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#### Type Of Change
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- [ ] PR should be backported to stable branches
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- [ ] Related to issue #XXXX (replace XXXX with an open issue number)
#### Description
**Use origin-host of CCR response as destination-host of subsequent CCR requests**
When connecting to a diameter node which using relay, it may load balance requests to
multiple servers for handling. This change ensures that subsequent requests are sent to
the same server.
**Honour AVP_Time_Quota_Threshold in CCR response**
Charging server indicates it want an interim update X number of seconds before all quota
has been used.
**Add new modparam «strip_plus_from_e164»**
The existing formatitng routine check if it's a tel: or sip: uri, and sets E.164
or SIP according to that. If it's E.164, it strips "tel:" too. A
subscription id with leading "+" is actually of type SIP.
I didn't want to make a breaking change here, so I introduced a new setting which
fixes the behaviour.
**Moved subscription id formatting into a common function**
For more clean code, and one place to make further adjustments.
**Handle CCR response without AVP_Validity_Time**
If missing, various places in the module reported immediate expire.
**Handle IMS_RAR (Re-auth) request from charging server**
Typical scenario is that there's a missing interim update, and the server want to
check if the session is still alive. At reception we try a lookup and if found, schedule a
new request.
**Handle IMS_ASR (Abort) request from charging server**
Similar handling as for re-auth, but for server-initiated termination of the call.
**Fixed issue with signed/unsigned int related to check for Expires header**
cscf_get_expires_hdr() returns signed (-1 for not found), while that value was added
to the outgoing diameter request unsigned. That again resulted in an Expires AVP with
a really large value, and was rejected by the charging server.
Most probably cscf_get_expires_hdr() should be changed to return unsigned since the value
theoretical can be that big, but since that is a common function for the ims modules it
would require more testing than I'm capable of right now.
**Use str_dup() and str_free() from ims_getters instead of locally defined**
Those were needed more places.
--
I'm a little bit unsure about updating a string allocated in shm, where the length
is changed (look in ims_ro.c, credit_control_session_callback()). Is the correct way to do
a shm_free() and then reallocate, or is there a more simple way of doing it?
You can view, comment on, or merge this pull request online at:
https://github.com/kamailio/kamailio/pull/3640
-- Commit Summary --
* cdp: Add support for re-auth on ro sessions initiated from charging server
* ims_charging: Various changes to make module compatible to other charging servers
-- File Changes --
M src/modules/cdp/acctstatemachine.c (2)
M src/modules/cdp/diameter_code_avp.h (2)
M src/modules/cdp/peerstatemachine.c (8)
M src/modules/cdp/session.c (2)
M src/modules/ims_charging/Ro_data.c (40)
M src/modules/ims_charging/Ro_data.h (5)
M src/modules/ims_charging/ccr.c (8)
M src/modules/ims_charging/config.h (1)
M src/modules/ims_charging/dialog.c (18)
M src/modules/ims_charging/doc/ims_charging_admin.xml (20)
M src/modules/ims_charging/ims_charging_mod.c (59)
M src/modules/ims_charging/ims_ro.c (234)
M src/modules/ims_charging/ims_ro.h (3)
M src/modules/ims_charging/ro_db_handler.c (43)
M src/modules/ims_charging/ro_db_handler.h (5)
M src/modules/ims_charging/ro_session_hash.c (45)
M src/modules/ims_charging/ro_session_hash.h (6)
M src/modules/ims_charging/ro_timer.c (8)
M utils/kamctl/mysql/ims_charging-create.sql (3)
-- Patch Links --
https://github.com/kamailio/kamailio/pull/3640.patch
https://github.com/kamailio/kamailio/pull/3640.diff
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