public static int SeekEndOfChunkedStream(byte[] buffer, int start, int end) { while (start + 4 < end) { if (!ByteHelpers.ContainsPossibly(buffer, start, end, ref _zeroReturnVector)) { start += Vector <byte> .Count; continue; } var c = 0; while (start + 4 < end && c < Vector <byte> .Count) { if (buffer[start + 0] == 48 && buffer[start + 1] == 13 && buffer[start + 2] == 10 && buffer[start + 3] == 13 && buffer[start + 4] == 10) { return(start + 5); } c++; start++; } } return(-1); }