Finer-grained exceptions for the ssl module

[pitrou]

BPO	11183
Nosy	@pitrou, @giampaolo
Files	sslerrors.patch

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2011-10-27.22:03:53.886>
created_at = <Date 2011-02-11.10:08:30.273>
labels = ['type-feature', 'library']
title = 'Finer-grained exceptions for the ssl module'
updated_at = <Date 2011-10-27.22:03:53.885>
user = 'https://github.com/pitrou'

bugs.python.org fields:

activity = <Date 2011-10-27.22:03:53.885>
actor = 'pitrou'
assignee = 'none'
closed = True
closed_date = <Date 2011-10-27.22:03:53.886>
closer = 'pitrou'
components = ['Library (Lib)']
creation = <Date 2011-02-11.10:08:30.273>
creator = 'pitrou'
dependencies = []
files = ['23498']
hgrepos = []
issue_num = 11183
keywords = ['patch']
message_count = 5.0
messages = ['128370', '140292', '146196', '146522', '146523']
nosy_count = 4.0
nosy_names = ['exarkun', 'pitrou', 'giampaolo.rodola', 'python-dev']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue11183'
versions = ['Python 3.3']

[pitrou]

pyOpenSSL (*) has the good idea of defining exception subclasses for the various OpenSSL error codes (ZeroReturnError, WantReadError, etc.). The ssl module could do the same.

(*) http://packages.python.org/pyOpenSSL/openssl-ssl.html

[pitrou]

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.

[pitrou]

Here is a patch. It adds SSLZeroReturnError, SSLWantReadError, SSLWantWriteError, SSLSyscallError and SSLEOFError.

[python-dev]

New changeset 2c4a9c778bb3 by Antoine Pitrou in branch 'default':
Issue bpo-11183: Add finer-grained exceptions to the ssl module, so that
http://hg.python.org/cpython/rev/2c4a9c778bb3

[pitrou]

Committed now.