[Twisted-Python] Catching error in protocol.ReconnectingClientFactory
dynamicgl at gmail.com
Thu Jun 14 08:34:41 EDT 2012
On Thu, Jun 14, 2012 at 7:38 PM, Martin <martin at webscio.net> wrote:
> Hi, thanks for your reply.
> Indeed, the ReconnectingClientFactory is being sent the Failure object to
> def clientConnectionLost(self, connector, reason):
> log.msg('Lost connection. Reason: %s' % reason)
> connector, reason)
> where "reason" is the Failure object that is "unhandled". is there
> anything I could do to it there to make it handled?
> Also, the documentation in
> http://twistedmatrix.com/documents/current/core/howto/defer.html says
> that one can do d.addErrback(err.log) to deal with unhandled errors, but
> what is d?
> In general, I'm not doing anything special.. I'm creating a
> ReconnectingClientFactory and connecting it to a server..
> f = MyReconnectingClientFactory(..)
> reactor.connectSSL(url, port, f, ssl.ClientContextFactory())
> Basically it. Any thoughts? Thanks a lot!
> > On Jun 11, 2012, at 8:01 AM, Martin wrote:
> >> Hi there,
> >> I've been looking around for a solution for several hours now, and maybe
> >> I'm just missing something..
> >> I've a factory that implements protocol.ReconnectingClientFactory which
> >> works just fine, however, whenever the program ends running, I get a
> >> bunch of Unhandled error in Deferred messages in my log for each
> >> disconnection that occurred during runtime, such as Failure:
> >> twisted.internet.error.ConnectionLost: ...
> >> Is there any way I could somehow "handle" these during runtime, so that
> >> my log wouldn't be spammed with this at the end.. (or avoid it being
> >> spammed somehow..)
> > These messages are coming from some code which is issuing Deferreds, not
> from ReconnectingClientFactory. You need to add an errback to those
> Deferreds in your application code. There's no way to write a catch-all,
> just like there's no way to write a catch-all that can stop exceptions from
> being raised in basic Python.
> > I can't say more without a code example, preferably a<http://sscce.org/
> > -glyph
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d refers to a defer object.
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