public async Task OnConnectedCoreAsync(FramingConnection connection)
{
using (_appLifetime.ApplicationStopped.Register(() =>
{
connection.RawTransport.Input.Complete();
connection.RawTransport.Output.Complete();
}))
{
IConnectionReuseHandler reuseHandler = null;
do
{
System.IO.Pipelines.PipeReader inputPipe = connection.Input;
var modeDecoder = new ServerModeDecoder(connection.Logger);
try
{
if (!await modeDecoder.ReadModeAsync(inputPipe))
{
break; // Input pipe closed
}
}
catch (CommunicationException e)
{
// see if we need to send back a framing fault
if (FramingEncodingString.TryGetFaultString(e, out string framingFault))
{
// TODO: Timeouts
await connection.SendFaultAsync(framingFault, Timeout.InfiniteTimeSpan /*GetRemainingTimeout()*/,
ConnectionOrientedTransportDefaults.MaxViaSize + ConnectionOrientedTransportDefaults.MaxContentTypeSize);
}
return; // Completing the returned Task causes the connection to be closed if needed and cleans everything up.
}
connection.FramingMode = modeDecoder.Mode;
await _next(connection);
// Unwrap the connection.
// TODO: Investigate calling Dispose on the wrapping stream to improve cleanup. nb: .NET Framework does not call Dispose.
connection.Transport = connection.RawTransport;
// connection.ServiceDispatcher is null until later middleware layers are executed.
if (reuseHandler == null)
{
reuseHandler = connection.ServiceDispatcher.Binding.GetProperty <IConnectionReuseHandler>(new BindingParameterCollection());
}
} while (await reuseHandler.ReuseConnectionAsync(connection, _appLifetime.ApplicationStopping));
// On .NET Framework, with the way that AspNetCore closes a connection, it sometimes doesn't send the
// final bytes if those bytes haven't been sent yet. Delaying completeing the connection to compensate.
await Task.Delay(5);
}
// AspNetCore 2.1 doesn't close the connection. 2.2+ does so these lines can eventually be removed.
connection.RawTransport.Input.Complete();
connection.RawTransport.Output.Complete();
}
public FormPipeReader(System.IO.Pipelines.PipeReader pipeReader, System.Text.Encoding encoding)
{
}
public FormPipeReader(System.IO.Pipelines.PipeReader pipeReader)
{
}
public ServerSentEventsTransport(System.IO.Pipelines.PipeReader application, string connectionId, Microsoft.Extensions.Logging.ILoggerFactory loggerFactory)
{
}
public LongPollingTransport(System.Threading.CancellationToken timeoutToken, System.IO.Pipelines.PipeReader application, Microsoft.Extensions.Logging.ILoggerFactory loggerFactory)
{
}
