* Replace ConnectionContext with HubConnectionContext
- The SocketDelegate implementation owns the transport pipe,
it's a single producer single consumer model. SignalR needs to support
multiple producers so that broadcast, return values and sending to individual
connections works. This change introduces a multi producer channel that is used
by all producers to copy data to the transport safely. This will make the move
to pipelines easier.
* Progress towards splitting the layers
- This is based on the work anurse did in anurse/endpoint-middleware-spike to
introduce a connection middleware pipeline that mimics much of our http
pipeline. The intent is that this layer will be generic enough to build both
SignalR and Kestrel on top of but we're not there yet. This change makes incremental
progress towards splitting apart sockets and http so that we can add the tcp transport
without breaking everything all at once.
- Created Microsoft.AspNetCore.Sockets.Abstractions where the primitives for
sockets live. That includes, ConnectionContext (formerly Connection), EndPoint,
ISocketBuilder, SocketDelegate, etc.
- ConnectionContext isn't in it's final form as yet, it still very closely mirrors
the original Connection object we had so that tests continue to pass.
- The HttpConnectionDispatcher doesn't know about EndPoint anymore, it just cares
about invoking the SocketDelegate.
- EndPointOptions has been removed as part of this change as it coupled http specific configuration
to the end point type. There's a new HttpSocketOptions that needs to be passed into MapSocket calls.
- Updated the tests to deal with the API changes.
David Fowler
Pawel Kadluczka