Python实现绑定端口等待连接

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import sys,Socket

host = ''
port = 2012

s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
s.bind((host,port))
s.listen(100)

print "Server is runNIOn on port %d;press Ctrl-C to exit."%port

while 1:
    clientsock,clientaddr = s.accept()
    clientfile = clientsock.makefile('rw',0)
    clientfile.write("Welcome ,"+str(clientaddr)+"\n")
    clientfile.write("Please enter a string:")
    line = clientfile.readline().strip()
    clientfile.write("You entered %d characters.\n"%len(line))
    clientfile.close()
    clientsock.close()