title: Twisted: disable logging of Twisted-framework classes
body: <p>My Twisted-based client sends UDP packets in a loop.
  Therefore I'm using the class DatagramProtocol.
  This is the source:</p>
  
  <pre><code>#!/usr/bin/python
  # -*- coding: utf-8 -*-
  from twisted.application.service import Service
  from twisted.internet import reactor
  from twisted.internet.task import LoopingCall
  from twisted.internet.protocol import DatagramProtocol
  from twisted.python import log
  import logging
  
  class HeartbeatClient(Service):
      def __init__(self, host, port, data, beat_period):
          self.ip = host
          self.port = int(port)
          self.data = data
          self.beat = int(beat_period)
  
      def startService(self):
          self._call = LoopingCall(self._heartbeat)
          self._call.start(self.beat)
  
      def stopService(self):
          self._call.stop()
  
      def _heartbeat(self):
          protocol = DatagramProtocol()
          protocol.noisy = False
          port = reactor.listenUDP(0, protocol)
          port.write(self.data, (self.ip, self.port))
          port.stopListening()
  </code></pre>
  
  <p>now when I run this client with twistd, I permanently get log messages from the Twisted classes, namely from the class DatagramProtocol:</p>
  
  <pre><code>2011-09-11 18:39:25+0200 [-] (Port 55681 Closed)
  2011-09-11 18:39:30+0200 [-] twisted.internet.protocol.DatagramProtocol starting on 44903
  2011-09-11 18:39:30+0200 [-] (Port 44903 Closed)
  2011-09-11 18:39:35+0200 [-] twisted.internet.protocol.DatagramProtocol starting on 50044
  2011-09-11 18:39:35+0200 [-] (Port 50044 Closed)
  2011-09-11 18:39:40+0200 [-] twisted.internet.protocol.DatagramProtocol starting on 37450
  </code></pre>
  
  <p>Since these log messages are polluting my "own" logs, I wonder if I can disable these log messages. 
  As you can see I already reduced the amount of logs by calling <code>protocol.noisy = False</code>, but I'm still getting other Log messages. Also the command <code>g = protocol.ClientFactory().noisy = False</code> does not help.</p>
  
  <p>Is it possible to disable logging of all Twisted-internal classes, in a generic way - for ALL modules? Maybe by using some Twisted-logging configuration?</p>