python创建udp服务端和客户端

1.udp服务端server

 from socket import *
 from time import ctime

 HOST = ''
 PORT = 8888
 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)

     content = '[%s] %s' % (bytes(ctime(), "utf-8"), data)
     udpSerSock.sendto(content.encode("utf-8"), addr)
     print('...received from and returned to:', addr)

 udpSerSock.close()

2.udp客户端client

 from socket import *

 HOST = 'localhost'
 PORT = 8888
 BUFSIZ = 1024
 ADDR = (HOST, PORT)

 udpCliSock = socket(AF_INET, SOCK_DGRAM)

 while True:
     data = input('> ')
     if not data:
         break

     udpCliSock.sendto(data.encode("utf-8"), ADDR)
     data, ADDR = udpCliSock.recvfrom(BUFSIZ)
     if not data:
         break
     print(data)

 udpCliSock.close()