Antoine Pitrou <pit...@free.fr> added the comment:

Note: the only significant changes in the ssl module on branch 2.7 have been 
742d73a99425 and 7f99ac53014a.

> Protecting my "reads" retrying when getting this exception does the
> trick, but now my code is convoluted and never before I had to manage
> this directly. This worked fine in 2.7.1. Previously Python seemed to
> do the retry itself.

I'm sure it didn't. I think you were just lucky that you had enough data to 
satisfy the read. With non-blocking code, by definition you have to be prepared 
to retry. That's especially true when using SSL, because having bytes available 
on the socket (as signalled by select()) doesn't mean there's anything to read 
on the SSL layer (for example, the bytes may not form a complete SSL frame).

----------

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue12343>
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