[issue21430] Document ssl.pending()

[Bas Wijnen]

Bas Wijnen added the comment:

After trying to use this, I think ssl.pending is a valuable function that should be supported and documented.

My use case is a half-synchronous system, where I want most calls to block but asynchronous events are possible as well.  Switching the socket between blocking and non-blocking all the time is annoying and results in code that is harder to read.

With ssl.pending, I can simply repeat the read as long as data is pending.  Setting my buffer size high might technically work, but that seems too fragile.  I don't like using an undocumented function either, but I'm hoping that gets fixed. ;-)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21430>
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