// handle sync reads from each end and pass to the other end
public static async Task HandleClientAsync(CancellationToken cancelToken, IPluggableStreamAsync inputStream, IPluggableStreamAsync outputStream)
{
while (!cancelToken.IsCancellationRequested)
{
byte[] outputRead = new byte[MaxMessageSize];
byte[] inputRead = new byte[MaxMessageSize];
var readFromOutput = outputStream.ReadAsync(outputRead, 0, MaxMessageSize, cancelToken);
var readFromInput = inputStream.ReadAsync(inputRead, 0, MaxMessageSize, cancelToken);
while (!cancelToken.IsCancellationRequested)
{
int byteCount;
var nextTask = await Task.WhenAny(new[] { readFromOutput, readFromInput });
Console.Write(".");
if (nextTask == readFromInput)
{
try
{
byteCount = await nextTask;
}
catch (System.IO.IOException e) when((e.InnerException as SocketException)?.ErrorCode == 10054)
{
throw new OperationCanceledException("Input stream disconnected (WSACONNRESET)");
}
OpDiag(Operation.InboundRead, byteCount, inputRead);
if (byteCount == 0)
{
throw new OperationCanceledException("Input stream disconnected");
}
var outputWrite = new byte[MaxMessageSize];
Array.Copy(inputRead, outputWrite, byteCount);
var backTask = outputStream.WriteAsync(outputWrite, 0, byteCount, cancelToken);
readFromInput = inputStream.ReadAsync(inputRead, 0, MaxMessageSize, cancelToken);
}
else
if (nextTask == readFromOutput)
{
byteCount = await nextTask;
OpDiag(Operation.OutboundRead, byteCount, outputRead);
var inputWrite = new byte[MaxMessageSize];
Array.Copy(outputRead, inputWrite, byteCount);
var backTask = inputStream.WriteAsync(inputWrite, 0, byteCount, cancelToken);
readFromOutput = outputStream.ReadAsync(outputRead, 0, MaxMessageSize, cancelToken);
}
}
}
}
