If i check my ACK messages sent from my LB to my proxy, to Route headers is present. So my ack has not been forwarded to my SBC. So i can't route all subsequent INVITE messages without using dispatcher for ACK messages.
ACK messages are in the same INVITE transaction ?
My SBC is asterisk, and does not insert Record-route headers. Is it a normal behaviour for an SBC ?
Regards.
2018-01-30 16:00 GMT+01:00 Daniel Tryba d.tryba@pocos.nl:
On Tue, Jan 30, 2018 at 11:14:18AM +0100, Loic Chabert wrote:
Thanks Daniel,
Your snippet code must be used in proxy/registrar or on LB ?
It's for the loadbalancer. The registrar also is a near default supplied config, only added support for Path to be used for REGISTERs and dispatcher.
The proxy/registrar should follow the same behaviour with the SBC and the lb ? Loose_route every request from sbc and dispatch request from lb to
sbc
?
As far as I understand it is simply based on loose routing for all messages after dispatching INVITEs with ds_*.
BTW my SBCs don't initiate calls to the registrar/proxies but to the loadbalancers (SIP domain via DNS/SRV/NAPTR)
UACa -> LB -> REGISTRAR/Proxy -> LB -> UACb UACa -> LB -> REGISTRAR/Proxy -> SBC -> UACb
UACa -> SBC -> LB -> REGISTRAR/Proxy -> LB -> UACb UACa -> SBC -> LB -> REGISTRAR/Proxy -> SBC -> UACb
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