14 Jan
2020
14 Jan
'20
3:07 p.m.
## Description
Hello all, I'm migrating my Kamailio logics from legacy .cfg file to KEMI script.
I began with Python but switched then to Lua, but there are some subclass / functions
described in KEMI documentation that seem not to be present in Lua KSR object.
In this case, I am having trouble with the subclass "kx" described
[here](https://kamailio.org/docs/tutorials/devel/kamailio-kemi-framework/mod…
which is used in the default Lua script example
[here](https://github.com/kamailio/kamailio/blob/ca49dc0344f2ca4eae1999f6b46…
The error in the logs:
```bash
app_lua [app_lua_api.c:726]: app_lua_run_ex(): error from Lua:
/etc/kamailio/kamailio.lua:196: attempt to index field 'kx' (a nil value)
```
Referring to the following line in my Lua script:
```lua
function ksr_route_reqinit()
if not KSR.is_myself_srcip() then
local srcip = KSR.kx.get_srcip();
if KSR.htable.sht_match_name("ipban", "eq", srcip) > 0 then
-- ip is already blocked
KSR.dbg("request from blocked IP - " .. KSR.pv.get("$rm")
.. " from " .. KSR.kex.gete_furi() .. " (IP:"
.. srcip .. ":" .. KSR.kex.get_srcport() .. ")\n");
KSR.x.exit();
end
if KSR.pike.pike_check_req() < 0 then
KSR.err("ALERT: pike blocking " .. KSR.pv.get("$rm")
.. " from " .. KSR.kex.gete_furi() .. " (IP:"
.. srcip .. ":" .. KSR.kex.get_srcport() .. ")\n");
KSR.htable.sht_seti("ipban", srcip, 1);
KSR.x.exit();
end
end
end
```
- Should this function be available through KSR object ? If yes we're talking about an
issue
Or
- Is this function not supported anymore / not with app_lua ? In this case we should fix
the documentation + the example script
### Troubleshooting
Debian Jessie
Kamailio 5.3
Lua 5.2
#### Reproduction
I tried different versions, all KO (Kamailio 5.2, 5.3, and last commit on master: kamailio
5.4.0-dev3 (x86_64/linux) 5afe1e)
1. Install Debian Jessie
2. Clone Kamilio GIT
3. Build from source with make (enabling the desired modules before)
4. Insert Lua script (demo one is fine to reproduce my issue)
#### Debugging Data
```bash
aaaa@bbbbb:/# kamailio -V
version: kamailio 5.4.0-dev3 (x86_64/linux) 5afe1e
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST,
DNS_IP_HACK, 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, TLS_PTHREAD_MUTEX_SHARED
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: 5afe1e
compiled on 14:27:15 Jan 14 2020 with gcc 6.3.0
```
#### Log Messages
```bash
app_lua [app_lua_api.c:726]: app_lua_run_ex(): error from Lua:
/etc/kamailio/kamailio.lua:196: attempt to index field 'kx' (a nil value)
```
#### SIP Traffic
Any message going through ksr_route_reqinit() function is triggering the error
Thanks !
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