python-socket UDP

tcp和udp区别 传送门

tsUserv.py  udp服务器

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from socket import * from time import ctime # UDP 时间戳服务器 HOST = '' PORT = 21567 BUFSIZ = 1024 ADDR = (HOST, PORT)   udpSerSock = socket(AF_INET,SOCK_DGRAM) udpSerSock.bind(ADDR)   while True:     print('waiting for message...')     data, addr = udpSerSock.recvfrom(BUFSIZ)     udpSerSock.sendto(('[%s] %s' %(ctime(),data)).encode(),addr)     print('...received from and returned to:',addr) udpSerSock.close()

　tsUclnt.py  udp 客户端

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from socket import * HOST = 'localhost' PORT = 21567 BUFSIZ = 1024 ADDR = (HOST, PORT) udpCliSock = socket(AF_INET, SOCK_DGRAM) while True:     data = input("> ")     if not data:         break     udpCliSock.sendto(bytes(data,'utf-8'),ADDR)     data,ADDR = udpCliSock.recvfrom(BUFSIZ)     if not data:         break     print(data) udpCliSock.close()