[issue11183] Finer-grained exceptions for the ssl module

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

Note: the ERR_GET_REASON() macro helps get a more precise explanation of an error. We could add a reason attribute to raised exceptions, and also provide a mnemonic-integer mapping.

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stage:  -> needs patch

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<http://bugs.python.org/issue11183>
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