old_contents: ###############################################################################
  ##
  ##  Copyright 2011 Tavendo GmbH
  ##
  ##  Licensed under the Apache License, Version 2.0 (the "License");
  ##  you may not use this file except in compliance with the License.
  ##  You may obtain a copy of the License at
  ##
  ##      http://www.apache.org/licenses/LICENSE-2.0
  ##
  ##  Unless required by applicable law or agreed to in writing, software
  ##  distributed under the License is distributed on an "AS IS" BASIS,
  ##  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ##  See the License for the specific language governing permissions and
  ##  limitations under the License.
  ##
  ###############################################################################
  
  import sys
  from twisted.internet import reactor
  from twisted.python import log
  from autobahn.websocket import WebSocketServerFactory, WebSocketServerProtocol
  
  class EchoServerProtocol(WebSocketServerProtocol):
  
     def onMessage(self, msg, binary):
        self.sendMessage(msg, binary)
  
  
  class EchoServerFactory(WebSocketServerFactory):
  
     protocol = EchoServerProtocol
  
     def __init__(self, debug):
        self.debug = debug
  
  
  if __name__ == '__main__':
  
     log.startLogging(sys.stdout)
     factory = EchoServerFactory(debug = True)
     reactor.listenTCP(9000, factory)
     reactor.run()
  
new_contents: ###############################################################################
  ##
  ##  Copyright 2011 Tavendo GmbH
  ##
  ##  Licensed under the Apache License, Version 2.0 (the "License");
  ##  you may not use this file except in compliance with the License.
  ##  You may obtain a copy of the License at
  ##
  ##      http://www.apache.org/licenses/LICENSE-2.0
  ##
  ##  Unless required by applicable law or agreed to in writing, software
  ##  distributed under the License is distributed on an "AS IS" BASIS,
  ##  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ##  See the License for the specific language governing permissions and
  ##  limitations under the License.
  ##
  ###############################################################################
  
  import sys
  from twisted.internet import reactor
  from twisted.python import log
  from autobahn.websocket import WebSocketServerFactory, WebSocketServerProtocol
  
  class EchoServerProtocol(WebSocketServerProtocol):
  
     def onMessage(self, msg, binary):
        self.sendMessage(msg, binary)
  
  
  if __name__ == '__main__':
  
     log.startLogging(sys.stdout)
     factory = WebSocketServerFactory(debug = True)
     factory.protocol = EchoServerProtocol
     reactor.listenTCP(9000, factory)
     reactor.run()
  
subject: fix demo