[SR-Users] drouting module: can I use non-digit prefix?

[Daniel-Constantin Mierla]

Hello,

this situation seems to be caused by the fact there is no valid routing 
rule at all.

Can you get the backtrace? First do:

ulimit -c unlimited

Then run again an a corefile should be generated (in / or in working 
directory) - use gdb to get the backtrace:

gdb /path/to/kamailio /path/to/corefile

bt full

Send the output here.

Also send 'kamailio -V' to know exactly your version.

Cheers,
Daniel


On 6/12/12 4:33 PM, Yufei Tao wrote:
> Hi Daniel
>
> Thanks for the reply!
>
> I tried it again and the log seems to suggest it crashed when loading
> the dr_rules table that contains non-digit prefix, e.g. prefix bing 'abc.':
>
> 1. First crash when doing MI command "dr_reload":
> "
> Jun 12 15:19:07 myserver2 /usr/sbin/kamailio[2293]: INFO: drouting
> [drouting.c:476]: "dr_reload" MI command received!
> Jun 12 15:19:08 myserver2 /usr/sbin/kamailio[2293]: ERROR: drouting
> [dr_load.c:251]: failed to add prefix route
> Jun 12 15:19:08 myserver2 /usr/sbin/kamailio[2293]: ERROR: drouting
> [dr_load.c:555]: failed to add rule id 1 -> skipping
> Jun 12 15:19:08 myserver2 /usr/sbin/kamailio[2293]: WARNING: drouting
> [dr_load.c:577]: no valid routing rules -> discarding all destinations
> Jun 12 15:19:08 myserver2 /usr/sbin/kamailio[2357]: : <core>
> [pass_fd.c:293]: ERROR: receive_fd: EOF on 30
> Jun 12 15:19:08 myserver2 /usr/sbin/kamailio[2274]: ALERT: <core>
> [main.c:751]: child process 2293 exited by a signal 11
> Jun 12 15:19:08 myserver2 /usr/sbin/kamailio[2274]: ALERT: <core>
> [main.c:754]: core was not generated
> Jun 12 15:19:08 myserver2 /usr/sbin/kamailio[2274]: INFO: <core>
> [main.c:766]: INFO: terminating due to SIGCHLD
> Jun 12 15:19:08 myserver2 /usr/sbin/kamailio[2357]: INFO: <core>
> [main.c:817]: INFO: signal 15 received
> Jun 12 15:19:08 myserver2 /usr/sbin/kamailio[2356]: INFO: <core>
> [main.c:817]: INFO: signal 15 received
> ... ...
> "
>
> 2. And the second crash on start up (with the bad dr_rules prefix):
>
> "
> Jun 12 15:20:16 myserver2 /usr/sbin/kamailio[5352]: WARNING: drouting
> [dr_load.c:577]: no valid routing rules -> discarding all destinations
> Jun 12 15:20:16 myserver2 /usr/sbin/kamailio[5352]: : <core>
> [mem/q_malloc.c:440]: BUG: qm_free: bad pointer 0x4 (out of memory
> block!) - aborting
> Jun 12 15:20:16 myserver2 /usr/sbin/kamailio[5393]: : <core>
> [pass_fd.c:293]: ERROR: receive_fd: EOF on 30
> Jun 12 15:20:16 myserver2 /usr/sbin/kamailio[5333]: ALERT: <core>
> [main.c:751]: child process 5352 exited by a signal 6
> Jun 12 15:20:16 myserver2 /usr/sbin/kamailio[5393]: DEBUG: <core>
> [tcp_main.c:3555]: DBG: handle_ser_child: dead child 19, pid 5352
> (shutting down?)
> Jun 12 15:20:16 myserver2 /usr/sbin/kamailio[5333]: ALERT: <core>
> [main.c:754]: core was not generated
> Jun 12 15:20:16 myserver2 /usr/sbin/kamailio[5393]: DEBUG: <core>
> [io_wait.h:617]: DBG: io_watch_del (0x825cec0, 30, -1, 0x0) fd_no=65 called
> Jun 12 15:20:16 myserver2 /usr/sbin/kamailio[5333]: INFO: <core>
> [main.c:766]: INFO: terminating due to SIGCHLD
> Jun 12 15:20:16 myserver2 /usr/sbin/kamailio[5392]: INFO: <core>
> [main.c:817]: INFO: signal 15 received
> Jun 12 15:20:16 myserver2 /usr/sbin/kamailio[5391]: INFO: <core>
> [main.c:817]: INFO: signal 15 received
> ... ...
> "
>
> Thanks very much!
>
> Yufei
>
> On 12/06/12 10:53, Daniel-Constantin Mierla wrote:
>> Hello,
>>
>> On 6/1/12 4:57 PM, Yufei Tao wrote:
>>> Hi
>>>
>>> I'm using drouting module and seems that it only allows digit-only
>>> prefixes. Also all the number of digits to be stripped ('strip' defined
>>> in dr_gateways) must be all digits too. When I used non-digits in these,
>>> Kamailio crashed.
>>>
>>> Is there any way in drouting module that I can use prefixes with
>>> alphabet and dots, e.g. "gateway1."? Thanks very much!
>> iirc, drouting accepts only digit based prefixes. Alphanumeric keys
>> are not suitable for tree structures, like used by drouting, because
>> there will be soo many children for each node that will use lot of
>> memory.
>>
>> Anyhow, it should not crash, do you have a backtrace or a log for it?
>>
>> Maybe you can combine several modules to get you go, if you want to
>> use drouting. Like using mtree (it has a way to define the characters
>> allowed in the prefixes -- still not suitable for all the characters)
>> or htable to map your alphanumeric key to a digit only key. Then you
>> can use the result with drouting.
>>
>>
>> Cheers,
>> Daniel
>>
>>> Yufei
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
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