Currently when dealing with a UnixServer, its connections do not return a value for getRemoteAddress, the returned value is actually NULL.
I`d like it to return the PID of the connecting client. Is that something you would integrate in this library?

public function getRemoteAddress()
{
 if($this->unix){
 $socket = socket_import_stream($this->stream);
 return socket_get_option($socket, SOL_SOCKET, 17 /*SO_PEERCRED*/);
 }
 return $this->parseAddress(@stream_socket_get_name($this->stream, true));
}

See http://php.net/manual/en/function.socket-get-option.php#101380