[OpenSIPS-Users] Nathelper ping does not consistently ping all contacts

[James Lamanna]

Hi Bogdan,
Unfortunately I've found that it doesn't fix the entire problem.
I have a contact now that is online, that still isn't getting pinged for
some reason.
I think there's something subtle in get_all_mem_contacts in dlist.c.

I haven't tried to see if this problem still manifests itself if the usrloc
mode is DBONLY (its a production server).

But as an example, I have this contact online (from opensipsctl ul show):

AOR:: 22505
Contact:: sip:22505 at 192.168.1.117:7945 Q=
Expires:: 1401
Callid:: c3bfd2f5-50aff633 at 192.168.1.117
Cseq:: 63708
User-agent:: Linksys/SPA962-6.1.3(a)-000e08d21b47
Received:: sip:x.x.x.x.:1024
State:: CS_SYNC
Flags:: 0
Cflag:: 192
Socket:: udp:opensips.ip:5060
Methods:: 5183

I've added a print in nathelper.c:

@@ -3648,8 +3650,11 @@
  continue;
  }
  }
- if (curi.proto != PROTO_UDP && curi.proto != PROTO_NONE)
+ LM_INFO("pinging contact: %*s %*s\n", path.len, path.s, c.len, c.s);
+ if (curi.proto != PROTO_UDP && curi.proto != PROTO_NONE) {
+ LM_ERR("dumping contact: %*s %*s\n", path.len, path.s, c.len, c.s);
  continue;
+ }
  if (curi.port_no == 0)
  curi.port_no = SIP_PORT;
  proto = curi.proto;

I see these prints for a while for this contact:
Jun 30 12:30:53 frontend1 /usr/local/sbin/opensips[7087]:
INFO:nathelper:nh_timer: pinging contact: (null) sip:208.90.185.166:7945??z


And then it just stops.
Restarting Opensips doesn't bring it back either.

unfortunately I haven't had time to digest the code in dlist.c to figure out
what is actually going on in there with the 2 indices.

Thanks.

-- James


On Fri, Jul 1, 2011 at 7:29 AM, Bogdan-Andrei Iancu <bogdan at opensips.org>wrote:

> Hi Andrew,
>
> Thanks God for mentioning this - the initial report from James missed me,
> and I was not aware of the bug and the fix - I just fixed it right now on
> the SVN trunk and 1.6
>
> Thanks and regards,
> Bogdan
>
>
> On 07/01/2011 06:45 AM, Andrew Pogrebennyk wrote:
>
>> James,
>>
>> On 01.07.2011 06:42, James Lamanna wrote:
>>
>>> Hi,
>>> I've noticed after a period of time, Nathelper will stop sending pings to
>>> some contacts.
>>> I've verified that the contact is still registered (it is even in the
>>> location table) but the ping process appears to skip some contacts for
>>> unknown reasons.
>>>
>>
>> maybe see if this fixes the problem for you:
>> http://www.mail-archive.com/**users@lists.opensips.org/**msg16200.html<http://www.mail-archive.com/users@lists.opensips.org/msg16200.html>
>> ?
>>
>>  Could someone please look into this? I have phones behind NAT that stop
>>> being able to receive calls because firewalls close down the UDP mapping
>>> since this feature is not working properly.
>>>
>> --
> Bogdan-Andrei Iancu
> OpenSIPS solutions and "know-how"
>
>
>
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