[SR-Users] Try backup route

[Klaus Darilion]

Post your failure route (remove credential data)

Do you have a t_relay() at the end of the failure_route?

regards
Klaus

Am 22.04.2011 01:31, schrieb qmail at top-consulting.net:
> 
> I'm using Kamailio 3.1
> 
> I have a custom routing statement called MYROUTE which is placed like this:
> 
> route {
>   ...
>   route (MYROUTE);
>   route (RELAY);
> }
> 
> Inside MYROUTE I do some custom SQL checking that basically selects the
> least cost provider for the ongoing call. The MYROUTE routine sets the
> $rU, $rd and $rp variables in case a provider has been found for the
> dialed number or fails with Sip code 404.
> 
> All this works perfectly, except in my database I also have an alternate
> provider that I only wish to use as backup in case the main provider
> returns a 5XX code.
> 
> How do I get Kamailio to try the second provider after the first one
> failed ?
> 
> So far I've tried setting up a t_on_failure() command & routine that
> picks up the backup provider from the database and sets $rU, $rd & $rp
> variables. This works fine too except the call is never forwarded to the
> second provider. It stops with this error I believe:
> 
>   0(11460) DEBUG: <core> [parser/msg_parser.c:167]: get_hdr_field: cseq
> <CSeq>: <1> <ACK>
>   0(11460) DEBUG: <core> [parser/msg_parser.c:201]: DEBUG: get_hdr_body
> : content_length=0
>   0(11460) DEBUG: <core> [parser/msg_parser.c:103]: found end of header
>   0(11460) DEBUG: maxfwd [mf_funcs.c:66]: max_forwards header not found!
>   0(11460) DEBUG: <core> [parser/parse_to.c:174]: DEBUG: add_param:
> tag=4a2aab60
>   0(11460) DEBUG: <core> [parser/parse_to.c:803]: end of header reached,
> state=29
>   0(11460) DEBUG: siputils [checks.c:76]: totag found
>   0(11460) DEBUG: rr [loose.c:108]: No Route headers found
>   0(11460) DEBUG: rr [loose.c:910]: There is no Route HF
> 
> I believe the problem is that t_on_failure() does not keep all the
> proper data associated with the call and that's why it fails Maybe
> t_on_failure isn't the right command to use here after all (?).
> 
> So to resume. Here's what I wish to achieve:
> 
> 1. Call comes through
> 2. Goes through MYROUTE where a provider is selected
> 3. Call is attempted through provider found in #2
> 4. If call fails , select another provider
> 5. Call is attempted through provider found in #4
> 
> Thanks!
> 
> 
> 
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