* Invert the dependency between connection adapters and Frame
- Removed PrepareRequest from IAdaptedConnection and instead added
a feature collection to the ConnectionAdapterContext. This allows features to be set
once by the adapter instead of per request. It's the Frame's job to copy features
from the connection level feature collection into the per request feature collection.
- Set the scheme to "https" based on the presence of ITlsConnectionFeature.
- Always set ITlsConnection feature if the HttpsAdaptedConnection doesn't throw during
the handshake
* More FrameConnection refactoring
- This change reverts the change to complete the writer with an
exception on abort because of the number of first chance exceptions
that get thrown.
- This change also moves connection logging into FrameConnection instead
of being split between the ConnectionHandler and FrameConnection.
- Fixed issues with LibuvOutputConsumerTests that leak WriteReq since
cancelled writes no longer end the connection.
* Refactoring and of FrameConnection and Frame
- Building on top of the last refactoring of FrameConnection, this change aims to clean up
the communication between the Frame and FrameConnection by removing some concepts and
being consistent about the communication between Frame and FrameConnection with or without
connection adapters. Changes include:
- Removing ConnectionLifetimeControl, ISocketOutput, StreamSocketOutput
- Moving more initialization of the frame to FrameConnection after the pipes
are setup
- OutputProducer communicates cancellation via the IPipeWriter instead of the output's IPipeReader.
- Frame always communicates via the pipes and that communications flows through the layers to the transport.
This means that each 1/2 of the adapted pipeline handles closing the right side of the transport at the
right time, propagating exceptions as necessary.
- This is how the flow looks now:
-> ->
[transport] [connection adapters] [frame]
<- <-
- Transports need to handle a ConnectionAbortedException on the output as a signal to stop
writing and end the connection. This will no longer try to drain the output but will just stop
writing and end the response immediately.
- Remove frame.Abort when cancellation on Write fails.
- Unify the connection shutdown logic
- Dispose 1/2 initialized connection adapters
#1815
* Added a ConnectionAbortedException to Transport.Abstractions
- To avoid hard coding TaskCanceledException in each transport
- This PR tries to keep compatibility by converting the ConnectionAbortedException
to a TaskCanceledException on exceptions in FrameRequestStream. The downside is that
this conversion causes an async state machine to be created per call to ReadAsync.
CopyToAsync isn't that bad because it's a single long running task.
* Fix race where ListenerPrimary is disposed before secondary listeners spin up
- Since we only add listeners to dispatch pipes after receiving the "ack" message
it's possible to have pipes that were created but not acked yet. We might miss
disposal of those pipes if they were never added to the list of _dispatchPipes.
#1761
The format:
The trace identifier begins with connection ID and ends with a number that increments with each request per connection.
Example:
Connection ID = xyz
Request 1 = "xyz:00000001"
Request 2 = "xyz:00000002"
...
Request 15 = "xyz:0000000F"
Request 16 = "xyz:00000010"
- This change does a few things:
1. It adds the events we will replace with
pipe events to IConnectionContext and IConnectionInformation to get out of
band notifications about pipe completions.
2. It also implements those callbacks
and exposing slight changes we'll need to make once we have them. The idea is
that we can delete/replace these methods once we have the new pipe API and things
will keep working.
- FIN from the client shouldn't throw
- Forced close from the server should throw
- Properly wrap connection reset exceptions and other exceptions
in IO exceptions
- This gives kestrel control over when the output closes
- Fixed one test that assumed libuv
- Dispose the connection to yield the reader
Fixes#1774
* Schedule connection adapter reads on configured thread pool
- This should speed up connection adapters as we don't block
new reads. It *might* also help some of the test flakiness
* Clean up libuv connection
- Cancel all pending flushes on the input writer before
disposing the stream handle.
- Complete the pipe before disposing the socket
- Added logging for connection pause/resume.
- Added test
After upgrade has been accepted by the server:
- Reads to HttpRequest.Body always return 0
- Writes to HttpResponse.Body always throw
- The only valid way to communicate is to use the stream returned by IHttpUpgradeFeature.UpgradeAsync()
Also, Kestrel returns HTTP 400 if requests attempt to send a request body along with Connection: Upgrade
- Simplify KestrelServer by refactoring address binding into a separate class
- Use strategy pattern to implement address binding for different sceanrios
- Add fallback from binding 0.0.0.0 if binding to [::] fails (can happen if UvException with EAFNOSUPPORT is thrown)
* Make all UvRequest objects normal GC handles
- This avoids the cost of using GCHandle.Alloc per operation.
- It *does* mean that we need to explicitly dispose UvRequest objects
after using them (which we did before anyways). This change does
add a few try catch statements to make sure we always dispose the UvRequest
if there are synchronous exceptions.
- This is ~1.5% of the overhead in the benchmarks today
- Keep track of all allocated UvRequest objects with a WeakReference in DEBUG
and assert none are kept around after cleaning up.
- Fixed a leak where we don't clean up UvWriteReq objects when writing
to the named pipe.
- This property will force Kestrel to use whatever scheduler the transport
used when write and read callbacks are fired. The default value is false so
all calls to user code including connection adapters, and the application function,
and cancellation token callbacks.
- Transports may expose configuration that changes what the transport thread is.
- Removed InternalKestrelServerOptions.cs
- Added a configurable UseSockets overload (even though there are no options yet)
- Remove RequiresDispatch from the IConnectionInformation
Pavel Krymets
David Fowler
Stephen Halter
Cesar Blum Silveira
Nate McMaster
Nate McMaster