两台主机 UDP 连接 会话保持时间

Server：

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2018/2/6 14:15
# @Author  : Beam
# @File    : server.py
# @Software: PyCharm

from socket import *
import time
HOST = '192.168.0.10'
PORT = 9999
s = socket(AF_INET, SOCK_DGRAM)
s.bind((HOST, PORT))
print('...waiting for message..')
n = 100
data, address = s.recvfrom(1024)
print(data.decode('utf-8'), address)
while True:
    time.sleep(int(n))
    msg = str(n)
    s.sendto(bytes(msg.encode('utf8')) ,address)
    n +=1
s.close()

Client:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2018/2/6 14:16
# @Author  : Beam
# @File    : client.py
# @Software: PyCharm

from socket import *
HOST = '192.168.0.10'
PORT = 9999
s = socket(AF_INET, SOCK_DGRAM)
s.connect((HOST, PORT))
s.sendall(b'HI\r\n')
while True:
    data = s.recv(1024)
    if data:
        print('睡眠'+ str(data.decode('utf-8')) +'秒后，server发送到client还在连接')
s.close()