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### Description
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Explain what you did, what you expected to happen, and what actually happened.
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We are using lua base routing with app_lua. We are seeing that our
memory-utilization on that system continuously getting increase. our route.lua
will have all routing logic same as
https://github.com/kamailio/kamailio/blob/master/misc/examples/kemi/kamailio-basic-kemi-lua.lua
we are using following set of modules
loadmodule "tm.so"
loadmodule "rr.so"
loadmodule "pv.so"
loadmodule "tmx.so"
loadmodule "sl.so"
loadmodule "maxfwd.so"
loadmodule "nathelper.so"
loadmodule "textops.so"
loadmodule "siputils.so"
loadmodule "xlog.so"
loadmodule "sanity.so"
loadmodule "path.so"
loadmodule "jsonrpcs.so"
loadmodule "app_lua.so"
loadmodule "dispatcher.so"
loadmodule "json.so"
loadmodule "cfg_rpc.so"
loadmodule "ctl.so"
loadmodule "ipops.so"
loadmodule "http_async_client.so"
loadmodule "dialog.so"
# ----------------- setting module-specific parameters ---------------
# ----- rr params -----
# set next param to 1 to add value to ;lr param (helps with some UAs)
modparam("rr", "enable_full_lr", 0)
# do not append from tag to the RR (no need for this script)
modparam("rr", "append_fromtag", 1)
# ----- dispatcher params -----
modparam("dispatcher", "list_file", DISPATCHER_FILE)
modparam("dispatcher", "ds_probing_mode", 1)
modparam("dispatcher", "flags", 2)
modparam("dispatcher", "ds_ping_interval", 10)
modparam("dispatcher", "ds_ping_from", "sip:[email protected]")
# ----- nathelper params ----
modparam("nathelper", "received_avp", "$avp(s:rcv)")
# ----- http_async_client -------
# ---- number of worker process for async req and res
modparam("http_async_client", "workers", 4)
# ----- ctl ------
modparam("ctl", "binrpc", "tcp:MY_IP_ADDR:2086")
# ----- app_lua params ----
modparam("app_lua", "reload", 1)
modparam("app_lua", "load", ROUTE_LUA)
# ---- dialog params ----
modparam("dialog", "enable_stats", 1)
modparam("dialog", "dlg_flag", 4)
modparam("dialog", "event_callback", "ksr_dialog_event")
cfgengine "lua"
### Troubleshooting
#### Reproduction
We can easily reproduce by loading app_lua with kamailio-basic-kemi-lua.lua
https://github.com/kamailio/kamailio/blob/master/misc/examples/kemi/kamailio-basic-kemi-lua.lua
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#### Debugging Data
root@ip-172-31-4-160:~# kamcmd -s tcp:172.31.4.160:2046 tm.stats
{
current: 2220
waiting: 2198
total: 6113169
total_local: 1371
rpl_received: 11958486
rpl_generated: 6111711
rpl_sent: 12224635
6xx: 0
5xx: 6104789
4xx: 6831
3xx: 0
2xx: 1483
created: 6113169
freed: 6110949
delayed_free: 0
}
transaction are getting free as they are created so no transaction memory leak.
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```
U 54.183.198.87:5060 -> 172.31.4.160:5060
INVITE sip:[email protected]:5060 SIP/2.0.
Record-Route: <sip:54.183.198.87;lr;ftag=2186327>.
Via: SIP/2.0/UDP
54.183.198.87:5060;branch=z9hG4bK62f3.22dfb9a43503cc12dafdcdbc9ab1e17d.0.
Via: SIP/2.0/UDP
172.31.13.202:5060;rport=5060;received=13.232.78.75;branch=z9hG4bK-20254-2186327-0.
From: <sip:[email protected]>;tag=2186327.
To: <sip:[email protected]>.
Call-ID: [email protected].
CSeq: 1 INVITE.
Contact: <sip:[email protected]:5060;transport=UDP;alias=13.232.78.75~5060~1>.
Max-Forwards: 69.
User-Agent: Sipp/Linux.
Supported: replaces, outbound.
Content-Type: application/sdp.
Content-Length: 139.
X-ZT-Cust-IP: 13.232.78.75.
X-ZT-Trunk: 21979254854757081.zt.plivo.com.
.
v=0.
o=user1 53655765 2353687637 IN IP4 13.126.252.148.
s=-.
c=IN IP4 13.126.252.148.
t=0 0.
m=audio 6000 RTP/AVP 0.
a=rtpmap:0 PCMU/8000.
#
U 172.31.4.160:5060 -> 54.183.198.87:5060
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP
54.183.198.87:5060;branch=z9hG4bK62f3.22dfb9a43503cc12dafdcdbc9ab1e17d.0;rport=5060.
Via: SIP/2.0/UDP
172.31.13.202:5060;rport=5060;received=13.232.78.75;branch=z9hG4bK-20254-2186327-0.
From: <sip:[email protected]>;tag=2186327.
To: <sip:[email protected]>.
Call-ID: [email protected].
CSeq: 1 INVITE.
Server: kamailio (5.1.3 (x86_64/linux)).
Content-Length: 0.
.
#
U 172.31.4.160:5060 -> 54.183.198.87:5060
SIP/2.0 408 Request Timeout.
Via: SIP/2.0/UDP
54.183.198.87:5060;branch=z9hG4bK223b.cd9c3cb1d2dc6adc346e6fb7acdee708.0;rport=5060.
Via: SIP/2.0/UDP
172.31.13.202:5060;rport=5060;received=13.232.78.75;branch=z9hG4bK-20254-2185727-0.
From: <sip:[email protected]>;tag=2185727.
To:
<sip:[email protected]>;tag=c99e9820d9036d36e5541ff825b95248-8c22.
Call-ID: [email protected].
CSeq: 1 INVITE.
Server: kamailio (5.1.3 (x86_64/linux)).
Content-Length: 0.
.
```
#### Log Messages
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Kamailio, add them next, or attach to issue, or provide a link to download them
(e.g., to a pastebin site).
-->
```
Jun 29 19:18:14 ip-172-31-4-160 kamailio[8119]: ERROR: <core>
[core/mem/q_malloc.c:287]: qm_find_free(): qm_find_free(0x7fe974b24000, 35992);
Free fragment not found!
Jun 29 19:18:14 ip-172-31-4-160 kamailio[8119]: ERROR: <core>
[core/mem/q_malloc.c:421]: qm_malloc(): qm_malloc(0x7fe974b24000, 35992) called
from http_async_client: http_multi.c: curl_shm_calloc(346), module:
http_async_client; Free fragment not found!
Jun 29 19:18:14 ip-172-31-4-160 kamailio[8119]: ERROR: http_async_client
[http_multi.c:437]: new_request(): curl_easy_init() failed!
```
#### 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
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If you found a solution or workaround for the issue, describe it. Ideally,
provide a pull request with a fix.
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### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
(paste your output here)
```
* **Operating System**:
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16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...;
Kernel details (output of `uname -a`)
-->
```
root@ip-172-31-4-160:/etc/kamailio# uname -a
Linux ip-172-31-4-160 3.13.0-143-generic #192-Ubuntu SMP Tue Feb 27 10:45:36
UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
```
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