python网络编程(二)-UDP协议(server端和client端)

server端

import socket
ip = '127.0.0.1'
port = 9001
sk = socket.socket(type=socket.SOCK_DGRAM)
sk.bind((ip,port))

# msg = sk.recv(1024)
msg,addr = sk.recvfrom(1024)  # recvfrom返回消息+对端地址和端口
print(msg)
sk.sendto(b'hello client',addr)

client端

import  socket

ip = '127.0.0.1'
port = 9001
sk = socket.socket(type=socket.SOCK_DGRAM)
sk.sendto(b'hello server',(ip,port))
msg = sk.recv(1024)
print(msg)