async Task FlushAsync(bool doAsync, CancellationToken cancellationToken)
{
CheckDisposed();
if (outputIndex == 0)
{
return;
}
try {
if (doAsync)
{
await Stream.WriteAsync(output, 0, outputIndex, cancellationToken).ConfigureAwait(false);
await Stream.FlushAsync(cancellationToken).ConfigureAwait(false);
}
else
{
var network = NetworkStream.Get(Stream);
network?.Poll(SelectMode.SelectWrite, cancellationToken);
Stream.Write(output, 0, outputIndex);
Stream.Flush();
}
logger.LogClient(output, 0, outputIndex);
outputIndex = 0;
} catch (Exception ex) {
IsConnected = false;
if (!(ex is OperationCanceledException))
{
cancellationToken.ThrowIfCancellationRequested();
}
throw;
}
}
async Task WriteAsync(byte[] buffer, int offset, int count, bool doAsync, CancellationToken cancellationToken)
{
CheckDisposed();
ValidateArguments(buffer, offset, count);
try {
var network = NetworkStream.Get(Stream);
int index = offset;
int left = count;
while (left > 0)
{
int n = Math.Min(BlockSize - outputIndex, left);
if (outputIndex > 0 || n < BlockSize)
{
// append the data to the output buffer
Buffer.BlockCopy(buffer, index, output, outputIndex, n);
outputIndex += n;
index += n;
left -= n;
}
if (outputIndex == BlockSize)
{
// flush the output buffer
if (doAsync)
{
await Stream.WriteAsync(output, 0, BlockSize, cancellationToken).ConfigureAwait(false);
}
else
{
network?.Poll(SelectMode.SelectWrite, cancellationToken);
Stream.Write(output, 0, BlockSize);
}
logger.LogClient(output, 0, BlockSize);
outputIndex = 0;
}
if (outputIndex == 0)
{
// write blocks of data to the stream without buffering
while (left >= BlockSize)
{
if (doAsync)
{
await Stream.WriteAsync(buffer, index, BlockSize, cancellationToken).ConfigureAwait(false);
}
else
{
network?.Poll(SelectMode.SelectWrite, cancellationToken);
Stream.Write(buffer, index, BlockSize);
}
logger.LogClient(buffer, index, BlockSize);
index += BlockSize;
left -= BlockSize;
}
}
}
} catch (Exception ex) {
IsConnected = false;
if (!(ex is OperationCanceledException))
{
cancellationToken.ThrowIfCancellationRequested();
}
throw;
}
}