Patrick Maltagliati

Looks like turning off optimization for release allowed the build to continue successfully. https://github.com/emersonsoftware/socket.io-client-swift/tree/Xcode12

I am not sure if the branch works currently, also I would suggest getting the latest beta for your testing.

This comment from SocketIOClient.swift makes me thing so... ``` **NOTE**: The client is not thread/queue safe, all interaction with the socket should be done on the `manager.handleQueue` ```

@kasyrm Please see my comment above. We were able to solve this crash by dispatching any interaction with an instance of `SocketIOClient` onto the `manager.handleQueue`.

Yes, that's correct. We put EVERY interaction with the socket on the manager's queue. Did it help?