ginuerzh 7c44ba8125 hop: inline priority tracking and backup detection into Select scan
Collapse the separate anyBackupNode scan and partitionByPriority allocation
into the single candidate loop. Replace the old short-circuit + tiered logic
with four explicit stages:

  1. Single-pass candidate scan — priority stats + backup detection
  2. Priority short-circuit — top node wins when strictly higher, no backups
  3. Uniform fast path — skip sort when all priorities equal (common case)
  4. Tiered fallthrough — sort once, feed each priority tier to selector

Removes two helper functions and an extra O(n) allocation. Fixes hasBackup
to use mdutil.GetBool for consistency with BackupFilter.
2026-07-17 14:50:19 +08:00
2022-03-14 20:27:50 +08:00

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The implementation layer for the GOST proxy framework. Every interface defined in core/ is implemented here — handlers, listeners, dialers, connectors, plus config parsing, registries, and all cross-cutting concerns.

Package layout

Directory Purpose
handler/ Protocol handlers (http, socks4/5, ss, ssh, tunnel, tun, dns, redirect, etc.)
listener/ Protocol listeners (tcp, tls, ws, http2/3, quic, kcp, icmp, tun, udp, etc.)
dialer/ Outbound dialers (tcp, tls, ws, http2/3, quic, grpc, ssh, wg, kcp, icmp, etc.)
connector/ Destination connectors (http, socks4/5, ss, ssh, relay, tunnel, direct, etc.)
config/ Config struct, YAML/JSON parsing, and service construction
registry/ Typed global registries for all component types
service/ Accept loop wiring listener + handler
chain/ Multi-hop forwarding chain and route implementation
router/ Route table router (destination-based routing)
hop/ Node group with load-balanced selection
selector/ Load-balancing strategies (round-robin, random, weighted, hash)
auth/, bypass/, admission/ Authentication, bypass rules, admission control
resolver/, hosts/ DNS resolution and host mapping
limiter/ Traffic, connection, and rate limiters
recorder/, observer/ Traffic recording and observability
ingress/, sd/, routing/ Ingress control, service discovery, routing rules
logger/, metrics/, api/ Logging, Prometheus metrics, Web API
metadata/, ctx/ Metadata key-value system and context propagation
internal/ Shared internals — not importable externally

Component pattern

Every handler, listener, dialer, and connector follows the same pattern: init() registers a constructor into a global registry, the constructor takes functional options, and Init(metadata.Metadata) extracts typed configuration from the metadata key-value map.

See CLAUDE.md for detailed architecture and conventions.

S
Description
Extended (may be experimental) features outside the main gost tree.
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