Websockets are not initialised error

[SebastianFilip101]

I am trying to create a WebSocket endpoint with Ninja and by following the documentation provided here I keep getting the same error. I followed the entire documentation step by step. This is the error:

[INFO] GCLOUD: java.lang.IllegalStateException: WebSockets are not enabled. Unable to configure route /api/websocketExample. Using implementation ninja.websockets.DefaultWebSockets

Because of this error the Routes are not initialised either.
Any Ideas?

[thibaultmeyer]

Hello,

you are using the default implementation which is disabled by default. You have to create your own implementation.

https://github.com/ninjaframework/ninja/blob/develop/ninja-core/src/main/java/ninja/websockets/DefaultWebSockets.java

public class DefaultWebSockets implements WebSockets {

    @Override
    public boolean isEnabled() {
        return false;
    }
    
    @Override
    public void compileRoute(Route route) {
        throw new IllegalStateException("WebSockets are not enabled." + 
            " Unable to add websocket route to " + route.getUri() + "." + 
            " Are you running in a websocket-enabled HTTP server?");
    }
}

[SebastianFilip101]

Is there a practical example of how a custom implementation should look like? Or how websockets are enabled?

[jjlauer]

It feels like you aren't using a websocket enabled web container to run it in, thus Ninja is falling back to the default implementation, which basically warns you that you aren't running a websocket enabled container. You can solve this with either adding the dependencies to your project, or using a different container to run it in. Without knowing much about your project, what you're running it in, etc., I can't help much more than that. If you wanna share those details, we can probably point you in a better direction.

…

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