Subject: Re: From Tag syntax

From: [email-masked]
Date: Wed, 2 Feb 2000 19:56:03 +0530

Hi,
My 2c :

Id prefer token for tag. Advantages: as you mentioned
Let the originator of the tag decide how he wants to correlate - I dont see
any reason why it _must_ be hex - infact its easy to simply
apply functions of say getpid()+time() or something and generate a
corresponding tag correlator

hgs> 1) If you are an implementor: does your implementation in any way
depend
hgs> on tag being hexadecimal?

No, it does not.

Regds
Arjun
--
Arjun Roychowdhury @ Hughes Software Systems

Henning Schulzrinne <[email-masked]> on 02/02/2000 07:37:50 PM

To:   [email-masked]
cc:

Subject:  From Tag syntax

I'm trying to reach closure on a minor syntax issue.

Currently, the "tag=" parameter is a hexadecimal string (plus dash).

It has been proposed

Advantage of the change:
- one fewer syntax type to worry about;
- currently, the similar-in-spirit Via branch parameter is a token, so
this would unify the two;
- makes it easy to encode information strings as base64;
- higher information density (base64 vs. base16)
- it's easy to forget this little hex limitation, so implementations may
need to be "forgiving" in any event if one major one gets it wrong;

Disadvantage:
- it's a change from RFC 2543 and not backwards-compatible.

Questions:

1) If you are an implementor: does your implementation in any way depend
on tag being hexadecimal?

2) Any other opinions?

Thanks.
--
Henning Schulzrinne   http://www.cs.columbia.edu/~hgs