code: def send(self, s):
          
  
          m = Message()
          m.add_byte(cMSG_CHANNEL_DATA)
          m.add_int(self.remote_chanid)
          return self._send(s, m)
docs: Send data to the channel.  Returns the number of bytes sent, or 0 if
          the channel stream is closed.  Applications are responsible for
          checking that all data has been sent: if only some of the data was
          transmitted, the application needs to attempt delivery of the remaining
          data.
  
          :param str s: data to send
          :return: number of bytes actually sent, as an `int`
  
          :raises socket.timeout: if no data could be sent before the timeout set
              by `settimeout`.