Skip sending/receiving after SSL transport closing

[asvetlov]

BPO	33037
Nosy	@asvetlov, @1st1
PRs	bpo-33037: Skip sending/receiving after SSL transport closing #6044 [3.7] bpo-33037: Skip sending/receiving after SSL transport closing (GH-6044) #6057 [3.6] bpo-33037: Skip sending/receiving after SSL transport closing (GH-6044) #6058

^{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 2018-05-21.08:58:09.830>
created_at = <Date 2018-03-09.21:00:42.467>
labels = ['3.8', '3.7', 'library', 'expert-asyncio']
title = 'Skip sending/receiving after SSL transport closing'
updated_at = <Date 2018-05-21.08:58:09.829>
user = 'https://github.com/asvetlov'

bugs.python.org fields:

activity = <Date 2018-05-21.08:58:09.829>
actor = 'asvetlov'
assignee = 'none'
closed = True
closed_date = <Date 2018-05-21.08:58:09.830>
closer = 'asvetlov'
components = ['Library (Lib)', 'asyncio']
creation = <Date 2018-03-09.21:00:42.467>
creator = 'asvetlov'
dependencies = []
files = []
hgrepos = []
issue_num = 33037
keywords = ['patch']
message_count = 4.0
messages = ['313505', '313535', '313541', '313547']
nosy_count = 2.0
nosy_names = ['asvetlov', 'yselivanov']
pr_nums = ['6044', '6057', '6058']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue33037'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8']

[asvetlov]

Now asyncio raises exceptions like "None type has no method feed_appdata" because self._sslpipe is set to None on closing.

See aio-libs/aiohttp#2546 for more details.

IMHO the fix should just skip accessing self._sslpipe methods if the pipe was deleted.

[asvetlov]

New changeset 5e80a71 by Andrew Svetlov in branch 'master':
bpo-33037: Skip sending/receiving after SSL transport closing (GH-6044)
5e80a71

[asvetlov]

New changeset bf0d116 by Andrew Svetlov (Miss Islington (bot)) in branch '3.7':
bpo-33037: Skip sending/receiving after SSL transport closing (GH-6044) (GH-6057)
bf0d116

[asvetlov]

New changeset 017e9fd by Andrew Svetlov in branch '3.6':
[3.6] bpo-33037: Skip sending/receiving after SSL transport closing (GH-6044) (GH-6058)
017e9fd