Re: [rtcweb] Fwd: New Version Notification for draft-kaufman-rtp-compatible-data-00.txt
Randell Jesup <randell1@jesup.org> Wed, 06 July 2011 03:20 UTC
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Subject: Re: [rtcweb] Fwd: New Version Notification for draft-kaufman-rtp-compatible-data-00.txt
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On 6/29/2011 8:50 PM, Matthew Kaufman wrote: > I wrote up a method for sending unreliable datagrams to the same port > as is being used for RTP, RTCP and STUN that does not conflict with > this usage. It also addresses the security issues involved in allowing > arbitrary datagrams to be sent. http://www.ietf.org/id/draft-kaufman-rtp-compatible-data-00.txt | One alternative considered was to encapsulate the arbitrary datagrams | within RTP as an RTP payload type. However the semantics associated | with RTP are not always appropriate, depending on the type of | arbitrary data being transmitted. This needs to be expanded on. Why are they not appropriate? (Not disagreeing, but state it please.) If this data traverses various SBC/midboxes/NATs-with-ALGs/etc, will the apparent "invalid" nature cause possible breakage? | 5. Security Considerations | | The contents of these messages SHOULD be encrypted. Reuse of the | keying used for an associated RTP session that is using the same IP | address and port MAY be an acceptable method of key specification and | cryptosystem choice. I'd say "The User Message Data of these messages"... to avoid confusion about encryption of the all-zeros 4-byte header. Also: should it say anything about authentication? Congestion control needs to be discussed, even if it's to say that it's the job of a higher or application layer to define. I do want to as part of rtcweb design make congestion handling be unified, whether or not we use a single port (though we probably should use 1 port). -- Randell Jesup randell-ietf@jesup.org
- [rtcweb] Fwd: New Version Notification for draft-… Matthew Kaufman
- Re: [rtcweb] Fwd: New Version Notification for dr… Stefan Håkansson LK
- Re: [rtcweb] Fwd: New Version Notification for dr… Randell Jesup
- Re: [rtcweb] Fwd: New Version Notification for dr… Matthew Kaufman
- Re: [rtcweb] Fwd: New Version Notification for dr… Stefan Håkansson LK