网络编程udp

网络编程udp-socket

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1.socketServer：启动程序，通过网络调试助手向指定IP发送信息，在后台打印出发送人信息和发送内容

from socket import *

def main():

    udpSocket = socket(AF_INET, SOCK_DGRAM)

    udpSocket.bind(("", 6789))

    #收，打印

    while True:

        recvInfor = udpSocket.recvfrom(1024)

        print("[%s]:%s"%(str(recvInfor[1]), recvInfor[0].decode("gb2312")))

if __name__ == "__main__":

    main()

2.socketClite：多进程启动，收发信息互不影响，后台打印聊天内容

from socket import *

from threading import Thread

def recv():

    while True:

        info = udpsocket.recvfrom(1024)

        print('\>>>发送人：%s , 内容：%s' % (str(info[1]), info[0].decode('gb2312')))

def send():

    while True:

        sendinfo = input('<<< ')

        udpsocket.sendto(sendinfo.encode('gb2312'), (TargethostIP, TargethostPort))

def main():

    global udpsocket

    global TargethostIP

    global TargethostPort

    udpsocket = socket(AF_INET, SOCK_DGRAM)

    udpsocket.bind(('', 5678))

    TargethostIP = input('对方的ip:')

    TargethostPort = int(input('对方的port:'))

    tr = Thread(target=recv)

    ts = Thread(target=send)

    tr.start()

    ts.start()

    tr.join()

    ts.join()

if __name__ == '__main__':

    main()

3.socketClite：多进程启动，收发信息互不影响，后台打印聊天内容并记录到log日志

import time

from socket import *

from threading import Thread

import socket

def get_ip(ip='192.168.138.39', port=6500):

    S_ip = ip

    S_port = port

    return S_ip, S_port

def send():

    while 1:

        sendnr = input('请输入发送内容：')

        sk.sendto(sendnr.encode('gbk'), ip_port)

        flag = True

        now_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())

        with open('udp.log', 'a') as f:

            f.write('\n' + now_time + ' 发送内容:' + sendnr)

def recv():

    while 1:

        recvnr = sk.recvfrom(1024)

        nr = recvnr[0].decode('gbk')

        ip_port = recvnr[1]

        now_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())

        info = '\n%s 接受内容: nr: %s, ip and port: %s'% (now_time, nr, ip_port)

        print(info)

        flag = False

        with open('udp.log', 'a') as f:

            f.write(info)

def main():

    global sk

    global ip_port

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

    sk.bind(('', 5678))

    sip = input('对方ip')

    if len(sip) > 0:

        sport = int(input('对方port'))

        ip_port = get_ip(sip, sport)

        with open('udp.log', 'a') as f:

            f.write('\n' + str(ip_port))

    else:

        ip_port = get_ip()

        with open('udp.log', 'a') as f:

            f.write('\n' + str(ip_port))

    ts = Thread(target=send)

    tr = Thread(target=recv)

    ts.start()

    tr.start()

    ts.join()

    tr.join()

if __name__ == '__main__':

    main()