aktuelle.kurse/old_m239/unterlagen/40 - Protokolle/Protokoll HTTP/80 - HTTP2
Harald G. Mueller a104ced006 muh
2022-07-01 01:11:19 +02:00

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<title>HTTP/2</title>
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<a class="navbar-brand" href="/">HTTP/2</a>
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<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Specifications<b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="https://httpwg.github.io/specs/rfc7540.html">RFC7540: HTTP/2</a></li>
<li><a href="https://httpwg.github.io/specs/rfc7541.html">RFC7541: HPACK</a></li>
</ul>
</li>
<li><a href="https://github.com/http2/http2-spec/wiki/Implementations">Implementations</a></li>
<li><a href="/faq/">FAQ</a></li>
<li><a href="https://twitter.com/http_2">
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<li><a href="https://httpwg.github.io/">IETF HTTP WG</a></li>
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<p>This is the home page for HTTP/2, a major revision of
the Web's protocol. It is maintained by the <a href="https://httpwg.github.io/">IETF HTTP Working
Group</a>.</p>
</div>
<div class="col-lg-2"></div>
</div>
</div>
<h2 id="what-is-http2">What is HTTP/2?</h2>
<p>HTTP/2 is a replacement for how HTTP is expressed “on the wire.” It is
<strong>not</strong> a ground-up rewrite of the protocol; HTTP methods, status codes and
semantics are the same, and it should be possible to use the same APIs as
HTTP/1.x (possibly with some small additions) to represent the protocol.</p>
<p>The focus of the protocol is on performance; specifically, end-user perceived
latency, network and server resource usage. One major goal is to allow the use
of a single connection from browsers to a Web site.</p>
<p>The basis of the work was
<a href="http://tools.ietf.org/html/draft-mbelshe-httpbis-spdy-00">SPDY</a>, but HTTP/2
has evolved to take the communitys input into account, incorporating several
improvements in the process.</p>
<p>See <a href="http://datatracker.ietf.org/wg/httpbis/charter/">our charter</a> for more
details of the scope of the work, as well as our <a href="/faq/">Frequently Asked
Questions</a>.</p>
<p><em>See also <a href="https://github.com/http2jp">HTTP/2 JP</a>, maintained by the Japanese HTTP/2 community.</em></p>
<h2 id="specifications">Specifications</h2>
<p>HTTP/2 is comprised of two specifications:</p>
<ul>
<li>Hypertext Transfer Protocol version 2 - <a href="https://httpwg.github.io/specs/rfc7540.html">RFC7540</a></li>
<li>HPACK - Header Compression for HTTP/2 - <a href="https://httpwg.github.io/specs/rfc7541.html">RFC7541</a></li>
</ul>
<h2 id="implementations">Implementations</h2>
<p>We track <a href="https://github.com/http2/http2-spec/wiki/Implementations">known
implementations</a> of
HTTP/2 on our wiki.</p>
</div>
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