Commit 12fd2a49 authored by Luca Toscano's avatar Luca Toscano
Browse files

Merge r1779578, r1779609 from trunk: 

Added more details to mod-proxy-http2's doc

Reworked mod-proxy-http2's documentation after Stefan's suggestions

Submitted by: elukey


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1780044 13f79535-47bb-0310-9956-ffa450edef68
parent 40e8c59c

docs/manual/mod/mod_proxy_http2.xml

+20 −12
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<identifier>proxy_http2_module</identifier>



<summary>

    <p>This module <em>requires</em> the service of <module

    >mod_proxy</module>. It provides the features used for

    proxying HTTP/2 requests. <module>mod_proxy_http2</module>

    supports HTTP/2 only. It does <em>not</em>

    provide any downgrades to HTTP/1.1.</p>

    <p><module>mod_proxy_http2</module>

    supports HTTP/2 only, it does <em>not</em>

    provide any downgrades to HTTP/1.1. This means that the backend

    needs to support HTTP/2 because HTTP/1.1 will not be used instead.</p>



    <p>Thus, in order to get the ability of handling HTTP/2 proxy requests,

    <p>This module <em>requires</em> the service of <module

    >mod_proxy</module>, so in order to get the ability of

    handling HTTP/2 proxy requests,

    <module>mod_proxy</module> and <module>mod_proxy_http2</module>

    have to be present in the server.</p>



    <p><module>mod_proxy_http2</module> works with incoming requests

    over HTTP/1.1 and HTTP/2 requests. If <module>mod_http2</module>

    handles the frontend connection, requests against the same HTTP/2

    backend are sent over a single connection, whenever possible.</p>

    need to be both loaded by the server.</p>



    <p><module>mod_proxy_http2</module> works with incoming fronted requests

    using HTTP/1.1 or HTTP/2. In both cases, requests proxied

    to the same backend are sent over a single TCP connection

    whenever possible (namely when the connection can be re-used).</p>



    <p>Caveat: there will be no attemp to consolidate multiple HTTP/1.1 

    frontend requests (configured to be proxied to the same backend)

    into HTTP/2 streams belonging to the same HTTP/2 request.

    Each HTTP/1.1 frontend request will be proxied to the backend using

    a separate HTTP/2 request (trying to re-use the same TCP connection

    if possible).</p>



    <p>This module relies on <a href="http://nghttp2.org/">libnghttp2</a>

    to provide the core http/2 engine.</p>