Skip to content

Define the processing model for dns-prefetch #9029

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 4 commits into from
Mar 16, 2023
Merged

Define the processing model for dns-prefetch #9029

Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
bf31527
Define the processing model for dns-prefetch
noamr Mar 15, 2023
e35dc20
nit
noamr Mar 16, 2023
dc3d788
nit
noamr Mar 16, 2023
a918896
nit
noamr Mar 16, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
41 changes: 38 additions & 3 deletions source
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2577,6 +2577,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
<li><dfn data-x-href="https://fetch.spec.whatwg.org/#determine-the-network-partition-key">determine the network partition key</dfn></li>
<li><dfn data-x-href="https://fetch.spec.whatwg.org/#extract-full-timing-info">extract full timing info</dfn></li>
<li><dfn data-x-href="https://fetch.spec.whatwg.org/#byte-sequence-as-a-body">as a body</dfn></li>
<li><dfn data-x-href="https://fetch.spec.whatwg.org/#resolve-an-origin">resolve an origin</dfn></li>
<li>
<dfn data-x="concept-response"
data-x-href="https://fetch.spec.whatwg.org/#concept-response">response</dfn> and its
Expand Down Expand Up @@ -25763,9 +25764,43 @@ document.body.appendChild(wbr);</code></pre>
<p>There is no default type for resources given by the <code
data-x="rel-dns-prefetch">dns-prefetch</code> keyword.</p>

<p class="XXX">The processing model for <code data-x="rel-dns-prefetch">dns-prefetch</code> needs
to be properly specified. Tracked in <a
href="https://github.com/whatwg/html/issues/9015">issue #9015</a>.</p>
<p>The appropriate times to <span data-x="fetch and process the linked resource">fetch and
process</span> this type of link are:</p>

<ul>
<li><p>When the <span>external resource link</span> is created on a <code>link</code> element
that is already <span>browsing-context connected</span>.</p></li>
<!-- e.g. rel="" changed, href="" set... -->

<li><p>When the <span>external resource link</span>'s <code>link</code> element <span>becomes
browsing-context connected</span>.</p></li>

<li><p>When the <code data-x="attr-link-href">href</code> attribute of the <code>link</code>
element of an <span>external resource link</span> that is already <span>browsing-context
connected</span> is changed.</p></li>
</ul>

<p>The <span>fetch and process the linked resource</span> steps for this type of linked resource,
given a <code>link</code> element <var>el</var>, are:

<ol>
<li><p><span data-x="parse a URL">Parse</span> <var>el</var>'s
<code data-x="attr-link-href">href</code> attribute relative to <var>el</var>'s
<span>node document</span> and let <var>url</var> be the <span>resulting URL record</span>. If
this fails, return.</p></li>

<li><p>Let <var>partitionKey</var> be the result of <span data-x="determine the network
partition key">determining the network partition key</span> given <var>el</var>'s
<span>node document</span>'s <span>relevant settings object</span>.</p></li>

<li>
<p>The user agent should <span>resolve an origin</span> given <var>partitionKey</var> and
<var>url</var>'s <span data-x="concept-url-origin">origin</span>.</p>

<p class="note">As the results of this algorithm can be cached, future fetches could be
faster.</p>
</li>
</ol>


<h5>Link type "<dfn attr-value for="a/rel,area/rel,form/rel"><code
Expand Down