Re: [DNSOP] HTTPS and SVBC key names.

On Thu, 16 Jul 2020 at 21:17, Ben Schwartz <bemasc@google.com> wrote:

>
> Quotes are optional, as with <character-string>.  Quotes are only required
> if the value contains whitespace.
>

I was trying to establish if the quotes indicated the data type.  Clearly
not.

> The presentation format is optimized for humans and the wire format is
>>> optimized for machines. In particular, when using the named keys it's not
>>> obvious what the numeric ordering is, so keeping them in order when editing
>>> a zone file by hand would be hard.
>>>
>>
  blog.cloudflare.com. 300 IN HTTPS ( 1  .

key1=\005\104\051\045\050\057\005\104\051\045\050\056\005\104\051\045\050\055\002\104\050
     key4=\104\018\026\046\104\018\027\046

key6=\038\006\071\000\000\000\000\000\000\000\000\000\104\018\026\046\038\006\071\000\000\000\000\000\000\000\000\000\104\018\027\046
     )

"optimized" is not the word which springs to this human's mind.
IMHO, tarted up RFC3597 format is easier to read.

Example:

    use Net::DNS;

    my $rr = new Net::DNS::RR <<'END';
    example.net.        300     IN      HTTPS   1 target.example.net.
        mandatory=key0,key1,alpn,no-default-alpn,key99  ; with duplications
and other sins
        alpn=h3-29,h3-28,h3-27,h2
        no-default-alpn
        port=1234
        ipv4hint=192.0.2.1,192.0.2.2
        echconfig=base64string
        ipv6hint=2001:DB8::1,2001:DB8::2
    END

    $rr->print;

produces:

    example.net.    300     IN      HTTPS   ( \# 126 0001
        06746172676574076578616d706c6503 6e657400 ; target.example.net.
        0000 0004 00010002
        0001 0015 0568332d32390568332d32380568332d 3237026832
        0002 0000
        0003 0002 04d2
        0004 0008 c0000201c0000202
        0005 0009 6dab1eeb8b2dae29e0
        0006 0020 20010db8000000000000000000000001
20010db8000000000000000000000002
        )

Observations and complaints gratefully received.

--Dick

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