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fix(ext/websocket): don't throw exception when sending to closed socket (#26932)

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[The WebSocket specification for the `send`
function](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send)
says:

> The browser will throw an exception if you call `send()` when the
connection is in the `CONNECTING` state. If you call `send()` when the
connection is in the `CLOSING` or `CLOSED` states, the browser will
silently discard the data.

and:

> ### Exceptions
> 
> `InvalidStateError`
[`DOMException`](https://developer.mozilla.org/en-US/docs/Web/API/DOMException)
> 
> Thrown if
[`WebSocket.readyState`](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/readyState)
is `CONNECTING`.

This pull request fixes the current behavior to match the specification.
Also, I believe it fixes #17586.
This commit is contained in:
Charlie Bellini 2024-11-22 00:04:47 +01:00 • committed by GitHub
parent a19b3f44d4
commit 8f7787f81b
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3 changed files with 22 additions and 3 deletions
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6
ext/websocket/01_websocket.js
View file

@ -330,10 +330,14 @@ class WebSocket extends EventTarget {
webidl.requiredArguments(arguments.length, 1, prefix);
data = webidl.converters.WebSocketSend(data, prefix, "Argument 1");
if (this[_readyState] !== OPEN) {
if (this[_readyState] === CONNECTING) {
throw new DOMException("'readyState' not OPEN", "InvalidStateError");
}
if (this[_readyState] !== OPEN) {
return;
}
if (this[_sendQueue].length === 0) {
// Fast path if the send queue is empty, for example when only synchronous
// data is being sent.