Test.cs

        private static ReadOnlySpan<byte> NewLine => new byte[] { (byte)'\r', (byte)'\n' };
        static void Test()
        {
            //const ReadOnlySpan<byte> eol = new byte[] { 13, 10 };
            var data = new byte[]{72,84,84,80,47,49,46,49,32,50, 48, 48, 32, 79, 75, 13, 10
, 67, 111, 110, 116, 101, 110, 116, 45, 84, 121, 112, 101, 58, 32, 116, 101, 120, 116
, 47, 112, 108, 97, 105, 110, 59, 32, 99, 104, 97, 114, 115, 101, 116, 61, 117, 116, 102
, 45, 56, 13 };

            var ros = new ReadOnlySequence<byte>(data);
            var reader = new SequenceReader<byte>(ros);
            
            var header1 = reader.TryReadTo(out ReadOnlySpan<byte> version, (byte)' ');
            var header2 = reader.TryReadTo(out ReadOnlySpan<byte> status, (byte)' ');
            var newLine = reader.TryReadTo(out ReadOnlySpan<byte> line, NewLine);

            
        }