23 Nov
2015
23 Nov
'15
9:58 p.m.
Now I see another problem. Seems it affects 4.1.2 - 4.3.3 versions at least.
This part of script resumes suspended transactions:
route[JOININVITE] {
$var(hjoin) = 0;<------><------>
lock("$tU");
$var(hjoin) = $sht(vtp=>join::$tU);
$sht(vtp=>join::$tU) = $null;
unlock("$tU");
if($var(hjoin)==0)
{
xlog("L_INFO","No suspended transactions for $tU
account\n");
return;
}
# Restore suspended transaction
$var(id_index) = $(var(hjoin){s.select,0,:}{s.int});
$var(id_label) = $(var(hjoin){s.select,1,:}{s.int});
xlog("L_INFO","resuming trasaction [$var(id_index):$var(id_label)]
$tU ($var(hjoin))\n");
$var(rr_proto) = $proto;
$var(rr_ip) = $si;
$var(rr_port) = $sp;
$var(rr_target) = $proto + ":" + $si + ":" + $sp;
t_continue("$var(id_index)", "$var(id_label)",
"RELAYRESUMED");
}
Kamailio runs on internal IPs. Public IP are advertised in configuration file.
fix_nated_contact() is used to help routing - most of softphones run
behind the NAT.
Everything works fine except the case with push notifications i.e.
transaction suspend and resume sequence ( I think so ).
In these cases fix_nated_contact() rewrites the IP addresses to
internal IP only. It does not see (or lost) external source address.
So after a push notification resumed call BYE is sent to the some
internal IP (therefore call is not terminated) and also reINVITEs +
ACK do not work as expected.
I would be happy to hear any idea how to resolve it from server side...
Thank you!
On Mon, Nov 23, 2015 at 7:01 PM, Dmytro Bogovych
<dmytro.bogovych(a)gmail.com> wrote:
(facepalm)
Thank you!
On Mon, Nov 23, 2015 at 6:39 PM, Daniel-Constantin Mierla
<miconda(a)gmail.com> wrote:
> Hello,
>
> probably you want the next snippet:
>
> if (!t_relay())
> xlog("L_INFO","Cannot relay PUSHED
invite.");
> sl_reply_error();
>
>
> to be:
>
> if (!t_relay()) {
> xlog("L_INFO","Cannot relay PUSHED
invite.");
> sl_reply_error();
> }
>
>
> Because you don't have curly braces for the IF block, only the xlog is
> executed in case of error. sl_reply_error() is executed always.
>
> Cheers,
> Daniel
>
> On 23/11/15 17:29, Dmytro Bogovych wrote:
>> Greetings.
>>
>> We build specialized softphone for iOS. Push notifications are used to
>> notify user and wake up softphone app on missed calls and messages.
>>
>> We used Daniel's example config script as base for own configuration
>> file. It has the same parts and does not differ too much. I talk about
>> this example:
http://www.kamailio.org/events/2014-KamailioWorld/day2/26-Daniel-Constantin…
>>
>> Everything was ok for few monthes - with kamailio 4.1.2.
>> Few weeks ago we upgraded to 4.3.3.
>> Now paused calls cannot be resumed properly.
>>
>> Softphone receives 500 Server error (No error 0/SL) in response
>>
>> This is problem part of script:
>>
>> route[RELAYRESUMED] {
>>
>> # enable additional event routes for forwarded requests
>> # - serial forking, RTP relaying handling, a.s.o.
>> if (is_method("INVITE|SUBSCRIBE")) {
>> t_on_branch("MANAGE_BRANCH");
>> t_on_reply("MANAGE_REPLY");
>> }
>> if (is_method("INVITE")) {
>> t_on_failure("MANAGE_FAILURE");
>> }
>> if ($var(rr_target) != "")
>> {
>> xlog("L_INFO","Relay to
$var(rr_ip):$var(rr_port)\n");
>> $ru = "sip:" + $rU + "@" + $var(rr_ip) +
":" +
>> $var(rr_port) + ";transport=" + $var(rr_proto);
>> xlog("L_INFO","Current request URI is
$ru\n");
>> if (!t_relay())
>> xlog("L_INFO","Cannot relay PUSHED
invite.");
>> sl_reply_error();
>> }
>> else
>> {
>> xlog("L_WARN","Target proto is not set\n");
>> sl_reply_error();
>> }
>> exit;
>> }
>>
>> It produces log
>> -----
>> Nov 23 14:42:24 ctdsip3 /usr/local/sbin/kamailio[32141]: INFO:
>> <script>: resuming trasaction [23927:345343979] 1985987629
>> (23927:345343979)
>>
>> Nov 23 14:42:24 ctdsip3 /usr/local/sbin/kamailio[32141]: INFO:
>> <script>: Relay to 95.133.110.17:11791
>>
>> Nov 23 14:42:24 ctdsip3 /usr/local/sbin/kamailio[32141]: INFO:
>> <script>: Current request URI is
>> sip:1985987629@95.133.110.17:11791;transport=tls
>>
>> Nov 23 14:42:24 ctdsip3 /usr/local/sbin/kamailio[32141]: ERROR: sl
>> [sl_funcs.c:363]: sl_reply_error(): ERROR: sl_reply_error used: No
>> error (0/SL)
>>
>> Nov 23 14:42:24 ctdsip3 /usr/local/sbin/kamailio[32141]: INFO:
>> <script>: Checking FAILED messages for 1985987629: 0
>> -----
>>
>> sl_reply_error() sends 500 with No error (0/SL) description. Later 180
>> & 200 are sent.
>>
>> But client softphone terminates transaction already (as it handles 500
>> response code) .
>>
>> There is no "Cannot relay PUSHED invite." message in the log however.
>>
>>
>> I will be happy to heary any idea what can be cause...
>>
>> Thank you!
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>> sr-users(a)lists.sip-router.org
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
> --
> Daniel-Constantin Mierla
> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> Book: SIP Routing With Kamailio - http://www.asipto.com
> Kamailio Advanced Training, Nov 30-Dec 2, Berlin - http://asipto.com/kat
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users(a)lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users