[SR-Users] Strange behavior when rewriting "To" header from failure_route (kamailio - 3.0.2)

[Klaus Darilion]

Hi!

1. I never used subst so I do not know how it is supposed to work
2. Mangling To is often not needed, changing RURI is usually sufficient
3. If I need to change the To header, eg. for tsting purposes, I just 
delete the existing one and create a new one:
   remove_hf("To");
   append_hf("To: 
<sip:$dbr(alias_name=>[0,0])@$dbr(alias_domain=>[0,0])>\r\n");

regards
klaus

Am 08.06.2010 09:10, schrieb Kosilov Fedor:
> piece of code:
>
> ........
>
> failure_route[2] {
>
> if (!t_is_canceled()) {
> revert_uri();
> sql_query("main", "select username from subscriber where alias='$tU' and
> alias_seq='2'", "alias_name");
> sql_query("main", "select domain from subscriber where alias='$tU' and
> alias_seq='2'", "alias_domain");
>
> subst_uri('/^sip:.*@.*$/sip:$dbr(alias_name=>[0,0])@$dbr(alias_domain=>[0,0])/');
> subst('/^To:.*<sip:.*>/To:
> <sip:$dbr(alias_name=>[0,0])@$dbr(alias_domain=>[0,0])>\r/');
>   #<-----THIS ONE DOESN'T WORK PROPERLY
> sql_result_free("alias_name");
> sql_result_free("alias_domain");
> setflag(10);
> if (!lookup("location")) {
>   switch ($retcode) {
> case -1:
> case -3:
> t_reply("404", "Not Found");
> exit;
> case -2:
> exit;
>   }
> }
> append_branch();
>
> route(5);
> }
>
> }
>
> route[5] {
> if (!t_relay()) {
> sl_reply_error();
> }
> exit;
> }
>
>
> And with ngrep i can see:
>
> #
> U 10.10.10.10.:5060 -> 10.10.10.15:53286 <http://10.10.10.15:53286>
> INVITE sip:ncm0000a at 10.20.5.72:5060
> <http://sip:ncm0000a@10.20.5.72:5060> SIP/2.0.
> Record-Route: <sip:10.10.10.10;lr=on;ftag=D1D33F74-16CA;nat=yes>.
> Via: SIP/2.0/UDP 10.10.10.10;branch=z9hG4bKc1ce.a89602e5.1.
> Via: SIP/2.0/UDP 10.20.5.10:5060;rport=57078;branch=z9hG4bK6F2A7E0.
> Remote-Party-ID: <sip:85559955500 at 10.20.5.10
> <mailto:sip%3A85559955500 at 10.20.5.10>>;party=calling;screen=yes;privacy=off.
> From: <sip:9955500 at 10.20.5.10
> <mailto:sip%3A9955500 at 10.20.5.10>>;tag=D1D33F74-16CA.
> To: <sip:ncm0000b at domain.com <mailto:sip%3Ancm0000b at domain.com>>.To:
> <sip:ncm0000a at domain.com <mailto:sip%3Ancm0000a at domain.com>>.
> <---------------DUPLICATE HEADERS
> Date: Tue, 08 Jun 2010 06:39:41 GMT.
> Call-ID: 73CF85D3-71FF11DF-B5C1D8D5-9276F617 at 10.20.5.10
> <mailto:73CF85D3-71FF11DF-B5C1D8D5-9276F617 at 10.20.5.10>.
> Supported: 100rel,timer,resource-priority,replaces.
> Min-SE:  1800.
> Cisco-Guid: 1942740043-1912541663-2892365836-2242214896.
> User-Agent: Cisco-SIPGateway/IOS-12.x.
> Accept-Language: ru.
> Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER,
> SUBSCRIBE, NOTIFY, INFO, REGISTER.
> CSeq: 101 INVITE.
> Max-Forwards: 69.
> Timestamp: 1275979181.
> Contact: <sip:85559955500 at 10.20.5.10:57078
> <http://sip:85559955500@10.20.5.10:57078>>.
> Expires: 180.
> Allow-Events: telephone-event.
> Content-Type: application/sdp.
> Content-Disposition: session;handling=required.
> Content-Length: 401.
> ...............
>
> I'm trying to rewrite this one:  To: <sip:ncm0000b at domain.com
> <mailto:sip%3Ancm0000b at domain.com>>.
> with this one:                           To: <sip:ncm0000a at domain.com
> <mailto:sip%3Ancm0000a at domain.com>>.
>
>
> I'm a newbie, so, please, show me where is my mistake.
>
>
> Sincerely yours,
> Kosilov Fedor.
>
>
>
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