可以对比下tcp

服务端:

#udp测试

import socket

sk = socket.socket(type = socket.SOCK_DGRAM)

sk.bind(("127.0.0.1",10050))



# 收发

while 1:

    msg_str,addr = sk.recvfrom(1024)

    print("客户端:",msg_str.decode("utf-8"),addr)

    msg_s = input(">>>")

    sk.sendto(msg_s.encode("utf-8"),addr)

    if msg_s=='q':

        break



sk.close()

客户端:

import socket



sk = socket.socket(type=socket.SOCK_DGRAM)

#sk.connect(("127.0.0.1",10050))

while 1:

    msg_send = input("我:")

    sk.sendto(msg_send.encode('utf-8'),("127.0.0.1",10050))

    msg_r,addr = sk.recvfrom(1024)

    print("服务器:",msg_r.decode("utf-8"))

    if msg_r.decode("utf-8")=='q':

        break



sk.close()