ensureControlPort

If TorOption.ControlPort or TorOption.__ControlPort have not been defined, TorOption.__ControlPort is added. This will always prefer configuring the option as a Unix Socket, if available for the host and runtime environment.

This can be overridden by defining TorOption.ControlPort or TorOption.__ControlPort.

e.g.

TorOption.__ControlPort.configure {
    // argument is already set to `auto`
}