* Decouple connection objects from the server (#2535)
- Making progress towards being able to use the connection objects on the client side.
* Wait for input writer to complete before calling OnConnectionClosed (#2566)
* Wait for the ConnectionClosed token to stop tracking connections (#2574)
- The prior strategy of waiting for the pipe completed callbacks doesn't work
because blocks are returned to the memory pool after the callbacks are fired.
* Consistently handle connection resets (#2547)
* Provide better connection abort exceptions and logs
* void IConnectionDispatcher.OnConnection
* Renames from API review
- Rename Microsoft.AspNetCore.Protocols.Abstractions to Microsoft.AspNetCore.Connections.Abstractions.
- Renamed IConnectionHandler to IConnectionDispatcher (and related properties and types)
- Added ConnectionHandler and UseConnectionHandler extension method to Connections.Abstractions.
- Use ActivatorUtilties to create the ConnectionHandler
- Most of the shared code is in the HttpProtocol class (former Frame)
- Virtual calls handle protocol-specific things
- Move the ProcessRequestsAsync loop to HttpProtocol
- Implement HTTP/1.x request processing in Http1Connection and HTTP/2
in Http2Stream, with Http1Connection<T> and Http2Stream<T> subclassing
those classes in order to handle the generic HttpContext parameter
- Split MessageBody into Http1MessageBody and Http2MessageBody,
with MessageBody containing shared member variables and methods
* Added initial connection middleware pipeline
- Implemented IConnectionBuilder on ListenOptions. Kept IConnectionAdapter for now.
- Delay the configure callback for ListenOptions until the server has started.
- Added ConnectionLimitMiddleware and HttpConnectionMiddleware
- Expose ConnectionAborted and ConnectionClosed on ConnectionContext and
IConnectionTransportFeature
- Updated the tests
- Removed IConnectionApplicationFeature
- Moved Application to IConnectionTransportFeature
What works:
- HTTP/2 over TLS1.2 with ALPN
- Request and response flow
- Headers are compressed and decompressed with HPACK
- Request body can be read by streams (if present)
- MVC template app with individual auth works fine
- PRIORITY frames are validated
- RST_STREAM frames are validated and abort streams
- SETTINGS frames are validated and ACKed
- PING frames are validated and ACKed
- GOAWAY frames stop connections
- WINDOW_UPDATE frames are validated
- CONTINUATION frames are sent for large header blocks
What doesn't work yet:
- Flow control in either direction
- It's not possible to encode a single header across more than one frame
- Affects only a very large header (name and value combined ~16KB long)
- Request trailers
- Response trailers
- Limits and timeouts in `KestrelServerLimits` are not enforced on HTTP/2
- HPACK use is very limited on the send side
- Literals are not Huffman-encoded
- Common headers (e.g. "server: Kestrel") are never indexed
- Honoring client settings
- Some error checking is still missing (e.g. validating incoming frame size)
Chris Ross (ASP.NET)
John Luo
Stephen Halter
Nate McMaster
David Fowler
Pavel Krymets
Mike Harder
BrennanConroy
Cesar Blum Silveira
Cesar Blum Silveira