网络编程--python 实现简单的UDP客户端和服务端

#udp socket
#filename udpServer.py
import socket

server=socket.socket(socket.AF_INET ,socket.SOCK_DGRAM )
#bind the port
server.bind(('',17800))
print 'udp server starts'

while True:
f=file('recv.txt','a')
data,(addr,port)=server.recvfrom(1024)
print data
#,addr,port

f.write(data)
f.close()

#udp client
#file name udpClient.py
import socket
client=socket.socket(socket.AF_INET ,socket.SOCK_DGRAM )
client.sendto("hello python",('localhost',17800))
client.close()