[sr-dev] [kamailio/kamailio] 5.0.* dialogs expiring early (#1182)

Jared Hull notifications at github.com
Fri Jul 7 23:40:45 CEST 2017


### Description
No matter what I set the dialog timeout to, the time between INVITE/ACK and timout and the timeout in the dialog db changed at random. It seems to be between 1 and 3 minutes.

94 seconds between the INVITE/ACK and dialog timeout in this case
Jul  7 21:09:28 dev-dallas-sip2-int /usr/sbin/kamailio[30347]: INFO: <script>: RELAYING INVITE to 999999 at 207.91.156.195:5060 (999999e100a1 -> 102)
Jul  7 21:11:02 dev-dallas-sip2-int /usr/sbin/kamailio[30353]: WARNING: dialog [dlg_handlers.c:1577]: dlg_ontimeout(): timeout for dlg with CallID '0_373726168 at 192.168.1.60' and tags '3498684614' '983bb3d4-38fe-4d47-8d73-c57b85e757d3'

In the database for this dialog, this looks very strange.
start_time	1499461769
timeout	1409235713

### Troubleshooting
I tried to use keep alive in the dialog with ka_timer and ka_interval, I do see the OPTIONS and 200 OK flowing between the two devices and kamailio. This does not prevent the dialog from timing out though.
#### Reproduction
I am just setting the dialog flag on the initial INVITE and let Kamailio do it's thing with the dialog.

modparam("dialog", "db_mode", 1)
modparam("dialog", "default_timeout", 43200) # this should be the default as per kamailio documentation
### Additional Information
* **Kamailio Version**:
```
version: kamailio 5.0.2 (x86_64/linux)
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, 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_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: unknown
compiled on 14:05:03 Jun 14 2017 with gcc 4.8.5
```

* **Operating System**:
```
3.10.0-514.21.1.el7.x86_64 #1 SMP Thu May 25 17:04:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
```

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