Implement Happy Eyeball in asyncio

[twisteroidambassador]

BPO	33530
Nosy	@njsmith, @asvetlov, @1st1, @twisteroidambassador, @miss-islington
PRs	bpo-33530: Implement Happy Eyeballs in asyncio. #7097 bpo-33530: Implement Happy Eyeballs in asyncio, v2 #7237

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

Show more details

GitHub fields:

assignee = None
closed_at = <Date 2019-05-05.11:15:57.577>
created_at = <Date 2018-05-16.02:56:28.513>
labels = ['type-feature', '3.8', 'expert-asyncio']
title = 'Implement Happy Eyeball in asyncio'
updated_at = <Date 2019-05-05.11:15:57.576>
user = 'https://github.com/twisteroidambassador'

bugs.python.org fields:

activity = <Date 2019-05-05.11:15:57.576>
actor = 'asvetlov'
assignee = 'none'
closed = True
closed_date = <Date 2019-05-05.11:15:57.577>
closer = 'asvetlov'
components = ['asyncio']
creation = <Date 2018-05-16.02:56:28.513>
creator = 'twisteroid ambassador'
dependencies = []
files = []
hgrepos = []
issue_num = 33530
keywords = ['patch']
message_count = 2.0
messages = ['316757', '341427']
nosy_count = 6.0
nosy_names = ['njs', 'asvetlov', 'Yury.Selivanov', 'yselivanov', 'twisteroid ambassador', 'miss-islington']
pr_nums = ['7097', '7237']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue33530'
versions = ['Python 3.8']

[twisteroidambassador]

Add a Happy Eyeballs implementation to asyncio, based on work in https://github.com/twisteroidambassador/async_stagger .

Current plans:

• Add 2 keyword arguments to loop.create_connection and asyncio.open_connection.

  • delay: Optional[float] = None. None disables happy eyeballs. A number >= 0 means the delay between starting new connections.

  • interleave: int = 1. Controls reordering of resolved IP addresses by address family.

• Optionally, expose the happy eyeballs scheduling helper function.

  • It's currently called "staggered_race()". Suggestions for a better name welcome.

  • Should it belong to base_events.py, some other existing file or a new file?

[miss-islington]

New changeset 88f07a8 by Miss Islington (bot) (twisteroid ambassador) in branch 'master':
bpo-33530: Implement Happy Eyeballs in asyncio, v2 (GH-7237)
88f07a8