code: @Override
      public void connect(String server, int port, Map<String, Object> connectionParams) {
          log.debug("connect server: {} port {} connectionParams {}", new Object[] { server, port, connectionParams });
          connect(server, port, connectionParams, null);
      }
docs: Connect RTMP client to server via given port and with given connection parameters
  
  @param server
  Server
  @param port
  Connection port
  @param connectionParams
  Connection parameters