[Twisted-Python] are there known ssl/threading/socket issues with httplib2/httplib and Twisted ?
Andrew Bennetts
andrew at bemusement.org
Wed Sep 17 19:44:11 MDT 2014
Jonathan Vanasco wrote:
>
> Background:
> I'm using a 3rd party API client, which uses httplib2 in the internals.
> ( the google-plus api )
> I'm placing this blocking code within a DeferredList, that runs within a
> twisted.enterprise.adbapi.ConnectionPool.runInteraction
>
> In my initial tests, everything worked fine -- but I was only making a single
> GET/POST, as I kept the size of the DeferredList to 1 while I worked on the
> code.
>
> As soon as I increased the limit and had 2 GET/POST events firing off at the
> same time, I started getting a ssl/socket error ( httplib2 > httplib >
> socket > ssl ).
What's the error?
> It works fine in twisted if I make simultaneous requests otherwise (using
> twisted or the `requests` package). this seems to be tied to how
> httplib2/httplib is running within twisted.
There shouldn't be anything special about httplib2/httplib “within twisted”.
Unless httplib2 is mucking with global socket defaults or something (and I doubt
it does) I wouldn't expect any interaction between the two at all. It's no
different to using httplib2 in a thread without Twisted.
-Andrew.
>
> Has anyone experienced this before? if so, do you know if there is a
> workaround?
>
> The easiest fix, is probably for me to write a new ApiClient tomorrow for the
> methods I need. I'd just like to avoid that if possible
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