Uxp use socket to communicate with external programs issue

Photoshop UXP Plugin API
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When using the ‘helper’ and ‘uxp’ components in the ‘AdobeDocs/uxp-photoshop-plugin-samples/desktop-helper-sample’ project on Windows, they both establish connections without any issues. However, upon closing the ‘helper,’ you may encounter the following error message.

Uncaught Error: The web socket is already closed. uxp://uxp-internal/domjs_scripts.js:2

To re-establish the connection, you’ll need to restart Photoshop. Are there any experts out there who can offer guidance on resolving this issue?

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Supplement:
It works fine when connected on a Mac, only on Windows is where the issue arises.

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@wei
Thanks for reporting the issue.
I’ve tested the issue and confirmed that it occurs on Windows.
WebSocket.close() should not throw an exception if it’s already CLOSED or CLOSING.
(See 3 from WebSockets Standard)
It’s an UXP issue. I’ve created a bug ticket for the issue.

cc @Sujai

1 Like
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@mykim Thank you for your assistance