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### Description
Extract media stats per leg from RTPengine but in spite of labels being present
in RTPengine logs the values are not extracted in their respective PV's
Note : the overall average, max and min values appear fine
### Troubleshooting
Opened Kamailio in debug mode and saw that labels are being set , yet
appearing as null
Snipets
```
tagsd8:91e08b04d3:tag8:91e08b045:label6:caller7:createdi1590686836e16:in
dialogue
with13:tKtpK3BHjFavK6:mediasld5:indexi1e4:type5:audio8:protocol8:RTP/AVPF7
..
looking for label '<null>'
```
Full logs below in the "Log Messages" section
#### Reproduction
Using Lua on Kamailio v5.2.1
1. Add labels in RTPengine offer , ensuring the traffic is AVPF
```
local rtpengine_codecs_flag = " codec-strip-all codec-offer-PCMA
codec-offer-pcma "
local rtpengine_offer_flag = "ICE=remove RTP/AVPF full-rtcp-attribute
direction=external direction=external replace-origin replace-session-connection
record-call=yes " .. rtpengine_codecs_flag .. " label=caller "
local rtpengine_answer_flag = "ICE=remove RTP/AVPF full-rtcp-attribute
direction=external direction=external replace-origin replace-session-connection
record-call=yes label=callee "
```
2. set the mos label
```
KSR.pv.sets("$avp(mos_A_label)", "caller");
```
3. Make call and do RTPengine offer and answer like usual
```
KSR.rtpengine.rtpengine_offer(rtpengine_offer_flag)
...
KSR.rtpengine.rtpengine_answer(rtpengine_answer_flag)
```
3. On BYE , do rtpengihne delete
```
KSR.rtpengine.rtpengine_delete0()
```
4. gather PV values for legs
```
KSR.log("info", "mos_A_label " .. KSR.pv.getvn("$avp(mos_A_label)", 1)
.. "\n ")
KSR.log("info", "mos_average_packetloss_A " ..
KSR.pv.getvn("$avp(mos_average_packetloss_A)", 0) .. "\n ")
KSR.log("info", "mos_average_jitter_A " ..
KSR.pv.getvn("$avp(mos_average_jitter_A)", 0) .. "\n ")
KSR.log("info", "mos_average_roundtrip_A " ..
KSR.pv.getvn("$avp(mos_average_roundtrip_A)", 0) .. "\n ")
KSR.log("info", "mos_average_A " .. KSR.pv.getvn("$avp(mos_average_A)",
0) .. "\n ")
```
#### Debugging Data
<!--
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backtrace,
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gdb /path/to/kamailio /path/to/corefile
bt full
info locals
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If you are familiar with gdb, feel free to attach more of what you consider to
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```
(paste your debugging data here)
```
#### Log Messages
<!--
Check the syslog file and if there are relevant log messages printed by
Kamailio, add them next, or attach to issue, or provide a link to download them
(e.g., to a pastebin site).
-->
Log from kamailio from BYE untill printing overall average mos score
```
4(11084) INFO: <core> [core/kemi.c:143]: sr_kemi_core_log(): >>> delete
RTPengine
4(11084) DEBUG: rtpengine [rtpengine.c:2912]: select_rtpp_node_old():
rtpengine hash table lookup find node=udp:192.168.1.109:2222 for calllen=49
callid=103103ZjIzOGM1MWRlYjQxZDhjYWQ4YTlhN2I3ODg0YWNmN2I viabranch=
4(11084) DEBUG: rtpengine [rtpengine.c:2452]: rtpp_function_call(): proxy
reply: d7:createdi1590686836e10:created_usi219955e11:last
signali1590686836e4:SSRCd10:2899397750d11:average MOSd3:MOSi43e15:round-trip
timei14365e6:jitteri0e11:packet lossi0e7:samplesi3ee10:lowest
MOSd3:MOSi43e15:round-trip timei12630e6:jitteri1e11:packet lossi0e11:reported
ati1590686846ee11:highest MOSd3:MOSi44e15:round-trip
timei7559e6:jitteri0e11:packet lossi0e11:reported ati1590686849ee15:MOS
progressiond8:intervali0e7:entriesld3:MOSi43e15:round-trip
timei12630e6:jitteri1e11:packet lossi0e11:reported
ati1590686846eed3:MOSi44e15:round-trip timei7559e6:jitteri0e11:packet
lossi0e11:reported ati1590686849eed3:MOSi43e15:round-trip
timei22908e6:jitteri0e11:packet lossi0e11:reported
ati1590686855eeeee10:3469957276d11:average MOSd3:MOSi43e15:round-trip
timei17045e6:jitteri0e11:packet lossi0e7:samplesi5ee10:lowest
MOSd3:MOSi43e15:round-trip timei10048e6:jitteri0e11:packet lossi0e11:reported
ati1590686844ee11:highest MOSd3:MOSi44e15:round-trip
timei7134e6:jitteri0e11:packet lossi0e11:reported ati1590686848ee15:MOS
progressiond8:intervali1e7:entriesld3:MOSi43e15:round-trip
timei10048e6:jitteri0e11:packet lossi0e11:reported
ati1590686844eed3:MOSi44e15:round-trip timei7134e6:jitteri0e11:packet
lossi0e11:reported ati1590686848eed3:MOSi43e15:round-trip
timei22738e6:jitteri0e11:packet lossi0e11:reported
ati1590686852eed3:MOSi43e15:round-trip timei22566e6:jitteri0e11:packet
lossi0e11:reported ati1590686853eed3:MOSi43e15:round-trip
timei22739e6:jitteri0e11:packet lossi0e11:reported
ati1590686854eeeeee4:tagsd8:91e08b04d3:tag8:91e08b045:label6:caller7:createdi1590686836e16:in
dialogue
with13:tKtpK3BHjFavK6:mediasld5:indexi1e4:type5:audio8:protocol8:RTP/AVPF7:streamsld10:local
porti31052e8:endpointd6:family4:IPv47:address13:192.168.1.1084:porti58004ee19:advertised
endpointd6:family4:IPv47:address13:192.168.1.1084:porti58004ee11:last
packeti1590686855e5:flagsl3:RTP6:filled9:confirmed10:kernelized17:no kernel
supporte4:SSRCi2899397750e5:statsd7:packetsi928e5:bytesi157696e6:errorsi12eeed10:local
porti31053e8:endpointd6:family4:IPv47:address13:192.168.1.1084:porti58005ee19:advertised
endpointd6:family4:IPv47:address13:192.168.1.1084:porti58005ee11:last
packeti1590686855e5:flagsl4:RTCP6:filled9:confirmed10:kernelized17:no kernel
supporte4:SSRCi2899397750e5:statsd7:packetsi5e5:bytesi400e6:errorsi0eeee5:flagsl11:initialized4:send4:recveeee13:tKtpK3BHjFavKd3:tag13:tKtpK3BHjFavK5:label6:callee7:createdi1590686836e16:in
dialogue
with8:91e08b046:mediasld5:indexi1e4:type5:audio8:protocol8:RTP/AVPF7:streamsld10:local
porti31044e8:endpointd6:family4:IPv47:address13:192.168.1.1094:porti27984ee19:advertised
endpointd6:family4:IPv47:address13:192.168.1.1094:porti27984ee11:last
packeti1590686855e5:flagsl3:RTP6:filled9:confirmed10:kernelized17:no kernel
support3:ICEe4:SSRCi3469957276e5:statsd7:packetsi653e5:bytesi112316e6:errorsi0eeed10:local
porti31045e8:endpointd6:family4:IPv47:address13:192.168.1.1094:porti27985ee19:advertised
endpointd6:family4:IPv47:address13:192.168.1.1094:porti27985ee11:last
packeti1590686854e5:flagsl4:RTCP6:filled9:confirmed10:kernelized17:no kernel
support3:ICEe4:SSRCi3469957276e5:statsd7:packetsi6e5:bytesi652e6:errorsi0eeee5:flagsl11:initialized4:send4:recv3:ICE15:ICE
controllingeeeee6:totalsd3:RTPd7:packetsi1581e5:bytesi270012e6:errorsi12ee4:RTCPd7:packetsi11e5:bytesi1052e6:errorsi0eee6:result2:oke
4(11084) DEBUG: rtpengine [rtpengine.c:2536]: rtpp_function_call(): rtpengine
hash table remove entry for callen=49
callid=103103ZjIzOGM1MWRlYjQxZDhjYWQ4YTlhN2I3ODg0YWNmN2I viabranch=
4(11084) DEBUG: rtpengine [rtpengine.c:3129]: parse_call_stats_1(): rtpengine:
looking for label '<null>'
4(11084) DEBUG: rtpengine [rtpengine.c:3135]: parse_call_stats_1(): rtpengine:
XXX got tags
4(11084) DEBUG: rtpengine [rtpengine.c:3138]: parse_call_stats_1(): rtpengine:
XXX got tag
4(11084) DEBUG: rtpengine [rtpengine.c:3143]: parse_call_stats_1(): rtpengine:
XXX got label caller
4(11084) DEBUG: rtpengine [rtpengine.c:3138]: parse_call_stats_1(): rtpengine:
XXX got tag
4(11084) DEBUG: rtpengine [rtpengine.c:3143]: parse_call_stats_1(): rtpengine:
XXX got label callee
4(11084) DEBUG: rtpengine [rtpengine.c:3129]: parse_call_stats_1(): rtpengine:
looking for label '<null>'
4(11084) DEBUG: rtpengine [rtpengine.c:3135]: parse_call_stats_1(): rtpengine:
XXX got tags
4(11084) DEBUG: rtpengine [rtpengine.c:3138]: parse_call_stats_1(): rtpengine:
XXX got tag
4(11084) DEBUG: rtpengine [rtpengine.c:3143]: parse_call_stats_1(): rtpengine:
XXX got label caller
4(11084) DEBUG: rtpengine [rtpengine.c:3138]: parse_call_stats_1(): rtpengine:
XXX got tag
4(11084) DEBUG: rtpengine [rtpengine.c:3143]: parse_call_stats_1(): rtpengine:
XXX got label callee
4(11084) DEBUG: app_lua [app_lua_sr.c:1024]: lua_sr_pv_get_valx(): pv set:
$avp(mos_average)
4(11084) DEBUG: <core> [core/pvapi.c:395]: pv_cache_lookup(): pvar
[$avp(mos_average)] found in cache
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[0] for: log is str: info
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[1] for: log is str: mos average 4.3
4(11084) INFO: <core> [core/kemi.c:143]: sr_kemi_core_log(): mos average 4.3
```
Logs from the same trace printing A leg values as nill , I'm using get getvn
such as
```
KSR.log("info", "mos_average_B " .. KSR.pv.getvn("$avp(mos_average_B)", 0) ..
"\n ")
```
the traces thus show all values as 0
```
4(11084) INFO: <core> [core/kemi.c:143]: sr_kemi_core_log(): mos_A_label 1
4(11084) DEBUG: app_lua [app_lua_sr.c:1024]: lua_sr_pv_get_valx(): pv set:
$avp(mos_average_packetloss_A)
4(11084) DEBUG: <core> [core/pvapi.c:395]: pv_cache_lookup(): pvar
[$avp(mos_average_packetloss_A)] found in cache
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[0] for: log is str: info
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[1] for: log is str: mos_average_packetloss_A 0
4(11084) INFO: <core> [core/kemi.c:143]: sr_kemi_core_log():
mos_average_packetloss_A 0
4(11084) DEBUG: app_lua [app_lua_sr.c:1024]: lua_sr_pv_get_valx(): pv set:
$avp(mos_average_jitter_A)
4(11084) DEBUG: <core> [core/pvapi.c:395]: pv_cache_lookup(): pvar
[$avp(mos_average_jitter_A)] found in cache
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[0] for: log is str: info
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[1] for: log is str: mos_average_jitter_A 0
4(11084) INFO: <core> [core/kemi.c:143]: sr_kemi_core_log():
mos_average_jitter_A 0
4(11084) DEBUG: app_lua [app_lua_sr.c:1024]: lua_sr_pv_get_valx(): pv set:
$avp(mos_average_roundtrip_A)
4(11084) DEBUG: <core> [core/pvapi.c:395]: pv_cache_lookup(): pvar
[$avp(mos_average_roundtrip_A)] found in cache
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[0] for: log is str: info
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[1] for: log is str: mos_average_roundtrip_A 0
4(11084) INFO: <core> [core/kemi.c:143]: sr_kemi_core_log():
mos_average_roundtrip_A 0
4(11084) DEBUG: app_lua [app_lua_sr.c:1024]: lua_sr_pv_get_valx(): pv set:
$avp(mos_average_A)
4(11084) DEBUG: <core> [core/pvapi.c:395]: pv_cache_lookup(): pvar
[$avp(mos_average_A)] found in cache
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[0] for: log is str: info
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[1] for: log is str: mos_average_A 0
4(11084) INFO: <core> [core/kemi.c:143]: sr_kemi_core_log(): mos_average_A 0
4(11084) DEBUG: app_lua [app_lua_sr.c:1024]: lua_sr_pv_get_valx(): pv set:
$avp(mos_B_label)
4(11084) DEBUG: <core> [core/pvapi.c:395]: pv_cache_lookup(): pvar
[$avp(mos_B_label)] found in cache
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[0] for: log is str: info
4(11084) DEBUG: app_lua [app_lua_sr.c:1651]: sr_kemi_lua_exec_func_ex():
param[1] for: log is str: mos_B_label 1
```
All IPs are local network so I didn't bother masking them
#### SIP Traffic
<!--
If the issue is exposed by processing specific SIP messages, grab them with
ngrep or save in a pcap file, then add them next, or attach to issue, or
provide a link to download them (e.g., to a pastebin site).
-->
```
(paste your sip traffic here)
```
### Possible Solutions
<!--
If you found a solution or workaround for the issue, describe it. Ideally,
provide a pull request with a fix.
-->
I did manage to extract the leg A values by first commenting out pase_call
stats for overall and leg B
```
//parse_call_stats_1(&global_mos_stats, dict, msg);
parse_call_stats_1(&side_A_mos_stats, dict, msg);
//parse_call_stats_1(&side_B_mos_stats, dict, msg);
```
and then commenting out the check between the label and well another label ,
which is where I figured it was breaking the loop
```
//if (str_cmp(&check, &label))
// continue;
```
I understand this isn't an acceptable approach and I looking forward to
learning whether this really is a bug or a bad setting on my end
Initially though it an RTPengine issue and raised a bug there too
https://github.com/sipwise/rtpengine/issues/947
pretty sure it isn't an RTPenginhe issue now .
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
kamailio -v
version: kamailio 5.2.1 (x86_64/linux) b71938-dirty
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS,
DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC,
F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT,
USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144 MAX_URI_SIZE 1024,
BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: b71938 -dirty
compiled on 13:06:02 May 28 2020 with gcc 7.5.0
```
* **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 `uname -a`)
-->
```
Linux altanai-Inspiron-15-5578 4.15.0-62-generic #69-Ubuntu SMP Wed Sep 4
20:55:53 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
```
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