Re: [rtcweb] STUN for keep-alive
Christer Holmberg <christer.holmberg@ericsson.com> Wed, 14 September 2011 17:18 UTC
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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: 'Eric Rescorla' <ekr@rtfm.com>, Harald Alvestrand <harald@alvestrand.no>
Date: Wed, 14 Sep 2011 19:20:33 +0200
Thread-Topic: [rtcweb] STUN for keep-alive
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] STUN for keep-alive
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Hi, >One new concern in this context is maintaining the consent freshness. >The browser needs to be sure that the recipient of traffic is stil responding in a way that can't be forged. It's likely RTCP provides this (though we'd need to analyze to be sure) but perhaps better would be to mandate STUN checks >at enough frequency that you get some sort of level of freshness.... maybe every 2 minutes or something. Please note that the STUN keep-alives are implemented using STUN indication messages, so there are no replies (nor does the receiver perform an authentication check). Regards, Christer On Wed, Sep 14, 2011 at 9:14 AM, Harald Alvestrand <harald@alvestrand.no> wrote: > On 09/14/11 15:07, Christer Holmberg wrote: >> >> Hi, >> >>>> |Sure, but there is still a max time between the keep-alives. >>> >>> You are free to set it to a very long duration that disables >>> keepalives for all practical purposes (assuming such duration is >>> represented by a 32-bit unsigned integer you can set it to >>> ~136 years). >> >> Yes, but at the end of the day something has to be sent in order to >> keep the NAT binding open. >> >>>> |Using e.g. RTP, the media handler would not have to be prepared to >>>> |receive the STUN keep-alives in the first place, it could simply >>>> |just relay whatever comes on the media plane. >>> >>> If the media handles can handle STUN binding requests efficiently I >>> don't see why they can't handle STUN binding indications >>> (keepalives) in a similar manner. >> >> I believe it knows when to expect those. But, in any case, the main >> reason behind the proposal is to decrease the number of STUN requests. > > I think it's a more urgent desire that we should minimize the number > of variants of protocols in use. > Defining a variant of ICE that modifies the keepalive mechanism seems > to me like a Bad Idea. > > Harald > > _______________________________________________ > rtcweb mailing list > rtcweb@ietf.org > https://www.ietf.org/mailman/listinfo/rtcweb >
- [rtcweb] STUN for keep-alive Christer Holmberg
- Re: [rtcweb] STUN for keep-alive Muthu Arul Mozhi Perumal (mperumal)
- Re: [rtcweb] STUN for keep-alive Christer Holmberg
- Re: [rtcweb] STUN for keep-alive Muthu Arul Mozhi Perumal (mperumal)
- Re: [rtcweb] STUN for keep-alive Christer Holmberg
- Re: [rtcweb] STUN for keep-alive Muthu Arul Mozhi Perumal (mperumal)
- Re: [rtcweb] STUN for keep-alive Christer Holmberg
- Re: [rtcweb] STUN for keep-alive Jonathan Lennox
- Re: [rtcweb] STUN for keep-alive Randell Jesup
- Re: [rtcweb] STUN for keep-alive sisalem
- Re: [rtcweb] STUN for keep-alive Magnus Westerlund
- Re: [rtcweb] STUN for keep-alive Harald Alvestrand
- Re: [rtcweb] STUN for keep-alive Eric Rescorla
- Re: [rtcweb] STUN for keep-alive Christer Holmberg
- Re: [rtcweb] STUN for keep-alive Göran Eriksson AP
- Re: [rtcweb] STUN for keep-alive Eric Rescorla
- Re: [rtcweb] STUN for keep-alive Dan Wing
- Re: [rtcweb] STUN for keep-alive Dan Wing
- Re: [rtcweb] STUN for keep-alive Dzonatas Sol
- Re: [rtcweb] STUN for keep-alive Eric Rescorla
- Re: [rtcweb] STUN for keep-alive Dan Wing
- Re: [rtcweb] STUN for keep-alive Dzonatas Sol
- Re: [rtcweb] STUN for keep-alive Harald Alvestrand
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Olle E. Johansson
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Hadriel Kaplan
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Olle E. Johansson
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Hadriel Kaplan
- Re: [rtcweb] STUN for keep-alive Magnus Westerlund
- [rtcweb] consent freshness [was RE: STUN for keep… Dan Wing
- Re: [rtcweb] consent freshness [was RE: STUN for … Magnus Westerlund
- Re: [rtcweb] consent freshness [was RE: STUN for … Dan Wing
- Re: [rtcweb] consent freshness [was RE: STUN for … Eric Rescorla
- Re: [rtcweb] consent freshness [was RE: STUN for … Muthu Arul Mozhi Perumal (mperumal)
- Re: [rtcweb] STUN for keep-alive Randell Jesup
- Re: [rtcweb] consent freshness [was RE: STUN for … Magnus Westerlund
- Re: [rtcweb] STUN for keep-alive Magnus Westerlund
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Iñaki Baz Castillo
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Magnus Westerlund
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Hadriel Kaplan
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Magnus Westerlund
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Hadriel Kaplan
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Colin Perkins
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Hadriel Kaplan
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Iñaki Baz Castillo
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Hadriel Kaplan
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Colin Perkins
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Magnus Westerlund
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Hadriel Kaplan
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Iñaki Baz Castillo
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Iñaki Baz Castillo
- Re: [rtcweb] consent freshness [was RE: STUN for … Muthu Arul Mozhi Perumal (mperumal)
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Magnus Westerlund
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Magnus Westerlund
- Re: [rtcweb] consent freshness [was RE: STUN for … Magnus Westerlund
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Hadriel Kaplan
- Re: [rtcweb] consent freshness [was RE: STUN for … Muthu Arul Mozhi Perumal (mperumal)
- Re: [rtcweb] consent freshness [was RE: STUN for … Randell Jesup
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Magnus Westerlund
- Re: [rtcweb] consent freshness [was RE: STUN for … Magnus Westerlund
- Re: [rtcweb] consent freshness [was RE: STUN for … Randell Jesup
- Re: [rtcweb] STUN for keep-alive Cullen Jennings
- Re: [rtcweb] STUN for keep-alive Michael Tüxen
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Hadriel Kaplan
- Re: [rtcweb] consent freshness [was RE: STUN for … Magnus Westerlund
- Re: [rtcweb] consent freshness [was RE: STUN for … Harald Alvestrand
- Re: [rtcweb] consent freshness [was RE: STUN for … Stefan Håkansson LK
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Olle E. Johansson
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Iñaki Baz Castillo
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Harald Alvestrand
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Iñaki Baz Castillo
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Harald Alvestrand
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Iñaki Baz Castillo
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Harald Alvestrand
- Re: [rtcweb] STUN for keep-alive - RTCP-less appl… Iñaki Baz Castillo