public override Task ConnectAsync(EndPoint remoteAddress, EndPoint localAddress)
{
NativeChannel ch = this.Channel;
if (!ch.Open)
{
return(this.CreateClosedChannelExceptionTask());
}
ConnectRequest request = null;
try
{
if (ch.connectPromise != null)
{
throw new InvalidOperationException("connection attempt already made");
}
ch.connectPromise = new TaskCompletionSource(remoteAddress);
if (localAddress != null)
{
ch.DoBind(localAddress);
}
request = new TcpConnect(this, (IPEndPoint)remoteAddress);
return(ch.connectPromise.Task);
}
catch (Exception ex)
{
request?.Dispose();
this.CloseIfClosed();
return(TaskEx.FromException(this.AnnotateConnectException(ex, remoteAddress)));
}
}
void FinishRead(ReadOperation operation)
{
NativeChannel ch = this.Channel;
IChannelPipeline pipeline = ch.Pipeline;
IRecvByteBufAllocatorHandle allocHandle = this.RecvBufAllocHandle;
IByteBuffer buffer = operation.Buffer;
allocHandle.LastBytesRead = operation.Status;
if (allocHandle.LastBytesRead <= 0)
{
// nothing was read -> release the buffer.
buffer.SafeRelease();
}
else
{
buffer.SetWriterIndex(buffer.WriterIndex + operation.Status);
pipeline.FireChannelRead(buffer);
}
allocHandle.IncMessagesRead(1);
allocHandle.ReadComplete();
pipeline.FireChannelReadComplete();
if (operation.Error != null)
{
pipeline.FireExceptionCaught(operation.Error);
}
if (operation.Error != null || operation.EndOfStream)
{
ch.DoClose();
}
}
void FinishConnect(ConnectRequest request)
{
NativeChannel ch = this.Channel;
TaskCompletionSource promise = ch.connectPromise;
try
{
if (request.Error != null)
{
promise.TrySetException(request.Error);
this.CloseIfClosed();
}
else
{
ch.DoFinishConnect();
promise.TryComplete();
}
}
catch (Exception exception)
{
promise.TrySetException(exception);
this.CloseIfClosed();
}
finally
{
request.Dispose();
ch.connectPromise = null;
}
}
void INativeUnsafe.FinishConnect(ConnectRequest request)
{
NativeChannel ch = this.Channel;
if (ch.EventLoop.InEventLoop)
{
this.FinishConnect(request);
}
else
{
ch.EventLoop.Execute(ConnectCallbackAction, this, request);
}
}
ReadOperation INativeUnsafe.PrepareRead()
{
NativeChannel ch = this.Channel;
IChannelConfiguration config = ch.Configuration;
IByteBufferAllocator allocator = config.Allocator;
IRecvByteBufAllocatorHandle allocHandle = this.RecvBufAllocHandle;
allocHandle.Reset(config);
IByteBuffer buffer = allocHandle.Allocate(allocator);
allocHandle.AttemptedBytesRead = buffer.WritableBytes;
return(new ReadOperation(this, buffer));
}
protected NativeChannelUnsafe(NativeChannel channel) : base(channel)
{
}