public static ValueTask <int> ReadAsync(this IReadableChannel input, byte[] buffer, int offset, int count)
{
while (input.IsCompleted)
{
var fin = input.Completion.IsCompleted;
var inputBuffer = input.GetResult();
var sliced = inputBuffer.Slice(0, count);
sliced.CopyTo(buffer, offset);
int actual = sliced.Length;
inputBuffer.Consumed(sliced.End);
if (actual != 0)
{
return(new ValueTask <int>(actual));
}
else if (fin)
{
return(new ValueTask <int>(0));
}
}
return(new ValueTask <int>(input.ReadAsyncAwaited(buffer, offset, count)));
}
