[OpenSIPS-Users] Odd opensips REGISTER/INVITE behavior for many simultaneous users

[James Tranovich]

Addendum: we have a detailed log here:

https://gist.github.com/captdeaf/5580914

Thanks!

James


On Tue, May 14, 2013 at 3:56 PM, James Tranovich
<james at openhorizonlabs.com>wrote:

> Hello all --
>
> First, we love opensips :)
>
> Lately, we have been running into a strange issue which seems to be
> related to handling a ton of REGISTER messages. Basically, we have a test
> script that tries to simulate about 50 to 100 simultaneous calls; they all
> register en masse and then randomly start placing calls to another test
> number (after a random time interval). Every once in a while, though, an
> INVITE won't go through because opensips apparently can't find that phone
> number. Oddly enough, if we do an "opensipsctl online" immediately
> before/after, that command shows that, in fact, the recipient's number is
> present and presumably already registered. SIP logs/ngrep tracing confirm
> this.
>
> I was wondering if this is a known bug. This behavior only happens when
> registering a certain number of calls at once; if we test with a low number
> of calls (10, say), this behavior does not happen. It may be that we are
> spamming opensips with too many REGISTER messages (authentication is
> required, so two REGISTER messages are sent, the first w/o auth, the second
> with auth). But I don't see why opensips should have problems with this.
>
> Any thoughts on this? Is this a known issue already? (Searching for this
> issue didn't yield much). Thanks!
>
> James
>
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