python socket 模拟tcp通讯

 
#! /usr/bin/python
# -*- coding: utf-8 -*-
import socket
sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
server_address = ("127.0.0.1",12345)
print "Staring up on %s:%s" %  server_address
sock.bind(server_address)
sock.listen(5)
 
while True:
    print "waiting .........."
    connetion,client_address = sock.accept()
    try:
        print  "Connection from ",client_address
        data = connetion.recv(1024)
        print "Receive ‘%s‘" % data
    finally:
        connetion.close()

#! /usr/bin/python
# -*- coding: utf-8 -*-
import socket
sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
def check_tcp_status(ip,port):
 
    sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
    server_address = (ip,port)
    print "connecting to %s:%s" % server_address,port
    sock.connect(server_address)
 
    message = raw_input("pleas input: ")
    print "Sending ‘%s‘" % message
    sock.sendall(message)
    print "Closing socket"
    sock.close()
 
if __name__ == "__main__":
    print check_tcp_status("127.0.0.1",12345)