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draft-ietf-quic-transport.html
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<!DOCTYPE html>
<html lang="en" class="Internet-Draft">
<head>
<meta charset="utf-8">
<meta content="Common,Latin" name="scripts">
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<title>QUIC: A UDP-Based Multiplexed and Secure Transport</title>
<meta content="Jana Iyengar" name="author">
<meta content="Martin Thomson" name="author">
<meta content="
This document defines the core of the QUIC transport protocol. QUIC provides
applications with flow-controlled streams for structured communication,
low-latency connection establishment, and network path migration. QUIC includes
security measures that ensure confidentiality, integrity, and availability in a
range of deployment circumstances. Accompanying documents describe the
integration of TLS for key negotiation, loss detection, and an exemplary
congestion control algorithm.
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<body>
<table class="ears">
<thead><tr>
<td class="left">Internet-Draft</td>
<td class="center">QUIC Transport Protocol</td>
<td class="right">January 2021</td>
</tr></thead>
<tfoot><tr>
<td class="left">Iyengar & Thomson</td>
<td class="center">Expires 11 July 2021</td>
<td class="right">[Page]</td>
</tr></tfoot>
</table>
<div id="external-metadata" class="document-information"></div>
<div id="internal-metadata" class="document-information">
<dl id="identifiers">
<dt class="label-workgroup">Workgroup:</dt>
<dd class="workgroup">QUIC</dd>
<dt class="label-internet-draft">Internet-Draft:</dt>
<dd class="internet-draft">draft-ietf-quic-transport</dd>
<dt class="label-published">Published:</dt>
<dd class="published">
<time datetime="2021-01-07" class="published">7 January 2021</time>
</dd>
<dt class="label-intended-status">Intended Status:</dt>
<dd class="intended-status">Standards Track</dd>
<dt class="label-expires">Expires:</dt>
<dd class="expires"><time datetime="2021-07-11">11 July 2021</time></dd>
<dt class="label-authors">Authors:</dt>
<dd class="authors">
<div class="author">
<div class="author-name">J. Iyengar, <span class="editor">Ed.</span>
</div>
<div class="org">Fastly</div>
</div>
<div class="author">
<div class="author-name">M. Thomson, <span class="editor">Ed.</span>
</div>
<div class="org">Mozilla</div>
</div>
</dd>
</dl>
</div>
<h1 id="title">QUIC: A UDP-Based Multiplexed and Secure Transport</h1>
<section id="section-abstract">
<h2 id="abstract"><a href="#abstract" class="selfRef">Abstract</a></h2>
<p id="section-abstract-1">This document defines the core of the QUIC transport protocol. QUIC provides
applications with flow-controlled streams for structured communication,
low-latency connection establishment, and network path migration. QUIC includes
security measures that ensure confidentiality, integrity, and availability in a
range of deployment circumstances. Accompanying documents describe the
integration of TLS for key negotiation, loss detection, and an exemplary
congestion control algorithm.<a href="#section-abstract-1" class="pilcrow">¶</a></p>
</section>
<section class="note" id="section-note.1">
<h2 id="name-do-not-deploy-this-version-">
<a href="#name-do-not-deploy-this-version-" class="section-name selfRef">DO NOT DEPLOY THIS VERSION OF QUIC</a>
</h2>
<p id="section-note.1-1">DO NOT DEPLOY THIS VERSION OF QUIC UNTIL IT IS IN AN RFC. This version is still
a work in progress. For trial deployments, please use earlier versions.<a href="#section-note.1-1" class="pilcrow">¶</a></p>
</section>
<section class="note" id="section-note.2">
<h2 id="name-note-to-readers">
<a href="#name-note-to-readers" class="section-name selfRef">Note to Readers</a>
</h2>
<p id="section-note.2-1">Discussion of this draft takes place on the QUIC working group mailing list
(<a href="mailto:quic@ietf.org">quic@ietf.org</a>), which is archived at
<span><a href="https://mailarchive.ietf.org/arch/search/?email_list=quic">https://mailarchive.ietf.org/arch/search/?email_list=quic</a></span><a href="#section-note.2-1" class="pilcrow">¶</a></p>
<p id="section-note.2-2">Working Group information can be found at <span><a href="https://github.com/quicwg">https://github.com/quicwg</a></span>; source
code and issues list for this draft can be found at
<span><a href="https://github.com/quicwg/base-drafts/labels/-transport">https://github.com/quicwg/base-drafts/labels/-transport</a></span>.<a href="#section-note.2-2" class="pilcrow">¶</a></p>
</section>
<div id="status-of-memo">
<section id="section-boilerplate.1">
<h2 id="name-status-of-this-memo">
<a href="#name-status-of-this-memo" class="section-name selfRef">Status of This Memo</a>
</h2>
<p id="section-boilerplate.1-1">
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.<a href="#section-boilerplate.1-1" class="pilcrow">¶</a></p>
<p id="section-boilerplate.1-2">
Internet-Drafts are working documents of the Internet Engineering Task
Force (IETF). Note that other groups may also distribute working
documents as Internet-Drafts. The list of current Internet-Drafts is
at <span><a href="https://datatracker.ietf.org/drafts/current/">https://datatracker.ietf.org/drafts/current/</a></span>.<a href="#section-boilerplate.1-2" class="pilcrow">¶</a></p>
<p id="section-boilerplate.1-3">
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."<a href="#section-boilerplate.1-3" class="pilcrow">¶</a></p>
<p id="section-boilerplate.1-4">
This Internet-Draft will expire on 11 July 2021.<a href="#section-boilerplate.1-4" class="pilcrow">¶</a></p>
</section>
</div>
<div id="copyright">
<section id="section-boilerplate.2">
<h2 id="name-copyright-notice">
<a href="#name-copyright-notice" class="section-name selfRef">Copyright Notice</a>
</h2>
<p id="section-boilerplate.2-1">
Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved.<a href="#section-boilerplate.2-1" class="pilcrow">¶</a></p>
<p id="section-boilerplate.2-2">
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(<span><a href="https://trustee.ietf.org/license-info">https://trustee.ietf.org/license-info</a></span>) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with
respect to this document. Code Components extracted from this
document must include Simplified BSD License text as described in
Section 4.e of the Trust Legal Provisions and are provided without
warranty as described in the Simplified BSD License.<a href="#section-boilerplate.2-2" class="pilcrow">¶</a></p>
</section>
</div>
<div id="toc">
<section id="section-toc.1">
<a href="#" onclick="scroll(0,0)" class="toplink">▲</a><h2 id="name-table-of-contents">
<a href="#name-table-of-contents" class="section-name selfRef">Table of Contents</a>
</h2>
<nav class="toc"><ul class="toc compact ulEmpty">
<li class="toc compact ulEmpty" id="section-toc.1-1.1">
<p id="section-toc.1-1.1.1"><a href="#section-1" class="xref">1</a>. <a href="#name-overview" class="xref">Overview</a><a href="#section-toc.1-1.1.1" class="pilcrow">¶</a></p>
<ul class="toc compact ulEmpty">
<li class="toc compact ulEmpty" id="section-toc.1-1.1.2.1">
<p id="section-toc.1-1.1.2.1.1" class="keepWithNext"><a href="#section-1.1" class="xref">1.1</a>. <a href="#name-document-structure" class="xref">Document Structure</a><a href="#section-toc.1-1.1.2.1.1" class="pilcrow">¶</a></p>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.1.2.2">
<p id="section-toc.1-1.1.2.2.1" class="keepWithNext"><a href="#section-1.2" class="xref">1.2</a>. <a href="#name-terms-and-definitions" class="xref">Terms and Definitions</a><a href="#section-toc.1-1.1.2.2.1" class="pilcrow">¶</a></p>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.1.2.3">
<p id="section-toc.1-1.1.2.3.1" class="keepWithNext"><a href="#section-1.3" class="xref">1.3</a>. <a href="#name-notational-conventions" class="xref">Notational Conventions</a><a href="#section-toc.1-1.1.2.3.1" class="pilcrow">¶</a></p>
</li>
</ul>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.2">
<p id="section-toc.1-1.2.1"><a href="#section-2" class="xref">2</a>. <a href="#name-streams" class="xref">Streams</a><a href="#section-toc.1-1.2.1" class="pilcrow">¶</a></p>
<ul class="toc compact ulEmpty">
<li class="toc compact ulEmpty" id="section-toc.1-1.2.2.1">
<p id="section-toc.1-1.2.2.1.1"><a href="#section-2.1" class="xref">2.1</a>. <a href="#name-stream-types-and-identifier" class="xref">Stream Types and Identifiers</a><a href="#section-toc.1-1.2.2.1.1" class="pilcrow">¶</a></p>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.2.2.2">
<p id="section-toc.1-1.2.2.2.1"><a href="#section-2.2" class="xref">2.2</a>. <a href="#name-sending-and-receiving-data" class="xref">Sending and Receiving Data</a><a href="#section-toc.1-1.2.2.2.1" class="pilcrow">¶</a></p>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.2.2.3">
<p id="section-toc.1-1.2.2.3.1"><a href="#section-2.3" class="xref">2.3</a>. <a href="#name-stream-prioritization" class="xref">Stream Prioritization</a><a href="#section-toc.1-1.2.2.3.1" class="pilcrow">¶</a></p>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.2.2.4">
<p id="section-toc.1-1.2.2.4.1"><a href="#section-2.4" class="xref">2.4</a>. <a href="#name-operations-on-streams" class="xref">Operations on Streams</a><a href="#section-toc.1-1.2.2.4.1" class="pilcrow">¶</a></p>
</li>
</ul>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.3">
<p id="section-toc.1-1.3.1"><a href="#section-3" class="xref">3</a>. <a href="#name-stream-states" class="xref">Stream States</a><a href="#section-toc.1-1.3.1" class="pilcrow">¶</a></p>
<ul class="toc compact ulEmpty">
<li class="toc compact ulEmpty" id="section-toc.1-1.3.2.1">
<p id="section-toc.1-1.3.2.1.1"><a href="#section-3.1" class="xref">3.1</a>. <a href="#name-sending-stream-states" class="xref">Sending Stream States</a><a href="#section-toc.1-1.3.2.1.1" class="pilcrow">¶</a></p>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.3.2.2">
<p id="section-toc.1-1.3.2.2.1"><a href="#section-3.2" class="xref">3.2</a>. <a href="#name-receiving-stream-states" class="xref">Receiving Stream States</a><a href="#section-toc.1-1.3.2.2.1" class="pilcrow">¶</a></p>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.3.2.3">
<p id="section-toc.1-1.3.2.3.1"><a href="#section-3.3" class="xref">3.3</a>. <a href="#name-permitted-frame-types" class="xref">Permitted Frame Types</a><a href="#section-toc.1-1.3.2.3.1" class="pilcrow">¶</a></p>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.3.2.4">
<p id="section-toc.1-1.3.2.4.1"><a href="#section-3.4" class="xref">3.4</a>. <a href="#name-bidirectional-stream-states" class="xref">Bidirectional Stream States</a><a href="#section-toc.1-1.3.2.4.1" class="pilcrow">¶</a></p>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.3.2.5">
<p id="section-toc.1-1.3.2.5.1"><a href="#section-3.5" class="xref">3.5</a>. <a href="#name-solicited-state-transitions" class="xref">Solicited State Transitions</a><a href="#section-toc.1-1.3.2.5.1" class="pilcrow">¶</a></p>
</li>
</ul>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.4">
<p id="section-toc.1-1.4.1"><a href="#section-4" class="xref">4</a>. <a href="#name-flow-control" class="xref">Flow Control</a><a href="#section-toc.1-1.4.1" class="pilcrow">¶</a></p>
<ul class="toc compact ulEmpty">
<li class="toc compact ulEmpty" id="section-toc.1-1.4.2.1">
<p id="section-toc.1-1.4.2.1.1"><a href="#section-4.1" class="xref">4.1</a>. <a href="#name-data-flow-control" class="xref">Data Flow Control</a><a href="#section-toc.1-1.4.2.1.1" class="pilcrow">¶</a></p>
</li>
<li class="toc compact ulEmpty" id="section-toc.1-1.4.2.2">