The wss websocket connection is experiencing issues in Firefox 89 when attempting to connect on localhost

For some reason, the websocket wss connection is not working in Firefox 89 when trying to connect on localhost.

Interestingly, I can successfully establish a connection using my to connect to from the production server.

However, when attempting to initiate the connection from localhost:4200 (client) to localhost:5001 (server), it fails to work.

Firefox keeps showing an error "Can’t establish a connection to the server at wss://localhost:5001/hub Error: Failed to start the connection: null."

I made sure to allow the connection in the firefox config settings, but unfortunately, that didn't resolve the issue.

Check out this image of Firefox Config for websockets

angulartypescriptfirefoxwebsocket

Answer №1

To resolve the issue, I needed to navigate to https://localhost:5001/hub in my browser and accept the certificate. Once this was done, the WebSocket connection was successfully established.

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