[Sip] Comments to the TOTE draft
Miguel Garcia <Miguel.Garcia@nsn.com> Wed, 27 February 2008 11:20 UTC
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Date: Wed, 27 Feb 2008 13:19:12 +0200
From: Miguel Garcia <Miguel.Garcia@nsn.com>
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Subject: [Sip] Comments to the TOTE draft
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Here are some comments to the TOTE draft: 1. In the Introduction the draft mentions three general purpose mechanisms that allow a pair of agents to communicate data during a session. However it fails to name the most relevant work for this draft, which is the file transfer mechanism, an MMUSIC WG item: http://www.ietf.org/internet-drafts/draft-ietf-mmusic-file-transfer-mech-06.txt 2. Then, I believe most of what the draft proposes can be done with the above draft. For good or for bad, the file transfer mechanism does not really define a new file transfer protocol as TOTE does, but reuses the existing MSRP. 3. I don't think I have seen the requirements for this draft. So, I cannot really evaluate why the file transfer mechanism is able to meet these requirements, and I cannot evaluate if MSRP is able to meet these requirements. The requirements corresponding to the file transfer mechanism were posted way back in this draft: http://tools.ietf.org/draft/draft-isomaki-sipping-file-transfer/draft-isomaki-sipping-file-transfer-01.txt 4. Assuming that there is a need for a new protocol for transferring files between to endpoints, I would encourage to re-use existing work. In particular, the file transfer mechanism says: In principle it is possible to use the SDP extensions defined here and replace MSRP with any other similar protocol that can carry MIME objects. This kind of specification can be written as a separate document if the need arises. Essentially, such protocol should be able to be negotiated on an SDP offer/answer exchange (RFC 3264 [RFC3264]), be able to carry MIME objects between two endpoints, and use a reliable transport protocol (e.g., TCP). For what I read, TOTE will qualify for such alternative protocol, but again, we need to understand the requirements that makes the need for yet another file transfer protocol. 5. On a slightly different topic. The draft also mentions Shared Browsing. I have recently put a draft that describes how to do collaboration between endpoints, and one of the topics is Shared Browsing. The draft is this one: http://www.ietf.org/internet-drafts/draft-garcia-mmusic-sdp-collaboration-00.txt Section 4.2 discusses the topic, and proposes to use the file transfer mechanism for sending those URL objects between endpoints. 6. I've been told that in German language TOTE means DEATH, so, perhaps that name should be changed. So, all in all, I think we need more discussion on the requirements with respect existing work, and try to identify the delta that makes the need for this draft. /Miguel -- Miguel A. Garcia tel:+358-50-4804586 Nokia Siemens Networks Espoo, Finland _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use sip-implementors@cs.columbia.edu for questions on current sip Use sipping@ietf.org for new developments on the application of sip
- [Sip] Comments to the TOTE draft Miguel Garcia
- Re: [Sip] Comments to the TOTE draft Jonathan Rosenberg
- Re: [Sip] Comments to the TOTE draft Miguel Garcia
- Re: [Sip] Comments to the TOTE draft Jonathan Rosenberg
- Re: [Sip] Comments to the TOTE draft Miguel Garcia
- Re: [Sip] Comments to the TOTE draft Hadriel Kaplan
- Re: [Sip] Comments to the TOTE draft Paul Kyzivat
- Re: [Sip] Comments to the TOTE draft Hadriel Kaplan
- Re: [Sip] Comments to the TOTE draft Jonathan Rosenberg
- Re: [Sip] Comments to the TOTE draft Adam Roach
- [Sip] Canceling a file transfer [Was Re: Comments… Miguel Garcia
- [Sip] Comments on TOTE Markus.Isomaki
- Re: [Sip] Comments on TOTE Salvatore Loreto
- Re: [Sip] Comments on TOTE Hadriel Kaplan
- Re: [Sip] Comments on TOTE Sean Olson
- Re: [Sip] Comments on TOTE Hadriel Kaplan
- Re: [Sip] Comments on TOTE Sean Olson
- Re: [Sip] Comments on TOTE Christer Holmberg
- Re: [Sip] Comments on TOTE Hadriel Kaplan