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 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。