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#!/usr/bin/env python
"""Simple server that listens on port 6000 and echos back every input to the client.
Connect to it with:
telnet localhost 6000
Terminate the connection by terminating telnet (typically Ctrl-] and then 'quit').
"""
from gevent.server import StreamServer
# this handler will be run for each incoming connection in a dedicated greenlet
def echo(socket, address):
print 'New connection from %s:%s' % address
# using a makefile because we want to use readline()
fileobj = socket.makefile()
fileobj.write('Welcome to the echo server! Type quit to exit.\r\n')
fileobj.flush()
while True:
line = fileobj.readline()
if not line:
print "client disconnected"
break
if line.strip().lower() == 'quit':
print "client quit"
break
fileobj.write(line)
fileobj.flush()
print "echoed", repr(line)
if __name__ == '__main__':
# to make the server use SSL, pass certfile and keyfile arguments to the constructor
server = StreamServer(('0.0.0.0', 6000), echo)
# to start the server asynchronously, use its start() method;
# we use blocking serve_forever() here because we have no other jobs
print 'Starting echo server on port 6000'
server.serve_forever()
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