Twisted echo server

 1 #!/usr/bin/env python
 2 import sys
 3 
 4 if 'linux' in sys.platform:
 5     from twisted.internet import epollreactor
 6     try:
 7         epollreactor.install()
 8         print "EPOLL Reactor installed."
 9     except:
10         pass
11 elif 'win' in sys.platform:
12     from twisted.internet import iocpreactor
13     try:
14         iocpreactor.install()
15         print "IOCP Reactor installed."
16     except:
17         pass
18 elif 'freebsd' in sys.platform:
19     from twisted.internet import kqreactor
20     try:
21         kqreactor.install()
22         print "KQUEUE Reactor installed."
23     except:
24         pass
25 
26 
27 from twisted.internet import reactor, protocol
28 
29 
30 class Echo(protocol.Protocol):
31     def dataReceived(self, data):
32         self.transport.write(data)
33 
34 
35 class EchoFactory(protocol.Factory):
36     def buildProtocol(self, addr):
37         return Echo()
38 
39 
40 if __name__ == '__main__':
41     reactor.listenTCP(1234, EchoFactory())
42     reactor.run()