ginuerzh
3f671abfb6
The ssuHandler's connMap cached UDP forwarding connections but spawned goroutines had no context cancellation mechanism. When relayPacketUDP exited (e.g. on SS UDP session timeout), orphaned goroutines blocked indefinitely on ReadFrom, preventing connMap cleanup and leaking both goroutines and connections. Fix: derive a cancellable context in relayPacketUDP so all per-session goroutines are cancelled on exit. Add SetReadDeadline with 30s periodic timeout so goroutines can check context cancellation instead of blocking forever. Store cancel functions in a cancels sync.Map for cleanup. Fixes #821
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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.