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bpo-39128: happy eyeballs description #18523

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13c5b05
Hard reset + cherry piciking the changes.
idomic Feb 11, 2020
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📜🤖 Added by blurb_it.
blurb-it[bot] Feb 11, 2020
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Added @vstinner News
idomic Feb 12, 2020
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Update Misc/NEWS.d/next/Library/2020-02-11-13-01-38.bpo-38691.oND8Sk.rst
idomic Feb 13, 2020
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Merge branch 'master' of https://github.com/python/cpython
idomic Feb 15, 2020
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Merge branch 'master' of https://github.com/python/cpython
idomic Feb 16, 2020
9caee6b
[bpo-39128] Added Happy Eyeballs Algorithm description + Reset to master
idomic Feb 16, 2020
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Merge branch 'master' of https://github.com/python/cpython
idomic Feb 16, 2020
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Removed residues
idomic Feb 16, 2020
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Merge branch 'master' into bpo-39128-happy_eyeballs_description
idomic Feb 16, 2020
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11 changes: 11 additions & 0 deletions Doc/library/asyncio-eventloop.rst
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Expand Up @@ -451,6 +451,17 @@ Opening network connections

Added the *happy_eyeballs_delay* and *interleave* parameters.

Happy Eyeballs Algorithm: Success with Dual-Stack Hosts.
When a server's IPv4 path and protocol are working, but the server's
IPv6 path and protocol are not working, a dual-stack client
application experiences significant connection delay compared to an
IPv4-only client. This is undesirable because it causes the dual-
stack client to have a worse user experience. This document
specifies requirements for algorithms that reduce this user-visible
delay and provides an algorithm.

For more information: https://tools.ietf.org/html/rfc6555

.. versionadded:: 3.7

The *ssl_handshake_timeout* parameter.
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