udp示例

server:

# -*- coding:gb2312 -*-

import socket

import time

import struct

if __name__ == "__main__":

    s=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)

    host=‘‘

    port=12345

    s.bind((host,port))

    while 1:

        print("wait***")

        message,address=s.recvfrom(1024)

        message=bytes.decode(message)

        if message != ‘time‘:

            print("message error")

            continue

        secs=time.ctime()

        reply=str.encode(secs)

        s.sendto(reply,address)

        print("succeed")

client:

# -*- coding=gb2312 -*-

import socket

if __name__ == "__main__":

    s=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)

    address=(‘127.0.0.1‘,12345)

    s.connect(address)

    data=b‘time‘

    s.sendall(data)

    buf,address=s.recvfrom(1024)

    buf=bytes.decode(buf)

    print(buf)

    print(address)

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