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Block 416 alongside 206 #1907

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Merged
annevk merged 1 commit into from
Jan 20, 2026
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Block 416 alongside 206 #1907

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16 changes: 10 additions & 6 deletions fetch.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -1465,6 +1465,8 @@ worked on in <a href=https://github.com/whatwg/fetch/issues/1156>issue #1156</a>

<p>An <dfn export>ok status</dfn> is a <a for=/>status</a> in the range 200 to 299, inclusive.

<p>A <dfn export>range status</dfn> is a <a for=/>status</a> that is 206 or 416.

<p>A <dfn export>redirect status</dfn> is a <a for=/>status</a> that is 301, 302, 303, 307, or 308.


Expand Down Expand Up @@ -5017,15 +5019,16 @@ steps:

<li>
<p>If <var>response</var>'s <a for=response>type</a> is "<code>opaque</code>",
<var>internalResponse</var>'s <a for=response>status</a> is 206, <var>internalResponse</var>'s
<a for=response>range-requested flag</a> is set, and <var>request</var>'s
<a for=request>header list</a> <a for="header list">does not contain</a> `<code>Range</code>`,
then set <var>response</var> and <var>internalResponse</var> to a <a>network error</a>.
<var>internalResponse</var>'s <a for=response>status</a> is a <a>range status</a>,
<var>internalResponse</var>'s <a for=response>range-requested flag</a> is set, and
<var>request</var>'s <a for=request>header list</a> <a for="header list">does not contain</a>
`<code>Range</code>`, then set <var>response</var> and <var>internalResponse</var> to a
<a>network error</a>.

<div class=note>
<p>Traditionally, APIs accept a ranged response even if a range was not requested. This prevents
a partial response from an earlier ranged request being provided to an API that did not make a
range request.
a partial response or a range not satisfiable response from an earlier ranged request being
provided to an API that did not make a range request.

<details>
<summary>Further details</summary>
Expand Down Expand Up @@ -10328,6 +10331,7 @@ Wayne Carr,
Xabier Rodríguez,
Yehuda Katz,
Yoav Weiss,
Yoshisato Yanagisawa<!-- yoshisatoyanagisawa; GitHub -->,
Youenn Fablet<!-- youennf; GitHub -->,
Yoichi Osato,
平野裕 (Yutaka Hirano), and
Expand Down