这样的socket服务算是启动了吗？

Question

端口是9500，我发现服务端隔一段时间就连接上后没反应,重启就正常了，是能够连接的，但是没反应，也没报错，连接上的话会有消息发回来的，我用twisted写的

下面是我的代码

#!/usr/bin/python
# -*- encoding: utf-8 -*-
import json,time
from twisted.internet import reactor
from twisted.internet import protocol
from mysqlClass import mysqlClass
from function import *
##################################################
class TCPServer(protocol.Protocol):

    def dataReceived(self, data):
        try:
            self.do(data)
        except Exception, e:
            print e

    def do(self, data):
        handle = self.transport.getHandle()
        DB = mysqlClass()
        kv = json.loads(data)
        if kv.has_key("checkConnection"):
            handle.sendall(data)
        client = kv["client"]
        while True:
            now = getDateTime(-5)
            sql = "select id,dryFlag as flag,DryValue as value from operate_log where dryClient='%s' and dryStatus=0 and dryAddTime>='%s' limit 10" % (client,now)
            dataList = DB.fetchall(sql)
            result = []
            if len(dataList):
                dataIn = []
                for rs in dataList:
                    idString = str(rs["id"])
                    dataIn.append(idString)
                    result.append({"id":idString,"flag":rs["flag"],"value":rs["value"]})
                dataIn = ",".join(dataIn)
                sql = "update operate_log set dryStatus=1 where id in (%s)" % dataIn
                DB.execute(sql)
                result = json.dumps(result)
                handle.sendall(result)
            time.sleep(1)
##################################################
if __name__ == "__main__":
    factory = protocol.ServerFactory()
    factory.protocol = TCPServer
    reactor.listenTCP(9500, factory, interface="0.0.0.0")
    reactor.run()