ginuerzh 548471717a fix(dialer): detect dead QUIC sessions in ICMP/QUIC dialer caches
When a QUIC session's MaxIdleTimeout expires, the underlying *quic.Conn dies
but the dead quicSession stays in the sessions map. The next Dial() finds
it and calls session.GetConn() which calls OpenStreamSync(context.Background())
against the dead connection — blocking indefinitely.

Add IsClosed() to both quicSession types (using the session context's Done()
channel) and add the liveness guard in both Dial() methods, matching the
existing pattern in KCP and MASQUE dialers.

Fixes go-gost/gost#225
2026-06-20 20:25:18 +08:00
2026-06-13 12:36:09 +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.

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