[Kamailio-Users] lcr module creating extra branch

[Jon Bonilla (Manwe)]

Hi


I am using Kamailio 3.0.1 and experiencing a strange behaviour of the lcr
module. In short: Using next_gw() function makes my server to send two INVITEs
to different destinations!

The INVITE Kamailio receives is like:

R=sip:4644235465675757 at 77.77.77.77
F=sip:manwe2 at 77.77.77.77
T=sip:4644235465675757 at 77.77.77.77



To try this I have set this in my gw table:

sercmd lcr.dump_gws
{
        lcr_id: 1
        grp_id: 17
        ip_addr: 91.121.117.27
        hostname: sindominio.net
        port: 5080
        scheme: sip
        transport: UDP
        strip: 0
        tag: 
        weight: 1
        flags: 37
        defunct_until: 268313248
}
sercmd lcr.dump_lcrs
{
        lcr_id: 1
        prefix: 
        from_uri: 
        grp_id: 17
        priority: 1
}


Hostname and ip_addr don't match (sindominio.net points to 82.144.4.26). What I
capture leaving Kamailio is:


U 2010/04/08 17:51:09.614055 77.77.77.77:5060 -> 91.121.117.27:5080
INVITE sip:+4644235465675757 at 77.77.77.77 SIP/2.0'
Record-Route:
<sip:77.77.77.77;lr=on;ftag=hgtcn;nat=yes;vsf=czFwOgs5JCAEJEYoJGk3ajxNYmBrPBYC>'
Via: SIP/2.0/UDP 77.77.77.77;branch=z9hG4bK90e8.cd3135e1.0' Via: SIP/2.0/UDP
10.0.0.92;received=91.115.172.34;rport=53658;branch=z9hG4bKiwibmejv'
Max-Forwards: 69' To: <sip:4644235465675757 at 77.77.77.77>'
From: "1102" <sip:1102 at 77.77.77.77>;tag=hgtcn'
Call-ID: qxvyddwlnmurqvi at multivac'
CSeq: 571 INVITE'
Contact: <sip:manwe2 at 91.115.172.34:53658>'
Content-Type: application/sdp'
Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,PRACK,REFER,NOTIFY,SUBSCRIBE,INFO,MESSAGE'
Supported: replaces,norefersub,100rel'
User-Agent: Twinkle/1.4.2'
Content-Length: 226'
'
v=0'
o=twinkle 1296734594 70729915 IN IP4 77.77.77.77'
s=-'
c=IN IP4 77.77.77.77'
t=0 0'
m=audio 38232 RTP/AVP 8 101'
a=rtpmap:8 PCMA/8000'
a=rtpmap:101 telephone-event/8000'
a=fmtp:101 0-15'
a=ptime:20'
a=nortpproxy:yes'

#
U 2010/04/08 17:51:09.614074 77.77.77.77:5060 -> 82.144.4.26:5060
INVITE sip:+4644235465675757 at sindominio.net SIP/2.0'
Record-Route:
<sip:77.77.77.77;lr=on;ftag=hgtcn;nat=yes;vsf=czFwOgs5JCAEJEYoJGk3ajxNYmBrPBYC>'
Via: SIP/2.0/UDP 77.77.77.77;branch=z9hG4bK90e8.cd3135e1.1' Via: SIP/2.0/UDP
10.0.0.92;received=91.115.172.34;rport=53658;branch=z9hG4bKiwibmejv'
Max-Forwards: 69' To: <sip:4644235465675757 at 77.77.77.77>'
From: "1102" <sip:1102 at 77.77.77.77>;tag=hgtcn'
Call-ID: qxvyddwlnmurqvi at multivac'
CSeq: 571 INVITE'
Contact: <sip:manwe2 at 91.115.172.34:53658>'
Content-Type: application/sdp'
Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,PRACK,REFER,NOTIFY,SUBSCRIBE,INFO,MESSAGE'
Supported: replaces,norefersub,100rel'
User-Agent: Twinkle/1.4.2'
Content-Length: 226'
'
v=0'
o=twinkle 1296734594 70729915 IN IP4 77.77.77.77'
s=-'
c=IN IP4 77.77.77.77'
t=0 0'
m=audio 38232 RTP/AVP 8 101'
a=rtpmap:8 PCMA/8000'
a=rtpmap:101 telephone-event/8000'
a=fmtp:101 0-15'
a=ptime:20'
a=nortpproxy:yes'



My kamailio.cfg script does something like this:

if(!load_gws("1", "$ru")) ...
if(!next_gw()) ...
t_on_branch("BRANCH_ROUTE_CLI_RTP");
if(!t_relay_to("0x01")) ...

Branch route_cli_rtp: do rtpproxy stuff


No append_branch is executed at all. I have two INVITES IMHO because next_gw()
function does create the second one.


Any idea about this behaviour?