Hi Daniel, 

I need to access custom database tables (i.e. not default with kamailio)  from a lua script (extending kamailio.cfg). 

Processing any incoming SIP request starts with a lua function and that in turn call other functions - and each one needs database access for taking routing decision. This seems to be a huge performance issue (connecting/querying db in several functions for a sip invite). 

Could you please suggest

• Any global scope (loads only once during start-up, but valid for each routing) in kamailio, where the required tables could be cached.
• Or any other way to address this. 

Thanks in advance. 

On Tue, Jun 21, 2011 at 2:21 PM, Daniel-Constantin Mierla <miconda@gmail.com> wrote:

Hello,

to rewrite the r-uri you can use the function for setting PV value:

sr.pv.sets("$ru", "_here_is_new_uri_");

To add contact headers to reply, you should use:

sr.hdr.append_to_reply("Contact: <_here_is_your_uri_>\r\n");

Cheers,
Daniel

On 6/20/11 3:23 PM, Sharif Tanvir Rahman wrote:

Hello,

We plan to use Kamailio as redirect server. Corresponding contact list is to be fetched by a Lua script from DB. 

The problem is about calling the required 'rewriteuri' function:

1. From lua script. both 'sr.rewriteuri()' and 'sr.modf("rewriteuri", ...)" fails to write the 'contact' field.
2. I tried an alternative way; pushing the value from lua (e.g. sr.pv.sets("contact", "sip:...")) and got the value in the Kamailio.cfg ($var(contact)). But can't call the rewriteuri function with this variable's value as argument. This seems to be a general problem of calling a function from .cfg with a variable's value as parameter.

Any help much appreciated.

--
Sharif 

_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users@lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- 
Daniel-Constantin Mierla -- http://www.asipto.com
http://linkedin.com/in/miconda -- http://twitter.com/miconda

--
Sharif Tanvir

-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - http://asipto.com/u/katu
Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - http://asipto.com/u/kpw