python :socket之udp 学习笔记

import socket

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

s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
s.setsockopt(socket.SOL_SOCKET,socket.SO_BROADCAST,1)
s.bind((‘‘,6969))
data, addr = s.recvfrom(2048)
print(" %s  : %s" % (addr, data.decode()))
while True:
    try:


        data = input(">>:")
        s.sendto(data.encode(), addr)


    except ConnectionError as e:
        break


s.close()

#7512


import socket

c =socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
c.setsockopt(socket.SOL_SOCKET,socket.SO_BROADCAST,1)
c.sendto(b"hello from client",(‘<broadcast>‘,6969))
while True:
    # data =input(">>:")
    # c.sendto(data.encode(),(‘<broadcast>‘,6969))
    data, addr = c.recvfrom(1024)
    print(addr,data.decode())