SSL module returns incorrect error codes on Windows

[zooba]

BPO	31400
Nosy	@tiran, @alex, @zooba, @dstufft
PRs	bpo-31400: Improve SSL error handling on Windows #3463 [3.6] bpo-31400: Improve SSL error handling on Windows (GH-3463) #3466

^{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 = 'https://github.com/zooba'
closed_at = <Date 2017-09-11.10:25:24.698>
created_at = <Date 2017-09-08.21:16:30.722>
labels = ['expert-SSL', 'type-bug', '3.7']
title = 'SSL module returns incorrect error codes on Windows'
updated_at = <Date 2017-09-11.10:25:24.696>
user = 'https://github.com/zooba'

bugs.python.org fields:

activity = <Date 2017-09-11.10:25:24.696>
actor = 'christian.heimes'
assignee = 'steve.dower'
closed = True
closed_date = <Date 2017-09-11.10:25:24.698>
closer = 'christian.heimes'
components = ['SSL']
creation = <Date 2017-09-08.21:16:30.722>
creator = 'steve.dower'
dependencies = []
files = []
hgrepos = []
issue_num = 31400
keywords = ['patch']
message_count = 4.0
messages = ['301733', '301743', '301775', '301870']
nosy_count = 5.0
nosy_names = ['janssen', 'christian.heimes', 'alex', 'steve.dower', 'dstufft']
pr_nums = ['3463', '3466']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue31400'
versions = ['Python 3.6', 'Python 3.7']

[zooba]

Because we wait so long between errors occurring and being reported, information about the Windows error code (WSAGetLastError) has already been lost.

We should capture all the info sooner.

[tiran]

New changeset e6eb48c by Christian Heimes (Steve Dower) in branch 'master':
bpo-31400: Improve SSL error handling on Windows (bpo-3463)
e6eb48c

[tiran]

New changeset 16f16db by Christian Heimes in branch '3.6':
[3.6] bpo-31400: Improve SSL error handling on Windows (GH-3463) (bpo-3466)
16f16db

[tiran]

Patch has landed in 3.6 and master, thanks!