Making Twisted Python simple client server example to work -

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i new twisted python (twisted 12.x, python 2.6.x, unfortunately have use older version), , running client/server in server echoes simple message client (example chap 2 of twisted o'reilly book) running server in terminal, , client in separate terminal. client , server stuck (not returning). failing?

server: 

from twisted.internet import protocol, reactor  class echo(protocol.protocol):      def datareceived(self, data):         self.transport.write(data)  class echofactory(protocol.factory):      def buildprotocol(self, addr):         return echo()   reactor.listentcp(50000, echofactory()) reactor.run()

client: 

from twisted.internet import reactor, protocol  class echoclient(protocol.protocol):      def connectionmade(self):         self.transport.write("hello, world!")  def datareceived(self, data):     print "server said:", data      self.transport.loseconnection()  class echofactory(protocol.clientfactory):      def buildprotocol(self, addr):         return echoclient()  def clientconnectionfailed(self, connector, reason):      print "connection failed."     reactor.stop()  def clientconnectionlost(self, connector, reason):      print "connection lost."     reactor.stop()  reactor.connecttcp("localhost", 50000, echofactory()) reactor.run()

your datareceived, clientconnectionfailed, , clientconnectionlost methods not indented, means free functions never being called, rather overriding methods on protocol or clientfactory. client code default datareceived implementation, "do nothing".

also, way, python 2.6 out of security support , not receive updates. please upgrade version 2.7.9 @ least. should upgrade recent version of twisted, if new code; there no legitimate reason use software old; dangerous , irresponsible so.


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