Redirect error msg responses without sessionId to all sessions and the connection #985
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If we receive an error response with an id, but not sessionId, there's a slim chance that this response should be redirected to a session but will instead be redirected to the connection's event loop. This means that there is a chance that we could end up with a handler that is waiting for a response indefinitely (or until a timeout occurs). Since we cannot know exactly which session the response should be redirected to, we're sending it to all live sessions as well as the connection's event loop. Most handlers should ignore the extra error message, and the handler waiting for the msg with the unique msgId will action on it. If no handlers are alive or the session has already been closed that this response msg should go to, then no handlers will action on it either.
This makes it simpler to work with the mutex
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Description of changes
If we receive an error response with an
id, but nosessionId, there's a slim chance that this response should be redirected to asessionbut it will instead be redirected to theconnection's event loop. This means that there is a chance that we could end up with a handler that is waiting for a response indefinitely (or until a timeout occurs).Since we have no knowledge of the
sessionIdfrom the response msg, we're now sending it to all livesessions as well as theconnection's event loop.Most handlers should ignore the extra error message, whilst the handler waiting for the msg (with the unique
msgId) will action on it. If no handlers are alive or the associatedsessionhas already been closed, then no handlers will action on it still since we're now working with uniquemsgIds at the connection scope level.Checklist