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Update :protocol to webtransport-h3 for WebTransport over HTTP/3 #1930

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Update :protocol to webtransport-h3 for WebTransport over HTTP/3 #1930

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5f4965e
Set :protocol to webtransport-h3 for WebTransport over HTTP/3
jan-ivar May 30, 2026
3fff39e
Note "webtransport" is for H2, "webtransport-h3" for H3
jan-ivar Jun 1, 2026
6459f41
Assert method and pseudo-header
jan-ivar Jun 1, 2026
eb06c09
nits
annevk Jun 26, 2026
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7 changes: 7 additions & 0 deletions fetch.bs
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Expand Up @@ -6656,6 +6656,13 @@ optional boolean <var>forceNewConnection</var> (default false), run these steps:
to the <a for=/>coarsened shared current time</a> given <var>fetchParams</var>'s
<a for="fetch params">cross-origin isolated capability</a>.

<li>
<p>If <var>request</var>'s <a for=request>mode</a> is "<code>webtransport</code>",
<var>connection</var> is an HTTP/3 connection, and the "<code>:protocol</code>"
pseudo-header associated with <var>request</var>'s <a for=request>method</a> is
"<code>webtransport</code>", then set the "<code>:protocol</code>" pseudo-header to
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"<code>webtransport-h3</code>". [[!WEBTRANSPORT-HTTP3]]

<li>
<p>Set <var>response</var> to the result of making an HTTP request over <var>connection</var>
using <var>request</var> with the following caveats:
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