Skip to content

Bypass blob URL partitioning for top-level self fetches #1879

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

Open
wants to merge 3 commits into
base: main
Choose a base branch
from
Open

Bypass blob URL partitioning for top-level self fetches #1879

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
6b6ec06
Bypass blob URL partitioning for top-level self fetches
recvfrom Nov 14, 2025
30c735a
Apply suggestions from code review
recvfrom Nov 19, 2025
bf7b579
Address review feedback
recvfrom Nov 19, 2025
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
39 changes: 34 additions & 5 deletions fetch.bs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5363,14 +5363,43 @@ returning a response directly, or allowing the request to proceed by returning n
<li><p>Let <var>isTopLevelNavigation</var> be true if <var>request</var>'s
<a for=request>destination</a> is "<code>document</code>"; otherwise, false.

<li><p>If <var>isTopLevelNavigation</var> is false and <var>requestEnvironment</var> is null,
then return a <a>network error</a>.
<li><p>Let <var>isTopLevelSelfFetch</var> be false.

<li>
<p>If <var>request</var>'s <a for=request>client</a> is non-null:

<ol>
<li><p>Let <var>global</var> be <var>request</var>'s <a for=request>client</a>'s
<a for="environment settings object">global object</a>.

<li>
<p>If all of the following conditions are true:

<ul class=brief>
<li><p><var>global</var> is a {{Window}} object;

<li><p>Let <var>navigationOrEnvironment</var> be the string "<code>navigation</code>" if
<var>isTopLevelNavigation</var> is true; otherwise, <var>requestEnvironment</var>.
<li><p><var>global</var>'s <a for=Window>navigable</a> is not null;

<li><p><var>global</var>'s <a for=Window>navigable</a>'s <a for=navigable>parent</a>
is null; and

<li><p><var>requestEnvironment</var>'s <a for="environment">creation URL</a>
<a for=url>equals</a> <var>request</var>'s <a for=request>current URL</a>,
</ul>

<p>then set <var>isTopLevelSelfFetch</var> to true.

<li><p>Let <var>stringOrEnvironment</var> be <var>requestEnvironment</var>.

<li><p>If <var>isTopLevelNavigation</var> is true, then set <var>stringOrEnvironment</var>
to "<code>navigation</code>".

<li><p>Otherwise, if <var>isTopLevelSelfFetch</var> is true, then set
<var>stringOrEnvironment</var> to "<code>top-level-self-fetch</code>".
</ol>

<li><p>Let <var>blob</var> be the result of <a>obtaining a blob object</a> given
<var>blobURLEntry</var> and <var>navigationOrEnvironment</var>.
<var>blobURLEntry</var> and <var>stringOrEnvironment</var>.
Copy link
Member

@annevk annevk Nov 20, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Just realized that stringOrEnvironment is undefined when request's client is null.


<li><p>If <var>blob</var> is not a {{Blob}} object, then return a <a>network error</a>.

Expand Down