fix(realtime): web socket message listener doesn't stop #284
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This was referenced Apr 1, 2024
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What kind of change does this PR introduce?
Bug fix
What is the current behavior?
When the WebSocket is closed by the client, the listener for messages doesn't stop.
What is the new behavior?
By wrapping the web socket task in a SocketStream class that exposes a custom cancel method, we make sure to finish the stream when canceling the socket connection on the client side.
Additional context
There are some caveats when wrapping WebSocket in async/await, but thanks to https://www.donnywals.com/iterating-over-web-socket-messages-with-async-await-in-swift/ this PR fixes it.