Hello Daniel,

Thanks for your reply. I did some debugging, I found that I am getting error like this, earlier this log was in DBG mode, changed to error and then I ran the load.. "auth:pre_auth: Invalid nonce value received (ret 2)" Problem is that this issue getting simulated every time. I am using auth module version of kamailio 4.1.5 , since I checked with latest kamailio version 4.3.2 , I didn't find any differences in this module. Please find my finding below

Auth/nonce.c:check_nonce()

b_nonce2_len=calc_bin_nonce_md5(&b_nonce2, cfg, secret1, secret2, msg); if (!memcmp(&b_nonce.n.md5_1[0], &b_nonce2.n.md5_1[0], 16)) // here where condition is getting failed and it is returning 2.

Regards Surendra

Hello,

are there any error messages in the syslog?

Maybe setting debug level for auth modules to 3 and looking at logs will help to reveal what is happening. Be sure syslog is in async mode, otherwise it will slow down processing.

Cheers, Daniel

On 16/10/15 08:42, Surendra.P wrote:

Hello Daniel,

            I have a concern regarding auth module, I am running

2000 TPS for 1000000 subscribers, using SIPP. What I observed when you run small load like 500 TPS, everything get passed, but for 2000 TPS

With same subscriber.csv file some of the subscribers getting challenged. May I this why auth module is behaving like this.. below are the parameters which I configured in auth module

modparam("auth", "nonce_expire", 3600), rest all parameters default values.

Regards

Surendra