19 Aug
2020
19 Aug
'20
5:12 p.m.
Hello,
On 18.08.20 08:05, Cindy Leung wrote:
Hello all,
Just started using v5.4.0 on our system and I noticed a change in
behavior when doing the append_branch, t_load_contacts, and
t_next_contacts combo. Previously using v5.3.4 and it appears to be fine.
Here's the call scenario: Kamailio receives a call to
sip:1001@carrierB. Kamailio sees carrierB and appends 2 contacts:
gateway1.carrierB.com <http://gateway1.carrierB.com>;q=0.3 and
gateway2.carrierB.com <http://gateway2.carrierB.com>;q=0.2. After
t_load_branches(0),
first, I am not finding the t_load_branches() function, is it supposed
to be t_load_contacts()?
The, supposing it was the later, afaik, the load contacts was putting
the branches in internal xavps, not pushing to the r-uri. The
append_branch() was not changing the first branch (the r-uri) but adding
extra. So if you have the invite coming in to u1(a)s.com and do
append_branch(u2(a)s.com) and append_branch(u3(a)s.com), then it will be 3
branches that will go out in case of parallel forking.
With t_load_contacts() and t_next_contacts(), these 3 branches should be
prepared to do serial forking.
Now, I haven't really used these functions myself to comment more, it is
based on what append_branch() is doing: adding extra branches and
keeping the first branch (r-uri) untouched.
But if you found a different behaviour than expected, open a bug on
issue tracker and we can refer the developer of commit
1399714fbba63732f94eb8034dabb1e565ca832a (which added proportional load)
to review it.
Cheers,
Daniel
I expect to see $rd to be changed
to gateway1.carrierB.com
<http://gateway1.carrierB.com>, but it's not.
This is the piece of config I'm trying to debug:
xlog ("=== branch 0: $(branch(uri)[0]), $(branch(q)[0])\n");
xlog ("=== branch 1: $(branch(uri)[1]), $(branch(q)[1])\n");
t_load_contacts(0);
while (t_next_contacts()) {
xlog ("=== rd = $rd\n");
}
This is the log I get. It appears to use the backup contact first.
ERROR: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: === branch 0:
sip:1001@gateway2.carrierB.com
<mailto:sip%3A1001@gateway2.carrierB.com>;transport=udp, 200
ERROR: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: === branch 1:
sip:1001@gateway1.carrierB.com
<mailto:sip%3A1001@gateway1.carrierB.com>;transport=tcp, 300
DEBUG: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: tm
[t_serial.c:522]: t_load_contacts(): load_contact mode selected: 0
DEBUG: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: tm
[t_serial.c:340]: ki_t_load_contacts_mode(): nr_branches is 2
DEBUG: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: <core>
[core/xavp.c:539]: xavp_destroy_list(): destroying xavp list
0x7f983cb66608
DEBUG: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: tm
[t_serial.c:890]: ki_t_next_contacts(): Appending branch
uri-'sip:1001@gateway1.carrierB.com
<mailto:uri-%27sip%3A1001@gateway1.carrierB.com>;transport=tcp' dst-''
path-'' inst-'' ruid-'' location_ua-''
DEBUG: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: <core>
[core/xavp.c:539]: xavp_destroy_list(): destroying xavp list
0x7f983cb66350
ERROR: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: === rd = carrierB
DEBUG: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: <core>
[core/xavp.c:539]: xavp_destroy_list(): destroying xavp list
0x7f983cb66078
ERROR: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: === rd =
gateway2.carrierB.com <http://gateway2.carrierB.com>
DEBUG: IBG_LOG: sipp-ci1-20200818053427-1-23(a)172.18.1.21
<mailto:sipp-ci1-20200818053427-1-23@172.18.1.21>: tm
[t_serial.c:627]: ki_t_next_contacts(): no contacts in contacts_avp -
we are done!
t_load_contacts(1) works a little better. But we don't need the
probability feature.
ERROR: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: === branch 0:
sip:1001@gateway2.carrierB.com
<mailto:sip%3A1001@gateway2.carrierB.com>;transport=udp, 200
ERROR: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: === branch 1:
sip:1001@gateway1.carrierB.com
<mailto:sip%3A1001@gateway1.carrierB.com>;transport=tcp, 300
DEBUG: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: tm
[t_serial.c:522]: t_load_contacts(): load_contact mode selected: 1
DEBUG: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: tm
[t_serial.c:340]: ki_t_load_contacts_mode(): nr_branches is 2
DEBUG: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: tm
[t_serial.c:280]: t_load_contacts_proportional(): proportionally
selected contact with uri: sip:1001@gateway1.carrierB.com
<mailto:sip%3A1001@gateway1.carrierB.com>;transport=tcp (q: 300,
random: 287, q_index: 500, q_total: 500)
DEBUG: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: tm
[t_serial.c:280]: t_load_contacts_proportional(): proportionally
selected contact with uri: sip:1001@gateway2.carrierB.com
<mailto:sip%3A1001@gateway2.carrierB.com>;transport=udp (q: 200,
random: 157, q_index: 200, q_total: 200)
DEBUG: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: tm
[t_serial.c:303]: t_load_contacts_proportional(): proportionally added
backup contact with uri: sip:1001@carrierB SIP/2.0#015#012Via:
SIP/2.0/UDP 172.18.1.21:5060;branch=z9hG4bK-21-1-0 blah blah blah (q: -1)
DEBUG: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: <core>
[core/xavp.c:539]: xavp_destroy_list(): destroying xavp list
0x7f6e457ec078
ERROR: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: === rd =
gateway1.carrierB.com <http://gateway1.carrierB.com>
DEBUG: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: <core>
[core/xavp.c:539]: xavp_destroy_list(): destroying xavp list
0x7f6e457ec350
ERROR: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: === rd =
gateway2.carrierB.com <http://gateway2.carrierB.com>
DEBUG: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: <core>
[core/xavp.c:539]: xavp_destroy_list(): destroying xavp list
0x7f6e457ec608
ERROR: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: === rd = carrierB
DEBUG: IBG_LOG: sipp-ci1-20200818054736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818054736-1-21@172.18.1.21>: tm
[t_serial.c:627]: ki_t_next_contacts(): no contacts in contacts_avp -
we are done!
As a comparison, this is what we've been getting in 5.3.4
ERROR: IBG_LOG: sipp-ci1-20200818055736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818055736-1-21@172.18.1.21>: === branch 0:
sip:1001@gateway2.carrierB.com
<mailto:sip%3A1001@gateway2.carrierB.com>;transport=udp, 200
ERROR: IBG_LOG: sipp-ci1-20200818055736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818055736-1-21@172.18.1.21>: === branch 1:
sip:1001@gateway1.carrierB.com
<mailto:sip%3A1001@gateway1.carrierB.com>;transport=tcp, 300
DEBUG: IBG_LOG: sipp-ci1-20200818055736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818055736-1-21@172.18.1.21>: tm
[t_serial.c:191]: ki_t_load_contacts(): nr_branches is 2
DEBUG: IBG_LOG: sipp-ci1-20200818055736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818055736-1-21@172.18.1.21>: <core>
[core/xavp.c:529]: xavp_destroy_list(): destroying xavp list
0x7fe13146a680
ERROR: IBG_LOG: sipp-ci1-20200818055736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818055736-1-21@172.18.1.21>: === rd =
gateway1.carrierB.com <http://gateway1.carrierB.com>
DEBUG: IBG_LOG: sipp-ci1-20200818055736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818055736-1-21@172.18.1.21>: <core>
[core/xavp.c:529]: xavp_destroy_list(): destroying xavp list
0x7fe13146a3a8
ERROR: IBG_LOG: sipp-ci1-20200818055736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818055736-1-21@172.18.1.21>: === rd =
gateway2.carrierB.com <http://gateway2.carrierB.com>
DEBUG: IBG_LOG: sipp-ci1-20200818055736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818055736-1-21@172.18.1.21>: <core>
[core/xavp.c:529]: xavp_destroy_list(): destroying xavp list
0x7fe13146a0d0
ERROR: IBG_LOG: sipp-ci1-20200818055736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818055736-1-21@172.18.1.21>: === rd = carrierB
DEBUG: IBG_LOG: sipp-ci1-20200818055736-1-21(a)172.18.1.21
<mailto:sipp-ci1-20200818055736-1-21@172.18.1.21>: tm
[t_serial.c:460]: ki_t_next_contacts(): no contacts in contacts_avp -
we are done!
Is there anything else that's been changed in branch building that we
should pay attention to? Thanks.
Cindy
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