RFC 8305 on Happy Eyeballs Version 2: Better Connectivity Using Concurrency
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Subject: RFC 8305 on Happy Eyeballs Version 2: Better Connectivity Using Concurrency
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A new Request for Comments is now available in online RFC libraries.
RFC 8305
Title: Happy Eyeballs Version 2: Better
Connectivity Using Concurrency
Author: D. Schinazi, T. Pauly
Status: Standards Track
Stream: IETF
Date: December 2017
Mailbox: dschinazi@apple.com,
tpauly@apple.com
Pages: 15
Characters: 32917
Obsoletes: RFC 6555
I-D Tag: draft-ietf-v6ops-rfc6555bis-07.txt
URL: https://www.rfc-editor.org/info/rfc8305
DOI: 10.17487/RFC8305
Many communication protocols operating over the modern Internet use
hostnames. These often resolve to multiple IP addresses, each of
which may have different performance and connectivity
characteristics. Since specific addresses or address families (IPv4
or IPv6) may be blocked, broken, or sub-optimal on a network, clients
that attempt multiple connections in parallel have a chance of
establishing a connection more quickly. This document specifies
requirements for algorithms that reduce this user-visible delay and
provides an example algorithm, referred to as "Happy Eyeballs". This
document obsoletes the original algorithm description in RFC 6555.
This document is a product of the IPv6 Operations Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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