Unable to rebind WebSocketConnectionSource

[BrightKn1ght]

We derived our own IDE from the theia project version 1.34.4. As one of our adaptions we added an authentication token between the browser and the theia backend based on bearer tokens.

We extended from WebSocketConnectionProvider and have overriden the function createWebSocket to inject an auth token:

We created our own theia plugin called theia-tiger which was able to rebind the existing WebSocketConnectionProvider with our adapted class AuthConnectionProvider before the class was constructed. At the start() method just our AuthConnectionProvider was loaded:

After PR #13082 the WebSocketConnectionProvider was replaced with WebSocketConnectionSource and also its instantiation time is now different:

Our plugin theia-tiger loads later and is not able to rebind the already created socket:

I'm not an inversify expert. I would have the follwing questions:

1. Would it be possible with some inversify magic to still rebind the WebSocketConnectionProvider in our theia-tiger plugin?
2. If not how would you suggest to add an auth token to the browsers socket in the current release 1.46.1?

Thanks for your help!

Additional Information

• Operating System:

• Theia Version: 1.46.1

[msujew]

Hey @BrightKn1ght,

you need to rebind the WebSocketConnectionSource inside of a custom frontendPreload module. As you have already noticed, binding it in a frontend module is too late.

[BrightKn1ght]

Hey @msujew,
thanks for your quick reply and the nice hint. I was not aware that this is possible since this index.js is a generated file. Is there an example available how to add a custom plugin to frontendPreload module?

[msujew]

Yes, see

theia/packages/core/package.json

Line 134 in 4b8ec2d

"frontendPreload": "lib/browser/preload/preload-module",

Note that index.js is generated from the modules found in your package.json, at least in parts.

[BrightKn1ght]

Nice, Thank you. I will give it a try if I can get it working.

[BrightKn1ght]

Thank you very much Mark! I could get it working by putting this piece of code to a custom frontendPreload module.

export default new ContainerModule((bind, unbind, isBound, rebind) => { rebind(WebSocketConnectionSource).to(AuthWebSocketConnectionSource).inSingletonScope(); });