[OpenSER-Users] CANCEL generated by openser after SIP/SDP Status: 200 OK

[Jan ONDREJ (SAL)]

Hello,

On Wed, Sep 12, 2007 at 05:32:15PM +0200, Klaus Darilion wrote:
> 1. I have forgotten to tell you to use the "-W byline" switch too in
> ngrep (much more readable SIP logs)

I can resend you new logs if needed.

> 2. Nevertheless, I have found the error: In the openser proxy your 
> create a second branch: Take a look at the logs - there are 2 INVITEs 
> sent from openser to ser - the only different in these INVITEs is the 
> branch parameter in the topmost Via header.
> 
> The first is:
> branch=z9hG4bK41a.25464943.0
> the second is:
> branch=z9hG4bK41a.25464943.1
> 
> Thus, openser does parallel forking. Then, when Grandstream answers the 
> second branch (branch=z9hG4bK41a.25464943.1) openser will CANCEL the 
> first branch.

Right. There is no problem with CANCEL but with 2 INVITEs.

I have this in my openser log:

 2(13970) DEBUG: t_lookup_request: no transaction found
 2(13970) DBG: trans=0xb60d6e80, callback type 1, id 1 entered
 2(13970) DEBUG:dialog:build_new_dlg: new dialog on hash 2386
 2(13970) DBG: trans=0xb60d6e80, callback type 1, id 0 entered

Is this a right place where the second fork is done?

> Thus, you have either bug in your config or in your provisioning (maybe 
> you have the user twice in alias table or location table).

Which command can create this second INVITE? What I need to find in my
config?

This user is not local, it is found by ENUM. My ENUM configuration:
        if (uri=~"^sip:\+[0-9]+@") {
             if (enum_query("e164.arpa.")) {
                xlog("L_ERR", "ENUM[e164.arpa]: [$rm] from user $fu to $ru\n");
                route(5);
                return;  
             };
             if (enum_query("e164.arpa.", "voice")) {
                route(5);
                return;  
             };
             if (enum_query("e164.bts.sk.")) {
                route(5);
                return;  
             };
        };


Thanks.

		SAL