[1] and [2] study Skype. They mention that for cases where both peers are behind NATs Skype uses a variation of STUN falling back to a variation of TURN.
[1] "An Experimental Study of the Skype Peer-to-Peer VoIP System" Saikat Guha, Neil Daswani, Ravi Jain IPTPS 2006 [2] An Analysis of the Skype Peer-to-Peer Internet Telephony Protocol Salman A. Baset, Henning G. Schulzrinne Cheers! Thomas On Thu, Oct 26, 2006 at 05:15:11PM -0700, David Barrett wrote: > What's an acceptable setup time, and what are you currently seeing? I'm > working on a NAT layer and am seeing about 1600ms setup latency, which is > higher than I'd like, but probably acceptable for my needs. > > As for restricted NATs, nothing special needs to be done to connect them to > other restricted, fullcone, or static IPs. But they can't connect to > symmetric NATs without some work. I don't know how Skype handles it > (actually, I haven't heard anything about the NAT traversal of Skype -- any > idea what kind of connectivity it gets?), but I do know they use clients as > relay servers, so unless they're doing some tricky symmetric work (which > they probably are), they must be using relays. > > -david > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:p2p-hackers- > > [EMAIL PROTECTED] On Behalf Of Sylvio Drouin > > Sent: Thursday, October 26, 2006 4:28 PM > > To: [email protected] > > Subject: [p2p-hackers] libjingle and xmlrpc > > > > David > > > > Connection establishment time is a serious issue. I dont have data yet > > but I know just by the simple tests I did that it is problematic. > > Filling up the peer candidates address and caching them in regard to our > > hash table will help tremendously as well as completely removing any > > dependence on XMPP. > > > > How does Skype deal with restricted NAT? through relays? > > > > regards > > > > sylvio > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > p2p-hackers mailing list > > [email protected] > > http://lists.zooko.com/mailman/listinfo/p2p-hackers > > _______________________________________________ > p2p-hackers mailing list > [email protected] > http://lists.zooko.com/mailman/listinfo/p2p-hackers -- http://www.cs.ucr.edu/~trep
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