[OpenSIPS-Users] calling create_dialog() on failover

Richard Robson rrobson at greenlightcrm.com
Thu Jan 26 09:56:26 EST 2017

Hi Bogdan,

So I'd be better off creating the dialog on the initial INVITE?. Will 
this persist over the failure routes and the subsequent calls to the 
next gateway?



On 26/01/2017 14:27, Bogdan-Andrei Iancu wrote:
> Hi Richard,
> The dialog creation should be done before any forking. Creating it 
> during the forking may lead to bogus outcomes. So, be sure that the 
> "relay" route doesn;t do any dialog creation ...as it may be trigger 
> more than once for an INVITE. Also using match_dialog() may lead to 
> bogus results, as this function does more than matching - it updates 
> the internal dialog state machine, triggers callback.
> Regards,
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developer
> http://www.opensips-solutions.com
> On 01/25/2017 07:01 PM, Richard Robson wrote:
>> I may be answering my own question here, But I going to say Thay I 
>> should be using match_dialog to see if there is an existing dialog 
>> and only create one if there is not one already/
>> R
>> On 25/01/2017 16:42, Richard Robson wrote:
>>> I'm wanting to check rate limits and channel limits for calls over 
>>> several gateways. this I have working, but we are getting instances 
>>> of failures on upstream carriers. this is due to one carrier in 
>>> paricular not liking the CLIs our customers are calling from. In 
>>> this case the call comes back as a 403, which I want to failover 
>>> from the t_on_failure route to the next gateway. If I reuse my relay 
>>> route it it will have a subsequent create_dialog() it also does the 
>>> topology hiding and accounting in. Am I OK to recall the create 
>>> dialog and reuse the relay route or am i better to do a second route 
>>> to relay the call to the next gateway assuming that this will be the 
>>> same dialog from the original call.
>>> Regards,

Richard Robson
Greenlight Support
01382 843843
support at greenlightcrm.com

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