public async ValueTask ReceiveAsync(PooledMemoryStream readBuffer, int bytesToReceive, CancellationToken cancellation)
{
var left = bytesToReceive;
while (left != 0)
{
if (cancellation.IsCancellationRequested)
{
throw new TaskCanceledException();
}
left -= await readBuffer.WriteAsync(_mainStream, bytesToReceive, cancellation).ConfigureAwait(false);
}
}