ginuerzh
b01f5d065f
- Extract newRecorderObject, checkRateLimit, sniffingDial, and handleSniffedProtocol from the Handle method into dedicated files (sniffing.go, util.go) to reduce Handle from ~100 to ~65 lines. - Introduce SnifferBuilder: populated once during Init, reused via Build() per connection. Avoids reconstructing a 9-field sniffing.Sniffer literal on every inbound connection. - Hoist router nil check from the lazy dial closure into Handle so misconfigured handlers fail immediately instead of silently dropping unrecognised traffic with no error. - Add nil-addr guard in checkRateLimit (missing from the old inline version — would panic if the remote address were somehow nil). - Add comprehensive unit tests (44 tests across 5 test files) covering handler creation, Init, metadata parsing (defaults, custom, MITM, error paths), protocol dispatch (HTTP, TLS, unknown, empty), rate limiting, recorder objects, dial plumbing, and SnifferBuilder. - Add package-level godoc explaining the handler scope, limitations vs tcp/forward, and the connection processing flow. - Fix metadata comment: s/SnifferBuilder/sniffing.Sniffer/.
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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.