code: def connect(self, ip, port):
          
          _check_valid_port_range(port)
  
          address = (ip, port)
  
          if address in self._addresses:
              error = 'Already connected to {0} on port {1}'.format(ip, port)
              log.exception(error)
              raise ValueError(error)
  
          self._addresses.append(address)
  
          if self._is_ready:
              _check_valid_num_connections(self._sock.socket_type,
                                           len(self._addresses))
  
              _connect_zmq_sock(self._sock, ip, port)
  
          return self
docs: Connects to a server at the specified ip and port.
  
          :param ip: an IP address
          :type ip: str or unicode
          :param port: port number from 1024 up to 65535
          :type port: int
          :rtype: self