import socket,sys,binascii

ip = ‘127.0.0.1‘
port = 9999

s = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
s.bind((ip,port))

print(f‘绑定端口:{port}...‘)

while True:
    data , addr = s.recvfrom(1024)
    print(‘接收到: %s:%s.‘ % addr , ‘发来的消息:‘,binascii.b2a_hex(data))
    print(‘-‘ * 30 , ‘OVER‘,‘-‘ * 30)
    s.sendto(data,addr)