Predis\Connection\PhpiredisStreamConnection::createStreamSocket PHP Метод

    protected function createStreamSocket(ParametersInterface $parameters, $address, $flags, $context = null)
    {
        $socket = null;
        $timeout = isset($parameters->timeout) ? (double) $parameters->timeout : 5.0;
        $resource = @stream_socket_client($address, $errno, $errstr, $timeout, $flags);
        if (!$resource) {
            $this->onConnectionError(trim($errstr), $errno);
        }
        if (isset($parameters->read_write_timeout) && function_exists('socket_import_stream')) {
            $rwtimeout = (double) $parameters->read_write_timeout;
            $rwtimeout = $rwtimeout > 0 ? $rwtimeout : -1;
            $timeout = array('sec' => $timeoutSeconds = floor($rwtimeout), 'usec' => ($rwtimeout - $timeoutSeconds) * 1000000);
            $socket = $socket ?: socket_import_stream($resource);
            @socket_set_option($socket, SOL_SOCKET, SO_SNDTIMEO, $timeout);
            @socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, $timeout);
        }
        if (isset($parameters->tcp_nodelay) && function_exists('socket_import_stream')) {
            $socket = $socket ?: socket_import_stream($resource);
            socket_set_option($socket, SOL_TCP, TCP_NODELAY, (int) $parameters->tcp_nodelay);
        }
        return $resource;
    }