[kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Rexord-Rourte header. (#2852)
13 Sep
2021
13 Sep
'21
11:22 p.m.
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Hi !
topos+redis used in the folowing configuration:
modparam("ndb_redis", "server", "REDIS_SERVER")
modparam("ndb_redis", "init_without_redis", 1)
modparam("topos", "storage", "redis")
modparam("topos_redis", "serverid", "srv1")
modparam("topos", "contact_mode", 2)
modparam("topos", "xavu_cfg", "_tps_")
modparam("topos", "xavu_field_a_contact", "a_contact")
modparam("topos", "xavu_field_b_contact", "b_contact")
modparam("topos", "xavu_field_contact_host",
"contact_host")
In the inital INVITE xavu variables a_contact and b_contact are set by script, topos work
as expected at this point,
but when the following in-dalog messages from upstream have Record-Route header, topos
fails with error message:
Sep 13 18:50:01 gw481 /usr/sbin/kamailio[29874]: ERROR: {1 1 ACK 1-20643(a)87.250.237.98}
topos [tps_storage.c:331]: tps_storage_fill_contact(): could not evaluate a_contact xavu
Sep 13 18:50:01 gw481 /usr/sbin/kamailio[29874]: ERROR: {1 1 ACK 1-20643(a)87.250.237.98}
topos [tps_storage.c:604]: tps_storage_record(): failed to store
In case of absent Record-Route headers the are no errors.
#### Debugging Data
Signaling dump and debug log in attachment.
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
kamailio 5.5.1 (x86_64/linux)
```
* **Operating System**:
<!--
Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04,
CentOS 7.1, ...), MacOS, xBSD, Solaris, ...;
Kernel details (output of `lsb_release -a` and `uname -a`)
-->
```
Ubuntu 18.04.5 LTS
```
[dump.txt](https://github.com/kamailio/kamailio/files/7157118/dump.txt)
[call.log](https://github.com/kamailio/kamailio/files/7157120/call.log)
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14 Sep
14 Sep
4:32 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
I don't think is related to Record-Route, maybe to the presence of Contact in the ACK
(usually is not).
Anyhow, the xavp seems to be required every time a Contact has to be generated when
contact_mode = 2 -- that looks like what code requires. I replaced the use of avps with
xavps, but my patch doesn't seem to affect what was in the initial implementation done
by @henningw - maybe he can comment more and say if it's expected behaviour and a PR
needs to be done to cover your case.
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5:44 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
@miconda From a functionality point of view it should be ok to set the xavu during the
processing of the initial request. But as you mentioned, the change went through a few
iterations, also from my side. I will do some tests as well.
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6:21 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
Hi !
We have different carriers, some of them send contact in ACK & BYE, some not, but
problem persist only when in-Dialog
messages have Record-Route header. I can't put here real conversations, but can
reproduce signaling in lab.
Here is the signaling & debug log without contact in ACK, with Record-Route header
present.
[call1.log](https://github.com/kamailio/kamailio/files/7163114/call1.log)
[dump1.txt](https://github.com/kamailio/kamailio/files/7163118/dump1.txt)
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16 Sep
16 Sep
9:45 a.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
@Den4t - as I said I expect to be related to presence of Contact header, not to
Record-Route header -- it happens that both are set in your example, but processing is
related to contact header.
Anyhow, till is sorted out how it should work, you can check if the request within dialog
has Contact header (or Record-Route if really is that case) and the set that xavu.
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2:22 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
Didn't I show in the examples above that contact has nothing to do with it?
Aniway again,
no Contact with Record-Route in ACK, have error in topos:
[call4.log](https://github.com/kamailio/kamailio/files/7177215/call4.log)
[dump4.txt](https://github.com/kamailio/kamailio/files/7177216/dump4.txt)
no Contact, no Record-Route, no error:
[call5.log](https://github.com/kamailio/kamailio/files/7177218/call5.log)
[dump5.txt](https://github.com/kamailio/kamailio/files/7177219/dump5.txt)
> and the set that xavu
I do belive if i set
xavu in in-Dialog messages topos will be work correctly, but as sayd @henningw:
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2:44 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
Somehow I missed the comment without contact -- when I looked quickly at the code, the
xavu is used if contact address is found, being after this piece of code:
```
if(dir==TPS_DIR_DOWNSTREAM) {
sv = td->bs_contact;
} else {
sv = td->as_contact;
}
if(sv.len<=0) {
/* no contact - skip */
return 0;
}
```
But I do not use this mode with xavu and don't know what is supposed to do. I just
wanted to give some hints.
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4:37 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
Another idea, as the topos has the option to do Record-Route update
(https://www.kamailio.org/docs/modules/stable/modules/topos.html#topos.p.rr_…), might
be somehow related.
If you do not enable Record-Route update, then you can remove the Record-Route headers for
requests within dialog with remove_hf("Record-Route") and try to see if it
works.
If you enable that option, then you also have to do record_route() for the requests within
dialog.
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20 Sep
20 Sep
12:39 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
Hi, @miconda !
I do not enable rr_update, but can confirm that with removing Record-Route from in-Dalog
messages topos errors are gone.
For now it seems to be a solution.
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3:03 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
Somehow I missed the comment without contact -- when I
looked quickly at the code, the xavu is used if contact address is found, being after this
piece of code:
```
if(dir==TPS_DIR_DOWNSTREAM) {
sv = td->bs_contact;
} else {
sv = td->as_contact;
}
if(sv.len<=0) {
/* no contact - skip */
return 0;
}
```
But I do not use this mode with xavu and don't know what is supposed to do. I just
wanted to give some hints.
I think that contact variables filled by tps_pack_message in tps_request_sent function
from Record-Route header:
```
Sep 16 13:55:16 gw481 /usr/sbin/kamailio[11425]: DEBUG: {1 1 ACK 1-12131(a)87.250.237.98}
topos [tps_msg.c:1006]: tps_request_sent(): handling outgoing request (1, 0)
Sep 16 13:55:16 gw481 /usr/sbin/kamailio[11425]: DEBUG: {1 1 ACK 1-12131(a)87.250.237.98}
topos [tps_msg.c:415]: tps_pack_message(): compacted headers - x_via1: [SIP/2.0/UDP
[2a02:6b8:0:6::5];branch=z9hG4bK7bb2.7dbc336ffe6a81233e57c387950431c8.0](83) - x_via2:
[SIP/2.0/UDP
87.250.237.98:5070;received=87.250.237.98;rport=5070;branch=z9hG4bK-12131-1-5;sig=4100ba9a](102)
- x_vbranch1: [z9hG4bK7bb2.7dbc336ffe6a81233e57c387950431c8.0](46)
Sep 16 13:55:16 gw481 /usr/sbin/kamailio[11425]: DEBUG: {1 1 ACK 1-12131(a)87.250.237.98}
topos [tps_msg.c:483]: tps_pack_message(): single record routing by proxy
Sep 16 13:55:16 gw481 /usr/sbin/kamailio[11425]: DEBUG: {1 1 ACK 1-12131(a)87.250.237.98}
topos [tps_msg.c:537]: tps_pack_message(): compacted headers - a_rr: [](0) - b_rr: [](0) -
s_rr: [<sip:87.250.237.98:5070;lr;ftag=1c1658248864;did=626.1edbf0d5>](62)
Sep 16 13:55:16 gw481 /usr/sbin/kamailio[11425]: DEBUG: {1 1 ACK 1-12131(a)87.250.237.98}
topos [tps_msg.c:542]: tps_pack_message(): compacted headers - as_contact:
[sip:87.250.237.98:5070;lr;ftag=1c1658248864;did=626.1edbf0d5](60) - bs_contact:
[sip:87.250.237.98:5070;lr;ftag=1c1658248864;did=626.1edbf0d5](60)
```
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28 Sep
28 Sep
1:36 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
I can not reproduce the problem, either with redis or DB. It sufficient to set the xavu in
the request_route.
Pretty default cfg with the following additions:
```
root@kam03:/etc/kamailio# egrep "redis|topos" kamailio.cfg-2852
loadmodule "ndb_redis.so"
loadmodule "topos_redis.so"
loadmodule "topos.so"
modparam("ndb_redis", "server",
"name=srv1;addr=localhost;port=6379")
modparam("ndb_redis", "init_without_redis", 1)
modparam("topos", "storage", "redis")
#modparam("topos", "storage", "db")
modparam("topos_redis", "serverid", "srv1")
modparam("topos", "contact_mode", 2)
modparam("topos", "xavu_cfg", "tps")
modparam("topos", "xavu_field_a_contact", "a_contact")
modparam("topos", "xavu_field_b_contact", "b_contact")
modparam("topos", "xavu_field_contact_host",
"contact_host")
request_route {
[...]
$xavu(tps=>a_contact) = "A-side";
$xavu(tps=>b_contact) = "B-side";
[...]
}
```
INVITE contact-1 -> contact-2:
INVITE sip:contact-2@116.203.XX.XXX:5066;ob SIP/2.0
Contact: <sip:A-side@116.203.YY.YY;tps=btpsh-6152ec8f-6744-1>
ACK contact-1 -> contact-2:
ACK sip:contact-2@116.203.XX.XX:5066;alias=116.203.XX.XX~5066~1;ob SIP/2.0
Contact: <sip:A-side@116.203.YY.YY;tps=btpsh-6152ec8f-6744-1>
BYE contact-2 -> contact-1:
BYE sip:contact-1@116.203.XX.XX:5095;ob SIP/2.0
Contact: <sip:B-side@116.203.YY.YY;tps=atpsh-6152ec8f-6744-1>
Kamailio from 5.5 branch:
root@kam03:/usr/local/src/5.5# /usr/local/kamailio-5.5/sbin/kamailio -v
version: kamailio 5.5.2 (x86_64/linux) 3b523f
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2:30 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
I have found one regression introduced in c030fc5231d2a653.
If *modparam("topos", "xavu_field_contact_host",
"contact_host")* is not set, the module will not work in contact_mode 2. Its
fixed in the referenced commit.
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4 Oct
4 Oct
6:42 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
Close the issue, could not be reproduced. Pleaser re-open if you have more/new
information.
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6:42 p.m.
New subject: [kamailio/kamailio] topos/topos_redis, error: "could not evaluate a_contact xavu" when in-dialog msg have Record-Route header. (#2852)
Closed #2852.
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1135
days inactive
1156
days old
13 comments
3 participants
participants (3)
-
Daniel-Constantin Mierla -
Dennis
-
Henning Westerholt