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The p2p hub wrote every spoke packet to its tun device, relying on the host kernel's same-interface forwarding to hairpin it back to the destination peer. Hosts without that forwarding silently dropped peer-to-peer traffic. fromSpoke now resolves the destination through the route table first and delivers to the owning peer's stream; unroutable, self-addressed, and hub-local packets keep the device path. Tests cover direct delivery (v4/v6/large), self-send drops, unrouted fallback, and hub-own-address fallback. The suite passes under -race except TestRunDeviceProbeReportsSent, which races on a clean tree.
x
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.