[Python-Dev] SSLSocket.send() for non-blocking sockets

[Nikolaus Rath]

Hello,

I'd like to hear some more opinions on
http://bugs.python.org/issue20951. I think the possible courses of
action are:

1. Document the current behavior.

   This has the drawback that (a) it still remains rather
   counterintuitive, and (b) one still needs extra code to distinguish
   between a zero-return because the write would block, and a
   zero-return because the peer has closed the connection.

   I'm not sure about the best way to do this check. I would probably
   try to run select() on the underlying raw socket. Is there a better
   way?
   
2. Change the behavior immediately, potentially breaking some
   applications that worked around it, but unbreaking others that relied
   on the documented behavior.

3. Deprecate the current behavior, and introduce a transition period
   where the new behavior is controlled by a flag.

   Drawbacks: no direct breakage of anything, but additional complexity
   may indirectly cause bugs.

   
   
Thoughts?


Best,
-Nikolaus

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