gistfile1.py

# -*- coding: utf-8 -*-
import socket
import select

if __name__ == '__main__':
    addr = ('127.0.0.1', 8004)
    epoll = select.epoll()
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect(addr)
    s.setblocking(0)
    epoll.register(s.fileno(), select.EPOLLOUT)
    while True:
        events = epoll.poll(1)
        if not events:
            break
        for fileno, event in events:
            if event & select.EPOLLOUT:
                s.send('hello, world\n\n') 
                epoll.modify(fileno, select.EPOLLIN)
                print 'send to server, listen epollin now'
            elif event & select.EPOLLIN:
                while True:
                    data = s.recv(1024)
                    if not data:
                        s.close()
                        break
                    else:
                        print data