array( 'local_cert' => isset($argv[2]) ? $argv[2] : (__DIR__ . '/localhost.pem') ) )); $server->on('connection', function (ConnectionInterface $conn) { echo '[' . $conn->getRemoteAddress() . ' connected]' . PHP_EOL; $conn->pipe($conn); }); $server->on('error', 'printf'); echo 'Listening on ' . $server->getAddress() . PHP_EOL; $loop->run();