Hi,

Any ideas regarding "t_append_branches(): failure to add branches (-1)"?

Is there a way somehow to dump what ts_append handover towards tm? I think if I would be able to see this I will be able to understand what is wrong. I tried tm:local-request and failure route and branch route, but these routes are not executed when this error happens.

Maybe the issue is that the TLS connection is established between Kamailio and UAC what is in front my Register and this Register kamailio just tries to connect directly towards UAC and it fails? At least this is my idea why this might fail.

Jurijs

On Thu, Oct 29, 2020 at 8:38 AM Jurijs Ivolga <jurijs.ivolga@gmail.com> wrote:

Hi Federico,

Indeed I had a messed up config at that point. I cleaned it up, but still had the same problem.

Full log in attachment.

Here is some part of it:

45(51) DEBUG: {1 21 REGISTER 6z~FzexPro} tsilo [ts_append.c:72]: ts_append(): transaction 16864:783220347 found for sip:1443452187102-0af7c6035717-0001@voipstaging.myappapp.net, going to append branches
45(51) DEBUG: {1 21 REGISTER 6z~FzexPro} tm [t_lookup.c:1612]: t_lookup_ident_filter(): transaction found
45(51) DEBUG: {1 21 REGISTER 6z~FzexPro} registrar [lookup.c:306]: lookup_helper(): contact for [1443452187102-0af7c6035717-0001] found by address
45(51) DEBUG: {1 21 REGISTER 6z~FzexPro} tm [t_append_branches.c:77]: t_append_branches(): transaction 16864:783220347 in status 180
45(51) DEBUG: {1 21 REGISTER 6z~FzexPro} tm [t_append_branches.c:99]: t_append_branches(): Call 3ed4a6c3051ea46b50487a0d1b5b25ec@10.10.0.0: 1 (0) outgoing branches
45(51) DEBUG: {1 21 REGISTER 6z~FzexPro} tm [t_append_branches.c:163]: t_append_branches(): Call 3ed4a6c3051ea46b50487a0d1b5b25ec@10.10.0.0: 1 (0) outgoing branches after clear_branches()
45(51) ERROR: {1 21 REGISTER 6z~FzexPro} tm [t_append_branches.c:172]: t_append_branches(): failure to add branches (-1)
45(51) INFO: {1 21 REGISTER 6z~FzexPro} <script>: tsilo appending branch sip:1443452187102-0af7c6035717-0001@voipstaging.myappapp.net

Here Kamailio snippets of config:
...........................................................
route[CONTINUE] {
if (!is_method("REGISTER"))
return;
$var(pjoin) = 0;
lock("$tU");
$var(pjoin) = $sht(pmap=>join::$tU);
$var(pstored) = $sht(pmap=>stored::$tU);
xlog("L_INFO", "===== Stored 1 not stored 0 $var(pstored) [$sht(pmap=>stored::$tU)] \n");
$sht(pmap=>join::$tU) = $null;
unlock("$tU");
if($var(pjoin)==0) {
if ($var(pstored)) {
if($expires(min)>0) {
ts_append("location", "sip:$tU@voipstaging.onoffapp.net");
xlog("L_INFO","tsilo appending branch $tu \n");
}
}
return;
}
$var(id_index) = $(var(pjoin){s.select,0,:}{s.int});
$var(id_label) = $(var(pjoin){s.select,1,:}{s.int});
xlog("L_INFO", "===== resuming suspended trasaction [$var(id_index):$var(id_label)] $tU ($var(pjoin)) \n");
t_continue("$var(id_index)", "$var(id_label)", "LOCATION");
}

...........................................................

if (is_method("INVITE")) {
ts_store();
$sht(pmap=>stored::$rU) = 1;
xlog("L_ERR" ,"stored transaction [$T(id_index):$T(id_label)] $fU => $rU\n");
}

...........................................................

Jurijs
On Wed, Oct 28, 2020 at 9:09 AM Federico Cabiddu <federico.cabiddu@gmail.com> wrote:
Hi Jurijs,
I had a look at the logs and there is something strange: I see the ts_append logs before the registrar module ones (the save function).
Are you sure you are calling ts_append after calling save()?

Cheers,

Federico
On Tue, Oct 27, 2020 at 10:26 AM Jurijs Ivolga <jurijs.ivolga@gmail.com> wrote:
Hi Daniel-Constantin,

Debug log is intachment. Do you see any hints?

I think this is relative part:

2020-10-27T08:24:36.198Z,"79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} tsilo [ts_append.c:72]: ts_append(): transaction 21280:984985415 found for sip:1443452187102-0af7c6035717-0001@voipstaging.myapp.net, going to append branches"
2020-10-27T08:24:36.198Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} registrar [lookup.c:306]: lookup_helper(): contact for [1443452187102-0af7c6035717-0001] found by address
2020-10-27T08:24:36.198Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} tm [t_lookup.c:1612]: t_lookup_ident_filter(): transaction found
2020-10-27T08:24:36.199Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} tm [t_append_branches.c:77]: t_append_branches(): transaction 21280:984985415 in status 180
2020-10-27T08:24:36.199Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} tm [t_append_branches.c:99]: t_append_branches(): Call 88cc06a544ba41a8aee5035c437baabf@0.0.0.0: 1 (0) outgoing branches
2020-10-27T08:24:36.205Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} tm [t_append_branches.c:163]: t_append_branches(): Call 88cc06a544ba41a8aee5035c437baabf@0.0.0.0: 1 (0) outgoing branches after clear_branches()
2020-10-27T08:24:36.206Z,"79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} tsilo [ts_append.c:72]: ts_append(): transaction 38832:1600293484 found for sip:1443452187102-0af7c6035717-0001@voipstaging.myapp.net, going to append branches"
2020-10-27T08:24:36.206Z,79(85) ERROR: {1 21 REGISTER G~qt15Oz7~} tm [t_append_branches.c:172]: t_append_branches(): failure to add branches (-1)
2020-10-27T08:24:36.207Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} registrar [lookup.c:306]: lookup_helper(): contact for [1443452187102-0af7c6035717-0001] found by address
2020-10-27T08:24:36.207Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} tm [t_append_branches.c:77]: t_append_branches(): transaction 38832:1600293484 in status 180
2020-10-27T08:24:36.207Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} tm [t_lookup.c:1612]: t_lookup_ident_filter(): transaction found
2020-10-27T08:24:36.208Z,79(85) ERROR: {1 21 REGISTER G~qt15Oz7~} tm [t_append_branches.c:172]: t_append_branches(): failure to add branches (-1)
2020-10-27T08:24:36.208Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} tm [t_append_branches.c:99]: t_append_branches(): Call aac9c351-92d0-1239-0599-024233fefdc7: 2 (0) outgoing branches
2020-10-27T08:24:36.208Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} tm [t_append_branches.c:163]: t_append_branches(): Call aac9c351-92d0-1239-0599-024233fefdc7: 2 (0) outgoing branches after clear_branches()
2020-10-27T08:24:36.209Z,79(85) INFO: {1 21 REGISTER G~qt15Oz7~} <script>: tsilo appending branch sip:1443452187102-0af7c6035717-0001@voipstaging.myapp.net
2020-10-27T08:24:36.217Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} <core> [core/strutils.c:215]: unescape_user(): unescaped string is <sip:192.168.173.107:55982;transport=tls>
2020-10-27T08:24:36.218Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} registrar [path.c:116]: build_path_vector(): path is <<sip:ingress1dev.myapp.net;lr;received=sip:192.168.173.107:55982%3Btransport%3Dtls>>
2020-10-27T08:24:36.218Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} registrar [path.c:108]: build_path_vector(): received is <sip:192.168.173.107:55982;transport=tls>
2020-10-27T08:24:36.218Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} registrar [save.c:314]: pack_ci(): set instance[<urn:uuid:2a56856a-fae5-00f6-8f3b-2d9283f533be>]
2020-10-27T08:24:36.219Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} <core> [sruid.c:182]: sruid_next(): new sruid is [uloc-5f97d8f4-55-1] (1 / 18)
2020-10-27T08:24:36.219Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} registrar [save.c:410]: pack_ci(): generated ruid is: uloc-5f97d8f4-55-1
2020-10-27T08:24:36.220Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} registrar [save.c:410]: pack_ci(): generated ruid is: uloc-5f97d8f4-55-2
2020-10-27T08:24:36.220Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} <core> [sruid.c:182]: sruid_next(): new sruid is [uloc-5f97d8f4-55-2] (2 / 18)
2020-10-27T08:24:36.220Z,"79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} registrar [reply.c:377]: build_contact(): created Contact HF: Contact: <sip:1443452187102-0af7c6035717-0001@192.168.173.107:55982;transport=tls>;q=1;expires=120;received=""sip:192.168.173.107:55982;transport=tls"";+sip.instance=""<urn:uuid:2a56856a-fae5-00f6-8f3b-2d9283f533be>"""
2020-10-27T08:24:36.227Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} cfgutils [cfgutils.c:724]: cfg_lock_helper(): cfg_lock mode 0 on 54 (1443452187102-0af7c6035717-0001)
2020-10-27T08:24:36.228Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} htable [ht_var.c:89]: pv_set_ht_cell(): set value for $sht(pmap=>join::1443452187102-0af7c6035717-0001)
2020-10-27T08:24:36.228Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} cfgutils [cfgutils.c:724]: cfg_lock_helper(): cfg_lock mode 1 on 54 (1443452187102-0af7c6035717-0001)
2020-10-27T08:24:36.228Z,79(85) DEBUG: {1 21 REGISTER G~qt15Oz7~} <core> [core/receive.c:437]: receive_msg(): request-route executed in: 2293 usec

Jurijs
On Tue, Oct 27, 2020 at 10:20 AM Daniel-Constantin Mierla <miconda@gmail.com> wrote:
Hello,

if you get it always, then run with debug=3 and send all the debug messages here, there should be more hints about why a branch is not added.

Cheers,
Daniel

On 27.10.20 08:40, Jurijs Ivolga wrote:
Hi,

I have several Kamailio proxies - loadbalancer which is used as TLS offload and Authorization server and behind registrar servers.

In this case I can't make tsilo work on the registrar server.

I'm always getting: "tm [t_append_branches.c:172]: t_append_branches(): failure to add branches (-1)"

If I use just one Kamailio which is used as Authorization and Registrar server then tsilo works as expected.

Looks like kamailio where I run ts_append tries to connect to UAC directly and not through Loadbalancer.

Any ideas? How can I troubleshoot this?

Thank you!

Jurijs
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