[SR-Users] during registration nonce expired, after backwards time shift

[Daniel-Constantin Mierla]

Hello,

probably the module is using the time computed internally as start time
plus elapsed seconds (counted internally). We can introduce an option to
use the system time, which may add a bit of delay, but really
insignificant. I will look into it these days.

Cheers,
Daniel


On 18/08/15 22:44, Vasiliy Ganchev wrote:
> Hi list! 
> (sorry for sending first mail to wrong sub forum)
> Have a following issue: 
> Server with Kamailio restart with wrong time (why - this is separate part of
> my investigations), timeshift e.g. for 2 hours in feature. 
> After ntp daemon adjust correct time (move time backwards), Kamailio do not
> accept REGISTERs, pv_www_authenticate answer with code -4 (nonce expired)
>
> I've reade the description of: 
> http://kamailio.org/docs/modules/4.2.x/modules/auth.html#auth.p.nonce_expire
> and 
> http://kamailio.org/docs/modules/4.2.x/modules/auth.html#auth.p.nonce_auth_max_drift
>
> This descriptions mention situation with backwards timeshift from future. 
> As I understand, Kamailio do not authorise the registration, whose nonces
> where generated in future (before ntp shifted the time). But in my tests,
> Kamailio do not accept even REGISTER from UA, sent after time shift (with
> new nonces, that as I expected has to use correct time for nonce generation,
> and be authorised with no problem). 
>
> Only Kamailio process restart help to cope with the issue. 
>
> It looks like for nonce generating Kamailio use old time (in feature, that
> was before timeshift). 
>
> I wander, does the Kamailio behave in described case - as is expected? If I
> am wrong in some of my assumptions, please point out. 
>
> version: kamailio 4.2.5 
>
> Thank in advance! 
> Cheers!
>
>
>
>
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-- 
Daniel-Constantin Mierla
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