python-socket UDP

tcp和udp区别 传送门

tsUserv.py  udp服务器

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

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()