update format

io/vmess/vmess.go

@@ -2,7 +2,8 @@
 package vmess
 
 import (
-	"net"
+  "fmt"
+	"io"
 )
 
 // VMessInput implements the input message of VMess protocol. It only contains
@@ -19,19 +20,19 @@ type VMessInput struct {
 	target   [256]byte
 }
 
-type VMessReader struct {
-	conn *net.Conn
+func Read(reader io.Reader) (input *VMessInput, err error) {
+  buffer := make([]byte, 17 /* version + user hash */)
+  nBytes, err := reader.Read(buffer)
+  if err != nil {
+    return
+  }
+  if nBytes != len(buffer) {
+    err = fmt.Errorf("Unexpected length of header %d", nBytes)
+    return
+  }
+  
+  return
 }
 
-// NewVMessReader creates a new VMessReader
-func NewVMessReader(conn *net.Conn) (VMessReader, error) {
-	var reader VMessReader
-	reader.conn = conn
-	return reader, nil
-}
+type VMessOutput [4]byte
 
-// Read reads data from current connection and form a VMessInput if possible.
-func (*VMessReader) Read() (VMessInput, error) {
-	var input VMessInput
-	return input, nil
-}