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[3.8] bpo-39128: Added algorithm description (GH-18624) #18649

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Feb 24, 2020
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[3.8] bpo-39128: Added algorithm description (GH-18624) #18649

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11 changes: 11 additions & 0 deletions Doc/library/asyncio-eventloop.rst
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Expand Up @@ -439,6 +439,17 @@ 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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