https://www.kamailio.org/docs/modules/5.0.x/modules/nathelper.html#nathelper.f.fix_nated_contact ? With combination of alias and other parameter, means you can store full original contact header (encoded) in a Contact params as well. Yes, it brakes RFC, but you can handle it manually
Le lun. 14 juil. 2025 à 14:36, Antonio via sr-users < sr-users@lists.kamailio.org> a écrit : > BUT > When Kamailio forwards REGISTER to Upstream(Asterisk), it will contain > the REAL IP of the UAC > > so later if someone will dial UAC it will not path through Kamailio > > On Sat, Jul 12, 2025 at 9:32 PM Alex Balashov via sr-users < > sr-users@lists.kamailio.org> wrote: > >> Hi, >> >> Yes, that's exactly what those functions enable. >> >> When you receive the REGISTER request, you use set_contact_alias() / >> add_contact_alias() to add an `;alias` parameter to the Contact, which >> reflects the client's external IP/port/transport. You then pass that >> REGISTER request onto the registrar. >> >> When you get an incoming request from the registrar to the client, you >> use handle_ruri_alias() to read the `;alias` parameter and load the >> IP/port/transport values into the destination set ($du), while stripping >> the `;alias` parameter off the RURI. You then t_relay() the request, which >> will follow $du to the next hop read from the `;alias` parameter. >> >> -- Alex >> >> > On Jul 11, 2025, at 4:28 PM, Antonio <satski...@gmail.com> wrote: >> > >> > Thanks for the reply >> > >> > I want to use Kamailio as a proxy, but a smart one. >> > It doesn't store anything, but: >> > • Modifies REGISTER requests → adds the client's IP/port to Contact >> > • So when the PBX sends an INVITE back, Kamailio reads this data from >> the R-URI and forwards the call to the client >> > >> > Hope it makes sense. >> > >> > >> > On Fri, Jul 11, 2025 at 10:14 PM Alex Balashov via sr-users < >> sr-users@lists.kamailio.org> wrote: >> > Hi, >> > >> > The set_contact_alias() / handle_ruri_alias() functions from the >> `nathelper` module[1] are quite ready-made for this use-case, though you >> may need a more sophisticated approach if the upstream registrar does not >> support Path[2][3]. >> > >> > -- Alex >> > >> > [1] https://kamailio.org/docs/modules/6.0.x/modules/nathelper.html >> > >> > [2] https://datatracker.ietf.org/doc/html/rfc3327 >> > >> > [3] >> https://kamailio.org/docs/modules/6.0.x/modules/path.html#path.f.add_path >> > >> > > On Jul 11, 2025, at 6:19 AM, Antonio via sr-users < >> sr-users@lists.kamailio.org> wrote: >> > > >> > > Hi everyone, >> > > Do we have a ready-to-use Kamailio role or configuration for: >> > > >> > > “Kamailio as a Stateless Smart SIP Proxy”, >> > > Specifically one that uses Contact Header Encoding? >> > > >> > > That is — a proxy where Kamailio does not store registration state, >> > > but encodes the client’s IP and port into the Contact header during >> REGISTER, >> > > and later decodes it from the INVITE to forward the call back to the >> client. >> > > Thanks in advance! >> > > -- >> > > >> > > Antony >> > > satski...@gmail.com >> > > __________________________________________________________ >> > > Kamailio - Users Mailing List - Non Commercial Discussions -- >> sr-users@lists.kamailio.org >> > > To unsubscribe send an email to sr-users-le...@lists.kamailio.org >> > > Important: keep the mailing list in the recipients, do not reply only >> to the sender! >> > >> > -- >> > Alex Balashov >> > Principal Consultant >> > Evariste Systems LLC >> > Web: https://evaristesys.com, https://www.csrpswitch.com >> > Tel: +1-706-510-6800 >> > >> > __________________________________________________________ >> > Kamailio - Users Mailing List - Non Commercial Discussions -- >> sr-users@lists.kamailio.org >> > To unsubscribe send an email to sr-users-le...@lists.kamailio.org >> > Important: keep the mailing list in the recipients, do not reply only >> to the sender! >> > >> > >> > -- >> > >> > Antony >> > satski...@gmail.com >> >> -- >> Alex Balashov >> Principal Consultant >> Evariste Systems LLC >> Web: https://evaristesys.com, https://www.csrpswitch.com >> Tel: +1-706-510-6800 >> >> __________________________________________________________ >> Kamailio - Users Mailing List - Non Commercial Discussions -- >> sr-users@lists.kamailio.org >> To unsubscribe send an email to sr-users-le...@lists.kamailio.org >> Important: keep the mailing list in the recipients, do not reply only to >> the sender! >> > > > -- > > *Antony* > satski...@gmail.com > > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions -- > sr-users@lists.kamailio.org > To unsubscribe send an email to sr-users-le...@lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only to > the sender! > -- Best regards, Ihor (Igor)
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