套接字UDP

import socket
c_socket= socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
while True:
    message = input("发给服务器：")
    c_socket.sendto(message.encode("utf-8"),("localhost",6789))
    data,server_address = c_socket.recvfrom(1024)
    print("来自服务器的数据：",data,server_address)
    if message=="N":
        break
c_socket.close()

服务端：

import socket
s_socket = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)  #数据报套接字，主要是UDP协议
s_socket.bind(("localhost",6789))
while True:
    data,address = s_socket.recvfrom(1024)
    print("来自客户端的数据:",address)
    send_mes = input("发送数据:")
    s_socket.sendto(send_mes.encode("utf-8"),address)
    if send_mes=="n":
        break
s_socket.close()