[sr-dev] [kamailio/kamailio] cscf_get_ue_via does not return UE via (#2864)

[Erhan Onur Sendag]

Hello @henningw,

I checked usage of cscf_get_ue_via function. And I saw ims_ipsec_pcscf, ims_qos, ims_registrar_pcscf module are using this function.

All of them are pcscf modules.

ims_usrloc_pcscf  keeps a hashtable  to keep the pcscf contacts. And hash code is calculated with UE's IP address.  To get UE's IP address we are currently using cscf_get_ue_via function.

In pull request , we will change the cscf_get_ue_via with cscf_get_ue_last_via in  ims_registrar_pcscf_registrar module only. So contact will be saved into hash table with the return value of cscf_get_ue_last_via. 

Since we will not change  ims_ipsec_pcscf and ims_qos modules, they will query hash table with the return value of cscf_get_ue_via.  Since these module will not use the same function to get UE's IP adress, they may get a different value and may not reach the contact in the hash table. because calculated hash code will be different.


 

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