Fix: Playground not starting due to a race condition #1084
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Without this PR, the isConnected() method tries for two seconds before
assuming the connection worked out. However, sometimes it takes more
than that to reach the remote frame or context. This PR replaces that
with an infinite loop that will keep trying until the remote end
actually responds.
This solves a problem with the progress bar stuck at 0% or 50%.
## Testing instructions
Apply the following patch to artificially and synchronously slow down the boot in all contexts (website, remote, worker)
```patch
diff --git a/packages/php-wasm/web/src/lib/web-php.ts b/packages/php-wasm/web/src/lib/web-php.ts
index 27b976a23..e4f9071b5 100644
--- a/packages/php-wasm/web/src/lib/web-php.ts
+++ b/packages/php-wasm/web/src/lib/web-php.ts
@@ -44,6 +44,10 @@ const fakeWebsocket = () => {
};
};
+for (let i = 0; i < 5000000; i++) {
+ crypto.randomUUID();
+}
+
export class WebPHP extends BasePHP {
/**
* Creates a new PHP instance.
```
Then open the local Playground at http://localhost:5400/website-server/
and confirm it starts loading after a few seconds.
Repeat a dozen or so times and confirm Playground reliably loads each
time.
Then do the same without this PR and confirm the progress bar tends to
get stuck.
I'd love to ship an E2E test with this, but I can't think of a way to
build one.
adamziel
added
[Type] Bug
adamziel
changed the title
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Without this PR, the isConnected() method tries for two seconds before assuming the connection worked out. However, sometimes it takes more than that to reach the remote frame or context. This PR replaces that with an infinite loop that will keep trying until the remote end actually responds.
This solves a problem with the progress bar stuck at 0% or 50%.
Testing instructions
Apply the following patch to artificially and synchronously slow down the boot in all contexts (website, remote, worker)
Then open the local Playground at http://localhost:5400/website-server/ and confirm it starts loading after a few seconds.
Repeat a dozen or so times and confirm Playground reliably loads each time.
Then do the same without this PR and confirm the progress bar tends to get stuck.
I'd love to ship an E2E test with this, but I can't think of a way to build one.