* Features everywhere
- The goal here is to move things closer to the final design where
ConnectionContext represents a very low level primitive that represents
any connection like transport. As part of that change, we remove unnecessary
properties like User and move those into features. They temporarily live in the same
assembly but they are not required by ConnectionContext.
- Used features for Hubs instead of Metadata
- Metadata is no longer thread safe
* 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.
* Added support for non blocking sends on HubConnection
- Renamed Invoke to InvokeAsync
- Add support for non blocking send to TS client
- Add tests to make sure that non blocking sends don't send responses
* Re-layer the .NET Client into Http and non-Http
- Moved IConnection to Sockets.Abstractions and removed
HttpConnection and TransportType dependency.
- Renamed Sockets.Client to Sockets.Client.Http
- Renamed Sockets.Common to Sockets.Common.Http
- Renamed Connection to HttpConnection
- Removed HTTP dependency from HubConnection
- Removed tests that were testing connection logic in HubConnection
#518
* Merge transport and hub protocols
- This change merges the transport and hub protocols into a single protocol. The
idea being that sockets in a purely streaming layer that sends frames from the underlying
transport. This makes things like TCP possible and doesn't impose a framing layer at the lowest
level. This will make it possible to build servers like kestrel on top of the TCP layer.
- The Message was removed from the lowest layer of the stack and pushed into the hubs layer. Hub invocations
are framed with what was before the transport protocol. Connections also need to state upfront if they support
binary or not. This will determine how data will be serialized to the specific connection.
- Changed the SSE parser and writer to be strictly SSE without any of the transport protocol specific
information.
- To ensure we aren't using types in the wrong layers
- Moved protocol logic into SignalR
- Socket.Abstractions is now the root of the universe, Sockets.Common will likely be removed
or turned into Sockets.Common.Http.
- Move SSE parser to Sockets.Client and SSE writer into Sockets.Http
- Moved tests into the appropriate test projects
- Updated the spec
- Preventing from closing long polling transport with 204 in case of
error
- Reporting an error to the client if WebSocket was not closed normally
Note in case of ServerSentEvents it is not possible on the client to
tell the difference between when the server closed event stream due to
an exception or because the client left OnConnectedAsync. In both cases
the client sees only that the stream was closed.
Part of: #163
Exceptions thrown when sending or receiving messages would leave the
WebSockets transport in a half-closed state when one of the loops is
closed but the other one is still running preventing from the
Connection.Closed event to be fired.
Fixes: #412
* Split http and non-http layers
- This change introduces Microsoft.AspNetCore.SignalR.Http
and Microsoft.AspNetCore.Sockets.Http which expose extension methods
on IAppBuilder for wiring up a sockets and signalr pipeline.
* 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.
- If a message was sent and the application was ended in the same
poll request, the connection would be closed by the time the next poll
came in which resulted in a 404. This change waits until the transport writes
all data before closing it.
- Also fixed a test so that the exception started to show client side.
#469
Pawel Kadluczka
BrennanConroy
Mikael Mengistu
Pawel Kadluczka
David Fowler
Pavel Krymets
Ryan Brandenburg
Andrew Stanton-Nurse