[sr-dev] domain attributes

[Jan Janak]

On 02-07 16:42, Juha Heinanen wrote:
> Jan Janak writes:
> 
>  > So, the following example
>  > 
>  >   lookup_domain("$fd", "@from.uri.host");
> 
> you didn't answer, can the above be also written as:
> 
>     lookup_domain("$fd", "$fd");
> 
> if not, why?

Yes it can. In this particular case the function will assume that the domain
name to be looked up is stored in the AVP $fu.fd. If the AVP identifiers does
not contain the flags before the delimiting '.' then 'fu' is assumed. So the
function will try to retrieve the domain name from that AVP and if it does not
exist (which is likely) then the function returns -1.

Some more examples:

lookup("$fd", "iptel.org")    # lookup the iptel.org domain name
lookup("$fd", "@to.uri.host") # lookup the hostname part of To header URI

# The following two are equivalent
lookup("$fd", "$abcd)         # lookup the domain stored in "abcd" AVP
lookup("$fd", "$fu.abcd)      # lookup the domain stored in "abcd" AVP

  Jan.