/**
* @return $this
* @throws ConnectionException
* @throws ConnectionException
*/
public function connect()
{
if (null === $this->socket) {
// create socket
$socket = \socket_create(\AF_INET, \SOCK_STREAM, \SOL_TCP);
if (!$socket) {
throw ConnectionException::socketError(\socket_strerror(\socket_last_error()));
}
// create socket wrapper
$socket = new Socket($socket);
$socket->connect($this->host, $this->port);
// keep the socket
$this->socket = $socket;
}
return $this;
}
