[SR-Users] is $td.did avp a normal avp?

[Klaus Darilion]

Not helping with this issue - but having another question: what is 
$td.did? Is it a pseudo variable (as it starts with $)? Is it somehow 
related/derived to/from $td or is the '.' just a character like a-z?

thanks
klaus


Juha Heinanen wrote:
> domain module sets $td.did at lookup_domain call.  $td.did seems to be a
> normal avp, because i can print its value with xlog by referring to it
> as $avp(td.did).  however, its value is gone at failure route, which
> makes me suspect that $td.did is not really a normal avp.
> 
> in route block i have
> 
>     $avp(did) = $td.did;
>     xlog("L_INFO", "at t_relay: <td/td.did> = <$avp(did)/$avp(td.did)>\n");
>     if (t_relay()) exit;
> 
> branch route, onreply route, and failure route are set when the above
> t_relay() takes place.
> 
> at the end of branch route block, i have
> 
>     xlog("L_INFO", "at end of contact branches: <did/td.did> = <$avp(did)/$avp(td.did)>\n");
> 
> and at the beginning of onreply route block:
> 
>     xlog("L_INFO", "at beginning of onreply: <did/td.did> = <$avp(did)/$avp(td.did)>\n");
> 
> and at the beginning of failure route block:
> 
>     xlog("L_INFO", "at beginning of contact failure: <did/td.did = <$avp(did)/$avp(td.did)>\n");
> 
> when i make a call, i get to syslog:
> 
> Apr 22 15:53:27 sip /usr/sbin/sip-proxy[13706]: INFO: at t_relay: <td/td.did> = <test.fi/test.fi>
> Apr 22 15:53:27 sip /usr/sbin/sip-proxy[13706]: INFO: at end of contact branches: <did/td.did> = <test.fi/test.fi>
> Apr 22 15:53:27 sip /usr/sbin/sip-proxy[13708]: INFO: at beginning of onreply: <did/td.did> = <test.fi/<null>>
> Apr 22 15:53:27 sip /usr/sbin/sip-proxy[13705]: INFO: at beginning of contact failure: <did/td.did = <test.fi/<null>>
> 
> why is it that $avp(did) value has been preserved from route/branch
> route block to onreply/failure blocks, but value of $avp(td.did) is not?
> 
> i'll cc to jan in case he is not on this list.
> 
> -- juha
>     
> 
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