[tram] Mirja Kühlewind's Yes on draft-ietf-tram-stunbis-16: (with COMMENT)
Mirja Kühlewind <ietf@kuehlewind.net> Mon, 16 April 2018 19:29 UTC
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From: Mirja Kühlewind <ietf@kuehlewind.net>
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Cc: draft-ietf-tram-stunbis@ietf.org, Gonzalo.Camarillo@ericsson.com, Tolga Asveren <tasveren@rbbn.com>, tram-chairs@ietf.org, tasveren@rbbn.com, tram@ietf.org
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Date: Mon, 16 Apr 2018 12:29:18 -0700
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Subject: [tram] Mirja Kühlewind's Yes on draft-ietf-tram-stunbis-16: (with COMMENT)
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Mirja Kühlewind has entered the following ballot position for draft-ietf-tram-stunbis-16: Yes When responding, please keep the subject line intact and reply to all email addresses included in the To and CC lines. (Feel free to cut this introductory paragraph, however.) Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html for more information about IESG DISCUSS and COMMENT positions. The document, along with other ballot positions, can be found here: https://datatracker.ietf.org/doc/draft-ietf-tram-stunbis/ ---------------------------------------------------------------------- COMMENT: ---------------------------------------------------------------------- 1) Maybe it would make sense to refer informationally to draft-ietf-tram-stun-pmtud in section 6.1? 2) sec 6.2.2: This sentence seems to assume that only one request is sent per TCP connection/each request sends out after a new SYN: "However, for a request/response transaction, if the client has not received a response by Ti seconds after it sent the SYN to establish the connection, it considers the transaction to have timed out.“ i don’t think that assumption would be correct. Maybe rephrase this sentence…? 3) Also section 6.2.2: Should the client send keep-alives if a connection is hold open but currently not used? If not, I guess further recommendation is needed to address the case where a transmission fails because an existing idle TCP connection was used that doesn’t work anymore. In this case, I'd say the recommendation would be to send a RST and try to open a new TCP connection. 4) Should section 9.2 maybe provide further guidance on the lifetime of the (server-selected) nonce? 5) I'm sure, I just missed something but how does a server know if a first request intends to use the Long-Term Credential Mechanism or not (see 9.2.3.1. and 9.2.4 I guess). Or is this pre-configured? 6) Section 6.3 says that this doc only specifies the procedures for the new spec in this document and subsequently says: "It checks [...] that the magic cookie field has the correct value..." However, given this spec obsoletes RFC5389, I think that section 11 should provide more guidance on how to handle "old" STUN messages. Or is the intention that an upgraded STUN server does not handle old requests anymore? If so that should be spelled out as well. 7) sec 14.5: "The value of the MESSAGE-INTEGRITY attribute is set to a dummy value." Should the dummy value be further specified? Also it looks like there was a compile problem on page 39. Is there text missing? 8) sec 17.6: Isn't "stuns 5349/upd" used for DTLS? If so, it should be registered!
- [tram] Mirja Kühlewind's Yes on draft-ietf-tram-s… Mirja Kühlewind
- Re: [tram] Mirja Kühlewind's Yes on draft-ietf-tr… Adam Roach
- Re: [tram] Mirja Kühlewind's Yes on draft-ietf-tr… Marc Petit-Huguenin
- Re: [tram] Mirja Kühlewind's Yes on draft-ietf-tr… Mirja Kuehlewind (IETF)