操作系統： CentOS 6.9_x64

python語言版本： 2.7.13

問題描述

現有一個tcp客戶端程序，需定期從服務器取數據，但由于種種原因（網絡不穩定等）需要自動重連。

測試服務器示例代碼：

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

解決方案

'''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()

運行效果：

(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

討論

這里只是個簡單的示例代碼，實現了python的tcp自動重連。