// Try to read 'length' bytes from stream or fail after timeout.
private async Task <int> ReadLengthAsync(Stream stream, byte[] array, int offset, int length)
{
int remaining = length;
int readLength;
do
{
readLength = await TaskTimeoutExtensions.TimeoutAfter(stream.ReadAsync(array, offset, remaining), TimeoutMilliseconds);
if (readLength <= 0)
{
break;
}
remaining -= readLength;
offset += readLength;
}while (remaining > 0);
if (remaining != 0)
{
_output.WriteLine("Expected {0} bytes but got {1}", length, length - remaining);
}
return(length - remaining);
}
