echo_server_diesel.py

#!/usr/bin/env python
# python network programming cookbook
# this is optimized for python 2.7
# pip install diesel
# this has been modified from the original version
# has been recreated here for my personal study
# run it like $ python script.py --port=8080

import diesel
import argparse

class EchoServer(object):

    def handler(self, remote_addr):
        host, port = remote_addr[0], remote_addr[1]
        print "Echo client connected from: %s:%d" %(host, port)

        while True:
            try:
                message = diesel.until_eol()
                your_message = ': '.join(['You said', message])
                diesel.send(your_message)
            except Exception, e:
                print "Exception:",e

def main(server_port):
    app = diesel.Application()
    server = EchoServer()
    app.add_service(diesel.Service(server.handler, server_port))
    app.run()

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Echo server example with Diesel')
    parser.add_argument('--port', action="store", dest="port", type=int, required=True)
    given_args = parser.parse_args()
    port = given_args.port
    main(port)