python： tcp网络编程

python： tcp网络编程

python的socket模块编写的tcp协议的c/s架构网络程序结构：

#!/usr/bin/env python
#server

from socket import *

ss = socket(AF_INET, SOCK_STREAM)
ss.bind((HOST,PORT))
ss.listen(BACKLOG)

while True:
css, caddr = ss.accept()
print "connected from:", caddr

while True:
data = css.recv(BUFSIZE)
if not data:
break
print "i am server ,receved: ", data
css.send("i am server")
css.close()
ss.close()

##############################################################
#!/usr/bin/env python

#client

from socket import *

cs = socket(AF_INET, SOCK_STREAM)
cs.connect((HOST,PORT))

while True:
cs.send("i am client")
data = cs.recv(BUFSIZE)
if not data:
break
print "i am client, receved: ", data
cs.close()