Thanks for your swift reply, Daniel.

I would also like to thank you again for the great training last week.

My main question was:

Why does forward() not take dynamic parameters? Should it not do so (in the future) to be in line with other functions? It was not difficult to work around, but I think it would be more logical if the function could use dynamic parameters like all the other functions I've used can do.

With kind regards,

Pan

----- Original Message -----

From: Daniel-Constantin Mierla

To: Pan B. Christensen

Cc: kamailio

Sent: Friday, December 03, 2010 11:14 AM

Subject: Re: [SR-Users] using forward() with variables

On 12/2/10 4:57 PM, Pan wrote:

Hello,

We are running Kamailio 1.5.

I'm trying to use the forward() function with a variable like this:

    forward($shv(voip1-edge1));

That fails to parse.

I then tried this, which I thought would fail:

    forward("$shv(voip1-edge1)");

That parsed correctly, but it then failed to resolve the domain '$shv(voip1-edge1)' as expected. Why can this function not use variables?

I tried to make a workaround by doing this:

    $du=$ru;
    $dd=$shv(voip1-edge1);
    forward();

That also failed. Why is $du writable but $dd is not?

I then made a fourth attempt, which seems to work:

    $du="sip:" + $shv(voip1-edge1);
    forward();
indeed, the last version is the one that works.

forward() does not take dynamic parameters, only static string values. $dd is not writable because is just part of $du which you can set like you did. $du refers to outbound proxy address (destination uri) and there matters only host, port and transport, all the other attributes in $du have no relevance.

Cheers,
Daniel
-- 
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Jan 24-26, 2011, Irvine, CA, USA
http://www.asipto.com