# stop() Stop the Tor instance and release any resources. ``` func stop() async ``` ## Discussion Stopping is best-effort and non-throwing: if Tor is already idle, stopped, or in `.failed`, this is a no-op. A running production conformer sends `SIGNAL SHUTDOWN` through its embedded control client (per control-spec.txt §3.7), waits for `tor_run_main()` to return, closes the control socket, and optionally removes the data directory when `configuration.ownsDataDirectory` is true. > Important: After this call returns, the ``doc://Tor/documentation/Tor/TorSession/events`` stream is > terminated (no more values are emitted) and ``doc://Tor/documentation/Tor/TorSession/socksEndpoint`` > reverts to `nil`. Calling ``doc://Tor/documentation/Tor/TorSession/start()`` again on the same instance > is supported and creates a fresh data directory when > `configuration` specifies an ephemeral path.