[asterisk-dev] how to debug the udp daemon of asterisk

[Ronald Cepres]

Hi arif,

Did you try the asterisk cli command "sip set debug on" command already?

Regards,
Ronald
On Mar 14, 2012 9:15 PM, "Arif Hossain" <freefall1986 at gmail.com> wrote:

> Hi,
>
> I'm using a packet interception module for modifying udp packets coming
> to asterisk sip port. now my packet modification application
> successfully forwards the packet but somehow there is no response from
> asterisk. it may be that the modifications destroyed sanity of the sip
> packet so asterisk is just ignoring it. or there may be problem inside
> my modification rule that is sending to a wrong socket. I want single
> out the problem. to do that i need to find the activity happening in the
> udp daemon runs under the hood of asterisk. so far i've "straced" my
> modification application which reports a successful sendmsg(). as its
> udp datagram it cant say anything about destination. i've straced
> asterisk using "strace asterisk -vvvvdddddd" . it waits in read()
> syscall. i've tried putting garbage data by netcat(nc -uvv
> <asterisk_host> 7160, where 7160 is the sip port i've defined in
> sip.conf) on the listening port of asterisk. but the
> read() does not returns. read() should return at whatever is available
> in udp socket. because packet's sanity check is left for upper layer
> code.
>
> so how should i go about debugging it?
> Thanks in advance.
>
>
>
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