refactor and fix std::promise usage in `RtClient`

heroiclabs / nakama-cpp

Generic C/C++ client for Nakama server.

https://heroiclabs.com/docs/cpp-client-guide

Apache License 2.0

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Closed lugehorsam closed 10 months ago

lugehorsam commented 10 months ago

Use nullptr to signal whether or not a connection was made through connectAsync()
Catch std::future_error when setting an exception ptr on the promise object.
Make sure _ctx is properly reset inside the wslay adapter on error.