message: add default timeout for socket
diff: @@ -1026,7 +1026,7 @@ static PHP_METHOD(swoole_socket_coro, connect)
  char *host;
  size_t l_host;
  zend_long port = 0;
  - double timeout;
  + double timeout = SW_CLIENT_DEFAULT_TIMEOUT;
  ZEND_PARSE_PARAMETERS_START(1, 3)
  Z_PARAM_STRING(host, l_host);
  