private async void Consume(IPipeReader input)
{
while (true)
{
var result = await input.ReadAsync();
var buffer = result.Buffer;
try
{
if (buffer.IsEmpty && result.IsCompleted)
{
break;
}
await WriteAsync(buffer);
}
finally
{
input.Advance(buffer.End);
}
}
input.Complete();
}
public static async void Echo(IPipeReader input, IPipeWriter output)
{
try
{
while (true)
{
var result = await input.ReadAsync();
var request = result.Buffer;
if (request.IsEmpty && result.IsCompleted)
{
input.Advance(request.End);
break;
}
int len = request.Length;
var response = output.Alloc();
response.Append(request);
await response.FlushAsync();
input.Advance(request.End);
}
}
catch
{
input.Complete();
output.Complete();
}
}
public async Task Execute(IPipeReader reader, IPipeWriter writer)
{
List <MemoryHandle> handles = new List <MemoryHandle>();
while (true)
{
var result = await reader.ReadAsync();
var inputBuffer = result.Buffer;
if (inputBuffer.IsEmpty)
{
if (result.IsCompleted)
{
break;
}
reader.Advance(inputBuffer.End);
continue;
}
var writerBuffer = writer.Alloc();
var buffer = inputBuffer.First;
if (buffer.Length > 0)
{
unsafe
{
var handle = buffer.Retain(pin: true);
handles.Add(handle);
_inflater.SetInput((IntPtr)handle.PinnedPointer, buffer.Length);
writerBuffer.Ensure();
handle = writerBuffer.Buffer.Retain(pin: true);
handles.Add(handle);
int written = _inflater.Inflate((IntPtr)handle.PinnedPointer, writerBuffer.Buffer.Length);
writerBuffer.Advance(written);
var consumed = buffer.Length - _inflater.AvailableInput;
inputBuffer = inputBuffer.Slice(0, consumed);
}
}
reader.Advance(inputBuffer.End);
await writerBuffer.FlushAsync();
}
reader.Complete();
writer.Complete();
_inflater.Dispose();
foreach (var handle in handles)
{
handle.Dispose();
}
}
private async Task WriteOutputAsync(LibuvOutputConsumer consumer, IPipeReader outputReader, Frame frame)
{
// This WriteOutputAsync() calling code is equivalent to that in LibuvConnection.
try
{
// Ensure that outputReader.Complete() runs on the LibuvThread.
// Without ConfigureAwait(false), xunit will dispatch.
await consumer.WriteOutputAsync().ConfigureAwait(false);
frame.Abort(error: null);
outputReader.Complete();
}
catch (UvException ex)
{
frame.Abort(ex);
outputReader.Complete(ex);
}
}
private async Task ReadInputAsync(Stream stream)
{
Exception error = null;
try
{
if (stream == null)
{
// REVIEW: Do we need an exception here?
return;
}
while (true)
{
var outputBuffer = Input.Writer.Alloc(MinAllocBufferSize);
var array = outputBuffer.Buffer.GetArray();
try
{
var bytesRead = await stream.ReadAsync(array.Array, array.Offset, array.Count);
outputBuffer.Advance(bytesRead);
if (bytesRead == 0)
{
// FIN
break;
}
}
finally
{
outputBuffer.Commit();
}
var result = await outputBuffer.FlushAsync();
if (result.IsCompleted)
{
break;
}
}
}
catch (Exception ex)
{
// Don't rethrow the exception. It should be handled by the Pipeline consumer.
error = ex;
}
finally
{
Input.Writer.Complete(error);
// The application could have ended the input pipe so complete
// the transport pipe as well
_transportInputPipeReader.Complete();
}
}
public static async Task CopyToEndAsync(this IPipeReader input, Stream stream, int bufferSize, CancellationToken cancellationToken)
{
try
{
await input.CopyToAsync(stream, bufferSize, cancellationToken);
}
catch (Exception ex)
{
input.Complete(ex);
return;
}
return;
}
private static async void WriteToSocket(TSocket tsocket, IPipeReader reader)
{
Exception error = null;
try
{
while (true)
{
var readResult = await reader.ReadAsync();
ReadableBuffer buffer = readResult.Buffer;
ReadCursor end = buffer.Start;
try
{
if ((buffer.IsEmpty && readResult.IsCompleted) || readResult.IsCancelled)
{
// EOF or TransportThread stopped
break;
}
if (!buffer.IsEmpty)
{
var result = TrySend(tsocket.Fd, ref buffer);
if (result.Value == buffer.Length)
{
end = buffer.End;
}
else if (result.IsSuccess)
{
end = buffer.Move(buffer.Start, result.Value);
}
else if (result == PosixResult.EAGAIN || result == PosixResult.EWOULDBLOCK)
{
if (!await Writable(tsocket))
{
// TransportThread stopped
break;
}
}
else
{
error = result.AsException();
break;
}
}
}
finally
{
// We need to call Advance to end the read
reader.Advance(end);
}
}
}
catch (Exception ex)
{
error = ex;
}
finally
{
tsocket.ConnectionContext.OnConnectionClosed(error);
reader.Complete(error);
tsocket.StopReadFromSocket();
CleanupSocketEnd(tsocket);
}
}
public async Task Execute(IPipeReader reader, IPipeWriter writer)
{
List <MemoryHandle> handles = new List <MemoryHandle>();
while (true)
{
var result = await reader.ReadAsync();
var inputBuffer = result.Buffer;
if (inputBuffer.IsEmpty)
{
if (result.IsCompleted)
{
break;
}
reader.Advance(inputBuffer.End);
continue;
}
var writerBuffer = writer.Alloc();
var buffer = inputBuffer.First;
unsafe
{
var handle = buffer.Retain(pin: true);
handles.Add(handle);
_deflater.SetInput((IntPtr)handle.PinnedPointer, buffer.Length);
}
while (!_deflater.NeedsInput())
{
unsafe
{
writerBuffer.Ensure();
var handle = writerBuffer.Buffer.Retain(pin: true);
handles.Add(handle);
int written = _deflater.ReadDeflateOutput((IntPtr)handle.PinnedPointer, writerBuffer.Buffer.Length);
writerBuffer.Advance(written);
}
}
var consumed = buffer.Length - _deflater.AvailableInput;
inputBuffer = inputBuffer.Slice(0, consumed);
reader.Advance(inputBuffer.End);
await writerBuffer.FlushAsync();
}
bool flushed = false;
do
{
// Need to do more stuff here
var writerBuffer = writer.Alloc();
unsafe
{
writerBuffer.Ensure();
var memory = writerBuffer.Buffer;
var handle = memory.Retain(pin: true);
handles.Add(handle);
int compressedBytes;
flushed = _deflater.Flush((IntPtr)handle.PinnedPointer, memory.Length, out compressedBytes);
writerBuffer.Advance(compressedBytes);
}
await writerBuffer.FlushAsync();
}while (flushed);
bool finished = false;
do
{
// Need to do more stuff here
var writerBuffer = writer.Alloc();
unsafe
{
writerBuffer.Ensure();
var memory = writerBuffer.Buffer;
var handle = memory.Retain(pin: true);
handles.Add(handle);
int compressedBytes;
finished = _deflater.Finish((IntPtr)handle.PinnedPointer, memory.Length, out compressedBytes);
writerBuffer.Advance(compressedBytes);
}
await writerBuffer.FlushAsync();
}while (!finished);
reader.Complete();
writer.Complete();
_deflater.Dispose();
foreach (var handle in handles)
{
handle.Dispose();
}
}
private async Task DoSend()
{
Exception error = null;
try
{
while (true)
{
// Wait for data to write from the pipe producer
var result = await _output.ReadAsync();
var buffer = result.Buffer;
if (result.IsCancelled)
{
break;
}
try
{
if (!buffer.IsEmpty)
{
if (buffer.IsSingleSpan)
{
await _socket.SendAsync(GetArraySegment(buffer.First), SocketFlags.None);
}
else
{
SetupSendBuffers(buffer);
try
{
await _socket.SendAsync(_sendBufferList, SocketFlags.None);
}
finally
{
_sendBufferList.Clear();
}
}
}
else if (result.IsCompleted)
{
break;
}
}
finally
{
_output.Advance(buffer.End);
}
}
_socket.Shutdown(SocketShutdown.Send);
}
catch (SocketException ex) when(ex.SocketErrorCode == SocketError.OperationAborted)
{
error = null;
}
catch (ObjectDisposedException)
{
error = null;
}
catch (IOException ex)
{
error = ex;
}
catch (Exception ex)
{
error = new IOException(ex.Message, ex);
}
finally
{
_connectionContext.OnConnectionClosed(error);
_output.Complete(error);
}
}
public async Task Execute(IPipeReader reader, IPipeWriter writer)
{
while (true)
{
var result = await reader.ReadAsync();
var inputBuffer = result.Buffer;
if (inputBuffer.IsEmpty)
{
if (result.IsCompleted)
{
break;
}
reader.Advance(inputBuffer.End);
continue;
}
var writerBuffer = writer.Alloc();
var memory = inputBuffer.First;
unsafe
{
// TODO: Pin pointer if not pinned
void *inPointer;
if (memory.TryGetPointer(out inPointer))
{
_deflater.SetInput((IntPtr)inPointer, memory.Length);
}
else
{
throw new InvalidOperationException("Pointer needs to be pinned");
}
}
while (!_deflater.NeedsInput())
{
unsafe
{
void *outPointer;
writerBuffer.Ensure();
if (writerBuffer.Memory.TryGetPointer(out outPointer))
{
int written = _deflater.ReadDeflateOutput((IntPtr)outPointer, writerBuffer.Memory.Length);
writerBuffer.Advance(written);
}
else
{
throw new InvalidOperationException("Pointer needs to be pinned");
}
}
}
var consumed = memory.Length - _deflater.AvailableInput;
inputBuffer = inputBuffer.Slice(0, consumed);
reader.Advance(inputBuffer.End);
await writerBuffer.FlushAsync();
}
bool flushed = false;
do
{
// Need to do more stuff here
var writerBuffer = writer.Alloc();
unsafe
{
void *pointer;
writerBuffer.Ensure();
var memory = writerBuffer.Memory;
if (memory.TryGetPointer(out pointer))
{
int compressedBytes;
flushed = _deflater.Flush((IntPtr)pointer, memory.Length, out compressedBytes);
writerBuffer.Advance(compressedBytes);
}
else
{
throw new InvalidOperationException("Pointer needs to be pinned");
}
}
await writerBuffer.FlushAsync();
}while (flushed);
bool finished = false;
do
{
// Need to do more stuff here
var writerBuffer = writer.Alloc();
unsafe
{
void *pointer;
writerBuffer.Ensure();
var memory = writerBuffer.Memory;
if (memory.TryGetPointer(out pointer))
{
int compressedBytes;
finished = _deflater.Finish((IntPtr)pointer, memory.Length, out compressedBytes);
writerBuffer.Advance(compressedBytes);
}
}
await writerBuffer.FlushAsync();
}while (!finished);
reader.Complete();
writer.Complete();
_deflater.Dispose();
}
public async Task Execute(IPipeReader reader, IPipeWriter writer)
{
while (true)
{
var result = await reader.ReadAsync();
var inputBuffer = result.Buffer;
if (inputBuffer.IsEmpty)
{
if (result.IsCompleted)
{
break;
}
reader.Advance(inputBuffer.End);
continue;
}
var writerBuffer = writer.Alloc();
var memory = inputBuffer.First;
if (memory.Length > 0)
{
unsafe
{
void *pointer;
if (memory.TryGetPointer(out pointer))
{
_inflater.SetInput((IntPtr)pointer, memory.Length);
void *writePointer;
writerBuffer.Ensure();
if (writerBuffer.Memory.TryGetPointer(out writePointer))
{
int written = _inflater.Inflate((IntPtr)writePointer, writerBuffer.Memory.Length);
writerBuffer.Advance(written);
}
else
{
throw new InvalidOperationException("Pointer needs to be pinned");
}
}
else
{
throw new InvalidOperationException("Pointer needs to be pinned");
}
var consumed = memory.Length - _inflater.AvailableInput;
inputBuffer = inputBuffer.Slice(0, consumed);
}
}
reader.Advance(inputBuffer.End);
await writerBuffer.FlushAsync();
}
reader.Complete();
writer.Complete();
_inflater.Dispose();
}