# socksEndpoint Tor’s local SOCKS5 proxy endpoint once start succeeds, else `nil`. ``` var socksEndpoint: HostPort? { get } ``` ## Discussion Populated by `discoverSocksPort()` via the `GETINFO net/listeners/socks` control-protocol key (control-spec.txt §3.9). Remains `nil` until Tor reaches [`TorState.running`](/documentation/Tor/TorState/running) AND the port discovery completes; reverts to `nil` on [`stop()`](/documentation/Tor/TorClient/stop()). - Typical value: `HostPort(host: "127.0.0.1", port: )` when `configuration.socksPort == .ephemeral`, or the literal fixed port when `.fixed(n)` was requested. > Important: Do not hand this endpoint to client code before > ``doc://Tor/documentation/Tor/TorClient/waitUntilBootstrapped(timeout:)`` succeeds — the SOCKS listener > is reachable immediately, but traffic will fail with > `Proxy connection refused` until bootstrap reaches 100%.