WebSocket onFailure Why not return the connection information at that time

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WebSocketConnection.onFailure,
```
@Override
public void onFailure(WebSocket ws, Throwable t, Response response) {
logger.error("[Connection {}] Failure", connectionId, t);
// Wouldn't it be better to just return null and return the connectionId
onFailureCallback.onReceive(null);
}
```
If one of the multiple subscriptions is disconnected, how do you retry without knowing the current subscription information Or throw the exception out

Start by reading WebSocketConnection.onFailure and the onFailureCallback usage shown in the issue, then trace how multiple subscriptions are represented and retried. Determine whether the callback should expose connection information or propagate the exception, and document the expected behavior before making a change.

Written by the indexing model from the issue text.