[Kamailio-Users] ERROR:tm:add_uac: maximum number of branches exceeded

[Daniel-Constantin Mierla]

On 12/2/09 6:15 PM, alex pappas wrote:
> That was the SOLUTION,
>
> I had configure in my FAILURE route *append_branch();* (in the 
> configuration that Panagiotis gave me ;-)  ) and also the 
> *ds_append_branch* had the default value *1*. When I changed the 
> *ds_append_branch=0 *i had NO errors.
>
> I got also a trace to be sure and everything looks good now!
> In the trace i see again many INVITEs but this time I don't get any 
> error. I understand that in the failure route with my original 
> settings I was appending actually 2 new branches , but that was the 
> problem or something else?
> Can you explain why that happen ?

yes, same destination was added more than once. You can trace the number 
of branches created by tm looking at top Via header in forwarded INVITE, 
branch parameter, last number (after dot).

Cheers,
Daniel

>
> On Wed, Dec 2, 2009 at 6:49 PM, Daniel-Constantin Mierla 
> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>
>     Hello,
>
>
>     On 12/2/09 5:42 PM, alex pappas wrote:
>>     Hi Daniel,
>>
>>     these are the data:
>>
>>     Server:: Kamailio (*1.5.3-notls* (x86_64/linux))
>>     Build:: mi/mi_core.c compiled on 20:05:04 Nov 15 2009 with gcc 4.3.2
>>     Flags:: STATISTICS, USE_IPV6, USE_TCP, DISABLE_NAGLE, USE_MCAST,
>>     SHM_MMAP, PKG_MALLOC, F_MALLOC, FAST_LOCK-ADAPTIVE_WAIT
>>     SVN:: 2:5954M
>>     Now:: Wed Dec  2 18:41:37 2009
>>     Up since:: Wed Dec  2 18:32:13 2009
>>     Up time:: 564 [sec]
>>
>     ok, this is stable.
>
>     So, you get one INVITE in and then you get 8 of them out? From
>     your explanation, you have fewer gateways in dispatcher groups.
>
>     Try to set ds_append_branch parameter to 0:
>     http://kamailio.org/docs/modules/1.5.x/dispatcher.html#id2468051
>
>     Cheers,
>     Daniel
>
>
>>
>>     Alex
>>
>>
>>
>>
>>     On Wed, Dec 2, 2009 at 6:36 PM, Daniel-Constantin Mierla
>>     <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>>
>>         Hello,
>>
>>         what version of kamailio are you running?
>>
>>         Cheers,
>>         Daniel
>>
>>
>>
>>         On 12/2/09 5:27 PM, alex pappas wrote:
>>>         Hi again,
>>>
>>>         By changing the parameters T1 and T2 in the TM module I
>>>         managed to have almost the half branches than before BUT
>>>         still I get the same Error and I try to send the call on
>>>         gateway N.
>>>
>>>         modparam("tm", "T2_timer", 2000)
>>>         modparam("tm", "T1_timer", 1000)
>>>
>>>
>>>         Thanks
>>>
>>>         Alex
>>>
>>>
>>>
>>>         On Wed, Dec 2, 2009 at 6:10 PM, alex pappas
>>>         <rebel.pappas at gmail.com <mailto:rebel.pappas at gmail.com>> wrote:
>>>
>>>             Hello there,
>>>
>>>             I'm using dispatcher to serial fork a call through many
>>>             gateways.
>>>             For a call to number 2XXXXXXXXX , first a try to connect
>>>             through gateways A,B,C after that D,F , after that E,R ,
>>>             after that M,N and finally after those K,L.
>>>
>>>             When the call is trying gateway N then I'm getting the
>>>             ERROR:tm:add_uac: maximum number of branches exceeded.
>>>
>>>             I found on internet that I'm exceeding the MAX_BRANCHES:
>>>
>>>             branch=t->nr_of_outgoings;
>>>             	if (branch==MAX_BRANCHES) {
>>>             		LOG(L_ERR, "ERROR:tm:add_uac: maximum number of branches exceeded\n");
>>>
>>>
>>>             		ret=E_CFG;
>>>             		goto error;
>>>             	}
>>>
>>>             >Froma trace I got , I see that kamailio is sending to each destination IP 8 INVITES and if there is no answer to that is continuing with next destination gateway sending also there 8 INVITES.
>>>
>>>
>>>             When the number of INVITES is 52 then I get this error.
>>>
>>>             Does anyone can suggest a way to change the MAX_BRANCHES MAX number ?
>>>             Is is important to keep open the INVITEs from the first gateways because is an LCR scenario and if I get an answer from these gateways is important to complete through them.
>>>
>>>
>>>
>>>             Any help is apreciated
>>>
>>>             Thanks
>>>
>>>             Alexandros
>>>
>>>
>>>                  
>>>
>>>
>>>
>>>
>>>         _______________________________________________
>>>         Kamailio (OpenSER) - Users mailing list
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>>>         http://lists.openser-project.org/cgi-bin/mailman/listinfo/users
>>
>>         -- 
>>         Daniel-Constantin Mierla
>>         *http://www.asipto.com/
>>              
>>
>>
>
>     -- 
>     Daniel-Constantin Mierla
>     *http://www.asipto.com/
>          
>
>
>
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-- 
Daniel-Constantin Mierla
* http://www.asipto.com/

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