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使用python实现tcp自动重连

更新时间:2020-05-04 00:12:01 作者:startmvc
操作系统:CentOS6.9_x64python语言版本:2.7.13问题描述现有一个tcp客户端程序,需定期从服务

操作系统: CentOS 6.9_x64

python语言版本: 2.7.13

问题描述

现有一个tcp客户端程序,需定期从服务器取数据,但由于种种原因(网络不稳定等)需要自动重连。

测试服务器示例代码:

https://github.com/mike-zhang/pyExamples/blob/master/socketRelate/tcpServer1_multithread.py

解决方案


'''
tcp client with reconnect
E-Mail : Mike_Zhang@live.com
'''

#! /usr/bin/env python
#-*- coding:utf-8 -*-

import os,sys,time
import socket

def doConnect(host,port):
 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 try :
 sock.connect((host,port))
 except :
 pass
 return sock

def main():
 host,port = "127.0.0.1",12345
 print host,port
 sockLocal = doConnect(host,port)

 while True :
 try :
 msg = str(time.time())
 sockLocal.send(msg)
 print "send msg ok : ",msg
 print "recv data :",sockLocal.recv(1024)
 except socket.error :
 print "\r\nsocket error,do reconnect "
 time.sleep(3)
 sockLocal = doConnect(host,port)
 except :
 print '\r\nother error occur '
 time.sleep(3)
 time.sleep(1)

if __name__ == "__main__" :
 main()

运行效果:


(py27env) [root@local t1]# python tcpClient1_reconnect.py
127.0.0.1 12345
send msg ok : 1498891374.98
recv data : 1498891374.98
send msg ok : 1498891375.98
recv data : 1498891375.98
send msg ok : 1498891376.98
recv data :

socket error,do reconnect
send msg ok : 1498891381.99
recv data : 1498891381.99
send msg ok : 1498891382.99
recv data : 1498891382.99

讨论

这里只是个简单的示例代码,实现了python的tcp自动重连。

使用python tcp端口号 python tcp python tcp server