.TempFile("", "pcap_file")
if err != nil {
t.Error(err)
}
waiter := make(chan bool, 1)
h, _ := PcapDumpHandler(f, layers.LinkTypeLoop, func(level int, a ...interface{}) {
if level != 3 {
t.Errorf("expected debug level to be 3, got %d", level)
}
waiter <- true
})
packets := randomPackets(1, 5, 5)
for i := 0; i < len(packets); i++ {
if i == 1 {
tcp := packets[i].Data()[4:][20:]
// change dst port
binary.BigEndian.PutUint16(tcp[2:], 8001)
}
if i == 4 {
inf := packets[i].Metadata()
inf.CaptureLength = 40
}
h(packets[i])
}
<-waiter
name := f.Name()
f.Close()
testPcapDumpEngine(name, t)
}
func testPcapDumpEngine(f string, t *testing.T) {
defer os.Remove(f)
l, err := NewListener(f, 8000, "", EnginePcapFile, true)
err = l.Activate()
if err != nil {
t.Errorf("expected error to be nil, got %q", err)
return
}
pckts := 0
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
err = l.Listen(ctx, func(packet gopacket.Packet) {
if packet.Metadata().CaptureLength != 49 {
t.Errorf("expected packet length to be %d, got %d", 49, packet.Metadata().CaptureLength)
}
pckts++
})
if err != nil {
t.Errorf("expected error to be nil, got %q", err)
}
if pckts != 3 {
t.Errorf("expected %d packets, got %d packets", 3, pckts)
}
}
func TestPcapHandler(t *testing.T) {
l, err := NewListener(LoopBack.Name, 8000, "", EnginePcap, true)
if err != nil {
t.Errorf("expected error to be nil, got %v", err)
return
}
err = l.Activate()
if err != nil {
t.Errorf("expected error to be nil, got %v", err)
return
}
defer l.Handles[LoopBack.Name].(*pcap.Handle).Close()
if err != nil {
t.Errorf("expected error to be nil, got %v", err)
return
}
for i := 0; i < 5; i++ {
_, _ = net.Dial("tcp", "127.0.0.1:8000")
}
sts, _ := l.Handles[LoopBack.Name].(*pcap.Handle).Stats()
if sts.PacketsReceived < 5 {
t.Errorf("expected >=5 packets got %d", sts.PacketsReceived)
}
}
func TestSocketHandler(t *testing.T) {
l, err := NewListener(LoopBack.Name, 8000, "", EngineRawSocket, true)
err = l.Activate()
if err != nil {
return
}
defer l.Handles[LoopBack.Name].(*SockRaw).Close()
if err != nil {
t.Errorf("expected error to be nil, got %v", err)
return
}
for i := 0; i < 5; i++ {
_, _ = net.Dial("tcp", "127.0.0.1:8000")
}
sts, _ := l.Handles[LoopBack.Name].(*SockRaw).Stats()
if sts.Packets < 5 {
t.Errorf("expected >=5 packets got %d", sts.Packets)
}
}
func BenchmarkPcapDump(b *testing.B) {
f, err := ioutil.TempFile("", "pcap_file")
if err != nil {
b.Error(err)
return
}
now := time.Now()
defer os.Remove(f.Name())
h, _ := PcapDumpHandler(f, layers.LinkTypeLoop, nil)
packets := randomPackets(1, b.N, 5)
for i := 0; i < len(packets); i++ {
h(packets[i])
}
f.Close()
b.Logf("%d packets in %s", b.N, time.Since(now))
}
func BenchmarkPcapFile(b *testing.B) {
f, err := ioutil.TempFile("", "pcap_file")
if err != nil {
b.Error(err)
return
}
defer os.Remove(f.Name())
h, _ := PcapDumpHandler(f, layers.LinkTypeLoop, nil)
packets := randomPackets(1, b.N, 5)
for i := 0; i < len(packets); i++ {
h(packets[i])
}
name := f.Name()
f.Close()
b.ResetTimer()
var l *Listener
l, err = NewListener(name, 8000, "", EnginePcapFile, true)
if err != nil {
b.Error(err)
return
}
err = l.Activate()
if err != nil {
b.Error(err)
return
}
now := time.Now()
pckts := 0
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
if err = l.Listen(ctx, func(packet gopacket.Packet) {
if packet.Metadata().CaptureLength != 49 {
b.Errorf("expected packet length to be %d, got %d", 49, packet.Metadata().CaptureLength)
}
pckts++
}); err != nil {
b.Error(err)
}
b.Logf("%d/%d packets in %s", pckts, b.N, time.Since(now))
}
func BenchmarkPcap(b *testing.B) {
now := time.Now()
var err error
l, err := NewListener(LoopBack.Name, 8000, "", EnginePcap, true)
if err != nil {
b.Errorf("expected error to be nil, got %v", err)
return
}
err = l.Activate()
if err != nil {
b.Errorf("expected error to be nil, got %v", err)
return
}
defer l.Handles[LoopBack.Name].(*pcap.Handle).Close()
for i := 0; i < b.N; i++ {
_, _ = net.Dial("tcp", "127.0.0.1:8000")
}
sts, _ := l.Handles[LoopBack.Name].(*pcap.Handle).Stats()
b.Logf("%d packets in %s", sts.PacketsReceived, time.Since(now))
}
func BenchmarkRawSocket(b *testing.B) {
now := time.Now()
var err error
l, err := NewListener(LoopBack.Name, 0, "", EngineRawSocket, true)
err = l.Activate()
if err != nil {
return
}
defer l.Handles[LoopBack.Name].(*SockRaw).Close()
for i := 0; i < b.N; i++ {
_, _ = net.Dial("tcp", "127.0.0.1:8000")
}
sts, _ := l.Handles[LoopBack.Name].(*SockRaw).Stats()
b.Logf("%d packets in %s", sts.Packets, time.Since(now))
}
-35
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@@ -1,35 +0,0 @@
/*
Package capture provides traffic sniffier using AF_PACKET, pcap or pcap file.
it allows you to listen for traffic from any port (e.g. sniffing) because they operate on IP level.
Ports is TCP/IP feature, same as flow control, reliable transmission and etc.
Currently this package implements TCP layer: flow control is managed under tcp package.
BPF filters can also be applied.
example:
// for the transport should be "tcp"
listener, err := capture.NewListener(host, port, transport, engine, trackResponse)
if err != nil {
// handle error
}
listener.SetPcapOptions(opts)
err = listner.Activate()
if err != nil {
// handle it
}
if err := listener.Listen(context.Background(), handler); err != nil {
// handle error
}
// or
errCh := listener.ListenBackground(context.Background(), handler) // runs in the backgorund
select {
case err := <- errCh:
// handle error
case <-quit:
//
case <- l.Reading: // if we have started reading
}
*/
package capture // import github.com/buger/goreplay/capture
-126
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@@ -1,126 +0,0 @@
// https://github.com/google/gopacket/blob/403ca653c4/pcapgo/read.go
package capture
import (
"encoding/binary"
"fmt"
"io"
"time"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
)
// Writer wraps an underlying io.Writer to write packet data in PCAP
// format. See http://wiki.wireshark.org/Development/LibpcapFileFormat
// for information on the file format.
//
// For those that care, we currently write v2.4 files with nanosecond
// or microsecond timestamp resolution and little-endian encoding.
type Writer struct {
w io.Writer
tsScaler int
// Moving this into the struct seems to save an allocation for each call to writePacketHeader
buf [16]byte
}
const magicNanoseconds = 0xA1B23C4D
const magicMicroseconds = 0xA1B2C3D4
const versionMajor = 2
const versionMinor = 4
// NewWriterNanos returns a new writer object, for writing packet data out
// to the given writer. If this is a new empty writer (as opposed to
// an append), you must call WriteFileHeader before WritePacket. Packet
// timestamps are written with nanosecond precision.
//
// // Write a new file:
// f, _ := os.Create("/tmp/file.pcap")
// w := pcapgo.NewWriterNanos(f)
// w.WriteFileHeader(65536, layers.LinkTypeEthernet) // new file, must do this.
// w.WritePacket(gopacket.CaptureInfo{...}, data1)
// f.Close()
// // Append to existing file (must have same snaplen and linktype)
// f2, _ := os.OpenFile("/tmp/fileNano.pcap", os.O_APPEND, 0700)
// w2 := pcapgo.NewWriter(f2)
// // no need for file header, it's already written.
// w2.WritePacket(gopacket.CaptureInfo{...}, data2)
// f2.Close()
func NewWriterNanos(w io.Writer) *Writer {
return &Writer{w: w, tsScaler: nanosPerNano}
}
// NewWriter returns a new writer object, for writing packet data out
// to the given writer. If this is a new empty writer (as opposed to
// an append), you must call WriteFileHeader before WritePacket.
// Packet timestamps are written witn microsecond precision.
//
// // Write a new file:
// f, _ := os.Create("/tmp/file.pcap")
// w := pcapgo.NewWriter(f)
// w.WriteFileHeader(65536, layers.LinkTypeEthernet) // new file, must do this.
// w.WritePacket(gopacket.CaptureInfo{...}, data1)
// f.Close()
// // Append to existing file (must have same snaplen and linktype)
// f2, _ := os.OpenFile("/tmp/file.pcap", os.O_APPEND, 0700)
// w2 := pcapgo.NewWriter(f2)
// // no need for file header, it's already written.
// w2.WritePacket(gopacket.CaptureInfo{...}, data2)
// f2.Close()
func NewWriter(w io.Writer) *Writer {
return &Writer{w: w, tsScaler: nanosPerMicro}
}
// WriteFileHeader writes a file header out to the writer.
// This must be called exactly once per output.
func (w *Writer) WriteFileHeader(snaplen uint32, linktype layers.LinkType) error {
var buf [24]byte
if w.tsScaler == nanosPerMicro {
binary.LittleEndian.PutUint32(buf[0:4], magicMicroseconds)
} else {
binary.LittleEndian.PutUint32(buf[0:4], magicNanoseconds)
}
binary.LittleEndian.PutUint16(buf[4:6], versionMajor)
binary.LittleEndian.PutUint16(buf[6:8], versionMinor)
// bytes 8:12 stay 0 (timezone = UTC)
// bytes 12:16 stay 0 (sigfigs is always set to zero, according to
// http://wiki.wireshark.org/Development/LibpcapFileFormat
binary.LittleEndian.PutUint32(buf[16:20], snaplen)
binary.LittleEndian.PutUint32(buf[20:24], uint32(linktype))
_, err := w.w.Write(buf[:])
return err
}
const nanosPerMicro = 1000
const nanosPerNano = 1
func (w *Writer) writePacketHeader(ci gopacket.CaptureInfo) error {
t := ci.Timestamp
if t.IsZero() {
t = time.Now()
}
secs := t.Unix()
usecs := t.Nanosecond() / w.tsScaler
binary.LittleEndian.PutUint32(w.buf[0:4], uint32(secs))
binary.LittleEndian.PutUint32(w.buf[4:8], uint32(usecs))
binary.LittleEndian.PutUint32(w.buf[8:12], uint32(ci.CaptureLength))
binary.LittleEndian.PutUint32(w.buf[12:16], uint32(ci.Length))
_, err := w.w.Write(w.buf[:])
return err
}
// WritePacket writes the given packet data out to the file.
func (w *Writer) WritePacket(ci gopacket.CaptureInfo, data []byte) error {
if ci.CaptureLength != len(data) {
return fmt.Errorf("capture length %d does not match data length %d", ci.CaptureLength, len(data))
}
if ci.CaptureLength > ci.Length {
return fmt.Errorf("invalid capture info %+v: capture length > length", ci)
}
if err := w.writePacketHeader(ci); err != nil {
return fmt.Errorf("error writing packet header: %v", err)
}
_, err := w.w.Write(data)
return err
}
-260
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@@ -1,260 +0,0 @@
package capture
import (
"fmt"
"net"
"sync"
"time"
"unsafe"
"golang.org/x/sys/unix"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"github.com/google/gopacket/pcap"
)
const (
// ETHALL htons(ETH_P_ALL)
ETHALL uint16 = unix.ETH_P_ALL<<8 | unix.ETH_P_ALL>>8
// BLOCKSIZE ring buffer block_size
BLOCKSIZE = 64 << 10
// BLOCKNR ring buffer block_nr
BLOCKNR = (2 << 20) / BLOCKSIZE // 2mb / 64kb
// FRAMESIZE ring buffer frame_size
FRAMESIZE = BLOCKSIZE
// FRAMENR ring buffer frame_nr
FRAMENR = BLOCKNR * BLOCKSIZE / FRAMESIZE
// MAPHUGE2MB 2mb huge map
MAPHUGE2MB = 21 << unix.MAP_HUGE_SHIFT
)
var tpacket2hdrlen = tpAlign(int(unsafe.Sizeof(unix.Tpacket2Hdr{})))
// SockRaw is a linux M'maped af_packet socket
type SockRaw struct {
mu sync.Mutex
fd int
ifindex int
snaplen int
pollTimeout uintptr
frame uint32 // current frame
buf []byte // points to the memory space of the ring buffer shared with the kernel.
loopIndex int32 // this field must filled to avoid reading packet twice on a loopback device
}
// NewSocket returns new M'maped sock_raw on packet version 2.
func NewSocket(ifi net.Interface) (*SockRaw, error) {
// sock create
fd, err := unix.Socket(unix.AF_PACKET, unix.SOCK_RAW, int(ETHALL))
if err != nil {
return nil, err
}
sock := &SockRaw{
fd: fd,
ifindex: ifi.Index,
snaplen: FRAMESIZE,
pollTimeout: ^uintptr(0),
}
// set packet version
err = unix.SetsockoptInt(fd, unix.SOL_PACKET, unix.PACKET_VERSION, unix.TPACKET_V2)
if err != nil {
unix.Close(fd)
return nil, fmt.Errorf("setsockopt packet_version: %v", err)
}
// bind to interface
addr := unix.RawSockaddrLinklayer{
Family: unix.AF_PACKET,
Protocol: ETHALL,
Ifindex: int32(ifi.Index),
}
_, _, e := unix.Syscall(
unix.SYS_BIND,
uintptr(fd),
uintptr(unsafe.Pointer(&addr)),
uintptr(unix.SizeofSockaddrLinklayer),
)
if e != 0 {
unix.Close(fd)
return nil, e
}
// create shared-memory ring buffer
tp := &unix.TpacketReq{
Block_size: BLOCKSIZE,
Block_nr: BLOCKNR,
Frame_size: FRAMESIZE,
Frame_nr: FRAMENR,
}
err = unix.SetsockoptTpacketReq(sock.fd, unix.SOL_PACKET, unix.PACKET_RX_RING, tp)
if err != nil {
unix.Close(fd)
return nil, fmt.Errorf("setsockopt packet_rx_ring: %v", err)
}
sock.buf, err = unix.Mmap(
sock.fd,
0,
BLOCKSIZE*BLOCKNR,
unix.PROT_READ|unix.PROT_WRITE,
unix.MAP_SHARED|MAPHUGE2MB,
)
if err != nil {
unix.Close(fd)
return nil, fmt.Errorf("socket mmap error: %v", err)
}
return sock, nil
}
// ReadPacketData implements gopacket.PacketDataSource.
func (sock *SockRaw) ReadPacketData() (buf []byte, ci gopacket.CaptureInfo, err error) {
sock.mu.Lock()
defer sock.mu.Unlock()
var tpHdr *unix.Tpacket2Hdr
poll := &unix.PollFd{
Fd: int32(sock.fd),
Events: unix.POLLIN,
}
var i int
read:
i = int(sock.frame * FRAMESIZE)
tpHdr = (*unix.Tpacket2Hdr)(unsafe.Pointer(&sock.buf[i]))
sock.frame = (sock.frame + 1) % FRAMENR
if tpHdr.Status&unix.TP_STATUS_USER == 0 {
_, _, e := unix.Syscall(unix.SYS_POLL, uintptr(unsafe.Pointer(poll)), 1, sock.pollTimeout)
if e != 0 && e != unix.EINTR {
return buf, ci, e
}
// it might be some other frame with data!
if tpHdr.Status&unix.TP_STATUS_USER == 0 {
goto read
}
}
tpHdr.Status = unix.TP_STATUS_KERNEL
sockAddr := (*unix.RawSockaddrLinklayer)(unsafe.Pointer(&sock.buf[i+tpacket2hdrlen]))
// parse out repeating packets on loopback
if sockAddr.Ifindex == sock.loopIndex && sock.frame%2 != 0 {
goto read
}
ci.Length = int(tpHdr.Len)
ci.Timestamp = time.Unix(int64(tpHdr.Sec), int64(tpHdr.Nsec))
ci.InterfaceIndex = int(sockAddr.Ifindex)
buf = make([]byte, tpHdr.Snaplen)
ci.CaptureLength = copy(buf, sock.buf[i+int(tpHdr.Mac):])
return
}
// Close closes the underlying socket
func (sock *SockRaw) Close() (err error) {
sock.mu.Lock()
defer sock.mu.Unlock()
if sock.fd != -1 {
unix.Munmap(sock.buf)
sock.buf = nil
err = unix.Close(sock.fd)
sock.fd = -1
}
return
}
// SetSnapLen sets the maximum capture length to the given value.
// for this to take effects on the kernel level SetBPFilter should be called too.
func (sock *SockRaw) SetSnapLen(snap int) error {
sock.mu.Lock()
defer sock.mu.Unlock()
if snap < 0 {
return fmt.Errorf("expected %d snap length to be at least 0", snap)
}
if snap > FRAMESIZE {
snap = FRAMESIZE
}
sock.snaplen = snap
return nil
}
// SetTimeout sets poll wait timeout for the socket.
// negative value will block forever
func (sock *SockRaw) SetTimeout(t time.Duration) error {
sock.mu.Lock()
defer sock.mu.Unlock()
sock.pollTimeout = uintptr(t)
return nil
}
// GetSnapLen returns the maximum capture length
func (sock *SockRaw) GetSnapLen() int {
sock.mu.Lock()
defer sock.mu.Unlock()
return sock.snaplen
}
// SetBPFFilter compiles and sets a BPF filter for the socket handle.
func (sock *SockRaw) SetBPFFilter(expr string) error {
sock.mu.Lock()
defer sock.mu.Unlock()
if len(expr) == 0 {
return unix.SetsockoptInt(sock.fd, unix.SOL_SOCKET, unix.SO_DETACH_FILTER, 0)
}
filter, err := pcap.CompileBPFFilter(layers.LinkTypeEthernet, sock.snaplen, expr)
if err != nil {
return err
}
if len(filter) > int(^uint16(0)) {
return fmt.Errorf("filters out of range 0-%d", ^uint16(0))
}
if len(filter) == 0 {
return unix.SetsockoptInt(sock.fd, unix.SOL_SOCKET, unix.SO_DETACH_FILTER, 0)
}
fprog := &unix.SockFprog{
Len: uint16(len(filter)),
Filter: &(*(*[]unix.SockFilter)(unsafe.Pointer(&filter)))[0],
}
return unix.SetsockoptSockFprog(sock.fd, unix.SOL_SOCKET, unix.SO_ATTACH_FILTER, fprog)
}
// SetPromiscuous sets promiscous mode to the required value. for better result capture on all interfaces instead.
// If it is enabled, traffic not destined for the interface will also be captured.
func (sock *SockRaw) SetPromiscuous(b bool) error {
sock.mu.Lock()
defer sock.mu.Unlock()
mreq := unix.PacketMreq{
Ifindex: int32(sock.ifindex),
Type: unix.PACKET_MR_PROMISC,
}
opt := unix.PACKET_ADD_MEMBERSHIP
if !b {
opt = unix.PACKET_DROP_MEMBERSHIP
}
return unix.SetsockoptPacketMreq(sock.fd, unix.SOL_PACKET, opt, &mreq)
}
// Stats returns number of packets and dropped packets. This will be the number of packets/dropped packets since the last call to stats (not the cummulative sum!).
func (sock *SockRaw) Stats() (*unix.TpacketStats, error) {
sock.mu.Lock()
defer sock.mu.Unlock()
return unix.GetsockoptTpacketStats(sock.fd, unix.SOL_PACKET, unix.PACKET_STATISTICS)
}
// SetLoopbackIndex necessary to avoid reading packet twice on a loopback device
func (sock *SockRaw) SetLoopbackIndex(i int32) {
sock.mu.Lock()
defer sock.mu.Unlock()
sock.loopIndex = i
}
// WritePacketData transmits a raw packet.
func (sock *SockRaw) WritePacketData(pkt []byte) error {
_, err := unix.Write(sock.fd, pkt)
return err
}
func tpAlign(x int) int {
return int((uint(x) + unix.TPACKET_ALIGNMENT - 1) &^ (unix.TPACKET_ALIGNMENT - 1))
}
-13
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@@ -1,13 +0,0 @@
// +build !linux
package capture
import (
"errors"
"net"
)
// NewSocket returns new M'maped sock_raw on packet version 2.
func NewSocket(_ net.Interface) (Socket, error) {
return nil, errors.New("afpacket socket is only available on linux")
}
-20
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@@ -1,20 +0,0 @@
package capture
import (
"time"
"github.com/google/gopacket"
)
// Socket is any interface that defines the behaviors of Socket
type Socket interface {
ReadPacketData() ([]byte, gopacket.CaptureInfo, error)
WritePacketData([]byte) error
SetBPFFilter(string) error
SetPromiscuous(bool) error
SetSnapLen(int) error
GetSnapLen() int
SetTimeout(time.Duration) error
SetLoopbackIndex(i int32)
Close() error
}
-1
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@@ -1 +0,0 @@
docs.goreplay.org
-49
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@@ -1,49 +0,0 @@
Think about Gor more like a network analyzer or tcpdump on steroids, it is not a proxy and does not affect your app anyhow. You specify application port, and it will capture and replay incoming data.
Simplest setup will be:
```bash
# Run on servers where you want to catch traffic. You can run it on every `web` machine.
sudo gor --input-raw :80 --output-http http://staging.com
```
It will record and replay traffic from the same machine. However, it is possible to use [[Aggregator-forwarder setup]], when Gor on your web machines forward traffic to Gor aggregator instance running on the separate server.
> You may notice that it require `sudo`: to analyze network Gor need permissions which available only to root users. However, it is possible to configure Gor [beign run for non-root users](Running as a non-root user).
### Forwarding to multiple addresses
You can forward traffic to multiple endpoints.
```
gor --input-tcp :28020 --output-http "http://staging.com" --output-http "http://dev.com"
```
### Splitting traffic
By default, it will send same traffic to all outputs, but you have options to equally split it (round-robin) using `--split-output` option.
```
gor --input-raw :80 --output-http "http://staging.com" --output-http "http://dev.com" --split-output true
```
### Tracking responses
By default `input-raw` does not intercept responses, only requests. You can turn response tracking using `--input-raw-track-response` option. When enable you will be able to access response information in middleware and `output-file`.
### Traffic interception engine
By default, Gor will use `libpcap` for intercepting traffic, it should work in most cases. If you have any troubles with it, you may try alternative engine: `raw_socket`.
```
sudo gor --input-raw :80 --input-raw-engine "raw_socket" --output-http "http://staging.com"
```
You can read more about [[Replaying HTTP traffic]].
### Tracking original IP addresses
You can use `--input-raw-realip-header` option to specify header name: If not blank, injects header with given name and real IP value to the request payload. Usually, this header should be named: `X-Real-IP`, but you can specify any name.
`gor --input-raw :80 --input-raw-realip-header "X-Real-IP" ...`
***
Also you may want to know about [[Rate limiting]], [[Request rewriting]] and [[Request filtering]]
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We provide pre-compiled binaries for Mac and Linux, but you are free to compile Gor by yourself.
Gor is written using Go, so first you need to download it from here https://golang.org/, use the latest stable version.
The only Gor dependency is [libpcap](https://github.com/the-tcpdump-group/libpcap), which is the interface to various kernel packet capture mechanisms, and https://github.com/google/gopacket, which is a Go wrapper around libpcap. Latest libpcap version can be obtained at http://www.tcpdump.org/release/. Libpcap itself depend on `flex` and `bison` packages, many operating systems already have them installed.
```bash
# Fetch libpcap dependencies. Depending on your OS, instead of `apt` you will use `yum` or `rpm`, or `brew` on Mac.
sudo apt-get install flex bison -y
# Download latest stable release, compile and install it
wget http://www.tcpdump.org/release/libpcap-1.7.4.tar.gz && tar xzf libpcap-1.7.4.tar.gz
cd libpcap-1.7.4
./configure && make install
# Lets fetch Gor source code
mkdir $HOME/gocode
# See more information about GOPATH https://github.com/golang/go/wiki/GOPATH
export GOPATH=$HOME/gocode
# Fetch code from the Github
go get github.com/buger/gor
# Compile from source
cd $HOME/gocode/src/github.com/buger/gor
go build LDFLAGS = -ldflags "-extldflags \"-static\""
```
After you finished, you should see `gor` binary in current directory.
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## STEP 1: Install Docker
For local development we recommend to use Docker.
If you don’t have it you can read how to install it here:
https://docs.docker.com/engine/getstarted/step_one/#step-3-verify-your-installation
## STEP 2: Download repository
`git clone git@github.com:buger/goreplay.git`
## STEP 3: Setup container
```
cd ./goreplay
make build
```
## Testing
To run tests execute next command:
```
make test
```
You can copy the command that is produced and modify it. For example, if you need to run one test copy the command and add `-run TestName`, e.g.:
```
docker run -v `pwd`:/go/src/github.com/buger/gor/ -p 0.0.0.0:8000:8000 -t -i gor:go go test ./. -run TestEmitterFiltered -timeout 60s -ldflags "-X main.VERSION=DEV-1482398347 -extldflags \"-static\"" -v
```
## Building
To get a binary file run
```
make release-bin
```
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Sometimes it makes sense to use separate Gor instance for replaying traffic and performing things like load testing, so your production machines do not spend precious resources. It is possible to configure Gor on your web machines forward traffic to Gor aggregator instance running on the separate server.
```bash
# Run on servers where you want to catch traffic. You can run it on each `web` machine.
sudo gor --input-raw :80 --output-tcp replay.local:28020
# Replay server (replay.local).
gor --input-tcp replay.local:28020 --output-http http://staging.com
```
If you have multiple replay machines you can split traffic among them using `--split-output` option: it will equally split all incoming traffic to all outputs using round robin algorithm.
```
gor --input-raw :80 --split-output --output-tcp replay1.local:28020 --output-tcp replay2.local:28020
```
[GoReplay PRO](https://goreplay.org/pro.html) support accurate recording and replaying of tcp sessions, and when `--recognize-tcp-sessions` option is passed, instead of round-robin it will use a smarter algorithm which ensures that same sessions will be sent to the same replay instance.
In case if you are planning a large load testing, you may consider use separate master instance which will control Gor slaves which actually replay traffic. For example:
```
# This command will read multiple log files, replay them on 10x speed and loop them if needed for 30 seconds, and will distributed traffic (tcp session aware) among multiple workers
gor --input-file logs_from_multiple_machines.*|1000% --input-file-loop --exit-after 30s --recognize-tcp-sessions --split-output --output-tcp worker1.local --output-tcp worker2.local:27017 --output-tcp worker3.local:27017 ... --output-tcp workerN.local:27017
# worker
gor --input-tcp :27017 --ouput-http load_test.target
```
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Gor can export requests and replayed response data to ElasticSearch:
```
./gor --input-raw :8000 --output-http http://staging.com --output-http-elasticsearch localhost:9200/gor
```
You don't have to create the index upfront. That will be done for you automatically.
### Format
Following structure represents ES format:
```
type ESRequestResponse struct {
ReqURL string `json:"Req_URL"`
ReqMethod string `json:"Req_Method"`
ReqUserAgent string `json:"Req_User-Agent"`
ReqAcceptLanguage string `json:"Req_Accept-Language,omitempty"`
ReqAccept string `json:"Req_Accept,omitempty"`
ReqAcceptEncoding string `json:"Req_Accept-Encoding,omitempty"`
ReqIfModifiedSince string `json:"Req_If-Modified-Since,omitempty"`
ReqConnection string `json:"Req_Connection,omitempty"`
ReqCookies string `json:"Req_Cookies,omitempty"`
RespStatus string `json:"Resp_Status"`
RespStatusCode string `json:"Resp_Status-Code"`
RespProto string `json:"Resp_Proto,omitempty"`
RespContentLength string `json:"Resp_Content-Length,omitempty"`
RespContentType string `json:"Resp_Content-Type,omitempty"`
RespTransferEncoding string `json:"Resp_Transfer-Encoding,omitempty"`
RespContentEncoding string `json:"Resp_Content-Encoding,omitempty"`
RespExpires string `json:"Resp_Expires,omitempty"`
RespCacheControl string `json:"Resp_Cache-Control,omitempty"`
RespVary string `json:"Resp_Vary,omitempty"`
RespSetCookie string `json:"Resp_Set-Cookie,omitempty"`
Rtt int64 `json:"RTT"`
Timestamp time.Time
}
```
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### What OS are supported?
Gor will run everywhere where [libpcap](http://www.tcpdump.org/) works, and it works on most of the platforms. However, currently, we test it on Linux and Mac. See more about [[Compilation]].
### Why does the `--input-raw` requires sudo or root access?
Listener works by sniffing traffic from a given port. It's accessible
only by using sudo or root access. But it is possible to [[Running as non root user]].
### How do you deal with user session to replay the traffic correctly?
You can rewrite session related headers/params to match your staging environment. If you require custom logic (e.g random token based auth) follow this discussion: https://github.com/buger/gor/issues/154
### Can I use Gor to intercept SSL traffic?
Basic idea is that SSL was made to protect itself from traffic interception. There 2 options:
1. Move SSL handling to proxy like Nginx or Amazon ELB. And allow Gor to listen on upstreams.
2. Use `--input-http` so you can duplicate request payload directly from your app to Gor, but it will require your app modifications.
More can be find here: https://github.com/buger/gor/issues/85
### Is there a limit for size of HTTP request when using output-http?
Due to the fact that Gor can't guarantee interception of all packets, for large payloads > 200kb there is chance of missing some packets and corrupting body. Treat it as a feature and chance to test broken bodies handling :)
The only way to guarantee delivery is using `--input-http`, but you will miss some features.
### I'm getting 'too many open files' error
Typical Linux shell has a small open files soft limit at 1024. You can easily raise that when you do this before starting your gor replay process:
ulimit -n 64000
More about ulimit: http://www.thecodingmachine.com/solving-the-too-many-open-files-exception-in-red5-or-any-other-application/
### The CPU average across my load-balanced targets is higher than the source
If you are replaying traffic from multiple listeners to a load-balanced target and you use sticky sessions, you may observe that the target servers have a higher CPU load than the listener servers. This may be because the sticky session cookie of the original load balancer is not honored by the target load balancer thus resulting in requests that would normally hit the same target server hitting different servers on the backend thus reducing some caching benefits gained via the load balancing. Try running just one listener against one replay target and see if the CPU utilization comparison is more accurate.
Also see [[Troubleshooting]].
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#### Overview
Middleware is a program that accepts request and response payload at STDIN and emits modified requests at STDOUT. You can implement any custom logic like stripping private data, advanced rewriting, support for oAuth and etc. Check examples [included into our repo](https://github.com/buger/gor/tree/master/examples/middleware).
```
Original request +--------------+
+-------------+----------STDIN---------->+ |
| Gor input | | Middleware |
+-------------+----------STDIN---------->+ |
Original response (1) +------+---+---+
| ^
+-------------+ Modified request v |
| Gor output +<---------STDOUT-----------------+ |
+-----+-------+ |
| |
| Replayed response |
+------------------STDIN----------------->----+
```
(1): Original responses will only be sent to the middleware if the `--input-raw-track-response` option is specified.
Middleware can be written in any language, see `examples/middleware` folder for examples.
Middleware program should accept the fact that all communication with Gor is asynchronous, there is no guarantee that original request and response messages will come one after each other. Your app should take care of the state if logic depends on original or replayed response, see `examples/middleware/token_modifier.go` as example.
Simple bash echo middleware (returns same request) will look like this:
```bash
while read line; do
echo $line
done
```
Middleware can be enabled using `--middleware` option, by specifying path to executable file:
```
gor --input-raw :80 --middleware "/opt/middleware_executable" --output-http "http://staging.server"
```
#### Communication protocol
All messages should be hex encoded, new line character specifieds the end of the message, eg. new message per line.
Decoded payload consist of 2 parts: header and HTTP payload, separated by new line character.
Example request payload:
```
1 932079936fa4306fc308d67588178d17d823647c 1439818823587396305
GET /a HTTP/1.1
Host: 127.0.0.1
```
Example response payload (note: you will only receive this if you specify `--input-raw-track-response`)
```
2 8e091765ae902fef8a2b7d9dd960e9d52222bd8c 1439818823587996305 2782013
HTTP/1.1 200 OK
Date: Mon, 17 Aug 2015 13:40:23 GMT
Content-Length: 0
Content-Type: text/plain; charset=utf-8
```
Header contains request meta information separated by spaces. First value is payload type, possible values: `1` - request, `2` - original response, `3` - replayed response.
Next goes request id: unique among all requests (sha1 of time and Ack), but remain same for original and replayed response, so you can create associations between request and responses. The third argument is the time when request/response was initiated/received. Forth argument is populated only for responses and means latency.
HTTP payload is unmodified HTTP requests/responses intercepted from network. You can read more about request format [here](http://www.jmarshall.com/easy/http/), [here](https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol) and [here](http://www.w3.org/Protocols/rfc2616/rfc2616.html). You can operate with payload as you want, add headers, change path, and etc. Basically you just editing a string, just ensure that it is RCF compliant.
At the end modified (or untouched) request should be emitted back to STDOUT, keeping original header, and hex-encoded. If you want to filter request, just not send it. Emitting responses back is required, even if you did not touch them.
#### Advanced example
Imagine that you have auth system that randomly generate access tokens, which used later for accessing secure content. Since there is no pre-defined token value, naive approach without middleware (or if middleware use only request payloads) will fail, because replayed server have own tokens, not synced with origin. To fix this, our middleware should take in account responses of replayed and origin server, store `originalToken -> replayedToken` aliases and rewrite all requests using this token to use replayed alias. See [examples/middleware/token_modifier.go](https://github.com/buger/gor/tree/master/examples/middleware/token_modifier.go) and [middleware_test.go#TestTokenMiddleware](https://github.com/buger/gor/tree/master/middleware_test.go) as example of described scheme.
***
You may also read about [[Request filtering]], [[Rate limiting]] and [[Request rewriting]].
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Rate limiting can be useful if you only want to forward parts of incoming traffic, for example, to not overload your test environment. There are two strategies: dropping random requests or dropping fractions of requests based on Header or URL param value.
### Dropping random requests
Every input and output support random rate limiting.
There are two limiting algorithms: absolute or percentage based.
**Absolute**: If for current second it reached specified requests limit - disregard the rest, on next second counter reset.
**Percentage**: For input-file it will slowdown or speedup request execution, for the rest it will use the random generator to decide if request pass or not based on the chance you specified.
You can specify your desired limit using the "|" operator after the server address, see examples below.
#### Limiting replay using absolute number
```
# staging.server will not get more than ten requests per second
gor --input-tcp :28020 --output-http "http://staging.com|10"
```
#### Limiting listener using percentage based limiter
```
# replay server will not get more than 10% of requests
# useful for high-load environments
gor --input-raw :80 --output-tcp "replay.local:28020|10%"
```
### Consistent limiting based on Header or URL param value
If you have unique user id (like API key) stored in header or URL you can consistently forward specified percent of traffic only for the fraction of this users.
Basic formula looks like this: `FNV32-1A_hashing(value) % 100 >= chance`. Examples:
```
# Limit based on header value
gor --input-raw :80 --output-tcp "replay.local:28020|10%" --http-header-limiter "X-API-KEY: 10%"
# Limit based on header value
gor --input-raw :80 --output-tcp "replay.local:28020|10%" --http-param-limiter "api_key: 10%"
```
When limiting based on header or param only percentage based limiting supported.
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Gor can replay HTTP traffic using `--output-http` option:
```bash
sudo ./gor --input-raw :8000 --output-http="http://staging.env"
```
You can [filter](Request filtering), [rate limit](Rate limiting) and [rewrite](Request rewriting) requests on the fly.
### HTTP output workers
By default Gor creates a dynamic pool of workers: it starts with 10 and creates more HTTP output workers when the HTTP output queue length is greater than 10. The number of workers created (N) is equal to the queue length at the time which it is checked and found to have a length greater than 10. The queue length is checked every time a message is written to the HTTP output queue. No more workers will be spawned until that request to spawn N workers is satisfied. If a dynamic worker cannot process a message at that time, it will sleep for 100 milliseconds. If a dynamic worker cannot process a message for 2 seconds it dies.
You may specify fixed number of workers using `--output-http-workers=20` option.
### Following redirects
By default Gor will ignore all redirects since they are handled by clients using your app, but in scenarios where your replayed environment introduces new redirects, you can enable them like this:
```
gor --input-tcp replay.local:28020 --output-http http://staging.com --output-http-redirects 2
```
The given example will follow up to 2 redirects per request.
### HTTP timeouts
By default http timeout for both request and response is 5 seconds. You can override it like this:
```
gor --input-tcp replay.local:28020 --output-http http://staging.com --output-http-timeout 30s
```
### Response buffer
By default, to reduce memory consumption, internal HTTP client will fetch max 200kb of the response body (used if you use middleware), by you can increase limit using `--output-http-response-buffer` option (accepts number of bytes).
### Basic Auth
If your development or staging environment is protected by Basic Authentication then those credentials can be injected in during the replay:
```
gor --input-raw :80 --output-http "http://user:pass@staging.com"
```
Note: This will overwrite any Authorization headers in the original request.
### Multiple domains support
If you app accepts traffic from multiple domains, and you want to keep original headers, there is specific `--http-original-host` with tells Gor do not touch Host header at all.
***
You may also read about [[Saving and Replaying from file]]
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Filtering is useful when you need to capture only specific part of traffic, like API requests. It is possible to filter by URL, HTTP header or HTTP method.
#### Allow url regexp
```
# only forward requests being sent to the /api endpoint
gor --input-raw :8080 --output-http staging.com --http-allow-url /api
```
#### Disallow url regexp
```
# only forward requests NOT being sent to the /api... endpoint
gor --input-raw :8080 --output-http staging.com --http-disallow-url /api
```
#### Filter based on regexp of header
```
# only forward requests with an api version of 1.0x
gor --input-raw :8080 --output-http staging.com --http-allow-header api-version:^1\.0\d
# only forward requests NOT containing User-Agent header value "Replayed by Gor"
gor --input-raw :8080 --output-http staging.com --http-disallow-header "User-Agent: Replayed by Gor"
```
#### Filter based on HTTP method
Requests not matching a specified whitelist can be filtered out. For example to strip non-nullipotent requests:
```
gor --input-raw :80 --output-http "http://staging.server" \
--http-allow-method GET \
--http-allow-method OPTIONS
```
-----
You may also read about [[Request rewriting]], [[Rate limiting]] and [[Middleware]]
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Gor supports rewriting of URLs, URL params and headers, see below.
Rewriting may be useful if you test environment does not have the same data as your production, and you want to perform all actions in the context of `test` user: for example rewrite all API tokens to some test value. Other possible use cases are toggling features on/off using custom headers or rewriting URL's if they changed in the new environment.
For more complex logic you can use [Middleware](middleware.md).
#### Rewrite URL based on a mapping
`--http-rewrite-url` expects value in "<search>:<replace>" format: ":" is a dilimiter. In `<replace>` section you may use captured regexp group values. This works similar to `replace` method in Javascript or `gsub` in Ruby.
```
# Rewrites all `/v1/user/<user_id>/ping` requests to `/v2/user/<user_id>/ping`
gor --input-raw :8080 --output-http staging.com --http-rewrite-url /v1/user/([^\\/]+)/ping:/v2/user/$1/ping
```
#### Set URL param
Set request url param, if param already exists it will be overwritten.
```
gor --input-raw :8080 --output-http staging.com --http-set-param api_key=1
```
#### Set Header
Set request header, if header already exists it will be overwritten. May be useful if you need to identify requests generated by Gor or enable feature flagged functionality in an application:
```
gor --input-raw :80 --output-http "http://staging.server" \
--http-set-header "User-Agent: Replayed by Gor" \
--http-set-header "Enable-Feature-X: true"
```
#### Host header
Host header gets special treatment. By default Host get set to the value specified in --output-http. If you manually set --http-set-header "Host: anonther.com", Gor will not override Host value.
If you app accepts traffic from multiple domains, and you want to keep original headers, there is specific `--http-original-host` with tells Gor do not touch Host header at all.
***
You may also read about [[Request filtering]], [[Rate limiting]] and [[Middleware]]
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You can enable Gor for non-root users in a secure method by using the following commands
```
# Following commands assume that you put `gor` binary to /usr/local/bin
add gor
addgroup <username> gor
chgrp gor /usr/local/bin/gor
chmod 0750 /usr/local/bin/gor
setcap "cap_net_raw,cap_net_admin+eip" /usr/local/bin/gor
```
As a brief explanation of the above.
* We create a group called gor.
* We then add the user you want to the new group so they will be able to use gor without sudo
* We then change the user/group of gor binary the new group.
* We then make sure the permissions are set on gor binary so that members of the group can execute it but other normal users cannot.
* We then use `setcap` to give the CAP_NET_RAW and CAP_NET_ADMIN privilege to the executable when it runs. This is so that Gor can open its raw socket which is not normally permitted unless you are root.
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You can save requests to file, and replay them later. While replaying it will preserve the original time differences between requests. If you apply [percentage based limiting](Rate Limiting) timing between requests will be reduced or increased appropriately: this approach opens possibilities like load testing, see below.
```bash
# write to file
gor --input-raw :80 --output-file requests.log
# read from file
gor --input-file requests.gor --output-http "http://staging.com"
```
By default Gor writes files in chunks. This configurable using `--output-file-append` option: the flushed chunk is appended to existence file or not. The default is **false**. By default, `--output-file` flushes each chunk to a different path.
```bash
gor ... --output-file %Y%m%d.log
# append false
20140608_0.log
20140608_1.log
20140609_0.log
20140609_1.log
```
This makes parallel file processing easy. But if you want to disable this behavior, you can disable it by adding `--output-file-append` option:
```bash
gor ... --output-file %Y%m%d.log --output-file-append
# append true
20140608.log
20140609.log
```
If you run gor multiple times, and it finds existing files, it will continue from last known index.
### Chunk size
You can set chunk limits using `--output-file-size-limit` and `--output-file-queue-limit` options.
The length of the chunk queue and the size of each chunk, respectively. The default values are 256 and 32mb, respectively. The suffixes “k” (KB), “m” (MB), and “g” (GB) can be used for `output-file-size-limit`.
If you want to have only size constraint, you can set `--output-file-queue-limit` to 0, and vice versa.
```bash
gor --input-raw :80 --output-file %Y-%m-%d.gz --output-file-size-limit 256m --output-file-queue-limit 0
```
### Using date variables in file names
For example, you can tell to create new file each hour: `--output-file /mnt/logs/requests-%Y-%m-%d-%H.log`
It will create new file for each hour: requests-2016-06-01-12.log, requests-2016-06-01-13.log, ...
The time format used as part of the file name. The following characters are replaced with actual values when the file is created:
* `%Y`: year including the century (at least 4 digits)
* `%m`: month of the year (01..12)
* `%d`: Day of the month (01..31)
* `%H`: Hour of the day, 24-hour clock (00..23)
* `%M`: Minute of the hour (00..59)
* `%S`: Second of the minute (00..60)
The default format is `%Y%m%d%H`, which creates one file per hour.
### GZIP compression
To read or write GZIP compressed files ensure that file extension ends with ".gz": `--output-file log.gz`
### Replaying from multiple files
`--input-file` accepts file pattern, for example: `--input-file logs-2016-05-*`: it will replay all the files, sorting them in lexicographical order.
### Buffered file output
Gor has memory buffer when it writes to file, and continuously flush changes to the file. Flushing to file happens if the buffer is filled, forced flush every 1 second, or if Gor is closed. You can change it using `--output-file-flush-interval` option. It most cases it should not be touched.
### File format
HTTP requests stored as it is, plain text: headers and bodies. Requests separated by `\n🐵🙈🙉\n` line (using such sequence for uniqueness and fun). Before each request goes single line with meta information containing payload type (1 - request, 2 - response, 3 - replayed response), unique request ID (request and response have the same) and timestamp when request was made. An example of 2 requests:
```
1 d7123dasd913jfd21312dasdhas31 127345969\n
GET / HTTP/1.1\r\n
\r\n
\n
🐵🙈🙉
\n
POST /upload HTTP/1.1\r\n
Content-Length: 7\r\n
Host: www.w3.org\r\n
\r\n
a=1&b=2
```
Note that technically \r and \n symbols are invisible, and indicate new lines. I made them visible in example just to show how it looks on byte level.
Making it text friendly allows writing simple parsers and use console tools like `grep` to do an analysis. You can even edit them manually, but be sure that your file editor does not change line endings.
## Performance testing
Currently, this functionality supported only by `input-file` and only when using percentage based limiter. Unlike default limiter for `input-file` instead of dropping requests it will slowdown or speedup request emitting. Note that **limiter is applied to input**:
```
# Replay from file on 2x speed
gor --input-file "requests.gor|200%" --output-http "staging.com"
```
Use `--stats --output-http-stats` to see latency stats.
### Looping files for replaying indefinitely
You can loop the same set of files, so when the last one replays all the requests, it will not stop, and will start from first one again. Having the only small amount of requests you can do extensive performance testing.
Pass `--input-file-loop` to make it work.
***
You may also read about [[Capturing and replaying traffic]] and [[Rate limiting]]
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Gor can report stats on the `output-tcp` and `output-http` request queues. Stats are reported to the console every 5 seconds in the form `latest,mean,max,count,count/second` by using the `--output-http-stats` and `--output-tcp-stats` options.
Examples:
```
2014/04/23 21:17:50 output_tcp:latest,mean,max,count,count/second
2014/04/23 21:17:50 output_tcp:0,0,0,0,0
2014/04/23 21:17:55 output_tcp:1,1,2,68,13
2014/04/23 21:18:00 output_tcp:1,1,2,92,18
2014/04/23 21:18:05 output_tcp:1,1,2,119,23
```
```
2014/04/23 21:19:46 output_http:latest,mean,max,count,count/second
2014/04/23 21:19:46 output_http:0,0,0,0,0
2014/04/23 21:19:51 output_http:0,0,0,0,0
2014/04/23 21:19:56 output_http:0,0,0,0,0
2014/04/23 21:20:01 output_http:1,0,1,50,10
2014/04/23 21:20:06 output_http:1,1,4,72,14
2014/04/23 21:20:11 output_http:1,0,1,179,35
2014/04/23 21:20:16 output_http:1,0,1,148,29
2014/04/23 21:20:21 output_http:1,1,2,91,18
2014/04/23 21:20:26 output_http:1,1,2,150,30
2014/04/23 21:18:15 output_http:100,99,100,70,14
2014/04/23 21:18:21 output_http:100,99,100,55,11
```
### How can I tell if I have bottlenecks?
Key areas that sometimes experience bottlenecks are the output-tcp and output-http functions which have internal queues for requests. Each queue has an upper limit of 100. Enable stats reporting to see if any queues are experiencing bottleneck behavior.
#### Output HTTP bottlenecks
When running a Gor replay the output-http feature may bottleneck if:
* the replay has inadequate bandwidth. If the replay is receiving or sending more messages than its network adapter can handle the output-http-stats may report that the output-http queue is filling up. See if there is a way to upgrade the replay's bandwidth.
* with `--output-http-workers` set to anything other than `-1` the `-output-http` target is unable to respond to messages in a timely manner. The http output workers which take messages off the output-http queue, process the request, and ensure that the request did not result in an error may not be able to keep up with the number of incoming requests. If the replay is not using dynamic worker scaling (`--output-http-workers=-1`) The optimal number of output-http-workers can be determined with the formula `output-workers = (Average number of requests per second)/(Average target response time per second)`.
#### Output TCP bottlenecks
When using the Gor listener the output-tcp feature may bottleneck if:
* the replay is unable to accept and process more requests than the listener is able generate. Prior to troubleshooting the output-tcp bottleneck, ensure that the replay target is not experiencing any bottlenecks.
* the replay target has inadequate bandwidth to handle all its incoming requests. If a replay target's incoming bandwidth is maxed out the output-tcp-stats may report that the output-tcp queue is filling up. See if there is a way to upgrade the replay's bandwidth.
#### Tuning
To achieve the top most performance you should tune the source server system limits:
net.ipv4.tcp_max_tw_buckets = 65536
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 0
net.ipv4.tcp_max_syn_backlog = 131072
net.ipv4.tcp_syn_retries = 3
net.ipv4.tcp_synack_retries = 3
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_retries2 = 8
net.ipv4.tcp_rmem = 16384 174760 349520
net.ipv4.tcp_wmem = 16384 131072 262144
net.ipv4.tcp_mem = 262144 524288 1048576
net.ipv4.tcp_max_orphans = 65536
net.ipv4.tcp_fin_timeout = 10
net.ipv4.tcp_low_latency = 1
net.ipv4.tcp_syncookies = 0
***
### Gor is crashing with following stacktrace
```
fatal error: unexpected signal during runtime execution
[signal 0xb code=0x1 addr=0x63 pc=0x7ffcdfdf8b2c]
runtime stack:
runtime.throw(0xad8380, 0x2a)
/usr/local/go/src/runtime/panic.go:547 +0x90
runtime.sigpanic()
/usr/local/go/src/runtime/sigpanic_unix.go:12 +0x5a
goroutine 103 [syscall, locked to thread]:
runtime.cgocall(0x7b35a0, 0xc82121f1e8, 0x0)
/usr/local/go/src/runtime/cgocall.go:123 +0x11b fp=0xc82121f188 sp=0xc82121f158
net._C2func_getaddrinfo(0x7ffcec0008c0, 0x0, 0xc821b221e0, 0xc8217b2b18, 0x0, 0x0, 0x0)
??:0 +0x55 fp=0xc82121f1e8 sp=0xc82121f188
net.cgoLookupIPCNAME(0x7fffb17208ab, 0x12, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb17200)
```
There is a chance that you hit Go bug. The crash comes from the CGO version of DNS resolver.
By default Go based version used, but ins some cases [it switches to CGO based](https://golang.org/pkg/net/#hdr-Name_Resolution). It is possible to force Go based DNS resolver using GODEBUG environment variable:
`sudo GODEBUG="netdns=go" ./gor --input-raw :80 --output-http staging.env`
Also, see [[FAQ]]
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[Website](https://goreplay.org) | [PRO version](https://goreplay.org/pro.html) | [[Getting started]] | [[FAQ]] | [Join newsletter](https://www.getdrip.com/forms/89690474/submissions/new)
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theme: jekyll-theme-cayman
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Collaboration is difficult with commercial closed source but I do want to keep as much of the OSS ethos as possible available to customers who want to fix it themselves.
## Legal
In order to unambiguously own and sell Gor commercial products, I must have the copyright associated with the entire codebase. Any code you create which is merged must be owned by me. That's not me trying to be a jerk, that's just the way it works.
## Application
If you wish access to the product repository so you can send a PR, just open a new Gor issue and include the following info:
1. the email address that bought the license, a max of one collaborator per license
1. the following statement "I assign all rights, including copyright, to any future Gor work by myself to Leonid Bugaev"
You should be granted access to the private repo soon after.
## Notes
1. You should **never** work on the master branch. Only I may merge changes.
1. I may revoke access for any reason at any time. Access is not guaranteed with purchase.
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### What are GoReplay PRO and GoReplay Enterprise?
[GoReplay PRO](https://goreplay.org/pro.html) and GoReplay Enterprise are extensions to GoReplay which add more functionality and provide additional support options for customers.
### Is there a trial version?
There's no free trial but we do offer a 14 day period with full refund if it does not work for you.
### What is the license?
See [COMM-LICENSE](https://github.com/buger/gor/blob/master/COMM-LICENSE) in the root of the GoReplay repo.
### How does PRO licensing work?
Every organization running GoReplay Pro on its own servers must have a license. There's no limit to the amount of servers or environments used by that organization.
### How does Enterprise licensing work?
Every organization running Gor Enterprise on its own servers must have a license. There's **no limit** to the amount of servers or environments used by that organization.
### What happens if my subscription lapses?
You must have an active subscription to run GoReplay Pro or Enterprise. After a one week grace period, you'll lose access to binaries and priority support. You won't get any more updates or bug fixes.
### How do I buy GoReplay Enterprise?
Send email to [support&#64;gortool.com](mailto:support&#64;gortool.com) with your info. A PDF quote will be emailed to you with the price. Reply to that email with your purchase order or just "Sounds good" and we will send an invoice which can be paid with a credit card, ACH bank transfer or a paper check.
### Can I upgrade from GoReplay Pro?
Yes! Current subscribers can upgrade by [requesting a quote](mailto:support&#64;gortool.com). **Please note that you are an existing Pro subscriber.** We will add a one-time discount on your first invoice to reflect any remaining Pro subscription credit. If you purchased GoReplay Pro 6 months ago for $950, you'll get a $475 discount.
### Can I distribute GoReplay PRO or Enterprise to my customers?
This is a common requirement for "on-site installs" or "appliances" sold to large corporations.
The standard license is appropriate for SaaS usage as it does not allow distribution. GoReplay PRO and Enterprise have an Appliance license option which **does** allow you to distribute them. The Appliance license is $9,500/yr for Pro and $19,500/yr for Enterprise. It allows you to distribute the Pro or Enterprise binaries as part of your application and each of your customers to run GoReplay Pro or Enterprise. Email [support&#64;gortool.com](mailto:support&#64;gortool.com) to purchase.
### Can you transfer a license?
Licenses are **not** transferable to another company. We will transfer the license from a user-specific email to a group email address (e.g. john_smith@example.com -> tech@example.com) but only for **the same domain**. It is strongly recommended that you buy the license using a group email address so the license is not attached to any one employee's email address.
### What does the license require me to do?
Your purchase gets you a unique access URL for downloading the Pro and/or Enterprise binaries. The license agreement requires you to keep this access URL private. If we find your access URL is ever publicized:
1. We'll send you a warning email with details. You need to remove the content and send a new email address so we can generate a new access URL for you. The old access URL will stop working immediately so you'll need to update your apps.
2. If your access URL is publicized a second time, we reserve the right to permanently remove access.
### Can I get a refund?
Yes, up to two weeks after purchase. Let us know the reason and maybe we can help but either way it's not a problem. Email [support&#64;gortool.com](mailto:support&#64;gortool.com).
### How do I update my credit card info?
If you purchased GoReplay Enterprise, there's nothing to do. Each annual invoice is paid separately.
If you purchased GoReplay PRO, log into [Gumroad](https://gumroad.com) with your email address, click the Billing tab and enter your new card. I can't provide support for the Gumroad website and don't have the ability to edit customer info - if you can't log in or change your credit card, you can always let your current subscription expire and purchase a new subscription.
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Gor offers only community support. Gor Pro and Enterprise offer priority support via email.
## Priority Support
Covers 1 incident per quarter, with a max response time of 2 working days. Scope is limited to Gor and Gor Pro and Enterprise features and APIs, not the application or infrastructure. For support, email **support** AT **gortool.com**. Please email using the same domain as the original license email or explain your connection to the licensed company.
More aggressive support contracts (phone, quicker response time) are available separately, email with your needs.
## Onboarding
Enterprise customers may request a one hour video chat session with @buger to discuss their application(s), requirements and how best to leverage the various Gor features. Contact support to set up your session.
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width: 100%;
color: #333;
border-radius: 3px;
outline: 0;
padding: 10px;
background-color: #fff;
border: solid 1px #6d6d6d;
box-shadow: none
}
.wy-side-nav-search img {
display: block;
margin: auto auto .809em;
height: 45px;
width: 45px;
background-color: #2980B9;
padding: 5px;
border-radius: 100%
}
.wy-side-nav-search>a,
.wy-side-nav-search .wy-dropdown>a {
color: #333;
font-size: 100%;
font-weight: 700;
display: inline-block;
padding: 4px 6px;
margin-bottom: .809em
}
.wy-side-nav-search>a:hover,
.wy-side-nav-search .wy-dropdown>a:hover {
background: rgba(255,255,255,0.1)
}
.wy-side-nav-search>a img.logo,
.wy-side-nav-search .wy-dropdown>a img.logo {
display: block;
margin: 0 auto;
height: auto;
width: auto;
border-radius: 0;
max-width: 100%;
background: transparent
}
.wy-side-nav-search>a.icon img.logo,
.wy-side-nav-search .wy-dropdown>a.icon img.logo {
margin-top: .85em
}
.wy-nav .wy-menu-vertical header {
color: #2980B9
}
.wy-nav .wy-menu-vertical a {
color: #b3b3b3
}
.wy-nav .wy-menu-vertical a:hover {
background-color: #2980B9;
color: #fff
}
[data-menu-wrap] {
-webkit-transition: all .2s ease-in;
-moz-transition: all .2s ease-in;
transition: all .2s ease-in;
position: absolute;
opacity: 1;
width: 100%;
opacity: 0
}
[data-menu-wrap].move-center {
left: 0;
right: auto;
opacity: 1
}
[data-menu-wrap].move-left {
right: auto;
left: -100%;
opacity: 0
}
[data-menu-wrap].move-right {
right: -100%;
left: auto;
opacity: 0
}
.wy-body-for-nav {
background: left repeat-y #fcfcfc;
background-image: url(data:image/png;
base64,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);
background-size: 300px 1px
}
.wy-grid-for-nav {
position: absolute;
width: 100%;
height: 100%
}
.wy-nav-side {
position: fixed;
top: 0;
bottom: 0;
left: 0;
padding-bottom: 2em;
width: 300px;
overflow-x: hidden;
overflow-y: scroll;
min-height: 100%;
background-color: #fafafa;
z-index: 200;
border-right: 2px solid #eee;
}
.wy-nav-top {
display: none;
background-color: #333;
color: #fff;
padding: .4045em .809em;
position: relative;
line-height: 50px;
text-align: center;
font-size: 100%;
*zoom: 1
}
.wy-nav-top:before,
.wy-nav-top:after {
display: table;
content: ""
}
.wy-nav-top:after {
clear: both
}
.wy-nav-top a {
color: #fff;
font-weight: 700
}
.wy-nav-top img {
margin-right: 12px;
height: 45px;
width: 45px;
background-color: #2980B9;
padding: 5px;
border-radius: 100%
}
.wy-nav-top i {
font-size: 30px;
line-height: 50px;
float: left;
cursor: pointer
}
.wy-nav-content-wrap {
margin-left: 300px;
background: #fcfcfc;
min-height: 100%
}
.wy-nav-content {
padding: 1.618em 3.236em;
height: 100%;
max-width: 1100px;
margin: auto
}
.wy-body-mask {
position: fixed;
width: 100%;
height: 100%;
background: rgba(0,0,0,0.2);
display: none;
z-index: 499
}
.wy-body-mask.on {
display: block
}
@media screen and (max-width: 768px) {
.wy-body-for-nav {
background: #fcfcfc
}
.wy-nav-top {
display: block
}
.wy-nav-side {
left: -300px
}
.wy-nav-side.shift {
width: 85%;
left: 0
}
.wy-nav-content-wrap {
margin-left: 0
}
.wy-nav-content-wrap .wy-nav-content {
padding: 1.618em
}
.wy-nav-content-wrap.shift {
position: fixed;
min-width: 100%;
left: 85%;
top: 0;
height: 100%;
overflow: hidden
}
}
@media screen and (min-width: 1400px) {
.wy-nav-content {
margin: 0;
background: #fcfcfc
}
}
-17
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@@ -1,17 +0,0 @@
### Overview
Gor architecture tries to follow UNIX philosophy: everything made of pipes, various inputs multiplexing data to outputs.
You can [rate limit](/rate-limiting.md), [filter](request-filtering.md), [rewrite](request-rewriting.md) requests or even use your own [middleware](middleware.md) to implement custom logic. Also, it is possible to replay requests at the higher rate for [load testing](saving-and-replaying-from-file.md).
### Available inputs
* `--input-raw` - used to capture HTTP traffic, you should specify IP address or interface and application port. More about [[Capturing and replaying traffic]].
* `--input-file` - accepts file which previously was recorded using ` --output-file`. More about [[Saving and Replaying from file]]
* `--input-tcp` - used by Gor aggregation instance if you decided forward traffic from multiple forwarder Gor instances to it. Read about using [[Aggregator-forwarder setup]].
### Available outputs
* `--output-http` - replay HTTP traffic to given endpoint, accepts base url. Read [more about it](Replaying HTTP traffic)
* `--output-file` - records incoming traffic to the file. More about [[Saving and Replaying from file]]
* `--output-tcp` - forward incoming data to another Gor instance, used in conjunction with `--input-tcp`. Read more about [[Aggregator-forwarder setup]].
* `--output-stdout` - used for debugging, outputs all data to stdout.
-44
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@@ -1,44 +0,0 @@
### Dependencies
To start working with Gor, you need to have a web server running on your machine, and a terminal to run commands. If you are just poking around, you can quickly start the server by calling `gor file-server :8000`, this will start a simple file server of the current directory on port `8000`.
### Installing Gor
Download the latest Gor binary from https://github.com/buger/gor/releases (we provide precompiled binaries for Windows, Linux x64 and Mac OS), or you can compile by yourself [[Compilation]].
Once the archive is downloaded and uncompressed, you can run Gor from the current directory, or you may want to copy binary to your PATH (for Linux and Mac OS it can be `/usr/local/bin`).
### Capturing web traffic
Now run this command in terminal: `sudo ./gor --input-raw :8000 --output-stdout`
This command says to listen for all network activity happening on port 8000 and log it to stdout.
If you are familiar with `tcpdump`, we are going to implement similar functionality.
> You may notice that it uses `sudo` and asks for the password: to analyze network, Gor needs permissions which are available only to super users.
> However, it is possible to configure Gor [being run for non-root users](Running-as-non-root-user).
Make a few requests by opening `http://localhost:8000` in your browser, or just by calling curl in terminal `curl http://localhost:8000`. You should see that `gor` outputs all the HTTP requests and responses right to the terminal window where it is running.
**Gor is not a proxy:** you do not need to put 3-rd party tool to your critical path. Instead Gor just silently analyzes the traffic of your application and does not affect it anyhow.
### Replaying
Now it's time to replay your original traffic to another environment. Let's start the same file web server but on a different port: `gor file-server :8001`.
Instead of `--output-stdout` we will use `--output-http` and provide URL of second server: `sudo ./gor --input-raw :8000 --output-http="http://localhost:8001"`
Make few requests to first server. You should see them replicated to the second one, voila!
### Saving requests to file and replaying them later
Sometimes it's not possible to replay requests in real time; Gor allows you to save requests to the file and replay them later.
First use `--output-file` to save them: `sudo ./gor --input-raw :8000 --output-file=requests.gor`. This will create new file and continuously write all captured requests to it.
Let's re-run Gor, but now to replay requests from file: `./gor --input-file requests.gor --output-http="http://localhost:8001"`. You should see all the recorded requests coming to the second server, and they will be replayed in the same order and with exactly same timing as they were recorded.
Next: [[The Basics]]
### Watch an overview:
![YOUTUBE](https://www.youtube.com/watch?v=CxuKZcMKaW4)
-29
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@@ -1,29 +0,0 @@
Gor is an open-source tool for capturing and replaying live HTTP traffic into a test environment in order to continuously test your system with real data. It can be used to increase confidence in code deployments, configuration changes and infrastructure changes.
Read for more info:
* [[Getting Started]]
* [[The Basics]]
* [[Capturing and replaying traffic]]
* [[Replaying HTTP traffic]]
* [[[PRO] Replaying Binary protocols]]
* [[[PRO] Recording and replaying keep alive TCP sessions]]
* [[Saving and Replaying from file]]
* [Performance testing](https://github.com/buger/gor/wiki/Saving-and-Replaying-from-file#performance-testing)
* [[Rate limiting]]
* [[Request filtering]]
* [[Request rewriting]]
* [[Middleware]]
* [[Distributed configuration]]
* [[Exporting to ElasticSearch]]
* [[FAQ]]
* [[Troubleshooting]]
## Commercial Aspects
* [[Commercial Support]]
* [[Commercial FAQ]]
* [[Commercial collaboration]]
Next: [Getting Started](Getting-Started)
-7
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@@ -1,7 +0,0 @@
$(document).ready(function () {
$('img[alt="YOUTUBE"]').each(function () {
var id = $(this).attr('src').split('/')[$(this).attr('src').split('/').length - 1].split("=")[1];
var video = '<iframe style="width: 100%;height: 450px;" src="https://www.youtube.com/embed/' + id + '" frameborder="0" allowfullscreen></iframe>';
$(this).replaceWith(video);
});
});
File diff suppressed because one or more lines are too long
@@ -1,11 +0,0 @@
> **This feature available only in PRO version. See https://goreplay.org/pro.html for details.**
By default, GoReplay does not guarantee that when you record keep-alive TCP session, it will be replayed in the same TCP connection as well. This is ok for most of the cases, but it does not give an accurate number of TCP sessions while replaying, also may cause issues if your application state depends on TCP session (do not mess with HTTP session).
[GoReplay PRO](https://goreplay.org/pro.html) extension adds support for accurate recording and replaying of keep-alive TCP sessions. Separate connection to your server is created per original session and it makes benchmarks and tests incredibly accurate. To enable session recognition you just need to pass `--recognize-tcp-sessions` option.
```
gor --input-raw :80 --recognize-tcp-sessions --output-http http://test.target
```
Note that enabling this option also change algorithm of distributing traffic when using `--split-output`, see [Distributed configuration].
-14
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@@ -1,14 +0,0 @@
> **This feature available only in PRO version. See https://goreplay.org/pro.html for details.**
Gor includes basic support for working with binary formats like `thrift` or `protocol-buffers`. To start set `--input-raw-protocol` to 'binary' (by default 'http'). For replaying, you should use `--output-binary`, example:
```
gor --input-raw :80 --input-raw-protocol binary --output-binary staging:8081
```
While working with `--input-raw` you may notice a 2-second delay before messages are emitted to the outputs. This behaviour is expected and happening because for general binary protocol it is impossible to know when TCP message ends, so Gor has to set inactivity timeout. Each protocol has own rules (for example write message length as first bytes), and require individual handling to know message length. We consider improving detailed protocol support for `thrift`, `protocol-buffer` and etc.
Note that you can use all load testing features for binary protocols. For example, the following command will loop and replay recorded payload on 10x speed for 30 seconds:
```
gor --input-file './binary*.gor|1000%' --output-binary staging:9091 --input-file-loop --exit-after 30s
```
+68 -82
View File
@@ -2,81 +2,67 @@ package main
import (
"encoding/json"
"github.com/buger/elastigo/api"
"github.com/buger/elastigo/core"
"github.com/buger/gor/proto"
"log"
"net/url"
"strings"
"regexp"
"time"
"github.com/buger/goreplay/proto"
elastigo "github.com/mattbaird/elastigo/lib"
)
type ESUriErorr struct{}
func (e *ESUriErorr) Error() string {
return "Wrong ElasticSearch URL format. Expected to be: scheme://host/index_name"
return "Wrong ElasticSearch URL format. Expected to be: host:port/index_name"
}
type ESPlugin struct {
Active bool
ApiPort string
eConn *elastigo.Conn
Host string
Index string
indexor *elastigo.BulkIndexer
indexor *core.BulkIndexer
done chan bool
}
type ESRequestResponse struct {
ReqURL string `json:"Req_URL"`
ReqMethod string `json:"Req_Method"`
ReqUserAgent string `json:"Req_User-Agent"`
ReqAcceptLanguage string `json:"Req_Accept-Language,omitempty"`
ReqAccept string `json:"Req_Accept,omitempty"`
ReqAcceptEncoding string `json:"Req_Accept-Encoding,omitempty"`
ReqIfModifiedSince string `json:"Req_If-Modified-Since,omitempty"`
ReqConnection string `json:"Req_Connection,omitempty"`
ReqCookies string `json:"Req_Cookies,omitempty"`
RespStatus string `json:"Resp_Status"`
RespStatusCode string `json:"Resp_Status-Code"`
RespProto string `json:"Resp_Proto,omitempty"`
RespContentLength string `json:"Resp_Content-Length,omitempty"`
RespContentType string `json:"Resp_Content-Type,omitempty"`
RespTransferEncoding string `json:"Resp_Transfer-Encoding,omitempty"`
RespContentEncoding string `json:"Resp_Content-Encoding,omitempty"`
RespExpires string `json:"Resp_Expires,omitempty"`
RespCacheControl string `json:"Resp_Cache-Control,omitempty"`
RespVary string `json:"Resp_Vary,omitempty"`
RespSetCookie string `json:"Resp_Set-Cookie,omitempty"`
ReqUrl []byte `json:"Req_URL"`
ReqMethod []byte `json:"Req_Method"`
ReqUserAgent []byte `json:"Req_User-Agent"`
ReqAcceptLanguage []byte `json:"Req_Accept-Language,omitempty"`
ReqAccept []byte `json:"Req_Accept,omitempty"`
ReqAcceptEncoding []byte `json:"Req_Accept-Encoding,omitempty"`
ReqIfModifiedSince []byte `json:"Req_If-Modified-Since,omitempty"`
ReqConnection []byte `json:"Req_Connection,omitempty"`
ReqCookies []byte `json:"Req_Cookies,omitempty"`
RespStatus []byte `json:"Resp_Status"`
RespStatusCode []byte `json:"Resp_Status-Code"`
RespProto []byte `json:"Resp_Proto,omitempty"`
RespContentLength []byte `json:"Resp_Content-Length,omitempty"`
RespContentType []byte `json:"Resp_Content-Type,omitempty"`
RespTransferEncoding []byte `json:"Resp_Transfer-Encoding,omitempty"`
RespContentEncoding []byte `json:"Resp_Content-Encoding,omitempty"`
RespExpires []byte `json:"Resp_Expires,omitempty"`
RespCacheControl []byte `json:"Resp_Cache-Control,omitempty"`
RespVary []byte `json:"Resp_Vary,omitempty"`
RespSetCookie []byte `json:"Resp_Set-Cookie,omitempty"`
Rtt int64 `json:"RTT"`
Timestamp time.Time
}
// Parse ElasticSearch URI
//
// Proper format is: scheme://[userinfo@]host/index_name
// userinfo is: user[:password]
// net/url.Parse() does not fail if scheme is not provided but actualy does not
// handle URI properly.
// So we must 'validate' URI format to match requirements to use net/url.Parse()
func parseURI(URI string) (err error, index string) {
// Proper format is: host:port/index_name
func parseURI(URI string) (err error, host string, port string, index string) {
rURI := regexp.MustCompile("(.+):([0-9]+)/(.+)")
match := rURI.FindAllStringSubmatch(URI, -1)
parsedUrl, parseErr := url.Parse(URI)
if parseErr != nil {
err = new(ESUriErorr)
return
}
// check URL validity by extracting host and index values.
host := parsedUrl.Host
urlPathParts := strings.Split(parsedUrl.Path, "/")
index = urlPathParts[len(urlPathParts)-1]
// force index specification in uri : ie no implicit index
if host == "" || index == "" {
if len(match) == 0 {
err = new(ESUriErorr)
} else {
host = match[0][1]
port = match[0][2]
index = match[0][3]
}
return
@@ -85,35 +71,36 @@ func parseURI(URI string) (err error, index string) {
func (p *ESPlugin) Init(URI string) {
var err error
err, p.Index = parseURI(URI)
err, p.Host, p.ApiPort, p.Index = parseURI(URI)
if err != nil {
log.Fatal("Can't initialize ElasticSearch plugin.", err)
}
p.eConn = elastigo.NewConn()
api.Domain = p.Host
api.Port = p.ApiPort
p.eConn.SetFromUrl(URI)
p.indexor = p.eConn.NewBulkIndexerErrors(50, 60)
p.indexor = core.NewBulkIndexerErrors(50, 60)
p.done = make(chan bool)
p.indexor.Start()
p.indexor.Run(p.done)
go p.ErrorHandler()
// Only start the ErrorHandler goroutine when in verbose mode
// no need to burn ressources otherwise
// go p.ErrorHandler()
Debug(1, "Initialized Elasticsearch Plugin")
log.Println("Initialized Elasticsearch Plugin")
return
}
func (p *ESPlugin) IndexerShutdown() {
p.indexor.Stop()
p.done <- true
return
}
func (p *ESPlugin) ErrorHandler() {
for {
errBuf := <-p.indexor.ErrorChannel
Debug(1, "[ELASTICSEARCH]", errBuf.Err)
log.Println(errBuf.Err)
}
}
@@ -131,37 +118,36 @@ func (p *ESPlugin) ResponseAnalyze(req, resp []byte, start, stop time.Time) {
}
t := time.Now()
rtt := p.RttDurationToMs(stop.Sub(start))
req = payloadBody(req)
esResp := ESRequestResponse{
ReqURL: string(proto.Path(req)),
ReqMethod: string(proto.Method(req)),
ReqUserAgent: string(proto.Header(req, []byte("User-Agent"))),
ReqAcceptLanguage: string(proto.Header(req, []byte("Accept-Language"))),
ReqAccept: string(proto.Header(req, []byte("Accept"))),
ReqAcceptEncoding: string(proto.Header(req, []byte("Accept-Encoding"))),
ReqIfModifiedSince: string(proto.Header(req, []byte("If-Modified-Since"))),
ReqConnection: string(proto.Header(req, []byte("Connection"))),
ReqCookies: string(proto.Header(req, []byte("Cookie"))),
RespStatus: string(proto.Status(resp)),
RespStatusCode: string(proto.Status(resp)),
RespProto: string(proto.Method(resp)),
RespContentLength: string(proto.Header(resp, []byte("Content-Length"))),
RespContentType: string(proto.Header(resp, []byte("Content-Type"))),
RespTransferEncoding: string(proto.Header(resp, []byte("Transfer-Encoding"))),
RespContentEncoding: string(proto.Header(resp, []byte("Content-Encoding"))),
RespExpires: string(proto.Header(resp, []byte("Expires"))),
RespCacheControl: string(proto.Header(resp, []byte("Cache-Control"))),
RespVary: string(proto.Header(resp, []byte("Vary"))),
RespSetCookie: string(proto.Header(resp, []byte("Set-Cookie"))),
ReqUrl: proto.Path(req),
ReqMethod: proto.Method(req),
ReqUserAgent: proto.Header(req, []byte("User-Agent")),
ReqAcceptLanguage: proto.Header(req, []byte("Accept-Language")),
ReqAccept: proto.Header(req, []byte("Accept")),
ReqAcceptEncoding: proto.Header(req, []byte("Accept-Encoding")),
ReqIfModifiedSince: proto.Header(req, []byte("If-Modified-Since")),
ReqConnection: proto.Header(req, []byte("Connection")),
ReqCookies: proto.Header(req, []byte("Cookie")),
RespStatus: proto.Status(resp),
RespStatusCode: proto.Status(resp),
RespProto: proto.Method(resp),
RespContentLength: proto.Header(resp, []byte("Content-Length")),
RespContentType: proto.Header(resp, []byte("Content-Type")),
RespTransferEncoding: proto.Header(resp, []byte("Transfer-Encoding")),
RespContentEncoding: proto.Header(resp, []byte("Content-Encoding")),
RespExpires: proto.Header(resp, []byte("Expires")),
RespCacheControl: proto.Header(resp, []byte("Cache-Control")),
RespVary: proto.Header(resp, []byte("Vary")),
RespSetCookie: proto.Header(resp, []byte("Set-Cookie")),
Rtt: rtt,
Timestamp: t,
}
j, err := json.Marshal(&esResp)
if err != nil {
Debug(0, "[ELASTIC-RESPONSE]", err)
log.Println(err)
} else {
p.indexor.Index(p.Index, "RequestResponse", "", "", "", &t, j)
p.indexor.Index(p.Index, "RequestResponse", "", "", &t, j, true)
}
return
}
-140
View File
@@ -1,140 +0,0 @@
package main
import (
"testing"
)
const expectedIndex = "gor"
func assertExpectedGorIndex(index string, t *testing.T) {
if expectedIndex != index {
t.Fatalf("Expected index %s but got %s", expectedIndex, index)
}
}
func assertExpectedIndex(expectedIndex string, index string, t *testing.T) {
if expectedIndex != index {
t.Fatalf("Expected index %s but got %s", expectedIndex, index)
}
}
func assertExpectedError(returnedError error, t *testing.T) {
expectedError := new(ESUriErorr)
if expectedError != returnedError {
t.Errorf("Expected err %s but got %s", expectedError, returnedError)
}
}
func assertNoError(returnedError error, t *testing.T) {
if nil != returnedError {
t.Errorf("Expected no err but got %s", returnedError)
}
}
// Argument host:port/index_name
// i.e : localhost:9200/gor
// Fail because scheme is mandatory
func TestElasticConnectionBuildFailWithoutScheme(t *testing.T) {
uri := "localhost:9200/" + expectedIndex
err, _ := parseURI(uri)
assertExpectedError(err, t)
}
// Argument scheme://Host:port
// i.e : http://localhost:9200
// Fail : explicit index is required
func TestElasticConnectionBuildFailWithoutIndex(t *testing.T) {
uri := "http://localhost:9200"
err, index := parseURI(uri)
assertExpectedIndex("", index, t)
assertExpectedError(err, t)
}
// Argument scheme://Host/index_name
// i.e : http://localhost/gor
func TestElasticConnectionBuildFailWithoutPort(t *testing.T) {
uri := "http://localhost/" + expectedIndex
err, index := parseURI(uri)
assertNoError(err, t)
assertExpectedGorIndex(index, t)
}
// Argument scheme://Host:port/index_name
// i.e : http://localhost:9200/gor
func TestElasticLocalConnectionBuild(t *testing.T) {
uri := "http://localhost:9200/" + expectedIndex
err, index := parseURI(uri)
assertNoError(err, t)
assertExpectedGorIndex(index, t)
}
// Argument scheme://Host:port/index_name
// i.e : http://localhost.local:9200/gor or https://localhost.local:9200/gor
func TestElasticSimpleLocalWithSchemeConnectionBuild(t *testing.T) {
uri := "http://localhost.local:9200/" + expectedIndex
err, index := parseURI(uri)
assertNoError(err, t)
assertExpectedGorIndex(index, t)
}
// Argument scheme://Host:port/index_name
// i.e : http://localhost.local:9200/gor or https://localhost.local:9200/gor
func TestElasticSimpleLocalWithHTTPSConnectionBuild(t *testing.T) {
uri := "https://localhost.local:9200/" + expectedIndex
err, index := parseURI(uri)
assertNoError(err, t)
assertExpectedGorIndex(index, t)
}
// Argument scheme://Host:port/index_name
// i.e : localhost.local:9200/pathtoElastic/gor
func TestElasticLongPathConnectionBuild(t *testing.T) {
uri := "http://localhost.local:9200/pathtoElastic/" + expectedIndex
err, index := parseURI(uri)
assertNoError(err, t)
assertExpectedGorIndex(index, t)
}
// Argument scheme://Host:userinfo@port/index_name
// i.e : http://user:password@localhost.local:9200/gor
func TestElasticBasicAuthConnectionBuild(t *testing.T) {
uri := "http://user:password@localhost.local:9200/" + expectedIndex
err, index := parseURI(uri)
assertNoError(err, t)
assertExpectedGorIndex(index, t)
}
// Argument scheme://Host:port/path/index_name
// i.e : http://localhost.local:9200/path/gor or https://localhost.local:9200/path/gor
func TestElasticComplexPathConnectionBuild(t *testing.T) {
uri := "http://localhost.local:9200/path/" + expectedIndex
err, index := parseURI(uri)
assertNoError(err, t)
assertExpectedGorIndex(index, t)
}
+59 -187
View File
@@ -2,234 +2,106 @@ package main
import (
"bytes"
"hash/fnv"
"io"
"log"
"sync"
"time"
)
type emitter struct {
sync.Mutex
sync.WaitGroup
quit chan int
plugins *InOutPlugins
}
// NewEmitter creates and initializes new `emitter` object.
func NewEmitter(quit chan int) *emitter {
return &emitter{
quit: quit,
}
}
// Start initialize loop for sending data from inputs to outputs
func (e *emitter) Start(plugins *InOutPlugins, middlewareCmd string) {
defer e.Wait()
if Settings.CopyBufferSize < 1 {
Settings.CopyBufferSize = 5 << 20
}
e.plugins = plugins
func Start(stop chan int) {
if Settings.middleware != "" {
middleware := NewMiddleware(Settings.middleware)
if middlewareCmd != "" {
middleware := NewMiddleware(middlewareCmd)
for _, in := range plugins.Inputs {
for _, in := range Plugins.Inputs {
middleware.ReadFrom(in)
}
// We are going only to read responses, so using same ReadFrom method
for _, out := range plugins.Outputs {
// We going only to read responses, so using same ReadFrom method
for _, out := range Plugins.Outputs {
if r, ok := out.(io.Reader); ok {
middleware.ReadFrom(r)
}
}
e.Add(1)
go func() {
defer e.Done()
if err := CopyMulty(e.quit, middleware, plugins.Outputs...); err != nil {
Debug(2, "Error during copy: ", err)
e.Close()
}
}()
go func() {
for {
select {
case <-e.quit:
middleware.Close()
return
}
}
}()
go CopyMulty(middleware, Plugins.Outputs...)
} else {
for _, in := range plugins.Inputs {
e.Add(1)
go func(in io.Reader) {
defer e.Done()
if err := CopyMulty(e.quit, in, plugins.Outputs...); err != nil {
Debug(2, "Error during copy: ", err)
e.Close()
}
}(in)
for _, in := range Plugins.Inputs {
go CopyMulty(in, Plugins.Outputs...)
}
}
for _, out := range plugins.Outputs {
if r, ok := out.(io.Reader); ok {
e.Add(1)
go func(r io.Reader) {
defer e.Done()
if err := CopyMulty(e.quit, r, plugins.Outputs...); err != nil {
Debug(2, "Error during copy: ", err)
e.Close()
}
}(r)
}
for {
select {
case <-stop:
return
case <-time.After(time.Second):
}
}
}
func (e *emitter) close() {
select {
case <-e.quit:
default:
close(e.quit)
}
}
// Close closes all the goroutine and waits for it to finish.
func (e *emitter) Close() {
e.close()
for _, p := range e.plugins.Inputs {
if cp, ok := p.(io.Closer); ok {
cp.Close()
}
}
for _, p := range e.plugins.Outputs {
if cp, ok := p.(io.Closer); ok {
cp.Close()
}
}
e.plugins = nil // avoid further accidental usage
}
// CopyMulty copies from 1 reader to multiple writers
func CopyMulty(stop chan int, src io.Reader, writers ...io.Writer) error {
buf := make([]byte, Settings.CopyBufferSize)
func CopyMulty(src io.Reader, writers ...io.Writer) (err error) {
buf := make([]byte, 5*1024*1024)
wIndex := 0
modifier := NewHTTPModifier(&Settings.ModifierConfig)
filteredRequests := make(map[string]time.Time)
filteredRequestsLastCleanTime := time.Now()
modifier := NewHTTPModifier(&Settings.modifierConfig)
i := 0
for {
var nr int
nr, err := src.Read(buf)
nr, er := src.Read(buf)
select {
case <-stop:
return nil
default:
}
if err != nil {
return err
}
_maxN := nr
if nr > 500 {
_maxN = 500
}
if nr > 0 {
if nr > 0 && len(buf) > nr {
payload := buf[:nr]
meta := payloadMeta(payload)
if len(meta) < 3 {
Debug(2, "[EMITTER] Found malformed record", string(payload[0:_maxN]), nr, "from:", src)
continue
}
requestID := string(meta[1])
Debug(3, "[EMITTER] input:", string(payload[0:_maxN]), nr, "from:", src)
if modifier != nil {
if isRequestPayload(payload) {
headSize := bytes.IndexByte(payload, '\n') + 1
body := payload[headSize:]
originalBodyLen := len(body)
body = modifier.Rewrite(body)
// If modifier tells to skip request
if len(body) == 0 {
filteredRequests[requestID] = time.Now()
continue
}
if originalBodyLen != len(body) {
payload = append(payload[:headSize], body...)
}
Debug(3, "[EMITTER] Rewritten input:", len(payload), "First %d bytes:", _maxN, string(payload[0:_maxN]))
} else {
if _, ok := filteredRequests[requestID]; ok {
delete(filteredRequests, requestID)
continue
}
}
_maxN := nr
if nr > 500 {
_maxN = 500
}
if Settings.PrettifyHTTP {
payload = prettifyHTTP(payload)
if len(payload) == 0 {
if Settings.debug {
Debug("[EMITTER] input:", string(payload[0:_maxN]), nr, "from:", src)
}
if modifier != nil && isRequestPayload(payload) {
headSize := bytes.IndexByte(payload, '\n') + 1
body := payload[headSize:]
originalBodyLen := len(body)
body = modifier.Rewrite(body)
// If modifier tells to skip request
if len(body) == 0 {
continue
}
if originalBodyLen != len(body) {
payload = append(payload[:headSize], body...)
}
if Settings.debug {
Debug("[EMITTER] Rewrittern input:", len(payload), "First 500 bytes:", string(payload[0:_maxN]))
}
}
if Settings.SplitOutput {
if Settings.RecognizeTCPSessions {
if !PRO {
log.Fatal("Detailed TCP sessions work only with PRO license")
}
hasher := fnv.New32a()
// First 20 bytes contain tcp session
id := payloadID(payload)
hasher.Write(id)
if Settings.splitOutput {
// Simple round robin
writers[wIndex].Write(payload)
wIndex = int(hasher.Sum32()) % len(writers)
writers[wIndex].Write(payload)
} else {
// Simple round robin
if _, err := writers[wIndex].Write(payload); err != nil {
return err
}
wIndex++
wIndex++
if wIndex >= len(writers) {
wIndex = 0
}
if wIndex >= len(writers) {
wIndex = 0
}
} else {
for _, dst := range writers {
if _, err := dst.Write(payload); err != nil {
return err
}
dst.Write(payload)
}
}
}
// Run GC on each 1000 request
if i%1000 == 0 {
// Clean up filtered requests for which we didn't get a response to filter
now := time.Now()
if now.Sub(filteredRequestsLastCleanTime) > 60*time.Second {
for k, v := range filteredRequests {
if now.Sub(v) > 60*time.Second {
delete(filteredRequests, k)
}
}
filteredRequestsLastCleanTime = time.Now()
}
}
i++
if er == io.EOF {
break
}
if er != nil {
err = er
break
}
}
return err
}
+15 -187
View File
@@ -1,21 +1,12 @@
package main
import (
"fmt"
"io"
"os"
"sync"
"sync/atomic"
"testing"
"time"
)
func TestMain(m *testing.M) {
PRO = true
code := m.Run()
os.Exit(code)
}
func TestEmitter(t *testing.T) {
wg := new(sync.WaitGroup)
quit := make(chan int)
@@ -25,102 +16,10 @@ func TestEmitter(t *testing.T) {
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
for i := 0; i < 1000; i++ {
wg.Add(1)
input.EmitGET()
}
wg.Wait()
emitter.Close()
}
func TestEmitterFiltered(t *testing.T) {
wg := new(sync.WaitGroup)
quit := make(chan int)
input := NewTestInput()
input.skipHeader = true
output := NewTestOutput(func(data []byte) {
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
methods := HTTPMethods{[]byte("GET")}
Settings.ModifierConfig = HTTPModifierConfig{Methods: methods}
emitter := &emitter{quit: quit}
go emitter.Start(plugins, "")
wg.Add(2)
id := uuid()
reqh := payloadHeader(RequestPayload, id, time.Now().UnixNano(), -1)
reqb := append(reqh, []byte("GET / HTTP/1.1\r\nHost: www.w3.org\r\nUser-Agent: Go 1.1 package http\r\nAccept-Encoding: gzip\r\n\r\n")...)
resh := payloadHeader(ResponsePayload, id, time.Now().UnixNano()+1, 1)
respb := append(resh, []byte("HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")...)
input.EmitBytes(reqb)
input.EmitBytes(respb)
id = uuid()
reqh = payloadHeader(RequestPayload, id, time.Now().UnixNano(), -1)
reqb = append(reqh, []byte("POST / HTTP/1.1\r\nHost: www.w3.org\r\nUser-Agent: Go 1.1 package http\r\nAccept-Encoding: gzip\r\n\r\n")...)
resh = payloadHeader(ResponsePayload, id, time.Now().UnixNano()+1, 1)
respb = append(resh, []byte("HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")...)
input.EmitBytes(reqb)
input.EmitBytes(respb)
wg.Wait()
emitter.Close()
Settings.ModifierConfig = HTTPModifierConfig{}
}
func TestEmitterSplitRoundRobin(t *testing.T) {
wg := new(sync.WaitGroup)
quit := make(chan int)
input := NewTestInput()
var counter1, counter2 int32
output1 := NewTestOutput(func(data []byte) {
atomic.AddInt32(&counter1, 1)
wg.Done()
})
output2 := NewTestOutput(func(data []byte) {
atomic.AddInt32(&counter2, 1)
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output1, output2},
}
Settings.SplitOutput = true
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
for i := 0; i < 1000; i++ {
wg.Add(1)
@@ -129,13 +28,7 @@ func TestEmitterSplitRoundRobin(t *testing.T) {
wg.Wait()
emitter.Close()
if counter1 == 0 || counter2 == 0 || counter1 != counter2 {
t.Errorf("Round robin should split traffic equally: %d vs %d", counter1, counter2)
}
Settings.SplitOutput = false
close(quit)
}
func TestEmitterRoundRobin(t *testing.T) {
@@ -156,16 +49,12 @@ func TestEmitterRoundRobin(t *testing.T) {
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output1, output2},
}
plugins.All = append(plugins.All, input, output1, output2)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output1, output2}
Settings.SplitOutput = true
Settings.splitOutput = true
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
for i := 0; i < 1000; i++ {
wg.Add(1)
@@ -173,71 +62,14 @@ func TestEmitterRoundRobin(t *testing.T) {
}
wg.Wait()
emitter.Close()
close(quit)
if counter1 == 0 || counter2 == 0 {
t.Errorf("Round robin should split traffic equally: %d vs %d", counter1, counter2)
}
Settings.SplitOutput = false
}
func TestEmitterSplitSession(t *testing.T) {
wg := new(sync.WaitGroup)
wg.Add(200)
quit := make(chan int)
input := NewTestInput()
input.skipHeader = true
var counter1, counter2 int32
output1 := NewTestOutput(func(data []byte) {
if payloadID(data)[0] == 'a' {
atomic.AddInt32(&counter1, 1)
}
wg.Done()
})
output2 := NewTestOutput(func(data []byte) {
if payloadID(data)[0] == 'b' {
atomic.AddInt32(&counter2, 1)
}
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output1, output2},
}
Settings.SplitOutput = true
Settings.RecognizeTCPSessions = true
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
for i := 0; i < 200; i++ {
// Keep session but randomize
id := make([]byte, 20)
if i&1 == 0 { // for recognizeTCPSessions one should be odd and other will be even number
id[0] = 'a'
} else {
id[0] = 'b'
}
input.EmitBytes([]byte(fmt.Sprintf("1 %s 1 1\nGET / HTTP/1.1\r\n\r\n", id[:20])))
}
wg.Wait()
if counter1 != counter2 {
t.Errorf("Round robin should split traffic equally: %d vs %d", counter1, counter2)
}
Settings.SplitOutput = false
Settings.RecognizeTCPSessions = false
emitter.Close()
Settings.splitOutput = false
}
func BenchmarkEmitter(b *testing.B) {
@@ -250,14 +82,10 @@ func BenchmarkEmitter(b *testing.B) {
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
b.ResetTimer()
@@ -267,5 +95,5 @@ func BenchmarkEmitter(b *testing.B) {
}
wg.Wait()
emitter.Close()
close(quit)
}
-53
View File
@@ -1,53 +0,0 @@
(ns echo.core
(:gen-class)
(:require [clojure.string :as cs]
[clojure.java.io :as io])
(:import org.apache.commons.codec.binary.Hex
java.io.BufferedReader
java.io.IOException
java.io.InputStreamReader))
(defn transform-http-msg
"Function that transforms/filters the incoming HTTP messages."
[headers body]
;; do actual transformations here
[headers body])
(defn decode-hex-string
"Decode an Hex-encoded string."
[s]
(String. (Hex/decodeHex (.toCharArray s))))
(defn encode-hex-string
"Encode a string to a hex-encoded string."
[^String s]
(String. (Hex/encodeHex (.getBytes s))))
(defn -main
[& args]
(let [br (BufferedReader. (InputStreamReader. System/in))]
(try
(loop [hex-line (.readLine br)]
(let [decoded-req (decode-hex-string hex-line)
;; empty line separates headers from body
http-request (partition-by empty? (cs/split-lines decoded-req))
headers (first http-request)
;; HTTP messages can contain no body:
body (when (= 3 (count http-request)) (last http-request))
[new-headers new-body] (transform-http-msg headers body)]
(println (encode-hex-string (str (cs/join "\n" headers)
(when body
(str "\n\n"
(cs/join "\n" body)))))))
(when-let [line (.readLine br)]
(recur line)))
(catch IOException e nil))))
+5 -26
View File
@@ -2,25 +2,8 @@ import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.binary.Hex;
class Echo {
public static String decodeHexString(String s) throws DecoderException {
return new String(Hex.decodeHex(s.toCharArray()));
}
public static String encodeHexString(String s) {
return new String(Hex.encodeHex(s.getBytes()));
}
public static String transformHTTPMessage(String req) {
// do actual transformations here
return req;
}
public static void main(String[] args) throws DecoderException {
public class echo {
public static void main(String[] args) {
if(args != null){
for(String arg : args){
System.out.println(arg);
@@ -29,20 +12,16 @@ class Echo {
}
BufferedReader stdin = new BufferedReader(new InputStreamReader(
System.in));
System.in));
String line = null;
try {
while ((line = stdin.readLine()) != null) {
String decodedLine = decodeHexString(line);
String transformedLine = transformHTTPMessage(decodedLine);
String encodedLine = encodeHexString(transformedLine);
System.out.println(encodedLine);
System.out.println(line);
}
} catch (IOException e) {
}
}
}
}
-57
View File
@@ -1,57 +0,0 @@
#!/usr/bin/env node
const readline = require("readline");
const StringDecoder = require("string_decoder").StringDecoder
const rl = readline.createInterface({
input: process.stdin
});
var ignoreIds = new Set();
var ignoreAddresses = "/api";
const decoder = new StringDecoder("utf8");
function convertHexString(hex) {
var bytes = [];
for (var i = 0; i < hex.length - 1; i += 2) {
bytes.push(parseInt(hex.substr(i, 2), 16));
}
return decoder.write(Buffer.from(bytes));
}
function log(output) {
console.error("===================");
console.error(output);
}
function shouldOutputLine(request) {
const components = request.split("\n");
const header = components[0].split(" ");
const type = parseInt(header[0]);
const tag = header[1];
if (type === 3) {
return true;
}
if (type === 1) {
// Check if it's oauth
const endpoint = components[1].split(" ")[1];
if (!endpoint.startsWith(ignoreAddresses)) {
ignoreIds.add(tag);
return false;
}
} else if (type === 2) {
if (ignoreIds.has(tag)) {
ignoreIds.delete(tag);
return false;
}
}
return true;
}
rl.on("line", (input) => {
const str = convertHexString(input);
console.log(input);
if (shouldOutputLine(str)) {
log(str);
}
});
-76
View File
@@ -1,76 +0,0 @@
#! /usr/bin/env python3
# -*- coding: utf-8 -*-
import sys
import fileinput
import binascii
# Used to find end of the Headers section
EMPTY_LINE = b'\r\n\r\n'
def log(msg):
"""
Logging to STDERR as STDOUT and STDIN used for data transfer
@type msg: str or byte string
@param msg: Message to log to STDERR
"""
try:
msg = str(msg) + '\n'
except:
pass
sys.stderr.write(msg)
sys.stderr.flush()
def find_end_of_headers(byte_data):
"""
Finds where the header portion ends and the content portion begins.
@type byte_data: str or byte string
@param byte_data: Hex decoded req or resp string
"""
return byte_data.index(EMPTY_LINE) + 4
def process_stdin():
"""
Process STDIN and output to STDOUT
"""
for raw_line in fileinput.input():
line = raw_line.rstrip()
# Decode base64 encoded line
decoded = bytes.fromhex(line)
# Split into metadata and payload, the payload is headers + body
(raw_metadata, payload) = decoded.split(b'\n', 1)
# Split into headers and payload
headers_pos = find_end_of_headers(payload)
raw_headers = payload[:headers_pos]
raw_content = payload[headers_pos:]
log('===================================')
request_type_id = int(raw_metadata.split(b' ')[0])
log('Request type: {}'.format({
1: 'Request',
2: 'Original Response',
3: 'Replayed Response'
}[request_type_id]))
log('===================================')
log('Original data:')
log(line)
log('Decoded request:')
log(decoded)
encoded = binascii.hexlify(raw_metadata + b'\n' + raw_headers + raw_content).decode('ascii')
log('Encoded data:')
log(encoded)
sys.stdout.write(encoded + '\n')
if __name__ == '__main__':
process_stdin()
+10 -17
View File
@@ -1,22 +1,15 @@
#!/usr/bin/env ruby
# encoding: utf-8
while data = STDIN.gets # continuously read line from STDIN
while data = STDIN.gets
next unless data
data = data.chomp # remove end of line symbol
decoded = [data].pack("H*") # decode base64 encoded request
# decoded value is raw HTTP payload, example:
#
# POST /post HTTP/1.1
# Content-Length: 7
# Host: www.w3.org
#
# a=1&b=2"
encoded = decoded.unpack("H*").first # encoding back to base64
# Emit request back
# You can skip this if want to filter out request
data = data.chomp
decoded = [data].pack("H*")
encoded = decoded.unpack("H*").first
STDOUT.puts encoded
STDERR.puts "[DEBUG][MIDDLEWARE] Original data: #{data}"
STDERR.puts "[DEBUG][MIDDLEWARE] Decoded request: #{decoded}"
STDERR.puts "[DEBUG][MIDDLEWARE] Encoded data: #{encoded}"
end
-6
View File
@@ -2,16 +2,10 @@
#
# `xxd` utility included into vim-common package
# It allow hex decoding/encoding
#
# This example may broke if you request contains `null` string, you may consider using pipes instead.
# See: https://github.com/buger/gor/issues/309
#
function log {
if $GOR_TEST != ""; then # if we are not testing
# Logging to stderr, because stdout/stdin used for data transfer
>&2 echo "[DEBUG][ECHO] $1"
fi
}
while read line; do
+3 -6
View File
@@ -24,9 +24,8 @@ import (
"bytes"
"encoding/hex"
"fmt"
"github.com/buger/gor/proto"
"os"
"github.com/buger/goreplay/proto"
)
// requestID -> originalToken
@@ -115,8 +114,6 @@ func encode(buf []byte) []byte {
}
func Debug(args ...interface{}) {
if os.Getenv("GOR_TEST") != "" { // if we are not testing
fmt.Fprint(os.Stderr, "[DEBUG][TOKEN-MOD] ")
fmt.Fprintln(os.Stderr, args...)
}
fmt.Fprint(os.Stderr, "[DEBUG][TOKEN-MOD] ")
fmt.Fprintln(os.Stderr, args...)
}
-19
View File
@@ -1,19 +0,0 @@
module github.com/buger/goreplay
go 1.14
require (
github.com/Shopify/sarama v1.26.4
github.com/araddon/gou v0.0.0-20190110011759-c797efecbb61 // indirect
github.com/aws/aws-sdk-go v1.33.2
github.com/bitly/go-hostpool v0.1.0 // indirect
github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 // indirect
github.com/google/gopacket v1.1.18
github.com/klauspost/compress v1.10.10 // indirect
github.com/mattbaird/elastigo v0.0.0-20170123220020-2fe47fd29e4b
github.com/pierrec/lz4 v2.5.2+incompatible // indirect
github.com/rcrowley/go-metrics v0.0.0-20200313005456-10cdbea86bc0 // indirect
github.com/smartystreets/goconvey v1.6.4 // indirect
golang.org/x/net v0.0.0-20200707034311-ab3426394381 // indirect
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd
)
-117
View File
@@ -1,117 +0,0 @@
github.com/Shopify/sarama v1.26.4 h1:+17TxUq/PJEAfZAll0T7XJjSgQWCpaQSoki/x5yN8o8=
github.com/Shopify/sarama v1.26.4/go.mod h1:NbSGBSSndYaIhRcBtY9V0U7AyH+x71bG668AuWys/yU=
github.com/Shopify/toxiproxy v2.1.4+incompatible h1:TKdv8HiTLgE5wdJuEML90aBgNWsokNbMijUGhmcoBJc=
github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
github.com/araddon/gou v0.0.0-20190110011759-c797efecbb61 h1:Xz25cuW4REGC5W5UtpMU3QItMIImag615HiQcRbxqKQ=
github.com/araddon/gou v0.0.0-20190110011759-c797efecbb61/go.mod h1:ikc1XA58M+Rx7SEbf0bLJCfBkwayZ8T5jBo5FXK8Uz8=
github.com/aws/aws-sdk-go v1.33.2 h1:8TVrnPnSD7I+AmDp66xBUvS3K0J+jH09YXdrkJ34ey0=
github.com/aws/aws-sdk-go v1.33.2/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
github.com/bitly/go-hostpool v0.1.0 h1:XKmsF6k5el6xHG3WPJ8U0Ku/ye7njX7W81Ng7O2ioR0=
github.com/bitly/go-hostpool v0.1.0/go.mod h1:4gOCgp6+NZnVqlKyZ/iBZFTAJKembaVENUpMkpg42fw=
github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 h1:DDGfHa7BWjL4YnC6+E63dPcxHo2sUxDIu8g3QgEJdRY=
github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/eapache/go-resiliency v1.2.0 h1:v7g92e/KSN71Rq7vSThKaWIq68fL4YHvWyiUKorFR1Q=
github.com/eapache/go-resiliency v1.2.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs=
github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21 h1:YEetp8/yCZMuEPMUDHG0CW/brkkEp8mzqk2+ODEitlw=
github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21/go.mod h1:+020luEh2TKB4/GOp8oxxtq0Daoen/Cii55CzbTV6DU=
github.com/eapache/queue v1.1.0 h1:YOEu7KNc61ntiQlcEeUIoDTJ2o8mQznoNvUhiigpIqc=
github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
github.com/fortytw2/leaktest v1.3.0 h1:u8491cBMTQ8ft8aeV+adlcytMZylmA5nnwwkRZjI8vw=
github.com/fortytw2/leaktest v1.3.0/go.mod h1:jDsjWgpAGjm2CA7WthBh/CdZYEPF31XHquHwclZch5g=
github.com/frankban/quicktest v1.7.2 h1:2QxQoC1TS09S7fhCPsrvqYdvP1H5M1P1ih5ABm3BTYk=
github.com/frankban/quicktest v1.7.2/go.mod h1:jaStnuzAqU1AJdCO0l53JDCJrVDKcS03DbaAcR7Ks/o=
github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/gopacket v1.1.18 h1:lum7VRA9kdlvBi7/v2p7/zcbkduHaCH/SVVyurs7OpY=
github.com/google/gopacket v1.1.18/go.mod h1:UdDNZ1OO62aGYVnPhxT1U6aI7ukYtA/kB8vaU0diBUM=
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
github.com/hashicorp/go-uuid v1.0.2 h1:cfejS+Tpcp13yd5nYHWDI6qVCny6wyX2Mt5SGur2IGE=
github.com/hashicorp/go-uuid v1.0.2/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
github.com/jcmturner/gofork v1.0.0 h1:J7uCkflzTEhUZ64xqKnkDxq3kzc96ajM1Gli5ktUem8=
github.com/jcmturner/gofork v1.0.0/go.mod h1:MK8+TM0La+2rjBD4jE12Kj1pCCxK7d2LK/UM3ncEo0o=
github.com/jmespath/go-jmespath v0.3.0 h1:OS12ieG61fsCg5+qLJ+SsW9NicxNkg3b25OyT2yCeUc=
github.com/jmespath/go-jmespath v0.3.0/go.mod h1:9QtRXoHjLGCJ5IBSaohpXITPlowMeeYCZ7fLUTSywik=
github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
github.com/klauspost/compress v1.9.8 h1:VMAMUUOh+gaxKTMk+zqbjsSjsIcUcL/LF4o63i82QyA=
github.com/klauspost/compress v1.9.8/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
github.com/klauspost/compress v1.10.10 h1:a/y8CglcM7gLGYmlbP/stPE5sR3hbhFRUjCBfd/0B3I=
github.com/klauspost/compress v1.10.10/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pretty v0.2.0 h1:s5hAObm+yFO5uHYt5dYjxi2rXrsnmRpJx4OYvIWUaQs=
github.com/kr/pretty v0.2.0/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/mattbaird/elastigo v0.0.0-20170123220020-2fe47fd29e4b h1:v29yPGHhOqw7VHEnTeQFAth3SsBrmwc8JfuhNY0G34k=
github.com/mattbaird/elastigo v0.0.0-20170123220020-2fe47fd29e4b/go.mod h1:5MWrJXKRQyhQdUCF+vu6U5c4nQpg70vW3eHaU0/AYbU=
github.com/pierrec/lz4 v2.4.1+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
github.com/pierrec/lz4 v2.5.2+incompatible h1:WCjObylUIOlKy/+7Abdn34TLIkXiA4UWUMhxq9m9ZXI=
github.com/pierrec/lz4 v2.5.2+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/rcrowley/go-metrics v0.0.0-20190826022208-cac0b30c2563/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
github.com/rcrowley/go-metrics v0.0.0-20200313005456-10cdbea86bc0 h1:MkV+77GLUNo5oJ0jf870itWm3D0Sjh7+Za9gazKc5LQ=
github.com/rcrowley/go-metrics v0.0.0-20200313005456-10cdbea86bc0/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s=
github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
github.com/xdg/scram v0.0.0-20180814205039-7eeb5667e42c/go.mod h1:lB8K/P019DLNhemzwFU4jHLhdvlE6uDZjXFejJXr49I=
github.com/xdg/stringprep v1.0.0/go.mod h1:Jhud4/sHMO4oL310DaZAKk9ZaJ08SJfe+sJh0HrGL1Y=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20200204104054-c9f3fb736b72 h1:+ELyKg6m8UBf0nPFSqD0mi7zUfwPyXo23HNjMnXPz7w=
golang.org/x/crypto v0.0.0-20200204104054-c9f3fb736b72/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20200202094626-16171245cfb2 h1:CCH4IOTTfewWjGOlSp+zGcjutRKlBEZQ6wTn8ozI/nI=
golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200707034311-ab3426394381 h1:VXak5I6aEWmAXeQjA+QSZzlgNrpq9mjcfDemuexIKsU=
golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190405154228-4b34438f7a67/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd h1:xhmwyvizuTgC2qz7ZlMluP20uW+C3Rm0FD/WLDX8884=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/jcmturner/aescts.v1 v1.0.1 h1:cVVZBK2b1zY26haWB4vbBiZrfFQnfbTVrE3xZq6hrEw=
gopkg.in/jcmturner/aescts.v1 v1.0.1/go.mod h1:nsR8qBOg+OucoIW+WMhB3GspUQXq9XorLnQb9XtvcOo=
gopkg.in/jcmturner/dnsutils.v1 v1.0.1 h1:cIuC1OLRGZrld+16ZJvvZxVJeKPsvd5eUIvxfoN5hSM=
gopkg.in/jcmturner/dnsutils.v1 v1.0.1/go.mod h1:m3v+5svpVOhtFAP/wSz+yzh4Mc0Fg7eRhxkJMWSIz9Q=
gopkg.in/jcmturner/goidentity.v3 v3.0.0 h1:1duIyWiTaYvVx3YX2CYtpJbUFd7/UuPYCfgXtQ3VTbI=
gopkg.in/jcmturner/goidentity.v3 v3.0.0/go.mod h1:oG2kH0IvSYNIu80dVAyu/yoefjq1mNfM5bm88whjWx4=
gopkg.in/jcmturner/gokrb5.v7 v7.5.0 h1:a9tsXlIDD9SKxotJMK3niV7rPZAJeX2aD/0yg3qlIrg=
gopkg.in/jcmturner/gokrb5.v7 v7.5.0/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuvyavf11/WM=
gopkg.in/jcmturner/rpc.v1 v1.1.0 h1:QHIUxTX1ISuAv9dD2wJ9HWQVuWDX/Zc0PfeC2tjc4rU=
gopkg.in/jcmturner/rpc.v1 v1.1.0/go.mod h1:YIdkC4XfD6GXbzje11McwsDuOlZQSb9W4vfLvuNnlv8=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+15 -60
View File
@@ -6,56 +6,38 @@ import (
"flag"
"fmt"
"log"
"net/http"
"net/http/httputil"
_ "net/http/pprof"
"os"
"os/signal"
"runtime"
_ "runtime/debug"
"runtime/pprof"
"syscall"
"time"
)
var (
mode string
cpuprofile = flag.String("cpuprofile", "", "write cpu profile to file")
memprofile = flag.String("memprofile", "", "write memory profile to this file")
)
func loggingMiddleware(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
rb, _ := httputil.DumpRequest(r, false)
log.Println(string(rb))
next.ServeHTTP(w, r)
})
}
func main() {
// // Don't exit on panic
// defer func() {
// if r := recover(); r != nil {
// fmt.Printf("PANIC: pkg: %v %s \n", r, debug.Stack())
// }
// }()
// If not set via env cariable
if len(os.Getenv("GOMAXPROCS")) == 0 {
runtime.GOMAXPROCS(runtime.NumCPU() * 2)
}
args := os.Args[1:]
var plugins *InOutPlugins
if len(args) > 0 && args[0] == "file-server" {
if len(args) != 2 {
log.Fatal("You should specify port and IP (optional) for the file server. Example: `gor file-server :80`")
}
dir, _ := os.Getwd()
fmt.Println("Version:", VERSION)
Debug(0, "Started example file server for current directory on address ", args[1])
flag.Parse()
InitPlugins()
log.Fatal(http.ListenAndServe(args[1], loggingMiddleware(http.FileServer(http.Dir(dir)))))
} else {
flag.Parse()
checkSettings()
plugins = NewPlugins()
}
log.Printf("[PPID %d and PID %d] Version:%s\n", os.Getppid(), os.Getpid(), VERSION)
if len(plugins.Inputs) == 0 || len(plugins.Outputs) == 0 {
if len(Plugins.Inputs) == 0 || len(Plugins.Outputs) == 0 {
log.Fatal("Required at least 1 input and 1 output")
}
@@ -67,35 +49,7 @@ func main() {
profileCPU(*cpuprofile)
}
if Settings.Pprof != "" {
go func() {
log.Println(http.ListenAndServe(Settings.Pprof, nil))
}()
}
closeCh := make(chan int)
emitter := NewEmitter(closeCh)
go emitter.Start(plugins, Settings.Middleware)
if Settings.ExitAfter > 0 {
log.Printf("Running gor for a duration of %s\n", Settings.ExitAfter)
time.AfterFunc(Settings.ExitAfter, func() {
fmt.Printf("gor run timeout %s\n", Settings.ExitAfter)
close(closeCh)
})
}
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, syscall.SIGTERM)
exit := 0
select {
case <-c:
exit = 1
case <-closeCh:
exit = 0
}
emitter.Close()
os.Exit(exit)
Start(nil)
}
func profileCPU(cpuprofile string) {
@@ -109,6 +63,7 @@ func profileCPU(cpuprofile string) {
time.AfterFunc(30*time.Second, func() {
pprof.StopCPUProfile()
f.Close()
log.Println("Stop profiling after 30 seconds")
})
}
}
+13 -10
View File
@@ -1,42 +1,46 @@
package main
import (
"log"
"runtime"
"strconv"
"time"
)
const (
rate = 5
)
type GorStat struct {
statName string
rateMs int
latest int
mean int
max int
count int
}
func NewGorStat(statName string, rateMs int) (s *GorStat) {
func NewGorStat(statName string) (s *GorStat) {
s = new(GorStat)
s.statName = statName
s.rateMs = rateMs
s.latest = 0
s.mean = 0
s.max = 0
s.count = 0
if Settings.Stats {
if Settings.stats {
log.Println(s.statName + ":latest,mean,max,count,count/second,gcount")
go s.reportStats()
}
return
}
func (s *GorStat) Write(latest int) {
if Settings.Stats {
if Settings.stats {
if latest > s.max {
s.max = latest
}
if latest != 0 {
s.mean = ((s.mean * s.count) + latest) / (s.count + 1)
s.mean = (s.mean + latest) / 2
}
s.latest = latest
s.count = s.count + 1
@@ -51,14 +55,13 @@ func (s *GorStat) Reset() {
}
func (s *GorStat) String() string {
return s.statName + ":" + strconv.Itoa(s.latest) + "," + strconv.Itoa(s.mean) + "," + strconv.Itoa(s.max) + "," + strconv.Itoa(s.count) + "," + strconv.Itoa(s.count/(s.rateMs/1000.0)) + "," + strconv.Itoa(runtime.NumGoroutine())
return s.statName + ":" + strconv.Itoa(s.latest) + "," + strconv.Itoa(s.mean) + "," + strconv.Itoa(s.max) + "," + strconv.Itoa(s.count) + "," + strconv.Itoa(s.count/rate) + "," + strconv.Itoa(runtime.NumGoroutine())
}
func (s *GorStat) reportStats() {
Debug(0, "\n", s.statName+":latest,mean,max,count,count/second,gcount")
for {
Debug(0, "\n", s)
log.Println(s)
s.Reset()
time.Sleep(time.Duration(s.rateMs) * time.Millisecond)
time.Sleep(rate * time.Second)
}
}
-46
View File
@@ -1,46 +0,0 @@
require "language/go"
class Gor < Formula
desc "Real-time HTTP traffic replay tool written in Go"
homepage "https://gortool.com"
url "https://github.com/buger/gor/archive/v0.14.0.tar.gz"
sha256 "62260a6f5cabde571b91d5762fba9c47691643df0a58565cbe808854cd064dc8"
head "https://github.com/buger/gor.git"
bottle do
cellar :any_skip_relocation
sha256 "c382403de70a41b7445920a02051f5e82030704aaaae70cfcd4e8f401cc87f6a" => :el_capitan
sha256 "4b76b3785584897800e87967f1af9510208faefe46f57d7bd6f8b40a7133c19b" => :yosemite
sha256 "d186cb1566d33ab8f78215e69934f49dd96becb1c236905b4502d94399ae1974" => :mavericks
end
depends_on "go" => :build
go_resource "github.com/bitly/go-hostpool" do
url "https://github.com/bitly/go-hostpool.git",
:revision => "d0e59c22a56e8dadfed24f74f452cea5a52722d2"
end
go_resource "github.com/buger/elastigo" do
url "https://github.com/buger/elastigo.git",
:revision => "23fcfd9db0d8be2189a98fdab77a4c90fcc3a1e9"
end
go_resource "github.com/google/gopacket" do
url "https://github.com/google/gopacket.git",
:revision => "aa09ced736460d76535444c825932a0742975f7d"
end
def install
ENV["GOPATH"] = buildpath
mkdir_p buildpath/"src/github.com/buger/"
ln_sf buildpath, buildpath/"src/github.com/buger/gor"
Language::Go.stage_deps resources, buildpath/"src"
system "go", "build", "-o", "#{bin}/gor", "-ldflags", "-X main.VERSION \"#{version}\""
end
test do
assert_match version.to_s, shell_output("#{bin}/gor", 1)
end
end
+48 -324
View File
@@ -1,35 +1,19 @@
package main
import (
"bufio"
"bytes"
"crypto/tls"
"encoding/base64"
"github.com/buger/gor/proto"
"io"
"log"
"net"
"net/http"
"net/http/httputil"
"net/url"
"runtime/debug"
"strconv"
"strings"
"sync"
"syscall"
"time"
"github.com/buger/goreplay/proto"
)
var httpMu sync.Mutex
const (
readChunkSize = 64 * 1024
maxResponseSize = 1073741824
)
var chunkedSuffix = []byte("0\r\n\r\n")
var defaultPorts = map[string]string{
"http": "80",
"https": "443",
@@ -42,20 +26,15 @@ type HTTPClientConfig struct {
ConnectionTimeout time.Duration
Timeout time.Duration
ResponseBufferSize int
CompatibilityMode bool
}
type HTTPClient struct {
baseURL string
scheme string
host string
auth string
conn net.Conn
proxy *url.URL
proxyAuth string
respBuf []byte
config *HTTPClientConfig
goClient *http.Client
redirectsCount int
}
@@ -65,12 +44,15 @@ func NewHTTPClient(baseURL string, config *HTTPClientConfig) *HTTPClient {
}
u, _ := url.Parse(baseURL)
if config.Timeout == 0 {
config.Timeout = time.Second
if !strings.Contains(u.Host, ":") {
if u.Scheme != "http" {
u.Host += ":" + defaultPorts[u.Scheme]
}
}
config.ConnectionTimeout = config.Timeout
if config.Timeout.Nanoseconds() == 0 {
config.Timeout = 5 * time.Second
}
if config.ResponseBufferSize == 0 {
config.ResponseBufferSize = 100 * 1024 // 100kb
@@ -83,93 +65,26 @@ func NewHTTPClient(baseURL string, config *HTTPClientConfig) *HTTPClient {
client.respBuf = make([]byte, config.ResponseBufferSize)
client.config = config
if config.CompatibilityMode {
client.goClient = &http.Client{
// #TODO
// CheckRedirect: redirectPolicyFunc,
}
}
if u.User != nil {
client.auth = "Basic " + base64.StdEncoding.EncodeToString([]byte(u.User.String()))
}
client.proxy, _ = http.ProxyFromEnvironment(&http.Request{URL: u})
if client.isProxy() && client.proxy.User != nil {
client.proxyAuth = "Basic " + base64.StdEncoding.EncodeToString([]byte(client.proxy.User.String()))
}
return client
}
func (c *HTTPClient) Connect() (err error) {
c.Disconnect()
var toDial string
if !strings.Contains(c.host, ":") {
toDial = c.host + ":" + defaultPorts[c.scheme]
c.conn, err = net.DialTimeout("tcp", c.host+":80", c.config.ConnectionTimeout)
} else {
toDial = c.host
}
if c.isProxy() {
if c.proxy.Scheme != "http" {
panic("Unsupported HTTP Proxy method")
}
Debug(3, "[HTTPClient] Connecting to proxy", c.proxy.String(), "<>", toDial)
c.conn, err = net.DialTimeout("tcp", c.proxy.Host, c.config.ConnectionTimeout)
if err != nil {
return
}
if c.scheme == "https" {
c.conn.Write([]byte("CONNECT " + toDial + " HTTP/1.1\r\n"))
if c.proxyAuth != "" {
c.conn.Write([]byte("Proxy-Authorization: " + c.proxyAuth + "\r\n"))
}
c.conn.Write([]byte("\r\n"))
br := bufio.NewReader(c.conn)
l, _, err := br.ReadLine()
if err != nil {
return err
}
if len(l) < 12 {
panic("HTTP proxy did not respond correctly")
}
status := l[9:12]
if !bytes.Equal(status, []byte("200")) {
panic("HTTP proxy did not respond correctly")
}
for {
// Read until we find the empty line
l, _, err := br.ReadLine()
if err != nil {
return err
}
if len(l) == 0 {
break
}
}
}
Debug(3, "[HTTPClient] Proxy successfully connected")
} else {
c.conn, err = net.DialTimeout("tcp", toDial, c.config.ConnectionTimeout)
if err != nil {
return
}
c.conn, err = net.DialTimeout("tcp", c.host, c.config.ConnectionTimeout)
}
if c.scheme == "https" {
// Wrap our socket in TLS
Debug(3, "[HTTPClient] Wrapping socket in TLS", c.host)
tlsConn := tls.Client(c.conn, &tls.Config{InsecureSkipVerify: true, ServerName: c.host})
tlsConn := tls.Client(c.conn, &tls.Config{InsecureSkipVerify: true})
if err = tlsConn.Handshake(); err != nil {
return
}
c.conn = tlsConn
Debug(3, "[HTTPClient] Successfully wrapped in TLS")
}
return
@@ -179,83 +94,46 @@ func (c *HTTPClient) Disconnect() {
if c.conn != nil {
c.conn.Close()
c.conn = nil
Debug(3, "[HTTP] Disconnected: ", c.baseURL)
Debug("[HTTP] Disconnected: ", c.baseURL)
}
}
func (c *HTTPClient) isAlive(readBytes *int) bool {
func (c *HTTPClient) isAlive() bool {
one := make([]byte, 1)
// Ready 1 byte from socket without timeout to check if it not closed
c.conn.SetReadDeadline(time.Now().Add(time.Millisecond))
n, err := c.conn.Read(c.respBuf[:1])
_, err := c.conn.Read(one)
if err == io.EOF {
Debug(3, "[HTTPClient] connection closed, reconnecting")
if err == nil {
return true
} else if err == io.EOF {
return false
} else if err == syscall.EPIPE {
Debug("Detected broken pipe.", err)
return false
}
if err == syscall.EPIPE {
Debug(3, "Detected broken pipe.", err)
return false
}
if n != 0 {
*readBytes += n
Debug(3, "[HTTPClient] isAlive readBytes ", *readBytes)
}
return true
}
func (c *HTTPClient) SendGoClient(data []byte) ([]byte, error) {
var req *http.Request
var resp *http.Response
var err error
req, err = http.ReadRequest(bufio.NewReader(bytes.NewBuffer(data)))
if err != nil {
return nil, err
}
if !c.config.OriginalHost {
req.Host = c.host
}
if c.auth != "" {
req.Header.Add("Authorization", c.auth)
}
req.URL, _ = url.ParseRequestURI(c.scheme + "://" + c.host + req.RequestURI)
req.RequestURI = ""
resp, err = c.goClient.Do(req)
if err != nil {
return nil, err
}
return httputil.DumpResponse(resp, true)
}
func (c *HTTPClient) Send(data []byte) (response []byte, err error) {
// Don't exit on panic
defer func() {
if r := recover(); r != nil {
Debug(3, "[HTTPClient]", r, string(data))
Debug("[HTTPClient]", r, string(data))
if _, ok := r.(error); ok {
if _, ok := r.(error); !ok {
log.Println("[HTTPClient] Failed to send request: ", string(data))
log.Println("[HTTPClient] Response: ", string(response))
log.Println("PANIC: pkg:", r, string(debug.Stack()))
log.Println("PANIC: pkg:", r, debug.Stack())
}
}
}()
if c.config.CompatibilityMode {
return c.SendGoClient(data)
}
var readBytes int
if c.conn == nil || !c.isAlive(&readBytes) {
Debug(3, "[HTTPClient] Connecting:", c.baseURL)
if c.conn == nil || !c.isAlive() {
Debug("[HTTPClient] Connecting:", c.baseURL)
if err = c.Connect(); err != nil {
Debug(1, "[HTTPClient] Connection error:", err)
log.Println("[HTTPClient] Connection error:", err)
response = errorPayload(HTTP_CONNECTION_ERROR)
return
}
@@ -269,182 +147,39 @@ func (c *HTTPClient) Send(data []byte) (response []byte, err error) {
data = proto.SetHost(data, []byte(c.baseURL), []byte(c.host))
}
if c.isProxy() && c.scheme == "http" {
path := proto.Path(data)
if len(path) > 0 && path[0] == '/' {
data = proto.SetPath(data, c.proxyPath(path))
if c.proxyAuth != "" {
data = proto.SetHeader(data, []byte("Proxy-Authorization"), []byte(c.proxyAuth))
}
}
}
if c.auth != "" {
data = proto.SetHeader(data, []byte("Authorization"), []byte(c.auth))
}
if c.config.Debug {
Debug(3, "[HTTPClient] Sending:", string(data))
Debug("[HTTPClient] Sending:", string(data))
}
return c.send(data, readBytes, timeout)
}
func (c *HTTPClient) send(data []byte, readBytes int, timeout time.Time) (response []byte, err error) {
var payload []byte
var n int
if _, err = c.conn.Write(data); err != nil {
Debug(1, "[HTTPClient] Write error:", err, c.baseURL)
Debug("[HTTPClient] Write error:", err, c.baseURL)
response = errorPayload(HTTP_TIMEOUT)
c.Disconnect()
return
}
var currentChunk []byte
timeout = time.Now().Add(c.config.Timeout)
chunked := false
contentLength := -1
currentContentLength := 0
chunks := 0
c.conn.SetReadDeadline(timeout)
n, err := c.conn.Read(c.respBuf)
for {
c.conn.SetReadDeadline(timeout)
if readBytes < len(c.respBuf) {
n, err = c.conn.Read(c.respBuf[readBytes:])
readBytes += n
chunks++
// First chunk
if chunked || contentLength != -1 {
currentContentLength += n
} else {
// If headers are finished
var firstEmptyLine = bytes.Index(c.respBuf[:readBytes], proto.EmptyLine)
if firstEmptyLine != -1 {
if bytes.Equal(proto.Header(c.respBuf[:readBytes], []byte("Transfer-Encoding")), []byte("chunked")) {
chunked = true
} else {
status, _ := strconv.Atoi(string(proto.Status(c.respBuf[:readBytes])))
// We want to soak up all 100 Continues received to get the real result code
if status >= 100 && status < 200 {
timeout = time.Now().Add(c.config.Timeout)
var deleteLen = firstEmptyLine + len(proto.EmptyLine)
copy(c.respBuf, c.respBuf[deleteLen:readBytes])
readBytes -= deleteLen
chunks--
continue
} else if status == 204 || status == 304 {
contentLength = 0
break
} else {
l := proto.Header(c.respBuf[:readBytes], []byte("Content-Length"))
if len(l) > 0 {
contentLength, _ = strconv.Atoi(string(l))
}
}
}
currentContentLength += len(proto.Body(c.respBuf[:readBytes]))
}
}
if chunked {
// Check if chunked message finished
if bytes.HasSuffix(c.respBuf[:readBytes], chunkedSuffix) {
break
}
} else if contentLength != -1 {
if currentContentLength > contentLength {
Debug(3, "[HTTPClient] disconnected, wrong length", currentContentLength, contentLength)
c.Disconnect()
break
} else if currentContentLength == contentLength {
break
}
}
if err != nil {
if err == io.EOF {
err = nil
}
break
}
} else {
if currentChunk == nil {
currentChunk = make([]byte, readChunkSize)
}
n, err = c.conn.Read(currentChunk)
readBytes += int(n)
chunks++
currentContentLength += n
if chunked {
// Check if chunked message finished
if bytes.HasSuffix(currentChunk[:n], chunkedSuffix) {
break
}
} else if contentLength != -1 {
if currentContentLength > contentLength {
Debug(3, "[HTTPClient] disconnected, wrong length", currentContentLength, contentLength)
c.Disconnect()
break
} else if currentContentLength == contentLength {
break
}
} else {
Debug(3, "[HTTPClient] disconnected, can't find Content-Length or Chunked")
c.Disconnect()
break
}
if err == io.EOF {
break
} else if err != nil {
Debug(3, "[HTTPClient] Read the whole body error:", err, c.baseURL)
break
}
}
if readBytes >= maxResponseSize {
Debug(3, "[HTTPClient] Body is more than the max size", maxResponseSize,
c.baseURL)
break
}
// For following chunks expect less timeout
timeout = time.Now().Add(c.config.Timeout / 5)
// If response large then our buffer, we need to read all response buffer
// Otherwise it will corrupt response of next request
// Parsing response body is non trivial thing, especially with keep-alive
// Simples case is to to close connection if response too large
//
// See https://github.com/buger/gor/issues/184
if n == len(c.respBuf) {
c.Disconnect()
}
if err != nil && readBytes == 0 {
Debug(3, "[HTTPClient] Response read timeout error", err, c.conn, readBytes, string(c.respBuf[:readBytes]))
if err != nil {
Debug("[HTTPClient] Response read error", err, c.conn)
response = errorPayload(HTTP_TIMEOUT)
c.Disconnect()
return
}
if readBytes < 4 || string(c.respBuf[:4]) != "HTTP" {
maxRead := 100
if readBytes < maxRead {
maxRead = readBytes
}
Debug(3, "[HTTPClient] Response read unknown error", err, c.conn, readBytes, string(c.respBuf[:maxRead]))
response = errorPayload(HTTP_UNKNOWN_ERROR)
c.Disconnect()
return
}
if readBytes > len(c.respBuf) {
readBytes = len(c.respBuf)
}
payload = make([]byte, readBytes)
copy(payload, c.respBuf[:readBytes])
payload := c.respBuf[:n]
if c.config.Debug {
Debug(3, "[HTTPClient] Received:", string(payload))
Debug("[HTTPClient] Received:", string(payload))
}
if c.config.FollowRedirects > 0 && c.redirectsCount < c.config.FollowRedirects {
@@ -455,19 +190,16 @@ func (c *HTTPClient) send(data []byte, readBytes int, timeout time.Time) (respon
c.redirectsCount++
location := proto.Header(payload, []byte("Location"))
redirectPayload := proto.SetPath(data, location)
redirectPayload := []byte("GET " + string(location) + " HTTP/1.1\r\n\r\n")
Debug(3, "[HTTPClient] Redirecting to: "+string(location))
if c.config.Debug {
Debug("[HTTPClient] Redirecting to: " + string(location))
}
return c.Send(redirectPayload)
}
}
if bytes.Equal(proto.Status(payload), []byte("400")) {
Debug(3, "[HTTPClient] Closed connection on 400 response")
c.Disconnect()
}
c.redirectsCount = 0
return payload, err
@@ -487,14 +219,6 @@ func (c *HTTPClient) Post(path string, body []byte) (response []byte, err error)
return c.Send([]byte(payload))
}
func (c *HTTPClient) proxyPath(path []byte) []byte {
return append([]byte(c.scheme+"://"+c.host), path...)
}
func (c *HTTPClient) isProxy() bool {
return c.proxy != nil
}
const (
// https://support.cloudflare.com/hc/en-us/articles/200171936-Error-520-Web-server-is-returning-an-unknown-error
HTTP_UNKNOWN_ERROR = "520"
+102 -234
View File
@@ -3,6 +3,7 @@ package main
import (
"bytes"
"crypto/rand"
"github.com/buger/gor/proto"
"io/ioutil"
_ "log"
"net"
@@ -10,12 +11,10 @@ import (
"net/http/httptest"
"net/http/httputil"
_ "reflect"
"strings"
"sync"
"testing"
"time"
"github.com/buger/goreplay/proto"
_ "time"
)
func TestHTTPClientURLPort(t *testing.T) {
@@ -25,8 +24,8 @@ func TestHTTPClientURLPort(t *testing.T) {
}
c2 := NewHTTPClient("https://example.com", &HTTPClientConfig{})
if c2.baseURL != "https://example.com" {
t.Error("Sould not add 443 port for https:", c2.baseURL)
if c2.baseURL != "https://example.com:443" {
t.Error("Sould add 443 port for https:", c2.baseURL)
}
c3 := NewHTTPClient("https://example.com:1", &HTTPClientConfig{})
@@ -87,121 +86,37 @@ func TestHTTPClientSend(t *testing.T) {
client.Send(payload("POST"))
wg.Wait()
client = NewHTTPClient(server.URL, &HTTPClientConfig{Debug: true, CompatibilityMode: true})
wg.Add(4)
if _, err := client.Send(payload("POST")); err != nil {
t.Fatal(err.Error())
}
if _, err := client.Send(payload("GET")); err != nil {
t.Fatal(err.Error())
}
if _, err := client.Send(payload("POST_CHUNKED")); err != nil {
t.Fatal(err.Error())
}
if _, err := client.Send(payload("POST")); err != nil {
t.Fatal(err.Error())
}
wg.Wait()
}
func TestHTTPClientResonseByClose(t *testing.T) {
wg := new(sync.WaitGroup)
payload := []byte("GET / HTTP/1.1\r\n\r\n")
ln, _ := net.Listen("tcp", ":0")
go func() {
for {
conn, _ := ln.Accept()
buf := make([]byte, 4096)
conn.Read(buf)
conn.Write([]byte("HTTP/1.1 200 OK\r\n\r\n"))
conn.Write([]byte("ab"))
conn.Close()
wg.Done()
}
}()
client := NewHTTPClient(ln.Addr().String(), &HTTPClientConfig{Debug: true})
wg.Add(1)
resp, _ := client.Send(payload)
if !bytes.Equal(resp, []byte("HTTP/1.1 200 OK\r\n\r\nab")) {
t.Error("Should return valid response", string(resp))
}
wg.Wait()
}
// https://github.com/buger/gor/issues/184
func TestHTTPClientResponseBuffer(t *testing.T) {
testCases := []struct {
name string
responseSize int
buffserSize int
expectedSize int
timeout time.Duration
}{
{"Chunked, buffer overflow", 10 * 1024, 1024, 1024, 50 * time.Millisecond},
wg := new(sync.WaitGroup)
{"Chunked, fits buffer", 10 * 1024, 64 * 1024, 10*1024 + 145 /* headers length + chunked meta */, 50 * time.Millisecond},
payload := []byte("GET / HTTP/1.1\r\n\r\n")
{"Content-Length, buffer overflow", 1024, 1000, 1000, 50 * time.Millisecond},
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
{"Content-Length, fits buffer", 1024, 64 * 1024, 1024 + 118, 50 * time.Millisecond},
size := 10 * 1024 // 10kb
rb := make([]byte, size)
rand.Read(rb)
w.Write(rb)
wg.Done()
}))
defer server.Close()
client := NewHTTPClient(server.URL, &HTTPClientConfig{Debug: false, ResponseBufferSize: 1024})
wg.Add(2)
client.Send(payload)
resp, _ := client.Send(payload)
if !bytes.Equal(resp[0:8], []byte("HTTP/1.1")) {
t.Error("Response buffer contains data from previous request", string(resp[0:5]))
}
for _, tc := range testCases {
wg := new(sync.WaitGroup)
payload := []byte("GET / HTTP/1.1\r\n\r\n")
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
size := tc.responseSize // 1kb
rb := make([]byte, size)
rand.Read(rb)
w.Write(rb[:size/2])
w.Write(rb[size/2:])
wg.Done()
}))
client := NewHTTPClient(server.URL, &HTTPClientConfig{Debug: true, ResponseBufferSize: tc.buffserSize, Timeout: 100 * time.Millisecond})
wg.Add(2)
start := time.Now()
client.Send(payload)
resp, err := client.Send(payload)
stop := time.Now()
if err != nil {
t.Error("Request error", err)
}
if stop.Sub(start) > tc.timeout {
t.Error("Request took too long", stop.Sub(start), tc.timeout)
}
if len(resp) != tc.expectedSize {
t.Error(tc.name, " - Wrong response size:", tc.expectedSize, len(resp))
} else {
if !bytes.Equal(resp[0:8], []byte("HTTP/1.1")) {
t.Error(tc.name, " - Response buffer contains data from previous request", string(resp), len(resp))
}
}
wg.Wait()
server.Close()
}
wg.Wait()
}
func TestHTTPClientHTTPSSend(t *testing.T) {
@@ -298,10 +213,11 @@ func TestHTTPClientServerNoKeepAlive(t *testing.T) {
}
buf := make([]byte, 4096)
_, err = conn.Read(buf)
reqLen, err := conn.Read(buf)
if err != nil {
t.Error("Error reading:", err.Error())
}
Debug("Received: ", string(buf[0:reqLen]))
conn.Write([]byte("OK"))
// No keep-alive connections
@@ -376,74 +292,6 @@ func TestHTTPClientRedirectLimit(t *testing.T) {
wg.Wait()
}
func TestHTTPClientKeepHeadersRedirect(t *testing.T) {
wg := new(sync.WaitGroup)
GETPayload := []byte("GET / HTTP/1.1\r\n\r\n")
GETPayload = proto.AddHeader(GETPayload, []byte("keep-header"), []byte("true"))
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path == "/" {
http.Redirect(w, r, "/new", 301)
}
if r.Header.Get("keep-header") != "true" {
t.Errorf("Header keep-header was incorrect, got: %s, want: %s.", r.Header.Get("keep-header"), "true")
}
wg.Done()
}))
defer server.Close()
client := NewHTTPClient(server.URL, &HTTPClientConfig{FollowRedirects: 1, Debug: false})
wg.Add(2)
client.Send(GETPayload)
wg.Wait()
}
func TestHTTPClientBasicAuth(t *testing.T) {
wg := new(sync.WaitGroup)
wg.Add(2)
GETPayload := []byte("GET / HTTP/1.1\r\n\r\n")
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
user, pass, _ := r.BasicAuth()
if user != "user" || pass != "pass" {
http.Error(w, "Unauthorized.", 401)
wg.Done()
return
}
wg.Done()
}))
defer server.Close()
client := NewHTTPClient(server.URL, &HTTPClientConfig{Debug: false})
resp, _ := client.Send(GETPayload)
client.Disconnect()
if !bytes.Equal(proto.Status(resp), []byte("401")) {
t.Error("Should return unauthorized error", string(resp))
}
authUrl := strings.Replace(server.URL, "http://", "http://user:pass@", -1)
client = NewHTTPClient(authUrl, &HTTPClientConfig{Debug: false})
resp, _ = client.Send(GETPayload)
client.Disconnect()
if !bytes.Equal(proto.Status(resp), []byte("200")) {
t.Error("Should return proper response", string(resp))
}
wg.Wait()
}
func TestHTTPClientHandleHTTP10(t *testing.T) {
wg := new(sync.WaitGroup)
@@ -467,66 +315,86 @@ func TestHTTPClientHandleHTTP10(t *testing.T) {
wg.Wait()
}
// func TestHTTPClientErrors(t *testing.T) {
// req := []byte("GET http://foobar.com/path HTTP/1.0\r\n\r\n")
func TestHTTPClientErrors(t *testing.T) {
req := []byte("GET http://foobar.com/path HTTP/1.0\r\n\r\n")
// // Port not exists
// client := NewHTTPClient("http://127.0.0.1:1", &HTTPClientConfig{Debug: true})
// if resp, err := client.Send(req); err != nil {
// if s := proto.Status(resp); !bytes.Equal(s, []byte("521")) {
// t.Error("Should return status 521 for connection refused, instead:", string(s), err)
// }
// } else {
// t.Error("Should throw error")
// }
// Port not exists
client := NewHTTPClient("http://127.0.0.1:1", &HTTPClientConfig{Debug: true})
if resp, err := client.Send(req); err != nil {
if s := proto.Status(resp); !bytes.Equal(s, []byte("521")) {
t.Error("Should return status 521 for connection refused, instead:", string(s))
}
} else {
t.Error("Should throw error")
}
// client = NewHTTPClient("http://not.existing", &HTTPClientConfig{Debug: true})
// if resp, err := client.Send(req); err != nil {
// if s := proto.Status(resp); !bytes.Equal(s, []byte("521")) {
// t.Error("Should return status 521 for no such host, instead:", string(s))
// }
// } else {
// t.Error("Should throw error")
// }
client = NewHTTPClient("http://not.existing", &HTTPClientConfig{Debug: true})
if resp, err := client.Send(req); err != nil {
if s := proto.Status(resp); !bytes.Equal(s, []byte("521")) {
t.Error("Should return status 521 for no such host, instead:", string(s))
}
} else {
t.Error("Should throw error")
}
// // Non routable IP address to simulate connection timeout
// client = NewHTTPClient("http://10.255.255.1", &HTTPClientConfig{Debug: true, ConnectionTimeout: 100 * time.Millisecond})
// Non routable IP address to simulate connection timeout
client = NewHTTPClient("http://10.255.255.1", &HTTPClientConfig{Debug: true, ConnectionTimeout: 100 * time.Millisecond})
// if resp, err := client.Send(req); err != nil {
// if s := proto.Status(resp); !bytes.Equal(s, []byte("521")) {
// t.Error("Should return status 521 for io/timeout:", string(s))
// }
// } else {
// t.Error("Should throw error")
// }
if resp, err := client.Send(req); err != nil {
if s := proto.Status(resp); !bytes.Equal(s, []byte("521")) {
t.Error("Should return status 521 for io/timeout:", string(s))
}
} else {
t.Error("Should throw error")
}
// // Connecting but io timeout on read
// ln, _ := net.Listen("tcp", "127.0.0.1:0")
// client = NewHTTPClient("http://"+ln.Addr().String(), &HTTPClientConfig{Debug: true, Timeout: 10 * time.Millisecond})
// defer ln.Close()
// Connecting but io timeout on read
ln, _ := net.Listen("tcp", "127.0.0.1:0")
client = NewHTTPClient("http://"+ln.Addr().String(), &HTTPClientConfig{Debug: true, Timeout: 10 * time.Millisecond})
defer ln.Close()
// if resp, err := client.Send(req); err != nil {
// if s := proto.Status(resp); !bytes.Equal(s, []byte("524")) {
// t.Error("Should return status 524 for io read, instead:", string(s))
// }
// } else {
// t.Error("Should throw error")
// }
if resp, err := client.Send(req); err != nil {
if s := proto.Status(resp); !bytes.Equal(s, []byte("524")) {
t.Error("Should return status 524 for io read, instead:", string(s))
}
} else {
t.Error("Should throw error")
}
// // Response read error read tcp [::1]:51128: connection reset by peer &{{0xc20802a000}}
// ln1, _ := net.Listen("tcp", "127.0.0.1:0")
// go func() {
// ln1.Accept()
// }()
// defer ln1.Close()
// Response read error read tcp [::1]:51128: connection reset by peer &{{0xc20802a000}}
ln1, _ := net.Listen("tcp", "127.0.0.1:0")
go func() {
ln1.Accept()
}()
defer ln1.Close()
// client = NewHTTPClient("http://"+ln1.Addr().String(), &HTTPClientConfig{Debug: true, Timeout: 10 * time.Millisecond})
client = NewHTTPClient("http://"+ln1.Addr().String(), &HTTPClientConfig{Debug: true, Timeout: 10 * time.Millisecond})
// if resp, err := client.Send(req); err != nil {
// if s := proto.Status(resp); !bytes.Equal(s, []byte("524")) {
// t.Error("Should return status 524 for connection reset by peer, instead:", string(s))
// }
// } else {
// t.Error("Should throw error")
// }
// }
if resp, err := client.Send(req); err != nil {
if s := proto.Status(resp); !bytes.Equal(s, []byte("524")) {
t.Error("Should return status 524 for connection reset by peer, instead:", string(s))
}
} else {
t.Error("Should throw error")
}
ln2, _ := net.Listen("tcp", "127.0.0.1:0")
go func() {
buf := make([]byte, 64*1024)
conn, _ := ln2.Accept()
conn.Read(buf)
defer conn.Close()
}()
defer ln2.Close()
client = NewHTTPClient("http://"+ln2.Addr().String(), &HTTPClientConfig{Debug: true, Timeout: 10 * time.Millisecond})
if resp, err := client.Send(req); err != nil {
if s := proto.Status(resp); !bytes.Equal(s, []byte("524")) {
t.Error("Should return status 524 for connection reset by peer, instead:", string(s))
}
} else {
t.Error("Should throw error")
}
}
+33 -72
View File
@@ -2,11 +2,9 @@ package main
import (
"bytes"
"encoding/base64"
"hash/fnv"
"strings"
"github.com/buger/goreplay/proto"
"github.com/buger/gor/proto"
)
type HTTPModifier struct {
@@ -15,18 +13,16 @@ type HTTPModifier struct {
func NewHTTPModifier(config *HTTPModifierConfig) *HTTPModifier {
// Optimization to skip modifier completely if we do not need it
if len(config.URLRegexp) == 0 &&
len(config.URLNegativeRegexp) == 0 &&
len(config.URLRewrite) == 0 &&
len(config.HeaderRewrite) == 0 &&
len(config.HeaderFilters) == 0 &&
len(config.HeaderNegativeFilters) == 0 &&
len(config.HeaderBasicAuthFilters) == 0 &&
len(config.HeaderHashFilters) == 0 &&
len(config.ParamHashFilters) == 0 &&
len(config.Params) == 0 &&
len(config.Headers) == 0 &&
len(config.Methods) == 0 {
if len(config.urlRegexp) == 0 &&
len(config.urlNegativeRegexp) == 0 &&
len(config.urlRewrite) == 0 &&
len(config.headerFilters) == 0 &&
len(config.headerNegativeFilters) == 0 &&
len(config.headerHashFilters) == 0 &&
len(config.paramHashFilters) == 0 &&
len(config.params) == 0 &&
len(config.headers) == 0 &&
len(config.methods) == 0 {
return nil
}
@@ -34,16 +30,16 @@ func NewHTTPModifier(config *HTTPModifierConfig) *HTTPModifier {
}
func (m *HTTPModifier) Rewrite(payload []byte) (response []byte) {
if !proto.HasRequestTitle(payload) {
if !proto.IsHTTPPayload(payload) {
return payload
}
if len(m.config.Methods) > 0 {
if len(m.config.methods) > 0 {
method := proto.Method(payload)
matched := false
for _, m := range m.config.Methods {
for _, m := range m.config.methods {
if bytes.Equal(method, m) {
matched = true
break
@@ -55,24 +51,24 @@ func (m *HTTPModifier) Rewrite(payload []byte) (response []byte) {
}
}
if len(m.config.Headers) > 0 {
for _, header := range m.config.Headers {
if len(m.config.headers) > 0 {
for _, header := range m.config.headers {
payload = proto.SetHeader(payload, []byte(header.Name), []byte(header.Value))
}
}
if len(m.config.Params) > 0 {
for _, param := range m.config.Params {
if len(m.config.params) > 0 {
for _, param := range m.config.params {
payload = proto.SetPathParam(payload, param.Name, param.Value)
}
}
if len(m.config.URLRegexp) > 0 {
if len(m.config.urlRegexp) > 0 {
path := proto.Path(payload)
matched := false
for _, f := range m.config.URLRegexp {
for _, f := range m.config.urlRegexp {
if f.regexp.Match(path) {
matched = true
break
@@ -84,32 +80,28 @@ func (m *HTTPModifier) Rewrite(payload []byte) (response []byte) {
}
}
if len(m.config.URLNegativeRegexp) > 0 {
if len(m.config.urlNegativeRegexp) > 0 {
path := proto.Path(payload)
for _, f := range m.config.URLNegativeRegexp {
for _, f := range m.config.urlNegativeRegexp {
if f.regexp.Match(path) {
return
}
}
}
if len(m.config.HeaderFilters) > 0 {
for _, f := range m.config.HeaderFilters {
if len(m.config.headerFilters) > 0 {
for _, f := range m.config.headerFilters {
value := proto.Header(payload, f.name)
if len(value) == 0 {
return
}
if !f.regexp.Match(value) {
if len(value) > 0 && !f.regexp.Match(value) {
return
}
}
}
if len(m.config.HeaderNegativeFilters) > 0 {
for _, f := range m.config.HeaderNegativeFilters {
if len(m.config.headerNegativeFilters) > 0 {
for _, f := range m.config.headerNegativeFilters {
value := proto.Header(payload, f.name)
if len(value) > 0 && f.regexp.Match(value) {
@@ -118,25 +110,8 @@ func (m *HTTPModifier) Rewrite(payload []byte) (response []byte) {
}
}
if len(m.config.HeaderBasicAuthFilters) > 0 {
for _, f := range m.config.HeaderBasicAuthFilters {
value := proto.Header(payload, []byte("Authorization"))
if len(value) > 0 {
valueString := string(value)
trimmedBasicAuthEncoded := strings.TrimPrefix(valueString, "Basic ")
if strings.Compare(valueString, trimmedBasicAuthEncoded) != 0 {
decodedAuth, _ := base64.StdEncoding.DecodeString(trimmedBasicAuthEncoded)
if !f.regexp.Match(decodedAuth) {
return
}
}
}
}
}
if len(m.config.HeaderHashFilters) > 0 {
for _, f := range m.config.HeaderHashFilters {
if len(m.config.headerHashFilters) > 0 {
for _, f := range m.config.headerHashFilters {
value := proto.Header(payload, f.name)
if len(value) > 0 {
@@ -150,8 +125,8 @@ func (m *HTTPModifier) Rewrite(payload []byte) (response []byte) {
}
}
if len(m.config.ParamHashFilters) > 0 {
for _, f := range m.config.ParamHashFilters {
if len(m.config.paramHashFilters) > 0 {
for _, f := range m.config.paramHashFilters {
value, s, _ := proto.PathParam(payload, f.name)
if s != -1 {
@@ -165,10 +140,10 @@ func (m *HTTPModifier) Rewrite(payload []byte) (response []byte) {
}
}
if len(m.config.URLRewrite) > 0 {
if len(m.config.urlRewrite) > 0 {
path := proto.Path(payload)
for _, f := range m.config.URLRewrite {
for _, f := range m.config.urlRewrite {
if f.src.Match(path) {
path = f.src.ReplaceAll(path, f.target)
payload = proto.SetPath(payload, path)
@@ -178,19 +153,5 @@ func (m *HTTPModifier) Rewrite(payload []byte) (response []byte) {
}
}
if len(m.config.HeaderRewrite) > 0 {
for _, f := range m.config.HeaderRewrite {
value := proto.Header(payload, f.header)
if len(value) == 0 {
break
}
if f.src.Match(value) {
newValue := f.src.ReplaceAll(value, f.target)
payload = proto.SetHeader(payload, f.header, newValue)
}
}
}
return payload
}
+21 -87
View File
@@ -10,19 +10,17 @@ import (
// HTTPModifierConfig holds configuration options for built-in traffic modifier
type HTTPModifierConfig struct {
URLNegativeRegexp HTTPURLRegexp `json:"http-disallow-url"`
URLRegexp HTTPURLRegexp `json:"http-allow-url"`
URLRewrite URLRewriteMap `json:"http-rewrite-url"`
HeaderRewrite HeaderRewriteMap `json:"http-rewrite-header"`
HeaderFilters HTTPHeaderFilters `json:"http-allow-header"`
HeaderNegativeFilters HTTPHeaderFilters `json:"http-disallow-header"`
HeaderBasicAuthFilters HTTPHeaderBasicAuthFilters `json:"http-basic-auth-filter"`
HeaderHashFilters HTTPHashFilters `json:"http-header-limiter"`
ParamHashFilters HTTPHashFilters `json:"http-param-limiter"`
urlNegativeRegexp HTTPUrlRegexp
urlRegexp HTTPUrlRegexp
urlRewrite UrlRewriteMap
headerFilters HTTPHeaderFilters
headerNegativeFilters HTTPHeaderFilters
headerHashFilters HTTPHashFilters
paramHashFilters HTTPHashFilters
Params HTTPParams `json:"http-set-param"`
Headers HTTPHeaders `json:"http-set-header"`
Methods HTTPMethods `json:"http-allow-method"`
params HTTPParams
headers HTTPHeaders
methods HTTPMethods
}
//
@@ -45,8 +43,7 @@ func (h *HTTPHeaderFilters) Set(value string) error {
if len(valArr) < 2 {
return errors.New("need both header and value, colon-delimited (ex. user_id:^169$).")
}
val := strings.TrimSpace(valArr[1])
r, err := regexp.Compile(val)
r, err := regexp.Compile(valArr[1])
if err != nil {
return err
}
@@ -56,31 +53,6 @@ func (h *HTTPHeaderFilters) Set(value string) error {
return nil
}
//
// Handling of --http-basic-auth-filter option
//
type basicAuthFilter struct {
regexp *regexp.Regexp
}
// HTTPHeaderFilters holds list of headers and their regexps
type HTTPHeaderBasicAuthFilters []basicAuthFilter
func (h *HTTPHeaderBasicAuthFilters) String() string {
return fmt.Sprint(*h)
}
func (h *HTTPHeaderBasicAuthFilters) Set(value string) error {
r, err := regexp.Compile(value)
if err != nil {
return err
}
*h = append(*h, basicAuthFilter{regexp: r})
return nil
}
//
// Handling of --http-allow-header-hash and --http-allow-param-hash options
//
@@ -103,16 +75,14 @@ func (h *HTTPHashFilters) Set(value string) error {
f := hashFilter{name: []byte(valArr[0])}
val := strings.TrimSpace(valArr[1])
if strings.Contains(val, "%") {
p, _ := strconv.ParseInt(val[:len(val)-1], 0, 0)
if strings.Contains(valArr[1], "%") {
p, _ := strconv.ParseInt(valArr[1][:len(valArr[1])-1], 0, 0)
f.percent = uint32(p)
} else if strings.Contains(val, "/") {
} else if strings.Contains(valArr[1], "/") {
// DEPRECATED format
var num, den uint64
fracArr := strings.Split(val, "/")
fracArr := strings.Split(valArr[1], "/")
num, _ = strconv.ParseUint(fracArr[0], 10, 64)
den, _ = strconv.ParseUint(fracArr[1], 10, 64)
@@ -204,13 +174,13 @@ type urlRewrite struct {
target []byte
}
type URLRewriteMap []urlRewrite
type UrlRewriteMap []urlRewrite
func (r *URLRewriteMap) String() string {
func (r *UrlRewriteMap) String() string {
return fmt.Sprint(*r)
}
func (r *URLRewriteMap) Set(value string) error {
func (r *UrlRewriteMap) Set(value string) error {
valArr := strings.SplitN(value, ":", 2)
if len(valArr) < 2 {
return errors.New("need both src and target, colon-delimited (ex. /a:/b)")
@@ -223,42 +193,6 @@ func (r *URLRewriteMap) Set(value string) error {
return nil
}
//
// Handling of --http-rewrite-header option
//
type headerRewrite struct {
header []byte
src *regexp.Regexp
target []byte
}
type HeaderRewriteMap []headerRewrite
func (r *HeaderRewriteMap) String() string {
return fmt.Sprint(*r)
}
func (r *HeaderRewriteMap) Set(value string) error {
headerArr := strings.SplitN(value, ":", 2)
if len(headerArr) < 2 {
return errors.New("need both header, regexp and rewrite target, colon-delimited (ex. Header: regexp,target)")
}
header := headerArr[0]
valArr := strings.SplitN(strings.TrimSpace(headerArr[1]), ",", 2)
if len(valArr) < 2 {
return errors.New("need both header, regexp and rewrite target, colon-delimited (ex. Header: regexp,target)")
}
regexp, err := regexp.Compile(valArr[0])
if err != nil {
return err
}
*r = append(*r, headerRewrite{header: []byte(header), src: regexp, target: []byte(valArr[1])})
return nil
}
//
// Handling of --http-allow-url option
//
@@ -266,13 +200,13 @@ type urlRegexp struct {
regexp *regexp.Regexp
}
type HTTPURLRegexp []urlRegexp
type HTTPUrlRegexp []urlRegexp
func (r *HTTPURLRegexp) String() string {
func (r *HTTPUrlRegexp) String() string {
return fmt.Sprint(*r)
}
func (r *HTTPURLRegexp) Set(value string) error {
func (r *HTTPUrlRegexp) Set(value string) error {
regexp, err := regexp.Compile(value)
*r = append(*r, urlRegexp{regexp: regexp})
+1 -1
View File
@@ -53,7 +53,7 @@ func TestHTTPHashFilters(t *testing.T) {
func TestUrlRewriteMap(t *testing.T) {
var err error
rewrites := URLRewriteMap{}
rewrites := UrlRewriteMap{}
if err = rewrites.Set("/v1/user/([^\\/]+)/ping:/v2/user/$1/ping"); err != nil {
t.Error("Should set mapping", err)
+16 -89
View File
@@ -2,9 +2,8 @@ package main
import (
"bytes"
"github.com/buger/gor/proto"
"testing"
"github.com/buger/goreplay/proto"
)
func TestHTTPModifierWithoutConfig(t *testing.T) {
@@ -18,7 +17,7 @@ func TestHTTPModifierHeaderFilters(t *testing.T) {
filters.Set("Host:^www.w3.org$")
modifier := NewHTTPModifier(&HTTPModifierConfig{
HeaderFilters: filters,
headerFilters: filters,
})
payload := []byte("POST /post HTTP/1.1\r\nContent-Length: 7\r\nHost: www.w3.org\r\n\r\na=1&b=2")
@@ -32,7 +31,7 @@ func TestHTTPModifierHeaderFilters(t *testing.T) {
filters.Set("Host:^www.w4.org$")
modifier = NewHTTPModifier(&HTTPModifierConfig{
HeaderFilters: filters,
headerFilters: filters,
})
if len(modifier.Rewrite(payload)) != 0 {
@@ -45,7 +44,7 @@ func TestHTTPModifierHeaderNegativeFilters(t *testing.T) {
filters.Set("Host:^www.w3.org$")
modifier := NewHTTPModifier(&HTTPModifierConfig{
HeaderNegativeFilters: filters,
headerNegativeFilters: filters,
})
payload := []byte("POST /post HTTP/1.1\r\nContent-Length: 7\r\nHost: www.w4.org\r\n\r\na=1&b=2")
@@ -59,69 +58,18 @@ func TestHTTPModifierHeaderNegativeFilters(t *testing.T) {
filters.Set("Host:^www.w4.org$")
modifier = NewHTTPModifier(&HTTPModifierConfig{
HeaderNegativeFilters: filters,
headerNegativeFilters: filters,
})
if len(modifier.Rewrite(payload)) != 0 {
t.Error("Request should not pass filters")
}
filters = HTTPHeaderFilters{}
// Setting filter that not match our header
filters.Set("Host: www*")
modifier = NewHTTPModifier(&HTTPModifierConfig{
HeaderNegativeFilters: filters,
})
if len(modifier.Rewrite(payload)) != 0 {
t.Error("Request should not pass filters")
}
}
func TestHTTPHeaderBasicAuthFilters(t *testing.T) {
filters := HTTPHeaderBasicAuthFilters{}
filters.Set("^customer[0-9].*")
modifier := NewHTTPModifier(&HTTPModifierConfig{
HeaderBasicAuthFilters: filters,
})
//Encoded UserId:Password = customer3:welcome
payload := []byte("POST /post HTTP/1.1\r\nContent-Length: 7\r\nAuthorization: Basic Y3VzdG9tZXIzOndlbGNvbWU=\r\n\r\na=1&b=2")
if len(modifier.Rewrite(payload)) == 0 {
t.Error("Request should pass filters")
}
//customer6:rest@123^TEST
payload = []byte("POST /post HTTP/1.1\r\nContent-Length: 88\r\nAuthorization: Basic Y3VzdG9tZXI2OnJlc3RAMTIzXlRFU1Q==\r\n\r\na=1&b=2")
if len(modifier.Rewrite(payload)) == 0 {
t.Error("Request should pass filters")
}
filters = HTTPHeaderBasicAuthFilters{}
// Setting filter that not match our header
filters.Set("^(homer simpson|mickey mouse).*")
modifier = NewHTTPModifier(&HTTPModifierConfig{
HeaderBasicAuthFilters: filters,
})
if len(modifier.Rewrite(payload)) != 0 {
t.Error("Request should not pass filters")
}
//mickey mouse:happy123
payload = []byte("POST /post HTTP/1.1\r\nContent-Length: 88\r\nAuthorization: Basic bWlja2V5IG1vdXNlOmhhcHB5MTIz\r\n\r\na=1&b=2")
if len(modifier.Rewrite(payload)) == 0 {
t.Error("Request should pass filters")
}
}
func TestHTTPModifierURLRewrite(t *testing.T) {
var url, newURL []byte
rewrites := URLRewriteMap{}
rewrites := UrlRewriteMap{}
payload := func(url []byte) []byte {
return []byte("POST " + string(url) + " HTTP/1.1\r\nContent-Length: 7\r\nHost: www.w3.org\r\n\r\na=1&b=2")
@@ -133,7 +81,7 @@ func TestHTTPModifierURLRewrite(t *testing.T) {
}
modifier := NewHTTPModifier(&HTTPModifierConfig{
URLRewrite: rewrites,
urlRewrite: rewrites,
})
url = []byte("/v1/user/joe/ping")
@@ -147,33 +95,12 @@ func TestHTTPModifierURLRewrite(t *testing.T) {
}
}
func TestHTTPModifierHeaderRewrite(t *testing.T) {
var header, newHeader []byte
rewrites := HeaderRewriteMap{}
payload := []byte("GET / HTTP/1.1\r\nContent-Length: 7\r\nHost: www.w3.org\r\n\r\na=1&b=2")
err := rewrites.Set("Host: (.*).w3.org,$1.beta.w3.org")
if err != nil {
t.Error("Should not error", err)
}
modifier := NewHTTPModifier(&HTTPModifierConfig{
HeaderRewrite: rewrites,
})
header = []byte("www.beta.w3.org")
if newHeader = proto.Header(modifier.Rewrite(payload), []byte("Host")); !bytes.Equal(newHeader, header) {
t.Error("Request header should have been rewritten, wasn't", string(newHeader), string(header))
}
}
func TestHTTPModifierHeaderHashFilters(t *testing.T) {
filters := HTTPHashFilters{}
filters.Set("Header2:1/2")
modifier := NewHTTPModifier(&HTTPModifierConfig{
HeaderHashFilters: filters,
headerHashFilters: filters,
})
payload := func(header []byte) []byte {
@@ -198,7 +125,7 @@ func TestHTTPModifierParamHashFilters(t *testing.T) {
filters.Set("user_id:1/2")
modifier := NewHTTPModifier(&HTTPModifierConfig{
ParamHashFilters: filters,
paramHashFilters: filters,
})
payload := func(value []byte) []byte {
@@ -224,7 +151,7 @@ func TestHTTPModifierHeaders(t *testing.T) {
headers.Set("Host:localhost")
modifier := NewHTTPModifier(&HTTPModifierConfig{
Headers: headers,
headers: headers,
})
payload := []byte("POST /post HTTP/1.1\r\nContent-Length: 7\r\nHost: www.w3.org\r\n\r\na=1&b=2")
@@ -236,12 +163,12 @@ func TestHTTPModifierHeaders(t *testing.T) {
}
func TestHTTPModifierURLRegexp(t *testing.T) {
filters := HTTPURLRegexp{}
filters := HTTPUrlRegexp{}
filters.Set("/v1/app")
filters.Set("/v1/api")
modifier := NewHTTPModifier(&HTTPModifierConfig{
URLRegexp: filters,
urlRegexp: filters,
})
payload := func(url string) []byte {
@@ -262,12 +189,12 @@ func TestHTTPModifierURLRegexp(t *testing.T) {
}
func TestHTTPModifierURLNegativeRegexp(t *testing.T) {
filters := HTTPURLRegexp{}
filters := HTTPUrlRegexp{}
filters.Set("/restricted1")
filters.Set("/some/restricted2")
modifier := NewHTTPModifier(&HTTPModifierConfig{
URLNegativeRegexp: filters,
urlNegativeRegexp: filters,
})
payload := func(url string) []byte {
@@ -292,7 +219,7 @@ func TestHTTPModifierSetHeader(t *testing.T) {
filters.Set("User-Agent:Gor")
modifier := NewHTTPModifier(&HTTPModifierConfig{
Headers: filters,
headers: filters,
})
payload := []byte("POST /post HTTP/1.1\r\nContent-Length: 7\r\nHost: www.w3.org\r\n\r\na=1&b=2")
@@ -308,7 +235,7 @@ func TestHTTPModifierSetParam(t *testing.T) {
filters.Set("api_key=1")
modifier := NewHTTPModifier(&HTTPModifierConfig{
Params: filters,
params: filters,
})
payload := []byte("POST /post?api_key=1234 HTTP/1.1\r\nContent-Length: 7\r\nHost: www.w3.org\r\n\r\na=1&b=2")
-73
View File
@@ -1,73 +0,0 @@
package main
import (
"bytes"
"compress/gzip"
"io/ioutil"
"net/http/httputil"
"strconv"
"github.com/buger/goreplay/proto"
)
func prettifyHTTP(p []byte) []byte {
headSize := bytes.IndexByte(p, '\n') + 1
head := p[:headSize]
body := p[headSize:]
headersPos := proto.MIMEHeadersEndPos(body)
if headersPos < 5 || headersPos > len(body) {
return p
}
headers := body[:headersPos]
content := body[headersPos:]
var tEnc, cEnc []byte
proto.ParseHeaders([][]byte{headers}, func(header, value []byte) {
if bytes.EqualFold(header, []byte("Transfer-Encoding")) {
tEnc = value
}
if bytes.EqualFold(header, []byte("Content-Encoding")) {
cEnc = value
}
})
if len(tEnc) == 0 && len(cEnc) == 0 {
return p
}
if bytes.Equal(tEnc, []byte("chunked")) {
buf := bytes.NewBuffer(content)
r := httputil.NewChunkedReader(buf)
content, _ = ioutil.ReadAll(r)
headers = proto.DeleteHeader(headers, []byte("Transfer-Encoding"))
newLen := strconv.Itoa(len(content))
headers = proto.SetHeader(headers, []byte("Content-Length"), []byte(newLen))
}
if bytes.Equal(cEnc, []byte("gzip")) {
buf := bytes.NewBuffer(content)
g, err := gzip.NewReader(buf)
if err != nil {
Debug(1, "[Prettifier] GZIP encoding error:", err)
return []byte{}
}
content, _ = ioutil.ReadAll(g)
headers = proto.DeleteHeader(headers, []byte("Content-Encoding"))
newLen := strconv.Itoa(len(content))
headers = proto.SetHeader(headers, []byte("Content-Length"), []byte(newLen))
}
newPayload := append(append(head, headers...), content...)
return newPayload
}
-36
View File
@@ -1,36 +0,0 @@
package main
import (
"bytes"
"compress/gzip"
"strconv"
"testing"
)
func TestHTTPPrettifierGzip(t *testing.T) {
b := bytes.NewBufferString("")
w := gzip.NewWriter(b)
w.Write([]byte("test"))
w.Close()
size := strconv.Itoa(len(b.Bytes()))
payload := []byte("2 1 1\nHTTP/1.1 200 OK\r\nContent-Length: " + size + "\r\nContent-Encoding: gzip\r\n\r\n")
payload = append(payload, b.Bytes()...)
newPayload := prettifyHTTP(payload)
if string(newPayload) != "2 1 1\nHTTP/1.1 200 OK\r\nContent-Length: 4\r\n\r\ntest" {
t.Error("Payload not match:", string(newPayload))
}
}
func TestHTTPPrettifierChunked(t *testing.T) {
payload := []byte("POST / HTTP/1.1\r\nHost: www.w3.org\r\nTransfer-Encoding: chunked\r\n\r\n4\r\nWiki\r\n5\r\npedia\r\ne\r\n in\r\n\r\nchunks.\r\n0\r\n\r\n")
newPayload := prettifyHTTP(payload)
if string(newPayload) != "POST / HTTP/1.1\r\nHost: www.w3.org\r\nContent-Length: 23\r\n\r\nWikipedia in\r\n\r\nchunks." {
t.Error("Payload not match:", string(newPayload))
}
}
+3 -3
View File
@@ -34,10 +34,10 @@ func (i *DummyInput) emit() {
select {
case <-ticker.C:
uuid := uuid()
reqh := payloadHeader(RequestPayload, uuid, time.Now().UnixNano(), -1)
i.data <- append(reqh, []byte("GET / HTTP/1.1\r\nHost: www.w3.org\r\nUser-Agent: Go 1.1 package http\r\nAccept-Encoding: gzip\r\n\r\n")...)
reqh := payloadHeader(RequestPayload, uuid, time.Now().UnixNano())
i.data <- append(reqh, []byte("GET /HTTP/1.1\r\nHost: www.w3.org\r\nUser-Agent: Go 1.1 package http\r\nAccept-Encoding: gzip\r\n\r\n")...)
resh := payloadHeader(ResponsePayload, uuid, time.Now().UnixNano()+1, 1)
resh := payloadHeader(ResponsePayload, uuid, 1)
i.data <- append(resh, []byte("HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")...)
}
}
+49 -216
View File
@@ -3,272 +3,105 @@ package main
import (
"bufio"
"bytes"
"compress/gzip"
"errors"
"io"
"log"
"os"
"path/filepath"
"strconv"
"strings"
"sync"
"sync/atomic"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
)
type fileInputReader struct {
reader *bufio.Reader
data []byte
file io.ReadCloser
timestamp int64
closed int32 // Value of 0 indicates that the file is still open.
s3 bool
}
func (f *fileInputReader) parseNext() error {
payloadSeparatorAsBytes := []byte(payloadSeparator)
var buffer bytes.Buffer
for {
line, err := f.reader.ReadBytes('\n')
if err != nil {
if err != io.EOF {
Debug(1, err)
} else {
f.Close()
}
return err
}
if bytes.Equal(payloadSeparatorAsBytes[1:], line) {
asBytes := buffer.Bytes()
meta := payloadMeta(asBytes)
f.timestamp, _ = strconv.ParseInt(string(meta[2]), 10, 64)
f.data = asBytes[:len(asBytes)-1]
return nil
}
buffer.Write(line)
}
}
func (f *fileInputReader) ReadPayload() []byte {
defer f.parseNext()
return f.data
}
func (f *fileInputReader) Close() error {
if atomic.LoadInt32(&f.closed) == 0 {
atomic.StoreInt32(&f.closed, 1)
f.file.Close()
}
return nil
}
func NewFileInputReader(path string) *fileInputReader {
var file io.ReadCloser
var err error
if strings.HasPrefix(path, "s3://") {
file = NewS3ReadCloser(path)
} else {
file, err = os.Open(path)
}
if err != nil {
log.Println(err)
return nil
}
r := &fileInputReader{file: file, closed: 0}
if strings.HasSuffix(path, ".gz") {
gzReader, err := gzip.NewReader(file)
if err != nil {
log.Println(err)
return nil
}
r.reader = bufio.NewReader(gzReader)
} else {
r.reader = bufio.NewReader(file)
}
r.parseNext()
return r
}
// FileInput can read requests generated by FileOutput
type FileInput struct {
mu sync.Mutex
data chan []byte
exit chan bool
path string
readers []*fileInputReader
file *os.File
speedFactor float64
loop bool
}
// NewFileInput constructor for FileInput. Accepts file path as argument.
func NewFileInput(path string, loop bool) (i *FileInput) {
func NewFileInput(path string) (i *FileInput) {
i = new(FileInput)
i.data = make(chan []byte, 1000)
i.exit = make(chan bool)
i.data = make(chan []byte)
i.path = path
i.speedFactor = 1
i.loop = loop
if err := i.init(); err != nil {
return
}
i.init(path)
go i.emit()
return
}
func (i *FileInput) init() (err error) {
defer i.mu.Unlock()
i.mu.Lock()
func (i *FileInput) init(path string) {
file, err := os.Open(path)
var matches []string
if strings.HasPrefix(i.path, "s3://") {
sess := session.Must(session.NewSession(awsConfig()))
svc := s3.New(sess)
bucket, key := parseS3Url(i.path)
params := &s3.ListObjectsInput{
Bucket: aws.String(bucket),
Prefix: aws.String(key),
}
resp, err := svc.ListObjects(params)
if err != nil {
log.Println("Error while retreiving list of files from S3", i.path, err)
return err
}
for _, c := range resp.Contents {
matches = append(matches, "s3://"+bucket+"/"+(*c.Key))
}
} else {
if matches, err = filepath.Glob(i.path); err != nil {
log.Println("Wrong file pattern", i.path, err)
return
}
if err != nil {
log.Fatal(i, "Cannot open file %q. Error: %s", path, err)
}
if len(matches) == 0 {
log.Println("No files match pattern: ", i.path)
return errors.New("No matching files")
}
i.readers = make([]*fileInputReader, len(matches))
for idx, p := range matches {
i.readers[idx] = NewFileInputReader(p)
}
return nil
i.file = file
}
func (i *FileInput) Read(data []byte) (int, error) {
var buf []byte
select {
case <-i.exit:
return 0, ErrorStopped
case buf = <-i.data:
}
n := copy(data, buf)
return n, nil
buf := <-i.data
copy(data, buf)
return len(buf), nil
}
func (i *FileInput) String() string {
return "File input: " + i.path
}
// Find reader with smallest timestamp e.g next payload in row
func (i *FileInput) nextReader() (next *fileInputReader) {
for _, r := range i.readers {
if r == nil || atomic.LoadInt32(&r.closed) != 0 {
continue
}
if next == nil || r.timestamp < next.timestamp {
next = r
continue
}
}
return
}
func (i *FileInput) emit() {
var lastTime int64 = -1
var lastTime int64
payloadSeparatorAsBytes := []byte(payloadSeparator)
reader := bufio.NewReader(i.file)
var buffer bytes.Buffer
for {
select {
case <-i.exit:
return
default:
line, err := reader.ReadBytes('\n')
if err != nil {
if err != io.EOF {
log.Fatal(err)
}
break
}
reader := i.nextReader()
if bytes.Equal(payloadSeparatorAsBytes[1:], line) {
asBytes := buffer.Bytes()[:buffer.Len()-1]
buffer.Reset()
if reader == nil {
if i.loop {
i.init()
lastTime = -1
continue
} else {
break
}
}
meta := payloadMeta(asBytes)
if lastTime != -1 {
diff := reader.timestamp - lastTime
lastTime = reader.timestamp
if len(meta) > 2 && meta[0][0] == RequestPayload {
ts, _ := strconv.ParseInt(string(meta[2]), 10, 64)
if i.speedFactor != 1 {
diff = int64(float64(diff) / i.speedFactor)
if lastTime != 0 {
timeDiff := ts - lastTime
if i.speedFactor != 1 {
timeDiff = int64(float64(timeDiff) / i.speedFactor)
}
time.Sleep(time.Duration(timeDiff))
}
lastTime = ts
}
time.Sleep(time.Duration(diff))
// Bytes() returns only pointer, so to remove data-race copy the data to an array
newBuf := make([]byte, len(asBytes))
copy(newBuf, asBytes)
i.data <- newBuf
} else {
lastTime = reader.timestamp
buffer.Write(line)
}
// Recheck if we have exited since last check.
select {
case <-i.exit:
return
default:
i.data <- reader.ReadPayload()
}
}
log.Printf("FileInput: end of file '%s'\n", i.path)
}
// Close closes this plugin
func (i *FileInput) Close() error {
defer i.mu.Unlock()
i.mu.Lock()
close(i.exit)
for _, r := range i.readers {
r.Close()
}
return nil
}
+21 -186
View File
@@ -3,20 +3,17 @@ package main
import (
"bytes"
"errors"
"fmt"
"io"
"io/ioutil"
"log"
"math/rand"
"os"
"sync"
"syscall"
"testing"
"time"
)
var _ = log.Println
func TestInputFileWithGET(t *testing.T) {
input := NewTestInput()
rg := NewRequestGenerator([]io.Reader{input}, func() { input.EmitGET() }, 1)
readPayloads := [][]byte{}
@@ -38,6 +35,7 @@ func TestInputFileWithGET(t *testing.T) {
t.Error("Request read back from file should match")
}
}
}
func TestInputFileWithPayloadLargerThan64Kb(t *testing.T) {
@@ -95,164 +93,6 @@ func TestInputFileWithGETAndPOST(t *testing.T) {
}
func TestInputFileMultipleFilesWithRequestsOnly(t *testing.T) {
rnd := rand.Int63()
file1, _ := os.OpenFile(fmt.Sprintf("/tmp/%d_0", rnd), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0660)
file1.Write([]byte("1 1 1\ntest1"))
file1.Write([]byte(payloadSeparator))
file1.Write([]byte("1 1 3\ntest2"))
file1.Write([]byte(payloadSeparator))
file1.Close()
file2, _ := os.OpenFile(fmt.Sprintf("/tmp/%d_1", rnd), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0660)
file2.Write([]byte("1 1 2\ntest3"))
file2.Write([]byte(payloadSeparator))
file2.Write([]byte("1 1 4\ntest4"))
file2.Write([]byte(payloadSeparator))
file2.Close()
input := NewFileInput(fmt.Sprintf("/tmp/%d*", rnd), false)
buf := make([]byte, 1000)
for i := '1'; i <= '4'; i++ {
n, _ := input.Read(buf)
if buf[4] != byte(i) {
t.Error("Should emit requests in right order", string(buf[:n]))
}
}
os.Remove(file1.Name())
os.Remove(file2.Name())
}
func TestInputFileRequestsWithLatency(t *testing.T) {
rnd := rand.Int63()
file, _ := os.OpenFile(fmt.Sprintf("/tmp/%d", rnd), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0660)
defer file.Close()
file.Write([]byte("1 1 100000000\nrequest1"))
file.Write([]byte(payloadSeparator))
file.Write([]byte("1 2 150000000\nrequest2"))
file.Write([]byte(payloadSeparator))
file.Write([]byte("1 3 250000000\nrequest3"))
file.Write([]byte(payloadSeparator))
input := NewFileInput(fmt.Sprintf("/tmp/%d", rnd), false)
buf := make([]byte, 1000)
start := time.Now().UnixNano()
for i := 0; i < 3; i++ {
input.Read(buf)
}
end := time.Now().UnixNano()
var expectedLatency int64 = 250000000 - 100000000
realLatency := end - start
if realLatency < expectedLatency {
t.Errorf("Should emit requests respecting latency. Expected: %v, real: %v", expectedLatency, realLatency)
}
if realLatency > expectedLatency+10000000 {
t.Errorf("Should emit requests respecting latency. Expected: %v, real: %v", expectedLatency, realLatency)
}
}
func TestInputFileMultipleFilesWithRequestsAndResponses(t *testing.T) {
rnd := rand.Int63()
file1, _ := os.OpenFile(fmt.Sprintf("/tmp/%d_0", rnd), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0660)
file1.Write([]byte("1 1 1\nrequest1"))
file1.Write([]byte(payloadSeparator))
file1.Write([]byte("2 1 1\nresponse1"))
file1.Write([]byte(payloadSeparator))
file1.Write([]byte("1 2 3\nrequest2"))
file1.Write([]byte(payloadSeparator))
file1.Write([]byte("2 2 3\nresponse2"))
file1.Write([]byte(payloadSeparator))
file1.Close()
file2, _ := os.OpenFile(fmt.Sprintf("/tmp/%d_1", rnd), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0660)
file2.Write([]byte("1 3 2\nrequest3"))
file2.Write([]byte(payloadSeparator))
file2.Write([]byte("2 3 2\nresponse3"))
file2.Write([]byte(payloadSeparator))
file2.Write([]byte("1 4 4\nrequest4"))
file2.Write([]byte(payloadSeparator))
file2.Write([]byte("2 4 4\nresponse4"))
file2.Write([]byte(payloadSeparator))
file2.Close()
input := NewFileInput(fmt.Sprintf("/tmp/%d*", rnd), false)
buf := make([]byte, 1000)
for i := '1'; i <= '4'; i++ {
n, _ := input.Read(buf)
if buf[0] != '1' && buf[4] != byte(i) {
t.Error("Shound emit requests in right order", string(buf[:n]))
}
n, _ = input.Read(buf)
if buf[0] != '2' && buf[4] != byte(i) {
t.Error("Shound emit responses in right order", string(buf[:n]))
}
}
os.Remove(file1.Name())
os.Remove(file2.Name())
}
func TestInputFileLoop(t *testing.T) {
rnd := rand.Int63()
file, _ := os.OpenFile(fmt.Sprintf("/tmp/%d", rnd), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0660)
file.Write([]byte("1 1 1\ntest1"))
file.Write([]byte(payloadSeparator))
file.Write([]byte("1 1 2\ntest2"))
file.Write([]byte(payloadSeparator))
file.Close()
input := NewFileInput(fmt.Sprintf("/tmp/%d", rnd), true)
buf := make([]byte, 1000)
// Even if we have just 2 requests in file, it should indifinitly loop
for i := 0; i < 1000; i++ {
input.Read(buf)
}
input.Close()
os.Remove(file.Name())
}
func TestInputFileCompressed(t *testing.T) {
rnd := rand.Int63()
output := NewFileOutput(fmt.Sprintf("/tmp/%d_0.gz", rnd), &FileOutputConfig{FlushInterval: time.Minute, Append: true})
for i := 0; i < 1000; i++ {
output.Write([]byte("1 1 1\r\ntest"))
}
name1 := output.file.Name()
output.Close()
output2 := NewFileOutput(fmt.Sprintf("/tmp/%d_1.gz", rnd), &FileOutputConfig{FlushInterval: time.Minute, Append: true})
for i := 0; i < 1000; i++ {
output2.Write([]byte("1 1 1\r\ntest"))
}
name2 := output2.file.Name()
output2.Close()
input := NewFileInput(fmt.Sprintf("/tmp/%d*", rnd), false)
buf := make([]byte, 1000)
for i := 0; i < 2000; i++ {
input.Read(buf)
}
os.Remove(name1)
os.Remove(name2)
}
type CaptureFile struct {
data [][]byte
file *os.File
@@ -267,7 +107,7 @@ func NewExpectedCaptureFile(data [][]byte, file *os.File) *CaptureFile {
func (expectedCaptureFile *CaptureFile) TearDown() {
if expectedCaptureFile.file != nil {
os.Remove(expectedCaptureFile.file.Name())
syscall.Unlink(expectedCaptureFile.file.Name())
}
}
@@ -293,9 +133,11 @@ func (expectedCaptureFile *CaptureFile) PayloadsEqual(other [][]byte) bool {
}
for i, payload := range other {
if !bytes.Equal(expectedCaptureFile.data[i], payload) {
return false
}
}
return true
@@ -303,6 +145,7 @@ func (expectedCaptureFile *CaptureFile) PayloadsEqual(other [][]byte) bool {
}
func CreateCaptureFile(requestGenerator *RequestGenerator) *CaptureFile {
f, err := ioutil.TempFile("", "testmainconf")
if err != nil {
panic(err)
@@ -312,53 +155,44 @@ func CreateCaptureFile(requestGenerator *RequestGenerator) *CaptureFile {
readPayloads := [][]byte{}
output := NewTestOutput(func(data []byte) {
readPayloads = append(readPayloads, Duplicate(data))
requestGenerator.wg.Done()
})
outputFile := NewFileOutput(f.Name(), &FileOutputConfig{FlushInterval: time.Minute, Append: true})
outputFile := NewFileOutput(f.Name())
plugins := &InOutPlugins{
Inputs: requestGenerator.inputs,
Outputs: []io.Writer{output, outputFile},
}
for _, input := range requestGenerator.inputs {
plugins.All = append(plugins.All, input)
}
plugins.All = append(plugins.All, output, outputFile)
Plugins.Inputs = requestGenerator.inputs
Plugins.Outputs = []io.Writer{output, outputFile}
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
requestGenerator.emit()
requestGenerator.wg.Wait()
time.Sleep(100 * time.Millisecond)
emitter.Close()
close(quit)
return NewExpectedCaptureFile(readPayloads, f)
}
func ReadFromCaptureFile(captureFile *os.File, count int, callback writeCallback) (err error) {
quit := make(chan int)
wg := new(sync.WaitGroup)
input := NewFileInput(captureFile.Name(), false)
input := NewFileInput(captureFile.Name())
output := NewTestOutput(func(data []byte) {
callback(data)
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
wg.Add(count)
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
done := make(chan int, 1)
go func() {
@@ -372,7 +206,8 @@ func ReadFromCaptureFile(captureFile *os.File, count int, callback writeCallback
case <-time.After(2 * time.Second):
err = errors.New("Timed out")
}
emitter.Close()
close(quit)
return
}
+17 -30
View File
@@ -13,14 +13,13 @@ type HTTPInput struct {
data chan []byte
address string
listener net.Listener
stop chan bool // Channel used only to indicate goroutine should shutdown
}
// NewHTTPInput constructor for HTTPInput. Accepts address with port which it will listen on.
// NewHTTPInput constructor for HTTPInput. Accepts address with port which he will listen on.
func NewHTTPInput(address string) (i *HTTPInput) {
i = new(HTTPInput)
i.data = make(chan []byte, 1000)
i.stop = make(chan bool)
i.data = make(chan []byte, 10000)
i.address = address
i.listen(address)
@@ -28,39 +27,28 @@ func NewHTTPInput(address string) (i *HTTPInput) {
}
func (i *HTTPInput) Read(data []byte) (int, error) {
var buf []byte
select {
case <-i.stop:
return 0, ErrorStopped
case buf = <-i.data:
}
header := payloadHeader(RequestPayload, uuid(), time.Now().UnixNano(), -1)
buf := <-i.data
n := copy(data, header)
if len(data) > len(header) {
n += copy(data[len(header):], buf)
}
dis := len(header) + len(buf) - n
if dis > 0 {
Debug(2, "[INPUT-HTTP] discarded", dis, "increase copy buffer size")
}
header := payloadHeader(RequestPayload, uuid(), time.Now().UnixNano())
return n, nil
}
copy(data[0:len(header)], header)
copy(data[len(header):], buf)
// Close closes this plugin
func (i *HTTPInput) Close() error {
close(i.stop)
return nil
return len(buf) + len(header), nil
}
func (i *HTTPInput) handler(w http.ResponseWriter, r *http.Request) {
r.URL.Scheme = "http"
r.URL.Host = i.address
r.URL.Host = i.listener.Addr().String()
buf, _ := httputil.DumpRequestOut(r, true)
http.Error(w, http.StatusText(200), 200)
i.data <- buf
select {
case i.data <- buf:
default:
Debug("[INPUT-HTTP] Dropping requests because output can't process them fast enough")
}
}
func (i *HTTPInput) listen(address string) {
@@ -74,12 +62,11 @@ func (i *HTTPInput) listen(address string) {
if err != nil {
log.Fatal("HTTP input listener failure:", err)
}
i.address = i.listener.Addr().String()
go func() {
err = http.Serve(i.listener, mux)
if err != nil && err != http.ErrServerClosed {
log.Fatal("HTTP input serve failure ", err)
if err != nil {
log.Fatal("HTTP input serve failure:", err)
}
}()
}
+28 -41
View File
@@ -1,15 +1,14 @@
package main
import (
"bytes"
"github.com/buger/gor/proto"
"io"
"log"
"net/http"
"os/exec"
"strings"
"sync"
"testing"
"time"
"github.com/buger/goreplay/proto"
)
func TestHTTPInput(t *testing.T) {
@@ -17,21 +16,16 @@ func TestHTTPInput(t *testing.T) {
quit := make(chan int)
input := NewHTTPInput("127.0.0.1:0")
time.Sleep(time.Millisecond)
output := NewTestOutput(func(data []byte) {
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
address := strings.Replace(input.address, "[::]", "127.0.0.1", -1)
address := strings.Replace(input.listener.Addr().String(), "[::]", "127.0.0.1", -1)
for i := 0; i < 100; i++ {
wg.Add(1)
@@ -39,48 +33,41 @@ func TestHTTPInput(t *testing.T) {
}
wg.Wait()
emitter.Close()
close(quit)
}
func TestInputHTTPLargePayload(t *testing.T) {
wg := new(sync.WaitGroup)
quit := make(chan int, 1)
const n = 10 << 20 // 10MB
var large [n]byte
large[n-1] = '0'
quit := make(chan int)
// Generate 1000kb file
dd := exec.Command("dd", "if=/dev/urandom", "of=/tmp/large", "bs=1MB", "count=4")
err := dd.Run()
if err != nil {
log.Fatal("dd error:", err)
}
input := NewHTTPInput("127.0.0.1:0")
time.Sleep(time.Millisecond)
output := NewTestOutput(func(data []byte) {
_len := len(proto.Body(payloadBody(data)))
if _len >= n { // considering http body CRLF
t.Errorf("expected body to be >= %d", n)
if len(proto.Body(payloadBody(data))) != 4000000 {
t.Error("Should receive full file")
}
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
emitter := NewEmitter(quit)
defer emitter.Close()
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
address := strings.Replace(input.address, "[::]", "127.0.0.1", -1)
var req *http.Request
var err error
req, err = http.NewRequest("POST", "http://"+address, bytes.NewBuffer(large[:]))
if err != nil {
t.Error(err)
return
}
wg.Add(1)
_, err = http.DefaultClient.Do(req)
address := strings.Replace(input.listener.Addr().String(), "[::]", "127.0.0.1", -1)
curl := exec.Command("curl", "http://"+address, "--data-binary", "@/tmp/large")
err = curl.Run()
if err != nil {
t.Error(err)
return
log.Fatal("curl error:", err)
}
wg.Wait()
close(quit)
}
-108
View File
@@ -1,108 +0,0 @@
package main
import (
"encoding/json"
"log"
"strings"
"github.com/Shopify/sarama"
"github.com/Shopify/sarama/mocks"
)
// KafkaInput is used for recieving Kafka messages and
// transforming them into HTTP payloads.
type KafkaInput struct {
config *InputKafkaConfig
consumers []sarama.PartitionConsumer
messages chan *sarama.ConsumerMessage
}
// NewKafkaInput creates instance of kafka consumer client.
func NewKafkaInput(address string, config *InputKafkaConfig) *KafkaInput {
return NewKafkaInputWithTLS(address, config, nil)
}
// NewKafkaInputWithTLS creates instance of kafka consumer client with TLS
func NewKafkaInputWithTLS(address string, config *InputKafkaConfig, tlsConfig *KafkaTLSConfig) *KafkaInput {
c := NewKafkaConfig(tlsConfig)
var con sarama.Consumer
if mock, ok := config.consumer.(*mocks.Consumer); ok && mock != nil {
con = config.consumer
} else {
var err error
//con, err = sarama.NewConsumer([]string{config.Host}, c)
con, err = sarama.NewConsumer(strings.Split(config.Host, ","), c)
if err != nil {
log.Fatalln("Failed to start Sarama(Kafka) consumer:", err)
}
}
partitions, err := con.Partitions(config.Topic)
if err != nil {
log.Fatalln("Failed to collect Sarama(Kafka) partitions:", err)
}
i := &KafkaInput{
config: config,
consumers: make([]sarama.PartitionConsumer, len(partitions)),
messages: make(chan *sarama.ConsumerMessage, 256),
}
for index, partition := range partitions {
consumer, err := con.ConsumePartition(config.Topic, partition, sarama.OffsetNewest)
if err != nil {
log.Fatalln("Failed to start Sarama(Kafka) partition consumer:", err)
}
go func(consumer sarama.PartitionConsumer) {
defer consumer.Close()
for message := range consumer.Messages() {
i.messages <- message
}
}(consumer)
go i.ErrorHandler(consumer)
i.consumers[index] = consumer
}
return i
}
// ErrorHandler should receive errors
func (i *KafkaInput) ErrorHandler(consumer sarama.PartitionConsumer) {
for err := range consumer.Errors() {
Debug(1, "Failed to read access log entry:", err)
}
}
func (i *KafkaInput) Read(data []byte) (int, error) {
message := <-i.messages
if !i.config.UseJSON {
copy(data, message.Value)
return len(message.Value), nil
}
var kafkaMessage KafkaMessage
json.Unmarshal(message.Value, &kafkaMessage)
buf, err := kafkaMessage.Dump()
if err != nil {
Debug(1, "Failed to decode access log entry:", err)
return 0, err
}
copy(data, buf)
return len(buf), nil
}
func (i *KafkaInput) String() string {
return "Kafka Input: " + i.config.Host + "/" + i.config.Topic
}
-62
View File
@@ -1,62 +0,0 @@
package main
import (
"testing"
"github.com/Shopify/sarama"
"github.com/Shopify/sarama/mocks"
)
func TestInputKafkaRAW(t *testing.T) {
consumer := mocks.NewConsumer(t, nil)
defer consumer.Close()
consumer.ExpectConsumePartition("test", 0, mocks.AnyOffset).YieldMessage(&sarama.ConsumerMessage{Value: []byte("1 2 3\nGET / HTTP1.1\r\nHeader: 1\r\n\r\n")})
consumer.SetTopicMetadata(
map[string][]int32{"test": {0}},
)
input := NewKafkaInput("", &InputKafkaConfig{
consumer: consumer,
Topic: "test",
UseJSON: false,
})
buf := make([]byte, 1024)
n, err := input.Read(buf)
if err != nil {
t.Fatal(err)
}
if string(buf[:n]) != "1 2 3\nGET / HTTP1.1\r\nHeader: 1\r\n\r\n" {
t.Error("Message not properly decoded: ", string(buf[:n]), n)
}
}
func TestInputKafkaJSON(t *testing.T) {
consumer := mocks.NewConsumer(t, nil)
defer consumer.Close()
consumer.ExpectConsumePartition("test", 0, mocks.AnyOffset).YieldMessage(&sarama.ConsumerMessage{Value: []byte(`{"Req_URL":"/","Req_Type":"1","Req_ID":"2","Req_Ts":"3","Req_Method":"GET","Req_Headers":{"Header":"1"}}`)})
consumer.SetTopicMetadata(
map[string][]int32{"test": {0}},
)
input := NewKafkaInput("", &InputKafkaConfig{
consumer: consumer,
Topic: "test",
UseJSON: true,
})
buf := make([]byte, 1024)
n, err := input.Read(buf)
if err != nil {
t.Fatal(err)
}
if string(buf[:n]) != "1 2 3\nGET / HTTP/1.1\r\nHeader: 1\r\n\r\n" {
t.Error("Message not properly decoded: ", string(buf[:n]), n)
}
}
+61 -178
View File
@@ -1,214 +1,97 @@
package main
import (
"context"
"fmt"
raw "github.com/buger/gor/raw_socket_listener"
"log"
"net"
"strconv"
"sync"
"strings"
"time"
"github.com/buger/goreplay/capture"
"github.com/buger/goreplay/proto"
"github.com/buger/goreplay/size"
"github.com/buger/goreplay/tcp"
)
// TCPProtocol is a number to indicate type of protocol
type TCPProtocol uint8
const (
// ProtocolHTTP ...
ProtocolHTTP TCPProtocol = iota
// ProtocolBinary ...
ProtocolBinary
)
// Set is here so that TCPProtocol can implement flag.Var
func (protocol *TCPProtocol) Set(v string) error {
switch v {
case "", "http":
*protocol = ProtocolHTTP
case "binary":
*protocol = ProtocolBinary
default:
return fmt.Errorf("unsupported protocol %s", v)
}
return nil
}
func (protocol *TCPProtocol) String() string {
switch *protocol {
case ProtocolBinary:
return "binary"
case ProtocolHTTP:
return "http"
default:
return ""
}
}
// RAWInputConfig represents configuration that can be applied on raw input
type RAWInputConfig struct {
capture.PcapOptions
Expire time.Duration `json:"input-raw-expire"`
CopyBufferSize size.Size `json:"copy-buffer-size"`
Engine capture.EngineType `json:"input-raw-engine"`
TrackResponse bool `json:"input-raw-track-response"`
Protocol TCPProtocol `json:"input-raw-protocol"`
RealIPHeader string `json:"input-raw-realip-header"`
Stats bool `json:"input-raw-stats"`
quit chan bool // Channel used only to indicate goroutine should shutdown
host string
port uint16
}
// RAWInput used for intercepting traffic for given address
type RAWInput struct {
sync.Mutex
RAWInputConfig
messageStats []tcp.Stats
listener *capture.Listener
message chan *tcp.Message
cancelListener context.CancelFunc
data chan *raw.TCPMessage
address string
expire time.Duration
quit chan bool
engine int
listener *raw.Listener
}
// NewRAWInput constructor for RAWInput. Accepts raw input config as arguments.
func NewRAWInput(address string, config RAWInputConfig) (i *RAWInput) {
// Available engines for intercepting traffic
const (
EngineRawSocket = 1 << iota
EnginePcap
)
// NewRAWInput constructor for RAWInput. Accepts address with port as argument.
func NewRAWInput(address string, engine int, expire time.Duration) (i *RAWInput) {
i = new(RAWInput)
i.RAWInputConfig = config
i.message = make(chan *tcp.Message, 1000)
i.data = make(chan *raw.TCPMessage)
i.address = address
i.expire = expire
i.engine = engine
i.quit = make(chan bool)
var host, _port string
var err error
var port int
host, _port, err = net.SplitHostPort(address)
if err != nil {
log.Fatalf("input-raw: error while parsing address: %s", err)
}
if _port != "" {
port, err = strconv.Atoi(_port)
}
if err != nil {
log.Fatalf("parsing port error: %v", err)
}
i.host = host
i.port = uint16(port)
go i.listen(address)
i.listen(address)
for i.listener == nil {
time.Sleep(time.Millisecond)
}
i.listener.IsReady()
return
}
func (i *RAWInput) Read(data []byte) (n int, err error) {
var msg *tcp.Message
var buf []byte
select {
case <-i.quit:
return 0, ErrorStopped
case msg = <-i.message:
buf = msg.Data()
}
func (i *RAWInput) Read(data []byte) (int, error) {
msg := <-i.data
buf := msg.Bytes()
var header []byte
var msgType byte = ResponsePayload
if msg.IsIncoming {
msgType = RequestPayload
if i.RealIPHeader != "" {
buf = proto.SetHeader(buf, []byte(i.RealIPHeader), []byte(msg.SrcAddr))
}
header = payloadHeader(RequestPayload, msg.UUID(), msg.Start.UnixNano())
} else {
header = payloadHeader(ResponsePayload, msg.UUID(), msg.End.UnixNano()-msg.RequestStart.UnixNano())
}
header = payloadHeader(msgType, msg.UUID(), msg.Start.UnixNano(), msg.End.UnixNano()-msg.Start.UnixNano())
n = copy(data, header)
if len(data) > len(header) {
n += copy(data[len(header):], buf)
}
// to be removed....
if msg.Truncated || len(header)+len(buf)-n > 0 {
go Debug(2, "[INPUT-RAW] message truncated, increase copy-buffer-size")
}
// to be removed...
if msg.TimedOut {
go Debug(2, "[INPUT-RAW] message timeout reached, increase input-raw-expire")
}
if i.Stats {
stat := msg.Stats
go i.addStats(stat)
}
msg = nil
return n, nil
copy(data[0:len(header)], header)
copy(data[len(header):], buf)
return len(buf) + len(header), nil
}
func (i *RAWInput) listen(address string) {
var err error
i.listener, err = capture.NewListener(i.host, i.port, "", i.Engine, i.TrackResponse)
if err != nil {
log.Fatal(err)
}
i.listener.SetPcapOptions(i.PcapOptions)
err = i.listener.Activate()
if err != nil {
log.Fatal(err)
}
pool := tcp.NewMessagePool(i.CopyBufferSize, i.Expire, Debug, i.handler)
pool.End = endHint
pool.Start = startHint
var ctx context.Context
ctx, i.cancelListener = context.WithCancel(context.Background())
errCh := i.listener.ListenBackground(ctx, pool.Handler)
select {
case err := <-errCh:
log.Fatal(err)
case <-i.listener.Reading:
Debug(1, i)
}
}
address = strings.Replace(address, "[::]", "127.0.0.1", -1)
func (i *RAWInput) handler(m *tcp.Message) {
i.message <- m
Debug("Listening for traffic on: " + address)
host, port, err := net.SplitHostPort(address)
if err != nil {
log.Fatal("input-raw: error while parsing address", err)
}
i.listener = raw.NewListener(host, port, i.engine, i.expire)
ch := i.listener.Receiver()
for {
select {
case <-i.quit:
return
default:
}
i.data <- ch.Read()
}
}
func (i *RAWInput) String() string {
return fmt.Sprintf("Intercepting traffic from: %s:%d", i.host, i.port)
return "Intercepting traffic from: " + i.address
}
// GetStats returns the stats so far and reset the stats
func (i *RAWInput) GetStats() []tcp.Stats {
i.Lock()
defer func() {
i.messageStats = []tcp.Stats{}
i.Unlock()
}()
return i.messageStats
}
// Close closes the input raw listener
func (i *RAWInput) Close() error {
i.cancelListener()
func (i *RAWInput) Close() {
i.listener.Close()
close(i.quit)
return nil
}
func (i *RAWInput) addStats(mStats tcp.Stats) {
i.Lock()
if len(i.messageStats) >= 10000 {
i.messageStats = []tcp.Stats{}
}
i.messageStats = append(i.messageStats, mStats)
i.Unlock()
}
func startHint(pckt *tcp.Packet) (isIncoming, isOutgoing bool) {
isIncoming = proto.HasRequestTitle(pckt.Payload)
if isIncoming {
return
}
return false, proto.HasResponseTitle(pckt.Payload)
}
func endHint(m *tcp.Message) bool {
return proto.HasFullPayload(m.Data())
}
+206 -273
View File
@@ -4,220 +4,130 @@ import (
"bytes"
"io"
"io/ioutil"
"net"
"log"
"math/rand"
"net/http"
"net/http/httptest"
"net/http/httputil"
"os"
"os/exec"
"strconv"
"strings"
"sync"
"sync/atomic"
"testing"
"time"
"github.com/buger/goreplay/capture"
"github.com/buger/goreplay/proto"
)
const testRawExpire = time.Millisecond * 200
func TestRAWInputIPv4(t *testing.T) {
func TestRAWInput(t *testing.T) {
wg := new(sync.WaitGroup)
quit := make(chan int)
listener, err := net.Listen("tcp", ":0")
if err != nil {
t.Error(err)
return
}
origin := &http.Server{
Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("ab"))
}),
ReadTimeout: 10 * time.Second,
WriteTimeout: 10 * time.Second,
}
go origin.Serve(listener)
defer listener.Close()
_, port, _ := net.SplitHostPort(listener.Addr().String())
origin := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
defer origin.Close()
originAddr := strings.Replace(origin.Listener.Addr().String(), "[::]", "127.0.0.1", -1)
var respCounter, reqCounter int64
conf := RAWInputConfig{
Engine: capture.EnginePcap,
Expire: 0,
Protocol: ProtocolHTTP,
TrackResponse: true,
RealIPHeader: "X-Real-IP",
}
input := NewRAWInput(":"+port, conf)
input := NewRAWInput(originAddr, EnginePcap, testRawExpire)
defer input.Close()
output := NewTestOutput(func(data []byte) {
if data[0] == '1' {
body := payloadBody(data)
if len(proto.Header(body, []byte("X-Real-IP"))) == 0 {
t.Error("Should have X-Real-IP header", string(body))
atomic.AddInt64(&reqCounter, 1)
} else {
atomic.AddInt64(&respCounter, 1)
}
if Settings.debug {
log.Println(reqCounter, respCounter)
}
wg.Done()
})
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
client := NewHTTPClient(origin.URL, &HTTPClientConfig{})
go Start(quit)
for i := 0; i < 100; i++ {
// request + response
wg.Add(2)
client.Get("/")
time.Sleep(2 * time.Millisecond)
}
wg.Wait()
close(quit)
}
func TestInputRAW100Expect(t *testing.T) {
wg := new(sync.WaitGroup)
quit := make(chan int)
fileContent, _ := ioutil.ReadFile("COMM-LICENSE")
// Origing and Replay server initialization
origin := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
defer r.Body.Close()
ioutil.ReadAll(r.Body)
wg.Done()
}))
defer origin.Close()
originAddr := strings.Replace(origin.Listener.Addr().String(), "[::]", "127.0.0.1", -1)
input := NewRAWInput(originAddr, EnginePcap, time.Second)
defer input.Close()
// We will use it to get content of raw HTTP request
testOutput := NewTestOutput(func(data []byte) {
switch data[0] {
case RequestPayload:
if strings.Contains(string(data), "Expect: 100-continue") {
t.Error("Should not contain 100-continue header")
}
atomic.AddInt64(&reqCounter, 1)
} else {
atomic.AddInt64(&respCounter, 1)
wg.Done()
case ResponsePayload:
wg.Done()
}
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
replay := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
defer r.Body.Close()
body, _ := ioutil.ReadAll(r.Body)
client := NewHTTPClient("127.0.0.1:"+port, &HTTPClientConfig{})
emitter := NewEmitter(quit)
defer emitter.Close()
go emitter.Start(plugins, Settings.Middleware)
for i := 0; i < 10; i++ {
wg.Add(2)
_, err = client.Get("/")
if err != nil {
t.Error(err)
return
if !bytes.Equal(body, fileContent) {
buf, _ := httputil.DumpRequest(r, true)
t.Error("Wrong POST body:", string(buf))
}
}
wg.Wait()
const want = 10
if reqCounter != respCounter && reqCounter != want {
t.Errorf("want %d requests and %d responses, got %d requests and %d responses", want, want, reqCounter, respCounter)
}
}
func TestRAWInputNoKeepAlive(t *testing.T) {
wg := new(sync.WaitGroup)
quit := make(chan int)
wg.Done()
}))
defer replay.Close()
listener, err := net.Listen("tcp", "127.0.0.1:0")
httpOutput := NewHTTPOutput(replay.URL, &HTTPOutputConfig{})
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{testOutput, httpOutput}
go Start(quit)
// Origin + Response/Request Test Output + Request Http Output
wg.Add(4)
curl := exec.Command("curl", "http://"+originAddr, "--data-binary", "@COMM-LICENSE")
err := curl.Run()
if err != nil {
t.Fatal(err)
}
origin := &http.Server{
Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("ab"))
}),
ReadTimeout: 10 * time.Second,
WriteTimeout: 10 * time.Second,
}
origin.SetKeepAlivesEnabled(false)
go origin.Serve(listener)
defer listener.Close()
_, port, _ := net.SplitHostPort(listener.Addr().String())
conf := RAWInputConfig{
Engine: capture.EnginePcap,
Expire: testRawExpire,
Protocol: ProtocolHTTP,
TrackResponse: true,
}
input := NewRAWInput(":"+port, conf)
var respCounter, reqCounter int64
output := NewTestOutput(func(data []byte) {
if data[0] == '1' {
atomic.AddInt64(&reqCounter, 1)
} else {
atomic.AddInt64(&respCounter, 1)
}
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
client := NewHTTPClient("127.0.0.1:"+port, &HTTPClientConfig{})
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
for i := 0; i < 10; i++ {
// request + response
wg.Add(2)
_, err = client.Get("/")
if err != nil {
t.Error(err)
return
}
log.Fatal(err)
}
wg.Wait()
const want = 10
if reqCounter != respCounter && reqCounter != want {
t.Errorf("want %d requests and %d responses, got %d requests and %d responses", want, want, reqCounter, respCounter)
}
emitter.Close()
}
func TestRAWInputIPv6(t *testing.T) {
wg := new(sync.WaitGroup)
quit := make(chan int)
listener, err := net.Listen("tcp", "[::1]:0")
if err != nil {
return
}
origin := &http.Server{
Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("ab"))
}),
ReadTimeout: 10 * time.Second,
WriteTimeout: 10 * time.Second,
}
go origin.Serve(listener)
defer listener.Close()
_, port, _ := net.SplitHostPort(listener.Addr().String())
originAddr := "[::1]:" + port
var respCounter, reqCounter int64
conf := RAWInputConfig{
Engine: capture.EnginePcap,
Protocol: ProtocolHTTP,
TrackResponse: true,
}
input := NewRAWInput(originAddr, conf)
output := NewTestOutput(func(data []byte) {
if data[0] == '1' {
atomic.AddInt64(&reqCounter, 1)
} else {
atomic.AddInt64(&respCounter, 1)
}
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
client := NewHTTPClient(originAddr, &HTTPClientConfig{})
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
for i := 0; i < 10; i++ {
// request + response
wg.Add(2)
_, err = client.Get("/")
if err != nil {
t.Error(err)
return
}
}
wg.Wait()
const want = 10
if reqCounter != respCounter && reqCounter != want {
t.Errorf("want %d requests and %d responses, got %d requests and %d responses", want, want, reqCounter, respCounter)
}
emitter.Close()
close(quit)
}
func TestInputRAWChunkedEncoding(t *testing.T) {
@@ -235,13 +145,8 @@ func TestInputRAWChunkedEncoding(t *testing.T) {
}))
originAddr := strings.Replace(origin.Listener.Addr().String(), "[::]", "127.0.0.1", -1)
conf := RAWInputConfig{
Engine: capture.EnginePcap,
Expire: time.Second,
Protocol: ProtocolHTTP,
TrackResponse: true,
}
input := NewRAWInput(originAddr, conf)
input := NewRAWInput(originAddr, EnginePcap, time.Second)
defer input.Close()
replay := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
defer r.Body.Close()
@@ -258,113 +163,141 @@ func TestInputRAWChunkedEncoding(t *testing.T) {
httpOutput := NewHTTPOutput(replay.URL, &HTTPOutputConfig{Debug: true})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{httpOutput},
}
plugins.All = append(plugins.All, input, httpOutput)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{httpOutput}
go Start(quit)
emitter := NewEmitter(quit)
defer emitter.Close()
go emitter.Start(plugins, Settings.Middleware)
wg.Add(2)
curl := exec.Command("curl", "http://"+originAddr, "--header", "Transfer-Encoding: chunked", "--header", "Expect:", "--data-binary", "@README.md")
err := curl.Run()
if err != nil {
t.Error(err)
return
log.Fatal(err)
}
wg.Wait()
close(quit)
}
func BenchmarkRAWInputWithReplay(b *testing.B) {
var respCounter, reqCounter, replayCounter, capturedBody uint64
wg := &sync.WaitGroup{}
wg.Add(b.N * 3) // reqCounter + replayCounter + respCounter
func TestInputRAWLargePayload(t *testing.T) {
// FIXME: Large payloads does not work for travis for some reason...
if os.Getenv("TRAVIS_BUILD_DIR") != "" {
return
}
wg := new(sync.WaitGroup)
quit := make(chan int)
listener, err := net.Listen("tcp", "127.0.0.1:0")
sizeKb := 100
// Generate 100kb file
dd := exec.Command("dd", "if=/dev/urandom", "of=/tmp/large", "bs=1KB", "count="+strconv.Itoa(sizeKb))
err := dd.Run()
if err != nil {
b.Error(err)
return
}
listener0, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
b.Error(err)
return
log.Fatal("dd error:", err)
}
origin := http.Server{
Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("ab"))
}),
}
go origin.Serve(listener)
defer origin.Close()
originAddr := listener.Addr().String()
origin := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
defer req.Body.Close()
body, _ := ioutil.ReadAll(req.Body)
replay := http.Server{
Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
defer wg.Done()
defer r.Body.Close()
w.Write([]byte("ab"))
atomic.AddUint64(&replayCounter, 1)
data, err := ioutil.ReadAll(r.Body)
if err != nil && err != io.EOF && err != io.ErrUnexpectedEOF {
b.Log(err)
}
atomic.AddUint64(&capturedBody, uint64(len(data)))
}),
}
go replay.Serve(listener0)
defer replay.Close()
replayAddr := listener0.Addr().String()
conf := RAWInputConfig{
Engine: capture.EnginePcap,
Expire: testRawExpire,
Protocol: ProtocolHTTP,
TrackResponse: true,
}
input := NewRAWInput(originAddr, conf)
testOutput := NewTestOutput(func(data []byte) {
if data[0] == '1' {
atomic.AddUint64(&reqCounter, 1)
} else {
atomic.AddUint64(&respCounter, 1)
if len(body) != sizeKb*1000 {
t.Error("File size should be 1mb:", len(body))
}
atomic.AddUint64(&capturedBody, uint64(len(data)))
wg.Done()
})
httpOutput := NewHTTPOutput(replayAddr, &HTTPOutputConfig{Debug: false})
}))
originAddr := strings.Replace(origin.Listener.Addr().String(), "[::]", "127.0.0.1", -1)
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{testOutput, httpOutput},
}
input := NewRAWInput(originAddr, EnginePcap, testRawExpire)
defer input.Close()
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
now := time.Now()
var buf [1 << 20]byte
buf[1<<20-1] = 'a'
client := NewHTTPClient(originAddr, &HTTPClientConfig{ResponseBufferSize: 2 << 20, CompatibilityMode: true})
for i := 0; i < b.N; i++ {
if i&1 == 0 {
_, err = client.Get("/")
} else {
_, err = client.Post("/", buf[:])
}
if err != nil {
b.Log(err)
wg.Add(-3)
replay := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
body, _ := ioutil.ReadAll(req.Body)
// // req.Body = http.MaxBytesReader(w, req.Body, 1*1024*1024)
// // buf := make([]byte, 1*1024*1024)
// n, _ := req.Body.Read(buf)
// body := buf[0:n]
if len(body) != sizeKb*1000 {
t.Errorf("File size should be %d bytes: %d", sizeKb*1000, len(body))
}
wg.Done()
}))
defer replay.Close()
httpOutput := NewHTTPOutput(replay.URL, &HTTPOutputConfig{Debug: false})
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{httpOutput}
go Start(quit)
wg.Add(2)
curl := exec.Command("curl", "http://"+originAddr, "--header", "Transfer-Encoding: chunked", "--header", "Expect:", "--data-binary", "@/tmp/large")
err = curl.Run()
if err != nil {
log.Fatal("curl error:", err)
}
wg.Wait()
b.Logf("%d/%d Requests, %d/%d Responses, %d/%d Replayed, %d Bytes in %s\n", reqCounter, b.N, respCounter, b.N, replayCounter, b.N, capturedBody, time.Since(now))
emitter.Close()
close(quit)
}
func BenchmarkRAWInput(b *testing.B) {
quit := make(chan int)
origin := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
defer origin.Close()
originAddr := strings.Replace(origin.Listener.Addr().String(), "[::]", "127.0.0.1", -1)
var respCounter, reqCounter int64
input := NewRAWInput(originAddr, EnginePcap, testRawExpire)
defer input.Close()
output := NewTestOutput(func(data []byte) {
if data[0] == '1' {
atomic.AddInt64(&reqCounter, 1)
} else {
atomic.AddInt64(&respCounter, 1)
}
// log.Println("Captured ", reqCounter, "requests and ", respCounter, " responses")
})
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
go Start(quit)
emitted := 0
fileContent, _ := ioutil.ReadFile("LICENSE.txt")
for i := 0; i < b.N; i++ {
wg := new(sync.WaitGroup)
wg.Add(10 * 100)
emitted += 10 * 100
for w := 0; w < 100; w++ {
go func() {
client := NewHTTPClient(origin.URL, &HTTPClientConfig{})
for i := 0; i < 10; i++ {
if rand.Int63n(2) == 0 {
client.Post("/", fileContent)
} else {
client.Get("/")
}
time.Sleep(time.Duration(rand.Int63n(50)) * time.Millisecond)
wg.Done()
}
}()
}
wg.Wait()
}
time.Sleep(400 * time.Millisecond)
log.Println("Emitted ", emitted, ", Captured ", reqCounter, "requests and ", respCounter, " responses")
close(quit)
}
+16 -69
View File
@@ -2,10 +2,7 @@ package main
import (
"bufio"
"bytes"
"crypto/tls"
"fmt"
"io"
"log"
"net"
"os"
@@ -14,25 +11,15 @@ import (
// TCPInput used for internal communication
type TCPInput struct {
data chan []byte
listener net.Listener
address string
config *TCPInputConfig
stop chan bool // Channel used only to indicate goroutine should shutdown
}
type TCPInputConfig struct {
Secure bool `json:"input-tcp-secure"`
CertificatePath string `json:"input-tcp-certificate"`
KeyPath string `json:"input-tcp-certificate-key"`
listener net.Listener
}
// NewTCPInput constructor for TCPInput, accepts address with port
func NewTCPInput(address string, config *TCPInputConfig) (i *TCPInput) {
func NewTCPInput(address string) (i *TCPInput) {
i = new(TCPInput)
i.data = make(chan []byte, 1000)
i.data = make(chan []byte)
i.address = address
i.config = config
i.stop = make(chan bool)
i.listen(address)
@@ -40,47 +27,23 @@ func NewTCPInput(address string, config *TCPInputConfig) (i *TCPInput) {
}
func (i *TCPInput) Read(data []byte) (int, error) {
var buf []byte
select {
case <-i.stop:
return 0, ErrorStopped
case buf = <-i.data:
}
buf := <-i.data
copy(data, buf)
return len(buf), nil
}
func (i *TCPInput) Close() error {
close(i.stop)
return nil
}
func (i *TCPInput) listen(address string) {
if i.config.Secure {
cer, err := tls.LoadX509KeyPair(i.config.CertificatePath, i.config.KeyPath)
if err != nil {
log.Fatal("Error while loading --input-file certificate:", err)
}
listener, err := net.Listen("tcp", address)
i.listener = listener
config := &tls.Config{Certificates: []tls.Certificate{cer}}
listener, err := tls.Listen("tcp", address, config)
if err != nil {
log.Fatal("Can't start --input-tcp with secure connection:", err)
}
i.listener = listener
} else {
listener, err := net.Listen("tcp", address)
if err != nil {
log.Fatal("Can't start:", err)
}
i.listener = listener
if err != nil {
log.Fatal("Can't start:", err)
}
go func() {
for {
conn, err := i.listener.Accept()
conn, err := listener.Accept()
if err != nil {
log.Println("Error while Accept()", err)
@@ -95,32 +58,16 @@ func (i *TCPInput) listen(address string) {
func (i *TCPInput) handleConnection(conn net.Conn) {
defer conn.Close()
payloadSeparatorAsBytes := []byte(payloadSeparator)
reader := bufio.NewReader(conn)
var buffer bytes.Buffer
scanner := bufio.NewScanner(reader)
scanner.Split(payloadScanner)
for {
line, err := reader.ReadBytes('\n')
for scanner.Scan() {
i.data <- scanner.Bytes()
}
if err != nil {
if err != io.EOF {
fmt.Fprintln(os.Stderr, "Unexpected error in input tcp connection:", err)
}
break
}
if bytes.Equal(payloadSeparatorAsBytes[1:], line) {
asBytes := buffer.Bytes()
buffer.Reset()
newBuf := make([]byte, len(asBytes)-1)
copy(newBuf, asBytes)
i.data <- newBuf
} else {
buffer.Write(line)
}
if err := scanner.Err(); err != nil {
fmt.Fprintln(os.Stderr, "Unexpected error in input tcp connection:", err)
}
}
+48 -80
View File
@@ -1,40 +1,26 @@
package main
import (
"bytes"
"crypto/rand"
"crypto/rsa"
"crypto/tls"
"crypto/x509"
"encoding/pem"
"io"
"io/ioutil"
"log"
"math/big"
"net"
"os"
"sync"
"testing"
"time"
)
func TestTCPInput(t *testing.T) {
wg := new(sync.WaitGroup)
quit := make(chan int)
input := NewTCPInput("127.0.0.1:0", &TCPInputConfig{})
input := NewTCPInput("127.0.0.1:0")
output := NewTestOutput(func(data []byte) {
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
tcpAddr, err := net.ResolveTCPAddr("tcp", input.listener.Addr().String())
@@ -57,86 +43,68 @@ func TestTCPInput(t *testing.T) {
}
wg.Wait()
emitter.Close()
close(quit)
}
func genCertificate(template *x509.Certificate) ([]byte, []byte) {
priv, _ := rsa.GenerateKey(rand.Reader, 2048)
serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
serialNumber, _ := rand.Int(rand.Reader, serialNumberLimit)
template.SerialNumber = serialNumber
template.BasicConstraintsValid = true
template.NotBefore = time.Now()
template.NotAfter = time.Now().Add(time.Hour)
derBytes, _ := x509.CreateCertificate(rand.Reader, template, template, &priv.PublicKey, priv)
var certPem, keyPem bytes.Buffer
pem.Encode(&certPem, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
pem.Encode(&keyPem, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(priv)})
return certPem.Bytes(), keyPem.Bytes()
}
func TestTCPInputSecure(t *testing.T) {
serverCertPem, serverPrivPem := genCertificate(&x509.Certificate{
DNSNames: []string{"localhost"},
IPAddresses: []net.IP{net.ParseIP("127.0.0.1"), net.ParseIP("::")},
})
serverCertPemFile, _ := ioutil.TempFile("", "server.crt")
serverCertPemFile.Write(serverCertPem)
serverCertPemFile.Close()
serverPrivPemFile, _ := ioutil.TempFile("", "server.key")
serverPrivPemFile.Write(serverPrivPem)
serverPrivPemFile.Close()
defer func() {
os.Remove(serverPrivPemFile.Name())
os.Remove(serverCertPemFile.Name())
}()
func BenchmarkTCPInput(b *testing.B) {
wg := new(sync.WaitGroup)
quit := make(chan int)
input := NewTCPInput("127.0.0.1:0", &TCPInputConfig{
Secure: true,
CertificatePath: serverCertPemFile.Name(),
KeyPath: serverPrivPemFile.Name(),
})
input := NewTCPInput("127.0.0.1:0")
output := NewTestOutput(func(data []byte) {
wg.Done()
})
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
conf := &tls.Config{
InsecureSkipVerify: true,
}
tcpAddr, err := net.ResolveTCPAddr("tcp", input.listener.Addr().String())
conn, err := tls.Dial("tcp", input.listener.Addr().String(), conf)
if err != nil {
t.Fatal(err)
log.Fatal(err)
}
defer conn.Close()
msg := []byte("1 1 1\nGET / HTTP/1.1\r\n\r\n")
var connections []net.Conn
for i := 0; i < 100; i++ {
// Creating simple pool of workers, same as output_tcp have
dataChan := make(chan []byte, 1000)
for i := 0; i < 10; i++ {
conn, _ := net.DialTCP("tcp", nil, tcpAddr)
connections = append(connections, conn)
go func(conn net.Conn) {
for {
data := <-dataChan
buf := make([]byte, len(data)+2)
data = append(data, []byte("¶")...)
copy(buf, data)
conn.Write(buf)
}
}(conn)
}
if err != nil {
log.Fatal(err)
}
msg := []byte("GET / HTTP/1.1\r\n\r\n")
b.ResetTimer()
for i := 0; i < b.N; i++ {
wg.Add(1)
conn.Write(msg)
conn.Write([]byte(payloadSeparator))
dataChan <- msg
}
wg.Wait()
emitter.Close()
for _, conn := range connections {
conn.Close()
}
close(quit)
}
-108
View File
@@ -1,108 +0,0 @@
package main
import (
"bytes"
"crypto/tls"
"crypto/x509"
"fmt"
"io/ioutil"
"log"
"github.com/Shopify/sarama"
"github.com/buger/goreplay/proto"
)
// KafkaConfig should contains required information to
// build producers.
type InputKafkaConfig struct {
producer sarama.AsyncProducer
consumer sarama.Consumer
Host string `json:"input-kafka-host"`
Topic string `json:"input-kafka-topic"`
UseJSON bool `json:"input-kafka-json-format"`
}
type OutputKafkaConfig struct {
producer sarama.AsyncProducer
consumer sarama.Consumer
Host string `json:"output-kafka-host"`
Topic string `json:"output-kafka-topic"`
UseJSON bool `json:"output-kafka-json-format"`
}
// KafkaTLSConfig should contains TLS certificates for connecting to secured Kafka clusters
type KafkaTLSConfig struct {
CACert string `json:"kafka-tls-ca-cert"`
clientCert string `json:"kafka-tls-client-cert"`
clientKey string `json:"kafka-tls-client-key"`
}
// KafkaMessage should contains catched request information that should be
// passed as Json to Apache Kafka.
type KafkaMessage struct {
ReqURL string `json:"Req_URL"`
ReqType string `json:"Req_Type"`
ReqID string `json:"Req_ID"`
ReqTs string `json:"Req_Ts"`
ReqMethod string `json:"Req_Method"`
ReqBody string `json:"Req_Body,omitempty"`
ReqHeaders map[string]string `json:"Req_Headers,omitempty"`
}
// NewTLSConfig loads TLS certificates
func NewTLSConfig(clientCertFile, clientKeyFile, caCertFile string) (*tls.Config, error) {
tlsConfig := tls.Config{}
// Load client cert
cert, err := tls.LoadX509KeyPair(clientCertFile, clientKeyFile)
if err != nil {
return &tlsConfig, err
}
tlsConfig.Certificates = []tls.Certificate{cert}
// Load CA cert
caCert, err := ioutil.ReadFile(caCertFile)
if err != nil {
return &tlsConfig, err
}
caCertPool := x509.NewCertPool()
caCertPool.AppendCertsFromPEM(caCert)
tlsConfig.RootCAs = caCertPool
return &tlsConfig, err
}
// NewKafkaConfig returns Kafka config with or without TLS
func NewKafkaConfig(tlsConfig *KafkaTLSConfig) *sarama.Config {
config := sarama.NewConfig()
// Configuration options go here
if (tlsConfig != nil) && (tlsConfig.CACert != "") && (tlsConfig.clientCert != "") && (tlsConfig.clientKey != "") {
config.Net.TLS.Enable = true
tlsConfig, err := NewTLSConfig(tlsConfig.clientCert, tlsConfig.clientKey, tlsConfig.CACert)
if err != nil {
log.Fatal(err)
}
config.Net.TLS.Config = tlsConfig
}
return config
}
// Dump returns the given request in its HTTP/1.x wire
// representation.
func (m KafkaMessage) Dump() ([]byte, error) {
var b bytes.Buffer
b.WriteString(fmt.Sprintf("%s %s %s\n", m.ReqType, m.ReqID, m.ReqTs))
b.WriteString(fmt.Sprintf("%s %s HTTP/1.1", m.ReqMethod, m.ReqURL))
b.Write(proto.CRLF)
for key, value := range m.ReqHeaders {
b.WriteString(fmt.Sprintf("%s: %s", key, value))
b.Write(proto.CRLF)
}
b.Write(proto.CRLF)
b.WriteString(m.ReqBody)
return b.Bytes(), nil
}
+3 -14
View File
@@ -77,15 +77,12 @@ func (l *Limiter) Write(data []byte) (n int, err error) {
}
n, err = l.plugin.(io.Writer).Write(data)
return
}
func (l *Limiter) Read(data []byte) (n int, err error) {
if r, ok := l.plugin.(io.Reader); ok {
n, err = r.Read(data)
} else {
return 0, nil
}
n, err = l.plugin.(io.Reader).Read(data)
if l.isLimited() {
return 0, nil
@@ -95,13 +92,5 @@ func (l *Limiter) Read(data []byte) (n int, err error) {
}
func (l *Limiter) String() string {
return fmt.Sprintf("Limiting %s to: %d (isPercent: %v)", l.plugin, l.limit, l.isPercent)
}
// Close closes the resources.
func (l *Limiter) Close() error {
if fi, ok := l.plugin.(io.ReadCloser); ok {
fi.Close()
}
return nil
return fmt.Sprintf("Limiting %s to: %d (isPercent: %b)", l.plugin, l.limit, l.isPercent)
}
+20 -30
View File
@@ -18,21 +18,18 @@ func TestOutputLimiter(t *testing.T) {
}), "10")
wg.Add(10)
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
for i := 0; i < 100; i++ {
input.EmitGET()
}
wg.Wait()
emitter.Close()
close(quit)
}
func TestInputLimiter(t *testing.T) {
@@ -45,21 +42,18 @@ func TestInputLimiter(t *testing.T) {
})
wg.Add(10)
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
for i := 0; i < 100; i++ {
input.(*Limiter).plugin.(*TestInput).EmitGET()
}
wg.Wait()
emitter.Close()
close(quit)
}
// Should limit all requests
@@ -72,20 +66,18 @@ func TestPercentLimiter1(t *testing.T) {
wg.Done()
}), "0%")
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
for i := 0; i < 100; i++ {
input.EmitGET()
}
wg.Wait()
close(quit)
}
// Should not limit at all
@@ -99,18 +91,16 @@ func TestPercentLimiter2(t *testing.T) {
}), "100%")
wg.Add(100)
plugins := &InOutPlugins{
Inputs: []io.Reader{input},
Outputs: []io.Writer{output},
}
plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
emitter := NewEmitter(quit)
go emitter.Start(plugins, Settings.Middleware)
go Start(quit)
for i := 0; i < 100; i++ {
input.EmitGET()
}
wg.Wait()
close(quit)
}
+21 -53
View File
@@ -12,7 +12,6 @@ import (
"sync"
)
// Middleware represents a middleware object
type Middleware struct {
command string
@@ -22,16 +21,12 @@ type Middleware struct {
Stdin io.Writer
Stdout io.Reader
stop chan bool // Channel used only to indicate goroutine should shutdown
}
// NewMiddleware returns new middleware
func NewMiddleware(command string) *Middleware {
m := new(Middleware)
m.command = command
m.data = make(chan []byte, 1000)
m.stop = make(chan bool)
commands := strings.Split(command, " ")
cmd := exec.Command(commands[0], commands[1:]...)
@@ -39,7 +34,9 @@ func NewMiddleware(command string) *Middleware {
m.Stdout, _ = cmd.StdoutPipe()
m.Stdin, _ = cmd.StdinPipe()
cmd.Stderr = os.Stderr
if Settings.verbose {
cmd.Stderr = os.Stderr
}
go m.read(m.Stdout)
@@ -60,46 +57,30 @@ func NewMiddleware(command string) *Middleware {
return m
}
// ReadFrom start a worker to read from this plugin
func (m *Middleware) ReadFrom(plugin io.Reader) {
Debug(2, "[MIDDLEWARE-MASTER] Starting reading from", plugin)
Debug("[MIDDLEWARE-MASTER] Starting reading from", plugin)
go m.copy(m.Stdin, plugin)
}
func (m *Middleware) copy(to io.Writer, from io.Reader) {
buf := make([]byte, 5*1024*1024)
dst := make([]byte, len(buf)*4)
dst := make([]byte, len(buf)*2)
for {
nr, _ := from.Read(buf)
if nr == 0 || nr > len(buf) {
continue
}
if nr > 0 && len(buf) > nr {
payload := buf[0:nr]
hex.Encode(dst, buf[0:nr])
dst[nr*2] = '\n'
if Settings.PrettifyHTTP {
payload = prettifyHTTP(payload)
nr = len(payload)
m.mu.Lock()
to.Write(dst[0 : nr*2+1])
m.mu.Unlock()
if nr*2 > len(dst) {
continue
if Settings.debug {
Debug("[MIDDLEWARE-MASTER] Sending:", string(buf[0:nr]), "From:", from)
}
}
if Settings.PrettifyHTTP {
payload = prettifyHTTP(payload)
nr = len(payload)
}
hex.Encode(dst, payload)
dst[nr*2] = '\n'
m.mu.Lock()
to.Write(dst[0 : nr*2+1])
m.mu.Unlock()
Debug(3, "[MIDDLEWARE-MASTER] Sending:", string(buf[0:nr]), "From:", from)
}
}
@@ -119,39 +100,26 @@ func (m *Middleware) read(from io.Reader) {
buf := make([]byte, len(line)/2)
if _, err := hex.Decode(buf, line[:len(line)-1]); err != nil {
fmt.Fprintln(os.Stderr, "Failed to decode input payload", err, len(line), string(line[:len(line)-1]))
fmt.Fprintln(os.Stderr, "Failed to decode input payload", err, len(line))
}
Debug(3, "[MIDDLEWARE-MASTER] Received:", string(buf))
select {
case <-m.stop:
return
case m.data <- buf:
if Settings.debug {
Debug("[MIDDLEWARE-MASTER] Received:", string(buf))
}
m.data <- buf
}
return
}
func (m *Middleware) Read(data []byte) (int, error) {
var buf []byte
select {
case <-m.stop:
return 0, ErrorStopped
case buf = <-m.data:
}
buf := <-m.data
copy(data, buf)
n := copy(data, buf)
return n, nil
return len(buf), nil
}
func (m *Middleware) String() string {
return fmt.Sprintf("Modifying traffic using '%s' command", m.command)
}
// Close closes this plugin
func (m *Middleware) Close() error {
close(m.stop)
return nil
}
-122
View File
@@ -1,122 +0,0 @@
# GoReplay middleware
GoReplay support protocol for writing middleware in any language, which allows you to implement custom logic like authentification or complex rewriting and filterting. See protocol description here: https://github.com/buger/goreplay/wiki/Middleware, but the basic idea that middleware process receive hex encoded data via STDIN and emits it back via STDOUT. STDERR for loggin inside middleware. Yes, that's simple.
To simplify middleware creation we provide packages for NodeJS and Go (upcoming).
If you want to get access to original and replayed responses, do not forget adding `--output-http-track-response` and `--input-raw-track-response` options.
## NodeJS
Before starting, you should install the package via npm: `npm install goreplay_middleware`.
And initialize middleware the following way:
```javascript
var gor = require("goreplay_middleware");
// `init` will initialize STDIN listener
gor.init();
```
Basic idea is that you write callbacks which respond to `request`, `response`, `replay`, or `message` events, which contain request meta information and actuall http paylod. Depending on your needs you may compare, override or filter incoming requests and responses.
You can respond to the incoming events using `on` function, by providing callbacks:
```javascript
// valid events are `request`, `response` (original response), `replay` (replayed response), and `message` (all events)
gor.on('request', function(data) {
// `data` contains incoming message its meta information.
data
// Raw HTTP payload of `Buffer` type
// Example (hidden character for line endings shown on purpose):
// GET / HTTP/1.1\r\n
// User-Agent: Golang\r\n
// \r\n
data.http
// Meta is an array size of 4, containing:
// 1. request type - 1, 2 or 3 (which maps to `request`, `respose` and `replay`)
// 2. uuid - request unique identifier. Request responses have the same ID as their request.
// 3. timestamp of when request was made (for responses it is time of request start too)
// 4. latency - time difference between request start and finish. For `request` is zero.
data.meta
// Unique request ID. It should be same for `request`, `response` and `replay` events of the same request.
data.ID
// You should return data at the end of function, even if you not changed request, if you do not want to filter it out.
// If you just `return` nothing, request will be filtered
return data
})
```
### Mapping requests and responses
You can provide request ID as additional argument to `on` function, which allow you to map related requests and responses. Below is example of middleware which checks that original and replayed response have same HTTP status code.
```javascript
// Example of very basic way to compare if replayed traffic have no errors
gor.on("request", function(req) {
gor.on("response", req.ID, function(resp) {
gor.on("replay", req.ID, function(repl) {
if (gor.httpStatus(resp.http) != gor.httpStatus(repl.http)) {
// Note that STDERR is used for logging, and it actually will be send to `Gor` STDOUT.
// This trick is used because SDTIN and STDOUT already used for process communication.
// You can write logger that writes to files insead.
console.error(`${gor.httpPath(req.http)} STATUS NOT MATCH: 'Expected ${gor.httpStatus(resp.http)}' got '${gor.httpStatus(repl.http)}'`)
}
return repl;
})
return resp;
})
return req
})
```
This middleware includes `searchResponses` helper which is used to compare value of original response with the replayed response. If authentication system or xsrf protection returns unique tokens in headers or the response, it will be helpful to rewrite your requests based on them. Because tokens are unique, and the value contained in original and replayed responses will be different. So, you need to extract value from both responses, and rewrite requests based on those mappings.
`searchResponses` accepts request id, regexp pattern for searching the compared value (should include capture group), and callback which returns both original and replayed matched value.
Example:
```javascript
// Compare HTTP headers for response and replayed response, and map values
let tokMap = {};
gor.on("request", function(req) {
let tok = gor.httpHeader(req.http, "Auth-Token");
if (tok && tokMap[tok]) {
req.http = gor.setHttpHeader(req.http, "Auth-Token", tokMap[tok])
}
gor.searchResponses(req.ID, "X-Set-Token: (\w+)$", function(respTok, replTok) {
if (respTok && replTok) tokMap[respTok] = replTok;
})
return req;
})
```
### API documentation
Package expose following functions to process raw HTTP payloads:
* `init` - initialize middleware object, start reading from STDIN.
* `httpPath` - URL path of the request: `gor.httpPath(req.http)`
* `httpMethod` - Http method: 'GET', 'POST', etc. `gor.httpMethod(req.http)`.
* `setHttpPath` - update URL path: `req.http = gor.setHttpPath(req.http, newPath)`
* `httpPathParam` - get param from URL path: `gor.httpPathParam(req.http, queryParam)`
* `setHttpPathParam` - set URL param: `req.http = gor.setHttpPathParam(req.http, queryParam, value)`
* `httpStatus` - response status code
* `httpHeaders` - get all headers: `gor.httpHeaders(req.http)`
* `httpHeader` - get HTTP header: `gor.httpHeader(req.http, "Content-Length")`
* `setHttpHeader` - Set HTTP header, returns modified payload: `req.http = gor.setHttpHeader(req.http, "X-Replayed", "1")`
* `httpBody` - get HTTP Body: `gor.httpBody(req.http)`
* `setHttpBody` - Set HTTP Body and ensures that `Content-Length` header have proper value. Returns modified payload: `req.http = gor.setHttpBody(req.http, Buffer.from('hello!'))`.
* `httpBodyParam` - get POST body param: `gor.httpBodyParam(req.http, param)`
* `setHttpBodyParam` - set POST body param: `req.http = gor.setHttpBodyParam(req.http, param, value)`
* `httpCookie` - get HTTP cookie: `gor.httpCookie(req.http, "SESSSION_ID")`
* `setHttpCookie` - set HTTP cookie, returns modified payload: `req.http = gor.setHttpCookie(req.http, "iam", "cuckoo")`
* `deleteHttpCookie` - delete HTTP cookie, returns modified payload: `req.http = gor.deleteHttpCookie(req.http, "iam")`
Also it is totally legit to use standard `Buffer` functions like `indexOf` for processing the HTTP payload. Just do not forget that if you modify the body, update the `Content-Length` header with a new value. And if you modify any of the headers, line endings should be `\r\n`. Rest is up to your imagination.
## Support
Feel free to ask questions here and by sending email to [support@goreplay.org](mailto:support@goreplay.org). Commercial support is available and welcomed 🙈.
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// ======= GoReplay Middleware helper =============
// Created by Leonid Bugaev in 2017
//
// For questions use GitHub or support@goreplay.org
//
// GoReplay: https://github.com/buger/goreplay
// Middleware package: https://github.com/buger/goreplay/middleware
var middleware;
function init() {
var proxy = {
ch: {},
on: function(chan, id, cb) {
if (!cb && id) {
cb = id;
} else if (cb && id) {
chan = chan + "#" + id;
}
if (!proxy.ch[chan]) {
proxy.ch[chan] = [];
}
proxy.ch[chan].push({
created: new Date(),
cb: cb
});
return proxy;
},
emit: function(msg, raw) {
var chanPrefix;
switch(msg.type) {
case "1": chanPrefix = "request"; break;
case "2": chanPrefix = "response"; break;
case "3": chanPrefix = "replay"; break;
}
let resp = msg;
["message", chanPrefix, chanPrefix + "#" + msg.ID].forEach(function(chanID, idx){
if (proxy.ch[chanID]) {
proxy.ch[chanID].forEach(function(ch){
let r = ch.cb(msg);
if (resp) resp = r; // If one of callback decided not to send response back, do not override it in global callbacks
})
// Cleanup Individual message channels to avoid memory leaks
if (idx == 2) {
delete proxy.ch[chanID]
}
}
})
if (resp) {
process.stdout.write(`${resp.rawMeta.toString('hex')}${Buffer.from("\n").toString("hex")}${resp.http.toString('hex')}\n`)
}
return resp
}
}
// Clean up old messaged ID specific channels if they are older then 60s
let gc = function(gcTime){
let now = new Date();
for (k in proxy.ch) {
if (k.indexOf("#") == -1) continue;
proxy.ch[k] = proxy.ch[k].filter(function(ch){
return (now - ch.created) < gcTime
})
if (proxy.ch[k].length == 0) {
delete proxy.ch[k]
}
}
}
proxy.gc = gc
setInterval(function(){
gc(10 * 1000)
}, 1000);
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin
});
rl.on('line', function(line) {
let msg = parseMessage(line)
if (msg) {
proxy.emit(msg, line)
}
});
middleware = proxy;
return proxy;
}
function parseMessage(msg) {
try {
let payload = Buffer.from(msg, "hex");
let metaPos = payload.indexOf("\n");
let meta = payload.slice(0, metaPos);
let metaArr = meta.toString("ascii").split(" ");
let pType = metaArr[0];
let pID = metaArr[1];
let raw = payload.slice(metaPos + 1, payload.length);
return {
type: pType,
ID: pID,
rawMeta: meta,
meta: metaArr,
http: raw
}
} catch(e) {
fail(`Error while parsing incoming request: ${msg}`)
}
}
// Used to compare values from original and replayed responses
// Accepts request id, regexp pattern for searching the compared value (should include capture group), and callback which returns both original and replayed matched value.
// Example:
//
// // Compare HTTP headers for response and replayed response, and map values
// let tokMap = {};
//
// gor.on("request", function(req) {
// let tok = gor.httpHeader(req.http, "Auth-Token");
// if (tok && tokMap[tok]) {
// req.http = gor.setHttpHeader(req.http, "Auth-Token", tokMap[tok])
// }
//
// gor.searchResponses(req.ID, "X-Set-Token: (\w+)$", function(respTok, replTok) {
// tokMap[respTok] = replTok;
// })
//
// return req;
// })
//
function searchResponses(id, searchPattern, callback) {
let re = new RegExp(searchPattern);
// Using regexp require converting buffer to string
// Before converting to string we can use initial `Buffer.indexOf` check
let indexPattern = searchPattern.split("(")[0];
if (!indexPattern) {
console.error("Search regexp should include capture group, pointing to the value: `prefix-(.*)`")
return
}
middleware.on("response", id, function(resp){
if (resp.http.indexOf(indexPattern) == -1) {
callback()
return resp
}
let respMatch = resp.http.toString('utf-8').match(re);
if (!respMatch) {
callback()
return resp
}
middleware.on("replay", id, function(repl) {
if (repl.http.indexOf(indexPattern) == -1) {
callback(respMatch[1]);
return repl;
}
let replMatch = repl.http.toString('utf-8').match(re);
if (!replMatch) {
callback(respMatch[1]);
return repl;
}
callback(respMatch[1], replMatch[1]);
return repl;
})
return resp;
})
}
// =========== HTTP parsing =================
// Example HTTP payload record (including hidden characters):
//
// POST / HTTP/1.1\r\n
// User-Agent: Node\r\n
// Content-Length: 5\r\n
// \r\n
// hello
function httpMethod(payload) {
var pEnd = payload.indexOf(' ');
return payload.slice(0, pEnd).toString("ascii");
}
function httpPath(payload) {
var pStart = payload.indexOf(' ') + 1;
var pEnd = payload.indexOf(' ', pStart);
return payload.slice(pStart, pEnd).toString("ascii");
}
function setHttpPath(payload, newPath) {
var pStart = payload.indexOf(' ') + 1;
var pEnd = payload.indexOf(' ', pStart);
return Buffer.concat([payload.slice(0, pStart), Buffer.from(newPath), payload.slice(pEnd, payload.length)])
}
function httpPathParam(payload, name) {
let path = httpPath(payload);
let re = new RegExp(name + "=([^&$]+)");
let match = path.match(re);
if (match) return decodeURI(match[1]);
}
function setHttpPathParam(payload, name, value) {
let path = httpPath(payload);
let re = new RegExp(name + "=([^&$]+)");
let newPath = path.replace(re, name + "=" + encodeURI(value));
// If we should add new param instead
if (newPath == path) {
if (newPath.indexOf("?") == -1) {
newPath += "?"
} else {
newPath += "&"
}
newPath += name + "=" + encodeURI(value);
}
return setHttpPath(payload, newPath)
}
// HTTP response have status code in same position as `path` for requests
function httpStatus(payload) {
return httpPath(payload);
}
function setHttpStatus(payload, newStatus) {
return setHttpPath(payload, newStatus);
}
function httpHeaders(payload) {
var httpHeaderString = payload.slice(0,payload.indexOf("\r\n\r\n") + 4).toString().split("\n").slice(1);
var headers = {};
for (var item in httpHeaderString) {
var parts = httpHeaderString[item].split(":");
if (parts.length > 1) {
headers[parts[0]] = parts.slice(1).join(":").trim();
}
}
return headers;
}
function httpHeader(payload, name) {
var currentLine = 0;
var i = 0;
var header = { start: -1, end: -1, valueStart: -1 }
var nameBuf = Buffer.from(name);
var nameBufLower = Buffer.from(name.toLowerCase());
while(c = payload[i]) {
if (c == 13) { // new line "\n"
currentLine++;
i++
header.end = i
if (currentLine > 0 && header.start > 0 && header.valueStart > 0) {
if (nameBuf.compare(payload, header.start, header.valueStart - 1) == 0 ||
nameBufLower.compare(payload, header.start, header.valueStart - 1) == 0) { // ensure that headers are not case sensitive
header.value = payload.slice(header.valueStart, header.end - 1).toString("utf-8").trim();
header.name = payload.slice(header.start, header.valueStart - 1).toString("utf-8");
return header
}
}
header.start = -1
header.valueStart = -1
continue;
} else if (c == 10) { // "\r"
i++
continue;
} else if (c == 58) { // ":" Header/value separator symbol
if (header.valueStart == -1) {
header.valueStart = i + 1;
i++
continue;
}
}
if (header.start == -1) header.start = i;
i++
}
return
}
function setHttpHeader(payload, name, value) {
let header = httpHeader(payload, name);
if (!header) {
let headerStart = payload.indexOf(13) + 1;
return Buffer.concat([payload.slice(0, headerStart + 1), Buffer.from(name + ": " + value + "\r\n"), payload.slice(headerStart + 1, payload.length)])
} else {
return Buffer.concat([payload.slice(0, header.valueStart), Buffer.from(" " + value + "\r\n"), payload.slice(header.end + 1, payload.length)])
}
}
function deleteHttpHeader(payload, name) {
let header = httpHeader(payload, name);
if (header) {
return Buffer.concat([payload.slice(0, header.start), payload.slice(header.end+1, payload.length)])
}
return payload
}
function httpBody(payload) {
let bodyIndex = payload.indexOf("\r\n\r\n");
if (-1 != bodyIndex){
return payload.slice(bodyIndex + 4, payload.length);
} else {
return null;
}
}
function setHttpBody(payload, newBody) {
let p = setHttpHeader(payload, "Content-Length", newBody.length)
let headerEnd = p.indexOf("\r\n\r\n") + 4;
return Buffer.concat([p.slice(0, headerEnd), newBody])
}
function httpBodyParam(payload, name) {
let body = httpBody(payload);
let re = new RegExp(name + "=([^&$]+)");
if (body.indexOf(name + "=") != -1) {
let param = body.toString('utf-8').match(re);
if (param) {
return decodeURI(param[1]);
}
}
}
function setHttpBodyParam(payload, name, value) {
let body = httpBody(payload);
let re = new RegExp(name + "=([^&$]+)");
let newBody = body.toString('utf-8');
if (newBody.indexOf(name + "=") != -1 ) {
newBody = newBody.replace(re, name + "=" + encodeURI(value));
} else {
if (newBody.indexOf("=") != -1) {
newBody += "&";
}
newBody += name + "=" + value;
}
return setHttpBody(payload, Buffer.from(newBody));
}
function setHttpCookie(payload, name, value) {
let h = httpHeader(payload, "Cookie");
let cookie = h ? h.value : "";
let cookies = cookie.split("; ").filter(function(v){ return v.indexOf(name + "=") != 0 })
cookies.push(name + "=" + value)
return setHttpHeader(payload, "Cookie", cookies.join("; "))
}
function deleteHttpCookie(payload, name) {
let h = httpHeader(payload, "Cookie");
let cookie = h ? h.value : "";
let cookies = cookie.split("; ").filter(function(v){ return v.indexOf(name + "=") != 0 })
return setHttpHeader(payload, "Cookie", cookies.join("; "))
}
function httpCookie(payload, name) {
let h = httpHeader(payload, "Cookie");
let cookie = h ? h.value : "";
let value;
let cookies = cookie.split("; ").forEach(function(v){
if (v.indexOf(name + "=") == 0) {
value = v.substr(name.length + 1);
}
})
return value;
}
module.exports = {
init: init,
on: function(){ return middleware.on.apply(this, arguments) },
parseMessage: parseMessage,
searchResponses: searchResponses,
httpPath: httpPath,
httpMethod: httpMethod,
setHttpPath: setHttpPath,
httpPathParam: httpPathParam,
setHttpPathParam: setHttpPathParam,
httpStatus: httpStatus,
setHttpStatus: setHttpStatus,
httpHeader: httpHeader,
setHttpHeader: setHttpHeader,
deleteHttpHeader: deleteHttpHeader,
httpBody: httpBody,
setHttpBody: setHttpBody,
httpBodyParam: httpBodyParam,
setHttpBodyParam: setHttpBodyParam,
httpCookie: httpCookie,
setHttpCookie: setHttpCookie,
deleteHttpCookie: deleteHttpCookie,
test: testRunner,
benchmark: testBenchmark,
httpHeaders: httpHeaders
}
// =========== Tests ==============
function testRunner(){
["init", "filter", "parseMessage", "httpMethod", "httpPath", "setHttpHeader", "deleteHttpHeader", "httpPathParam", "httpHeader", "httpBody", "setHttpBody", "httpBodyParam", "httpCookie", "setHttpCookie", "deleteHttpCookie", "httpHeaders"].forEach(function(t){
console.log(`====== Start ${t} =======`)
eval(`TEST_${t}()`)
console.log(`====== End ${t} =======`)
})
}
function testBenchmark(){
const child_process = require('child_process');
let gor = init();
gor.on("message", function(){
});
gor.on("request", function(){
});
for (var i = 0; i<256; i++) {
let req = parseMessage(Buffer.from("1 2 3\nGET / HTTP/1.1\r\n\r\n").toString('hex'));
req.ID = +Date.now()
gor.emit(req);
gor.on("request", req.ID+"", function(){
gor.on("response", req.ID+"", function(){
})
})
if ( i % 3 == 0 ) {
let resp = parseMessage(Buffer.from("2 2 3\nHTTP/1.1 200 OK\r\n\r\n").toString('hex'));
resp.ID = req.ID
gor.emit(resp);
}
}
child_process.execSync("sleep 0.01");
gor.gc(1)
fail(JSON.stringify(gor.ch))
}
// Just print in red color
function fail(message) {
console.error("\x1b[31m[MIDDLEWARE] %s\x1b[0m", message)
}
function log(message) {
console.error(message)
}
function TEST_init() {
const child_process = require('child_process');
let received = 0;
let gor = init();
gor.on("message", function(){
received++; // should be called 3 times for for every request
});
gor.on("request", function(){
received++; // should be called 1 time only for request
});
gor.on("response", "2", function(){
received++; // should be called 1 time only for specific response
})
if (Object.keys(gor.ch).length != 3) {
return fail("Should create 3 channels");
}
let req = parseMessage(Buffer.from("1 2 3\nGET / HTTP/1.1\r\n\r\n").toString('hex'));
let resp = parseMessage(Buffer.from("2 2 3\nHTTP/1.1 200 OK\r\n\r\n").toString('hex'));
let resp2 = parseMessage(Buffer.from("2 3 3\nHTTP/1.1 200 OK\r\n\r\n").toString('hex'));
gor.emit(req);
gor.emit(resp);
gor.emit(resp2);
child_process.execSync("sleep 0.01");
if (received != 5) {
fail(`Should receive 5 messages: ${received}`);
}
}
function TEST_filter() {
const child_process = require('child_process');
let gor = init();
gor.on("request", function(req){
if (httpPath(req.http) != "/filter") {
return req
}
});
gor.on("request", function(req){
return req
});
let reqPass = parseMessage(Buffer.from("1 2 3\nGET / HTTP/1.1\r\n\r\n").toString('hex'));
let reqFilter = parseMessage(Buffer.from("1 2 3\nGET /filter HTTP/1.1\r\n\r\n").toString('hex'));
if (!gor.emit(reqPass)) {
return fail("Should not filter request")
}
if (gor.emit(reqFilter)) {
return fail("Should filter request even if one middleware rejected it")
}
}
function TEST_parseMessage() {
const exampleMessage = Buffer.from("1 2 3\nGET / HTTP/1.1\r\n\r\n").toString('hex')
let msg = parseMessage(exampleMessage)
let expected = { type: '1', ID: '2', meta: ["1", "2", "3"], http: Buffer.from("GET / HTTP/1.1\r\n\r\n") }
Object.keys(expected).forEach(function(k){
if (msg[k].toString() != expected[k].toString()) {
fail(`${k}: '${expected[k]}' != '${msg[k]}'`)
}
})
}
function TEST_httpPath() {
const examplePayload = "GET /test HTTP/1.1\r\n\r\n";
let payload = Buffer.from(examplePayload);
let path = httpPath(payload);
if (path != "/test") {
return fail(`Path '${patj}' != '/test'`)
}
let newPayload = setHttpPath(payload, '/')
if (newPayload.toString() != "GET / HTTP/1.1\r\n\r\n") {
return fail(`Malformed payload '${newPayload}'`)
}
newPayload = setHttpPath(payload, '/bigger')
if (newPayload.toString() != "GET /bigger HTTP/1.1\r\n\r\n") {
return fail(`Malformed payload '${newPayload}'`)
}
}
function TEST_httpMethod() {
const examplePayload = "GET /test HTTP/1.1\r\n\r\n";
let payload = Buffer.from(examplePayload);
let method = httpMethod(payload);
if (method != "GET") {
return fail(`Path '${method}' != 'GET'`)
}
}
function TEST_httpPathParam() {
let p = Buffer.from("GET / HTTP/1.1\r\n\r\n");
if (httpPathParam(p, "test")) {
return fail("Should not found param")
}
p = setHttpPathParam(p, "test", "123");
if (httpPath(p) != "/?test=123") {
return fail("Should set first param: " + httpPath(p));
}
if (httpPathParam(p, "test") != "123") {
return fail("Should get first param: " + httpPathParam(p, "test"));
}
p = setHttpPathParam(p, "qwer", "ty");
if (httpPath(p) != "/?test=123&qwer=ty") {
return fail("Should set second param: " + httpPath(p));
}
p = setHttpPathParam(p, "test", "4321");
if (httpPath(p) != "/?test=4321&qwer=ty") {
return fail("Should update first param: " + httpPath(p));
}
if (httpPathParam(p, "test") != "4321") {
return fail("Should update first param: " + httpPath(p));
}
}
function TEST_httpBodyParam() {
let p = Buffer.from("POST / HTTP/1.1\r\n\r\n");
if (httpBodyParam(p, "test")) {
return fail("Should not found param")
}
p = setHttpBodyParam(p, "test", "123");
if (httpBody(p).toString() != "test=123") {
return fail("Should set first param: " + httpBody(p).toString());
}
if (httpBodyParam(p, "test") != "123") {
return fail("Should get first param: " + httpBodyParam(p, "test"));
}
p = setHttpBodyParam(p, "qwer", "ty");
if (httpBody(p).toString() != "test=123&qwer=ty") {
return fail("Should set second param: " + httpBody(p).toString());
}
p = setHttpBodyParam(p, "test", "4321");
if (httpBody(p).toString() != "test=4321&qwer=ty") {
return fail("Should update first param: " + httpBody(p).toString());
}
if (httpBodyParam(p, "test") != "4321") {
return fail("Should update first param: " + httpBody(p).toString());
}
}
function TEST_httpHeader() {
const examplePayload = "GET / HTTP/1.1\r\nHost: localhost:3000\r\nUser-Agent: Node\r\nContent-Length:5\r\n\r\nhello";
let expected = {"Host": "localhost:3000", "User-Agent": "Node", "Content-Length": "5"}
Object.keys(expected).forEach(function(name){
let payload = Buffer.from(examplePayload);
let header = httpHeader(payload, name);
if (!header) {
fail(`Header not found. Was looking for: ${name}`)
}
if (header && header.value != expected[name]) {
fail(`${name}: '${expected[name]}' != '${header.value}'`)
}
})
}
function TEST_setHttpHeader() {
const examplePayload = "GET / HTTP/1.1\r\nUser-Agent: Node\r\nContent-Length: 5\r\n\r\nhello";
// Modify existing header
["", "1", "Long test header"].forEach(function(ua){
let expected = `GET / HTTP/1.1\r\nUser-Agent: ${ua}\r\nContent-Length: 5\r\n\r\nhello`;
let p = Buffer.from(examplePayload);
p = setHttpHeader(p, "User-Agent", ua);
if (p != expected) {
console.error(`setHeader failed, expected User-Agent value: ${ua}.\n${p}`)
}
})
// Adding new header
let expected = `GET / HTTP/1.1\r\nX-Test: test\r\nUser-Agent: Node\r\nContent-Length: 5\r\n\r\nhello`;
let p = Buffer.from(examplePayload);
p = setHttpHeader(p, "X-Test", "test");
if (p != expected) {
console.error(`setHeader failed, expected new header 'X-Test' header: ${p}`)
}
}
function TEST_deleteHttpHeader() {
const examplePayload = "GET / HTTP/1.1\r\nUser-Agent: Node\r\nContent-Length: 5\r\n\r\nhello";
// Adding new header
let expected = `GET / HTTP/1.1\r\nContent-Length: 5\r\n\r\nhello`;
let p = Buffer.from(examplePayload);
p = deleteHttpHeader(p, "User-Agent", "test");
if (p != expected) {
console.error(`setHeader failed, expected delete header 'User-Agent' header: ${p}`)
}
}
function TEST_httpBody() {
const examplePayload = "GET / HTTP/1.1\r\nUser-Agent: Node\r\nContent-Length: 5\r\n\r\nhello";
let body = httpBody(Buffer.from(examplePayload));
if (body != "hello") {
fail(`'${body}' != 'hello'`)
}
const exampleInvalidPayload = "Invalid HTTP Response by Network issue";
let invalidBody = httpBody(Buffer.from(exampleInvalidPayload));
if (invalidBody != null) {
fail(`'${invalidBody}' != 'null'`)
}
}
function TEST_setHttpBody() {
const examplePayload = "GET / HTTP/1.1\r\nUser-Agent: Node\r\nContent-Length: 5\r\n\r\nhello";
let p = setHttpBody(Buffer.from(examplePayload), Buffer.from("hello, world!"));
if (p != "GET / HTTP/1.1\r\nUser-Agent: Node\r\nContent-Length: 13\r\n\r\nhello, world!") {
fail(`Wrong body: '${p}'`)
}
}
function TEST_httpCookie() {
const examplePayload = "GET / HTTP/1.1\r\nCookie: a=b; test=zxc\r\n\r\n";
let c = httpCookie(Buffer.from(examplePayload), "test");
if (c != "zxc") {
return fail(`Should get cookie: ${c}`);
}
c = httpCookie(Buffer.from(examplePayload), "nope");
if (c != null) {
return fail(`Should not find cookie: ${c}`);
}
}
function TEST_setHttpCookie() {
const examplePayload = "GET / HTTP/1.1\r\nCookie: a=b; test=zxc\r\n\r\n";
let p = setHttpCookie(Buffer.from(examplePayload), "test", "1");
if (p != "GET / HTTP/1.1\r\nCookie: a=b; test=1\r\n\r\n") {
return fail(`Should update cookie: ${p}`)
}
p = setHttpCookie(Buffer.from(examplePayload), "new", "one");
if (p != "GET / HTTP/1.1\r\nCookie: a=b; test=zxc; new=one\r\n\r\n") {
return fail(`Should add new cookie: ${p}`)
}
}
function TEST_deleteHttpCookie() {
const examplePayload = "GET / HTTP/1.1\r\nCookie: a=b; test=zxc\r\n\r\n";
let p = deleteHttpCookie(Buffer.from(examplePayload), "a");
if (p != "GET / HTTP/1.1\r\nCookie: test=zxc\r\n\r\n") {
return fail(`Should delete cookie: ${p}`)
}
}
function TEST_httpHeaders() {
const examplePayload = "GET / HTTP/1.1\r\nHost: localhost:3000\r\nUser-Agent: Node\r\nContent-Length:5\r\n\r\nhello";
let expectedHeaders = {"Host": "localhost:3000", "User-Agent": "Node", "Content-Length": "5"}
let payload = Buffer.from(examplePayload);
let headers = httpHeaders(payload);
["Host", "User-Agent", "Content-Length"].forEach(function(header){
let actual = headers[header];
let expected = expectedHeaders[header];
if (!actual) {
fail(`${header} Header was not found`);
}
if (actual != expected) {
fail(`${header} Header not Equal to Expected: ${expected} was ${actual}`);
}
})
}
-16
View File
@@ -1,16 +0,0 @@
{
"name": "goreplay_middleware",
"version": "1.0.0",
"description": "Package for writing middleware for GoReplay https://goreplay.org",
"main": "middleware.js",
"scripts": {
"test": "node -e \"var gor = require('./middleware.js'); gor.test(); process.exit()\"",
"benchmark": "node -e \"var gor = require('./middleware.js'); gor.benchmark(); process.exit()\""
},
"keywords": [
"middleware",
"goreplay"
],
"author": "Leonid Bugaev",
"license": "LGPL-3.0"
}
+171 -176
View File
@@ -1,225 +1,220 @@
package main
// import (
// "bytes"
// "crypto/rand"
// "encoding/hex"
// "io"
// "net/http"
// "net/http/httptest"
// "strings"
// "sync"
// "testing"
// "time"
import (
"bytes"
"crypto/rand"
"encoding/hex"
"github.com/buger/gor/proto"
"io"
"net/http"
"net/http/httptest"
"strings"
"sync"
"testing"
"time"
)
// "github.com/buger/goreplay/capture"
// "github.com/buger/goreplay/proto"
// )
type fakeServiceCb func(string, int, []byte)
// type fakeServiceCb func(string, int, []byte)
// Simple service that generate token on request, and require this token for accesing to secure area
func NewFakeSecureService(wg *sync.WaitGroup, cb fakeServiceCb) *httptest.Server {
active_tokens := make([]string, 0)
var mu sync.Mutex
// // Simple service that generate token on request, and require this token for accesing to secure area
// func NewFakeSecureService(wg *sync.WaitGroup, cb fakeServiceCb) *httptest.Server {
// active_tokens := make([]string, 0)
// var mu sync.Mutex
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
mu.Lock()
defer mu.Unlock()
Debug("Received request: " + req.URL.String())
// server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
// mu.Lock()
// defer mu.Unlock()
switch req.URL.Path {
case "/token":
// Generate random token
token_length := 10
buf := make([]byte, token_length)
rand.Read(buf)
token := hex.EncodeToString(buf)
active_tokens = append(active_tokens, token)
// switch req.URL.Path {
// case "/token":
// // Generate random token
// token_length := 10
// buf := make([]byte, token_length)
// rand.Read(buf)
// token := hex.EncodeToString(buf)
// active_tokens = append(active_tokens, token)
w.Write([]byte(token))
// w.Write([]byte(token))
cb(req.URL.Path, 200, []byte(token))
case "/secure":
token := req.URL.Query().Get("token")
token_found := false
// cb(req.URL.Path, 200, []byte(token))
// case "/secure":
// token := req.URL.Query().Get("token")
// token_found := false
for _, t := range active_tokens {
if t == token {
token_found = true
break
}
}
// for _, t := range active_tokens {
// if t == token {
// token_found = true
// break
// }
// }
if token_found {
w.WriteHeader(http.StatusAccepted)
cb(req.URL.Path, 202, []byte(nil))
} else {
w.WriteHeader(http.StatusForbidden)
cb(req.URL.Path, 403, []byte(nil))
}
}
// if token_found {
// w.WriteHeader(http.StatusAccepted)
// cb(req.URL.Path, 202, []byte(nil))
// } else {
// w.WriteHeader(http.StatusForbidden)
// cb(req.URL.Path, 403, []byte(nil))
// }
// }
wg.Done()
}))
// wg.Done()
// }))
return server
}
// return server
// }
func TestFakeSecureService(t *testing.T) {
var resp, token []byte
// func TestFakeSecureService(t *testing.T) {
// var resp, token []byte
wg := new(sync.WaitGroup)
// wg := new(sync.WaitGroup)
server := NewFakeSecureService(wg, func(path string, status int, resp []byte) {
})
defer server.Close()
// server := NewFakeSecureService(wg, func(path string, status int, resp []byte) {
// })
// defer server.Close()
wg.Add(3)
// wg.Add(3)
client := NewHTTPClient(server.URL, &HTTPClientConfig{Debug: true})
resp, _ = client.Get("/token")
token = proto.Body(resp)
// client := NewHTTPClient(server.URL, &HTTPClientConfig{Debug: true})
// resp, _ = client.Get("/token")
// token = proto.Body(resp)
// Right token
resp, _ = client.Get("/secure?token=" + string(token))
if !bytes.Equal(proto.Status(resp), []byte("202")) {
t.Error("Valid token should return status 202:", string(proto.Status(resp)))
}
// // Right token
// resp, _ = client.Get("/secure?token=" + string(token))
// if !bytes.Equal(proto.Status(resp), []byte("202")) {
// t.Error("Valid token should return status 202:", string(proto.Status(resp)))
// }
// Wrong tokens forbidden
resp, _ = client.Get("/secure?token=wrong")
if !bytes.Equal(proto.Status(resp), []byte("403")) {
t.Error("Wrong token should returns status 403:", string(proto.Status(resp)))
}
// // Wrong tokens forbidden
// resp, _ = client.Get("/secure?token=wrong")
// if !bytes.Equal(proto.Status(resp), []byte("403")) {
// t.Error("Wrong token should returns status 403:", string(proto.Status(resp)))
// }
wg.Wait()
}
// wg.Wait()
// }
func TestEchoMiddleware(t *testing.T) {
wg := new(sync.WaitGroup)
// func TestEchoMiddleware(t *testing.T) {
// wg := new(sync.WaitGroup)
from := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Env", "prod")
w.Header().Set("RequestPath", r.URL.Path)
wg.Done()
}))
defer from.Close()
// from := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// w.Header().Set("Env", "prod")
// w.Header().Set("RequestPath", r.URL.Path)
// wg.Done()
// }))
// defer from.Close()
to := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Env", "test")
w.Header().Set("RequestPath", r.URL.Path)
wg.Done()
}))
defer to.Close()
// to := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// w.Header().Set("Env", "test")
// w.Header().Set("RequestPath", r.URL.Path)
// wg.Done()
// }))
// defer to.Close()
quit := make(chan int)
// quit := make(chan int)
Settings.middleware = "./examples/middleware/echo.sh"
// // Catch traffic from one service
// fromAddr := strings.Replace(from.Listener.Addr().String(), "[::]", "127.0.0.1", -1)
// conf := RAWInputConfig{
// engine: capture.EnginePcap,
// expire: testRawExpire,
// protocol: ProtocolHTTP,
// trackResponse: true,
// }
// input := NewRAWInput(fromAddr, conf)
// Catch traffic from one service
fromAddr := strings.Replace(from.Listener.Addr().String(), "[::]", "127.0.0.1", -1)
input := NewRAWInput(fromAddr, EnginePcap, testRawExpire)
defer input.Close()
// // And redirect to another
// output := NewHTTPOutput(to.URL, &HTTPOutputConfig{Debug: false})
// And redirect to another
output := NewHTTPOutput(to.URL, &HTTPOutputConfig{Debug: false})
// plugins := &InOutPlugins{
// Inputs: []io.Reader{input},
// Outputs: []io.Writer{output},
// }
// plugins.All = append(plugins.All, input, output)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
// // Start Gor
// emitter := NewEmitter(quit)
// go emitter.Start(plugins, "echo -n && GOR_TEST=true && ./examples/middleware/echo.sh")
// Start Gor
go Start(quit)
// // Wait till middleware initialization
// time.Sleep(100 * time.Millisecond)
// Wait till middleware initialization
time.Sleep(100 * time.Millisecond)
// // Should receive 2 requests from original + 2 from replayed
// client := NewHTTPClient(from.URL, &HTTPClientConfig{Debug: false})
// Should receive 2 requests from original + 2 from replayed
client := NewHTTPClient(from.URL, &HTTPClientConfig{Debug: false})
// for i := 0; i < 10; i++ {
// wg.Add(2)
// // Request should be echoed
// client.Get("/a")
// time.Sleep(5 * time.Millisecond)
// client.Get("/b")
// time.Sleep(5 * time.Millisecond)
// }
for i := 0; i < 10; i++ {
wg.Add(4)
// Request should be echoed
client.Get("/a")
time.Sleep(5 * time.Millisecond)
client.Get("/b")
time.Sleep(5 * time.Millisecond)
}
// wg.Wait()
// emitter.Close()
// }
wg.Wait()
close(quit)
time.Sleep(200 * time.Millisecond)
// func TestTokenMiddleware(t *testing.T) {
// var resp, token []byte
Settings.middleware = ""
}
// wg := new(sync.WaitGroup)
func TestTokenMiddleware(t *testing.T) {
var resp, token []byte
// from := NewFakeSecureService(wg, func(path string, status int, tok []byte) {
// time.Sleep(10 * time.Millisecond)
// })
// defer from.Close()
wg := new(sync.WaitGroup)
// to := NewFakeSecureService(wg, func(path string, status int, tok []byte) {
// switch path {
// case "/secure":
// if status != 202 {
// t.Error("Server should receive valid rewritten token")
// }
// }
from := NewFakeSecureService(wg, func(path string, status int, tok []byte) {
time.Sleep(10 * time.Millisecond)
})
defer from.Close()
// time.Sleep(10 * time.Millisecond)
// })
// defer to.Close()
to := NewFakeSecureService(wg, func(path string, status int, tok []byte) {
switch path {
case "/secure":
if status != 202 {
t.Error("Server should receive valid rewritten token")
}
}
// quit := make(chan int)
time.Sleep(10 * time.Millisecond)
})
defer to.Close()
// Settings.middleware = "echo -n && GOR_TEST=true && go run ./examples/middleware/token_modifier.go"
quit := make(chan int)
// fromAddr := strings.Replace(from.Listener.Addr().String(), "[::]", "127.0.0.1", -1)
// conf := RAWInputConfig{
// engine: capture.EnginePcap,
// expire: testRawExpire,
// protocol: ProtocolHTTP,
// trackResponse: true,
// }
// // Catch traffic from one service
// input := NewRAWInput(fromAddr, conf)
Settings.middleware = "go run ./examples/middleware/token_modifier.go"
// // And redirect to another
// output := NewHTTPOutput(to.URL, &HTTPOutputConfig{Debug: true})
fromAddr := strings.Replace(from.Listener.Addr().String(), "[::]", "127.0.0.1", -1)
// Catch traffic from one service
input := NewRAWInput(fromAddr, EnginePcap, testRawExpire)
defer input.Close()
// plugins := &InOutPlugins{
// Inputs: []io.Reader{input},
// Outputs: []io.Writer{output},
// }
// plugins.All = append(plugins.All, input, output)
// And redirect to another
output := NewHTTPOutput(to.URL, &HTTPOutputConfig{Debug: true})
// // Start Gor
// emitter := NewEmitter(quit)
// go emitter.Start(plugins, Settings.middleware)
Plugins.Inputs = []io.Reader{input}
Plugins.Outputs = []io.Writer{output}
// // Should receive 2 requests from original + 2 from replayed
// wg.Add(2)
// Start Gor
go Start(quit)
// client := NewHTTPClient(from.URL, &HTTPClientConfig{Debug: true})
// Wait for middleware to initialize
// Give go compiller time to build programm
time.Sleep(500 * time.Millisecond)
// // Sending traffic to original service
// resp, _ = client.Get("/token")
// token = proto.Body(resp)
// Should receive 2 requests from original + 2 from replayed
wg.Add(4)
// resp, _ = client.Get("/secure?token=" + string(token))
// if !bytes.Equal(proto.Status(resp), []byte("202")) {
// t.Error("Valid token should return 202:", proto.Status(resp))
// }
client := NewHTTPClient(from.URL, &HTTPClientConfig{Debug: true})
// wg.Wait()
// emitter.Close()
// Settings.middleware = ""
// }
// Sending traffic to original service
resp, _ = client.Get("/token")
token = proto.Body(resp)
// When delay is too smal, middleware does not always rewrite requests in time
// Hopefuly client will have delay more then 100ms :)
time.Sleep(100 * time.Millisecond)
resp, _ = client.Get("/secure?token=" + string(token))
if !bytes.Equal(proto.Status(resp), []byte("202")) {
t.Error("Valid token should return 202:", proto.Status(resp))
}
wg.Wait()
close(quit)
time.Sleep(100 * time.Millisecond)
Settings.middleware = ""
}
-2
View File
@@ -1,2 +0,0 @@
site_name: My Docs
theme: readthedocs
-178
View File
@@ -1,178 +0,0 @@
package main
import (
"io"
"sync/atomic"
"time"
"github.com/buger/goreplay/size"
)
// BinaryOutputConfig struct for holding binary output configuration
type BinaryOutputConfig struct {
Workers int `json:"output-binary-workers"`
Timeout time.Duration `json:"output-binary-timeout"`
BufferSize size.Size `json:"output-tcp-response-buffer"`
Debug bool `json:"output-binary-debug"`
TrackResponses bool `json:"output-binary-track-response"`
}
// BinaryOutput plugin manage pool of workers which send request to replayed server
// By default workers pool is dynamic and starts with 10 workers
// You can specify fixed number of workers using `--output-tcp-workers`
type BinaryOutput struct {
// Keep this as first element of struct because it guarantees 64bit
// alignment. atomic.* functions crash on 32bit machines if operand is not
// aligned at 64bit. See https://github.com/golang/go/issues/599
activeWorkers int64
address string
queue chan []byte
responses chan response
needWorker chan int
config *BinaryOutputConfig
queueStats *GorStat
}
// NewBinaryOutput constructor for BinaryOutput
// Initialize workers
func NewBinaryOutput(address string, config *BinaryOutputConfig) io.Writer {
o := new(BinaryOutput)
o.address = address
o.config = config
o.queue = make(chan []byte, 1000)
o.responses = make(chan response, 1000)
o.needWorker = make(chan int, 1)
// Initial workers count
if o.config.Workers == 0 {
o.needWorker <- initialDynamicWorkers
} else {
o.needWorker <- o.config.Workers
}
go o.workerMaster()
return o
}
func (o *BinaryOutput) workerMaster() {
for {
newWorkers := <-o.needWorker
for i := 0; i < newWorkers; i++ {
go o.startWorker()
}
// Disable dynamic scaling if workers poll fixed size
if o.config.Workers != 0 {
return
}
}
}
func (o *BinaryOutput) startWorker() {
client := NewTCPClient(o.address, &TCPClientConfig{
Debug: o.config.Debug,
Timeout: o.config.Timeout,
ResponseBufferSize: int(o.config.BufferSize),
})
deathCount := 0
atomic.AddInt64(&o.activeWorkers, 1)
for {
select {
case data := <-o.queue:
o.sendRequest(client, data)
deathCount = 0
case <-time.After(time.Millisecond * 100):
// When dynamic scaling enabled workers die after 2s of inactivity
if o.config.Workers == 0 {
deathCount++
} else {
continue
}
if deathCount > 20 {
workersCount := atomic.LoadInt64(&o.activeWorkers)
// At least 1 startWorker should be alive
if workersCount != 1 {
atomic.AddInt64(&o.activeWorkers, -1)
return
}
}
}
}
}
func (o *BinaryOutput) Write(data []byte) (n int, err error) {
if !isRequestPayload(data) {
return len(data), nil
}
buf := make([]byte, len(data))
copy(buf, data)
o.queue <- buf
if o.config.Workers == 0 {
workersCount := atomic.LoadInt64(&o.activeWorkers)
if len(o.queue) > int(workersCount) {
o.needWorker <- len(o.queue)
}
}
return len(data), nil
}
func (o *BinaryOutput) Read(data []byte) (int, error) {
resp := <-o.responses
Debug(2, "[OUTPUT-TCP] Received response:", string(resp.payload))
header := payloadHeader(ReplayedResponsePayload, resp.uuid, resp.startedAt, resp.roundTripTime)
copy(data[0:len(header)], header)
copy(data[len(header):], resp.payload)
return len(resp.payload) + len(header), nil
}
func (o *BinaryOutput) sendRequest(client *TCPClient, request []byte) {
meta := payloadMeta(request)
if len(meta) < 2 {
return
}
if !isRequestPayload(request) {
return
}
uuid := meta[1]
body := payloadBody(request)
start := time.Now()
resp, err := client.Send(body)
stop := time.Now()
if err != nil {
Debug(1, "Request error:", err)
}
if o.config.TrackResponses {
o.responses <- response{resp, uuid, start.UnixNano(), stop.UnixNano() - start.UnixNano()}
}
}
func (o *BinaryOutput) String() string {
return "Binary output: " + o.address
}
+5 -5
View File
@@ -1,7 +1,7 @@
package main
import (
"os"
"fmt"
)
// DummyOutput used for debugging, prints all incoming requests
@@ -9,16 +9,16 @@ type DummyOutput struct {
}
// NewDummyOutput constructor for DummyOutput
func NewDummyOutput() (di *DummyOutput) {
func NewDummyOutput(options string) (di *DummyOutput) {
di = new(DummyOutput)
return
}
func (i *DummyOutput) Write(data []byte) (int, error) {
n, err := os.Stdout.Write(data)
os.Stdout.Write([]byte{'\n'})
return n, err
fmt.Println("Writing message: ", string(data))
return len(data), nil
}
func (i *DummyOutput) String() string {
+17 -275
View File
@@ -1,305 +1,47 @@
package main
import (
"bufio"
"compress/gzip"
"errors"
"fmt"
"io"
"log"
"os"
"path/filepath"
"runtime/debug"
"sort"
"strconv"
"strings"
"sync"
"time"
"github.com/buger/goreplay/size"
)
var dateFileNameFuncs = map[string]func(*FileOutput) string{
"%Y": func(o *FileOutput) string { return time.Now().Format("2006") },
"%m": func(o *FileOutput) string { return time.Now().Format("01") },
"%d": func(o *FileOutput) string { return time.Now().Format("02") },
"%H": func(o *FileOutput) string { return time.Now().Format("15") },
"%M": func(o *FileOutput) string { return time.Now().Format("04") },
"%S": func(o *FileOutput) string { return time.Now().Format("05") },
"%NS": func(o *FileOutput) string { return fmt.Sprint(time.Now().Nanosecond()) },
"%r": func(o *FileOutput) string { return string(o.currentID) },
"%t": func(o *FileOutput) string { return string(o.payloadType) },
}
// FileOutputConfig ...
type FileOutputConfig struct {
FlushInterval time.Duration `json:"output-file-flush-interval"`
SizeLimit size.Size `json:"output-file-size-limit"`
OutputFileMaxSize size.Size `json:"output-file-max-size-limit"`
QueueLimit int `json:"output-file-queue-limit"`
Append bool `json:"output-file-append"`
BufferPath string `json:"output-file-buffer"`
onClose func(string)
}
// FileOutput output plugin
type FileOutput struct {
sync.RWMutex
pathTemplate string
currentName string
file *os.File
QueueLength int
chunkSize int
writer io.Writer
requestPerFile bool
currentID []byte
payloadType []byte
closed bool
totalFileSize size.Size
config *FileOutputConfig
path string
file *os.File
}
// NewFileOutput constructor for FileOutput, accepts path
func NewFileOutput(pathTemplate string, config *FileOutputConfig) *FileOutput {
func NewFileOutput(path string) io.Writer {
o := new(FileOutput)
o.pathTemplate = pathTemplate
o.config = config
o.updateName()
if strings.Contains(pathTemplate, "%r") {
o.requestPerFile = true
}
if config.FlushInterval == 0 {
config.FlushInterval = 100 * time.Millisecond
}
go func() {
for {
time.Sleep(config.FlushInterval)
if o.IsClosed() {
break
}
o.updateName()
o.flush()
}
}()
o.path = path
o.init(path)
return o
}
func getFileIndex(name string) int {
ext := filepath.Ext(name)
withoutExt := strings.TrimSuffix(name, ext)
func (o *FileOutput) init(path string) {
var err error
if idx := strings.LastIndex(withoutExt, "_"); idx != -1 {
if i, err := strconv.Atoi(withoutExt[idx+1:]); err == nil {
return i
}
o.file, err = os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0660)
if err != nil {
log.Fatal(o, "Cannot open file %q. Error: %s", path, err)
}
return -1
}
func setFileIndex(name string, idx int) string {
idxS := strconv.Itoa(idx)
ext := filepath.Ext(name)
withoutExt := strings.TrimSuffix(name, ext)
if i := strings.LastIndex(withoutExt, "_"); i != -1 {
if _, err := strconv.Atoi(withoutExt[i+1:]); err == nil {
withoutExt = withoutExt[:i]
}
}
return withoutExt + "_" + idxS + ext
}
func withoutIndex(s string) string {
if i := strings.LastIndex(s, "_"); i != -1 {
return s[:i]
}
return s
}
type sortByFileIndex []string
func (s sortByFileIndex) Len() int {
return len(s)
}
func (s sortByFileIndex) Swap(i, j int) {
s[i], s[j] = s[j], s[i]
}
func (s sortByFileIndex) Less(i, j int) bool {
if withoutIndex(s[i]) == withoutIndex(s[j]) {
return getFileIndex(s[i]) < getFileIndex(s[j])
}
return s[i] < s[j]
}
func (o *FileOutput) filename() string {
o.RLock()
defer o.RUnlock()
path := o.pathTemplate
for name, fn := range dateFileNameFuncs {
path = strings.Replace(path, name, fn(o), -1)
}
if !o.config.Append {
nextChunk := false
if o.currentName == "" ||
((o.config.QueueLimit > 0 && o.QueueLength >= o.config.QueueLimit) ||
(o.config.SizeLimit > 0 && o.chunkSize >= int(o.config.SizeLimit))) {
nextChunk = true
}
ext := filepath.Ext(path)
withoutExt := strings.TrimSuffix(path, ext)
if matches, err := filepath.Glob(withoutExt + "*" + ext); err == nil {
if len(matches) == 0 {
return setFileIndex(path, 0)
}
sort.Sort(sortByFileIndex(matches))
last := matches[len(matches)-1]
fileIndex := 0
if idx := getFileIndex(last); idx != -1 {
fileIndex = idx
if nextChunk {
fileIndex++
}
}
return setFileIndex(last, fileIndex)
}
}
return path
}
func (o *FileOutput) updateName() {
name := filepath.Clean(o.filename())
o.Lock()
o.currentName = name
o.Unlock()
}
func (o *FileOutput) Write(data []byte) (n int, err error) {
if o.requestPerFile {
o.Lock()
meta := payloadMeta(data)
o.currentID = meta[1]
o.payloadType = meta[0]
o.Unlock()
if !isOriginPayload(data) {
return len(data), nil
}
o.updateName()
o.Lock()
defer o.Unlock()
o.file.Write(data)
o.file.Write([]byte(payloadSeparator))
if o.file == nil || o.currentName != o.file.Name() {
o.closeLocked()
o.file, err = os.OpenFile(o.currentName, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0660)
o.file.Sync()
if strings.HasSuffix(o.currentName, ".gz") {
o.writer = gzip.NewWriter(o.file)
} else {
o.writer = bufio.NewWriter(o.file)
}
if err != nil {
log.Fatal(o, "Cannot open file %q. Error: %s", o.currentName, err)
}
o.QueueLength = 0
}
n, _ = o.writer.Write(data)
nSeparator, _ := o.writer.Write([]byte(payloadSeparator))
n += nSeparator
o.totalFileSize += size.Size(n)
o.QueueLength++
if Settings.OutputFileConfig.OutputFileMaxSize > 0 && o.totalFileSize >= Settings.OutputFileConfig.OutputFileMaxSize {
return n, errors.New("File output reached size limit")
}
return n, nil
}
func (o *FileOutput) flush() {
// Don't exit on panic
defer func() {
if r := recover(); r != nil {
log.Println("PANIC while file flush: ", r, o, string(debug.Stack()))
}
}()
o.Lock()
defer o.Unlock()
if o.file != nil {
if strings.HasSuffix(o.currentName, ".gz") {
o.writer.(*gzip.Writer).Flush()
} else {
o.writer.(*bufio.Writer).Flush()
}
if stat, err := o.file.Stat(); err == nil {
o.chunkSize = int(stat.Size())
} else {
log.Println("Error accessing file sats", err)
}
}
return len(data), nil
}
func (o *FileOutput) String() string {
return "File output: " + o.file.Name()
}
func (o *FileOutput) closeLocked() error {
if o.file != nil {
if strings.HasSuffix(o.currentName, ".gz") {
o.writer.(*gzip.Writer).Close()
} else {
o.writer.(*bufio.Writer).Flush()
}
o.file.Close()
if o.config.onClose != nil {
o.config.onClose(o.file.Name())
}
}
o.closed = true
return nil
}
// Close closes the output file that is being written to.
func (o *FileOutput) Close() error {
o.Lock()
defer o.Unlock()
return o.closeLocked()
}
// IsClosed returns if the output file is closed or not.
func (o *FileOutput) IsClosed() bool {
o.Lock()
defer o.Unlock()
return o.closed
return "File output: " + o.path
}

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