I attach a Wireshark dump
2013/12/13 Flavio Battimo <flaviobatt...@gmail.com>: > Hello, > > working on Kamailio SCSCF module, when I receive an INVITE the serving > module should find the corresponding ICSCF to forward the INVITE. In > order to do this it should perform a NAPTR query, followed by a DNS > SRV query and a DNS A query. > > In our case the serving has the following behavior: > 1) it CORRECTLY make NAPTR query > 2) it send an SRV query to resolve ICSCF service port having invalid > response 4 times. > > After 4 times, so 20 seconds, it sends INVITE message to ICSCF at > default port 5060. > SRV query contains a null name, shown as <Root> in Wireshark. Current > DNS application (MyDNS) answer with a not implemented response. > > I expect that the serving CSCF try to resolve the ICSCF making an SRV > query and an A query to discover the service port and ip address using > the domain returned by NAPTR query. > > I have two questions: > It seems that SRV query is not valid, because it's not based on SIP > domain, do you think it's correct? > > At least, is it possible to configure s-cscf to force an INVITE to be > sent always to the same interrogating? > > -- > Flavio Battimo > flavio.batt...@gmail.com > fbatt...@meetecho.com > skype: flaviobattimo -- Flavio Battimo flavio.batt...@gmail.com fbatt...@meetecho.com skype: flaviobattimo
kamailio-srv-query.pcapng
Description: Binary data
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