Re: [sip-clf] problem-statement and logging arbitrary SIP fields
Eric Burger <eburger@standardstrack.com> Wed, 13 April 2011 17:40 UTC
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From: Eric Burger <eburger@standardstrack.com>
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Date: Wed, 13 Apr 2011 13:40:42 -0400
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To: "Vijay K.Gurbani" <vkg@bell-labs.com>
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Cc: "sip-clf@ietf.org" <sip-clf@ietf.org>
Subject: Re: [sip-clf] problem-statement and logging arbitrary SIP fields
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WFM On Apr 12, 2011, at 5:10 PM, Vijay K. Gurbani wrote: > Folks: In the Prague IETF, it was decided that we will allow > the capability to log arbitrary SIP header fields and > header elements (like the Reason-Phrase) that are not > already part of the mandatory fields. > > I am ratifying this decision on the list; pragmatically, > what this means to the problem-statement draft is that it > will undergo a change as follows: > > OLD: (Section 8) > > The data model supports extensibility by providing the capability to > log "optional fields". Optional fields are those SIP header fields > (or field components) that are not mandatory (see Section 8.1 for the > mandatory field list). A specific representation format MAY decide > to explicitly maintain a representation-specific list of fields (or > field components) to log. All other fields that do not appear in the > list of mandatory fields (Section 8.1), nor do they appear in the > representation-specific list of optional fields, MUST be logged using > a vendor-specific extension mechanism (through the use of private > enterprise numbers). The specific syntax and semantics to be > accorded to optional fields, whether they are representation-specific > or use vendor-extension mechanisms MUST be defined by the specific > representation format used to generate the SIP CLF record. > Finally, [I-D.ietf-sipclf-format] is an example of a representation > format draft that provides an ASCII-based encoding scheme. > > NEW: (Section 8) > > The data model supports extensibility by providing the capability to > log "optional fields". Optional fields are those SIP header fields > (or field components) that are not mandatory (see Section 8.1 for the > mandatory field list). Optional fields may contain SIP headers or > other elements present in a SIP message (for example, the Reason- > Phrase element from the Status-Line production rule in RFC 3261 > [RFC3261]). Optional fields may also contain additional information > that a particular vendor desires to log. The specific syntax and > semantics to be accorded to optional fields MUST be defined by the > specific representation format used to generate the SIP CLF record. > Finally, [I-D.ietf-sipclf-format] is an example of a representation > format draft that provides an ASCII-based encoding scheme. > > In the new text, I have decided to stay away from specifying private > enterprise numbers for optional fields in the problem-statement > draft and am leaving it to the specific representation format to > outline this in more detail. Clearly, to ensure the least ambiguity > and most interoperability, it is in the best interest of a > representation format to choose a mechanism like the private enterprise > number (and draft-ietf-sipclf-format already does so). > > Please let me know of any comments for proceeding as outlined > above for the problem-statement draft. This is the last open issue > in problem-statement, and once we close this, the draft is in > a shape to be moved ahead. > > Thank you, > > - vijay > -- > Vijay K. Gurbani, Bell Laboratories, Alcatel-Lucent > 1960 Lucent Lane, Rm. 9C-533, Naperville, Illinois 60566 (USA) > Email: vkg@{bell-labs.com,acm.org} / vijay.gurbani@alcatel-lucent.com > Web: http://ect.bell-labs.com/who/vkg/ > _______________________________________________ > sip-clf mailing list > sip-clf@ietf.org > https://www.ietf.org/mailman/listinfo/sip-clf
- [sip-clf] problem-statement and logging arbitrary… Vijay K. Gurbani
- Re: [sip-clf] problem-statement and logging arbit… Eric Burger
- Re: [sip-clf] problem-statement and logging arbit… Peter Musgrave
- Re: [sip-clf] problem-statement and logging arbit… Gonzalo Salgueiro