But how TCP is used then in such case ... like i described. Rockson Li (zhengyli) wrote: > Hi , > > I think the outbound draft means, you need two edge proxies, one for > calling party, the other one for called party. > And the two EPs would insert Record-Route with UA's specific flow token, > > But it would only work for incoming request, ie, route the req to UA. > EP just remove Route(which points itself for outgoing req) > > -Rockson > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Ivar Lumi > Sent: Monday, August 11, 2008 2:57 PM > To: [email protected] > Subject: [Sip-implementors] flow-token - draft-ietf-sip-outbound-13 > > Hi, > > Little help needed on understanding about flow-token. > > UA1 ---- NAT ----- PROXY/REGISTRAR ---- NAT ----- UA2 > > Both UA register with TCP. > > Flow 1 Flow 1 > UA1 ---- NAT ----- PROXY/REGISTRAR ---- NAT ----- UA2 > > Both UA keep TCP flows alive. > > > UA1 calls to UA2: > > INVITE UA2 ---- INVITE ------------------ INVITE > Record-Route: flowToken ... > > Dialog: Dialog: > Route: flowToke ------------------------ Route: flowToken > > > Now the part my brain won't get: > There are 2 flows involved, but flow token is common ..... . > Each UA must have own flow-token or flow-token must contain both flows > info. > (Because both UA behind NAT, so proxy must guide/reuse live flows) > > Any comments very welcome. > > Thanks, > > > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors >
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