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 satskiy.a@gmail.com __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions --
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-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com, https://www.csrpswitch.com Tel: +1-706-510-6800
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