Python twisted中ConnectionLost异常的处理

我无法处理无连接异常。 我所拥有的简单例子。首先，我要建立到jabber服务器的连接并ping它。我用沃克尔图书馆。然后我将errback添加到发送ping的方法中。在errback中，我处理ConnectionLost错误。之后，我关闭了互联网连接。但我看不出是否处理了这个连接。我关闭应用程序中的连接，并调用所有异常处理程序

平进展顺利

[XmlStream,client] Ping to JID(u'jabber.ru') started at HivemindPingClientProtocol 
[-] SEND: «iq to='jabber.ru' type='get' id='H_3'>/>»
[XmlStream,client] RECV: "/><feature-not-implemented xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/>"

不会调用ConnectionLost的处理程序。“在HivemindXMPPClient关闭的流”在StreamManager中以_disconnected方法打印

[-] Protocol stopped
[-] Protocol closed
[-] Transport stopped
[XmlStream,client] Stream closed at HivemindXMPPClient

所有异常都在关闭流后处理

[XmlStream,client] Failure [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionLost'>: Connection to the other side was lost in a non-clean fashion.
[XmlStream,client] Failure [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionLost'>: Connection to the other side was lost in a non-clean fashion.] 
[XmlStream,client] Connection lost with [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionDone'>: Connection was closed cleanly.] 
[XmlStream,client] Stopping factory <hivemind.network.network_core.HivemindXmlStreamFactory object at 0xa2e904c>> 

协议包括：

clientConnectionFailed(self, connector, reason)
clientConnectionLost(self, connector, reason)

您可以同时覆盖和调用 PingClientProtocol.clientConnectionFailed 和PingClientProtocol.clientConnectionLost

---

假设PingClientProtocol以某种方式从Protocol继承，谢谢，但实际上PingClientProtocol是从XMPPHandler继承的，而不是从Protocol继承的。这些方法属于ClientFactory。我不知道如何执行你说的话。你能举个简单的例子吗？具有类似的方法，因此您可以使用：def connectionLost（reason）：#在这里完成您的工作#然后调用超级方法XMPPHandler.connectionLost（self，reason）

import sys
from twisted.python import log
from twisted.words.protocols import jabber
from twisted.internet.error import ConnectionLost
from wokkel.client import XMPPClient
from wokkel.ping import PingClientProtocol
from twisted.internet.task import LoopingCall

JID = unicode('YOUR@JABBER.ID')
PASSWORD = 'PASSWORD'
INTERVAL = 3

class SpecialPingClientProtocol(PingClientProtocol):

    def __init__(self, entity, interval):
        self.__entity = jabber.jid.internJID(entity)
        self.__interval = interval
        self.__pingLoop = None

    def _onError(self, failure):
        log.msg('Failure %s at %s' % (failure, self.__class__.__name__))
        error = failure.trap(jabber.error.StanzaError, ConnectionLost)
        if error == jabber.error.StanzaError:
            if failure.value.condition == 'feature-not-implemented':
                return None
        elif error == ConnectionLost:
            # Do some beautiful things
            log.msg('Connection is lost. I want to reconnect NOW')
        return failure

    def _sendPing(self):
        defer = self.ping(self.__entity)
        defer.addErrback(self._onError)

    def stopPing(self):
        log.msg('Ping to %s stopped at %s' % (self.__entity, self.__class__.__name__))
        if self.__pingLoop is not None and self.__pingLoop.running:
            self.__pingLoop.stop()
            self.__pingLoop = None

    def startPing(self):
        log.msg('Ping to %s started at %s ' % (self.__entity, self.__class__.__name__))
        self.__pingLoop = LoopingCall(self._sendPing)
        self.__pingLoop.start(self.__interval, now = False)

def main():
    log.startLogging(sys.stdout)
    transport = XMPPClient(jabber.jid.internJID(JID), PASSWORD)
    transport.logTraffic = True
    pinger = SpecialPingClientProtocol(JID, INTERVAL)
    pinger.setHandlerParent(transport)
    transport.startService()
    pinger.startPing()
    reactor.run()

if __name__ == '__main__':
    from twisted.internet import reactor
    main()

clientConnectionFailed(self, connector, reason)
clientConnectionLost(self, connector, reason)