- There are too many issues and questions with respect to back pressure and the buffering policy we should use when the client being streamed to can't support the data being pushed via OnNext.
As a result, we're dropping support for IObservable but keeping ChannelReader and we'll eventually support IAsyncEnumerable when that makes it into the BCL.
- Add sample showing Observable -> ChannelReader adaption
- Ripped of Kestrel's SocketConnection to make a TcpConnection
IConnection implementation.
- Fixed issue with SignalR assuming there will always be a non-null user
on the ConnectionContext.