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Add WebSocket context cleanup steps to support BFCache #12349

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Add WebSocket context cleanup steps to support BFCache #12349

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0b91cd9
Introduce WebSocket context cleanup steps
llannasatoll Apr 9, 2026
a4d2ee0
run the cleanup steps instead of failing the connection
llannasatoll Apr 13, 2026
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13 changes: 8 additions & 5 deletions source
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Original file line number Diff line number Diff line change
Expand Up @@ -4738,6 +4738,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
<ul class="brief">
<li><dfn data-x-href="https://websockets.spec.whatwg.org/#websocket"><code>WebSocket</code></dfn></li>
<li><dfn data-x-href="https://websockets.spec.whatwg.org/#make-disappear" for="WebSocket">make disappear</dfn></li>
<li><dfn data-x="websocket-context-cleanup-steps" data-x-href="https://websockets.spec.whatwg.org/#context-cleanup-steps" for="WebSocket">context cleanup steps</dfn></li>
</ul>
</dd>

Expand Down Expand Up @@ -113126,11 +113127,13 @@ new PaymentRequest(&hellip;); // Allowed to use

<li>
<p>For each <code>WebSocket</code> object <var>webSocket</var> whose <span>relevant global
object</span> is <var>window</var>, <span>make disappear</span> <var>webSocket</var>.</p>

<p>If this affected any <code>WebSocket</code> objects, then <span>make document
unsalvageable</span> given <var>document</var> and "<code
data-x="blocking-websocket">websocket</code>".</p>
object</span> is <var>window</var>:</p>
<ol>
<li><p>If <var>document</var>'s <i data-x="concept-document-salvageable">salvageable</i>
state is true, then run the <span data-x="websocket-context-cleanup-steps">context cleanup
steps</span> given <var>webSocket</var>.</p></li>
<li><p>Otherwise, <span>make disappear</span> <var>webSocket</var>.</p></li>
</ol>
</li>

<li><p>For each <code>WebTransport</code> object <var>transport</var> whose <span>relevant global
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