[Twisted-web] Exceptions in twisted.web.client

[exarkun at twistedmatrix.com]

On 7 Oct, 03:33 am, chris.were at gmail.com wrote:
>Hi,
>I have an application that fetches many urls, following any redirects. 
>Every
>so often I get a variety of unhandled exceptions from within
>twisted.web.client (see snippet at the bottom of email).
>
>My code has an addErrback attached to the deferred and a try/except 
>around
>the getPage() call, neither of which get invoked.
>
>Are these exceptions that web.client needs to catch internally and then 
>call
>self.deferred.errback so that my error handler will receive it?
>
>If not, how can I catch them?

This does look like a bug in twisted.web.client.  Any error with the 
request should result in the Deferred being fired so that the caller can 
react to the problem.

Jean-Paul