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使用python实现tcp自动重连

2020-01-04 16:55:42
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操作系统: CentOS 6.9_x64

python/103188.html">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 reconnectE-Mail : Mike_Zhang@live.com'''#! /usr/bin/env python#-*- coding:utf-8 -*-import os,sys,timeimport socketdef doConnect(host,port):  sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  try :    sock.connect((host,port))  except :    pass  return sockdef 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.py127.0.0.1 12345send msg ok : 1498891374.98recv data : 1498891374.98send msg ok : 1498891375.98recv data : 1498891375.98send msg ok : 1498891376.98recv data :socket error,do reconnectsend msg ok : 1498891381.99recv data : 1498891381.99send msg ok : 1498891382.99recv 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。

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