Re: [SR-Users] WS to WS calls - No ACK received for 200OK

Amit Patkar Tue, 21 Jun 2016 06:53:56 -0700

Thanks guys.

Yes. I have set advertised_address parameter.

I tried configuration changes suggested by Dimitry, but its now throwingfollowing error and dropping call

Jun 21 19:07:15 acstemplate /usr/sbin/kamailio[7869]: ERROR: <core>[resolve.c:1693]: sip_hostport2su(): could not resolve hostname:"plfil8pkosnv.invalid"Jun 21 19:07:15 acstemplate /usr/sbin/kamailio[7869]: ERROR: tm[ut.h:319]: uri2dst2(): failed to resolve "plfil8pkosnv.invalid"Jun 21 19:07:15 acstemplate /usr/sbin/kamailio[7869]: ERROR: tm[t_fwd.c:1711]: t_forward_nonack(): ERROR: t_forward_nonack: failure toadd branchesJun 21 19:07:15 acstemplate /usr/sbin/kamailio[7869]: ERROR: sl[sl_funcs.c:363]: sl_reply_error(): ERROR: sl_reply_error used:Unresolvable destination (478/SL)


Thanks & Regards,
Amit Patkar

On 6/21/2016 5:50 PM, Nagorny, Dimitry wrote:


Hi Amit,

I had the same issue reported here last week. Here is the part how Isolved it for the moment on Kamailio 4.3.5 with JsSIP:


route[WITHINDLG] {

if (!has_totag()) {

return;

}

if (loose_route()) {

if ($du == "") {

if (!handle_ruri_alias()) {

xlog("L_ERR", "Bad alias <$ru>\n");

sl_send_reply("400", "Bad Request");

exit;

}

}

if (is_method("BYE")) {

setflag(FLT_ACC);

setflag(FLT_ACCFAILED);

if (src_ip==$sel(cfg_get.pstn.gw_ip) &&$fd==$sel(cfg_get.free.switch_ip)){

$du="sip:" + $sel(cfg_get.free.switch_ip) + ":" +$sel(cfg_get.free.switch_port) + ";transport=tls";


force_send_socket(tls:MY_INTERN_IP:MY_INTERN_PORT);

} *else if (proto==WSS && $ru=~"transport=ws") {*

*$ru = $tu;*

*lookup("location");*

*}*

} else if (is_method("ACK")) {

*if (proto==WSS && $ru=~"transport=ws") {*

*$ru = $tu;*

*lookup("location");*

*}*

}

route(RELAY);

} else {

if (is_method("ACK")) {

if (t_check_trans()) {

route(RELAY);

} else {

exit;

}

}

sl_send_reply("404","Not here");

}

exit;

}

As you can see, the additions in bold, I had to retrieve the contactinformation from the DB again. This only apllies for communicationfrom ws to ws. This might be a n00bish solution but it works for me.


Best Regards

*Dimitry Nagorny*

Trainee

*Von:*sr-users [mailto:sr-users-boun...@lists.sip-router.org] *ImAuftrag von *Alexandru Covalschi

*Gesendet:* Dienstag, 21. Juni 2016 13:50

*An:* a...@avhan.com; Kamailio (SER) - Users Mailing List<sr-users@lists.sip-router.org>

*Betreff:* Re: [SR-Users] WS to WS calls - No ACK received for 200OK

The problem may be with record_route header.

Did you set /advertised_address?/

2016-06-21 12:59 GMT+03:00 Amit Patkar <a...@avhan.com<mailto:a...@avhan.com>>:


    Hi

    I am using Kamailio as Websocket proxy.

    User 1 & User 2 are registered on Kamailio over WebSocket.
    When User 1 calls User 2, User 2 gets ring and answers the call.
    200 OK message is received by User 1 but ACK response sent by User
    1 does not reach User 2. Since User 2 didn't get ACS, after 30 sec
    timeout it drops the call.
    Media is exchanged for 30 seconds, which means ICE is successful.

    I am running kamailio 4.3.3 on

    Kamailio is behind firewall and running on private IP.
    rtpengine is configured to handle media.
    All ports are forwarded to kamailio server and Kamailio is allowed
    to send data on any public IP.

    I used jssip & sipml framework to test. Result was same for both
    frameworks. No ACK received

    I can see following errors in log file. What could be the reason
    which indicate ACK was not forwarded

    Jun 21 14:55:41 acstemplate /usr/sbin/kamailio[6584]: NOTICE: acc
    [acc.c:317]: acc_log_request(): ACC: transaction answered:
    
timestamp=1466501141;method=INVITE;from_tag=7926B9NR7U0X99ZfAr1T;to_tag=w3D2JGd2EUFJpobTcFyo;call_id=1edc8e15-f1f1-584d-df81-71c3d59d713d;code=200;reason=OK;src_user=10001;src_domain=xxxx.com
    
<http://xxxx.com>;src_ip=xxx.yyy.zzz.aaa;dst_ouser=10002;dst_user=10002;dst_domain=df7jal23ls0d.invalid
    Jun 21 14:55:41 acstemplate /usr/sbin/kamailio[6582]: ERROR:
    <core> [forward.c:529]: forward_request(): cannot forward to af 2,
    proto 5 no corresponding listening socket
    Jun 21 14:55:41 acstemplate /usr/sbin/kamailio[6582]: ERROR: sl
    [sl_funcs.c:363]: sl_reply_error(): ERROR: sl_reply_error used:
    I'm terribly sorry, server error occurred (7/SL)
    Jun 21 14:55:42 acstemplate /usr/sbin/kamailio[6584]: INFO:
    <script>: WS to WS
    Jun 21 14:55:42 acstemplate /usr/sbin/kamailio[6582]: ERROR:
    <core> [forward.c:529]: forward_request(): cannot forward to af 2,
    proto 5 no corresponding listening socket
    Jun 21 14:55:42 acstemplate /usr/sbin/kamailio[6582]: ERROR: sl
    [sl_funcs.c:363]: sl_reply_error(): ERROR: sl_reply_error used:
    I'm terribly sorry, server error occurred (7/SL)
    Jun 21 14:55:46 acstemplate /usr/sbin/kamailio[6582]: ERROR:
    <core> [forward.c:529]: forward_request(): cannot forward to af 2,
    proto 5 no corresponding listening socket
    Jun 21 14:55:46 acstemplate /usr/sbin/kamailio[6582]: ERROR: sl
    [sl_funcs.c:363]: sl_reply_error(): ERROR: sl_reply_error used:
    I'm terribly sorry, server error occurred (7/SL)
    Jun 21 14:55:51 acstemplate /usr/sbin/kamailio[6582]: ERROR:
    <core> [forward.c:529]: forward_request(): cannot forward to af 2,
    proto 5 no corresponding listening socket
    Jun 21 14:55:51 acstemplate /usr/sbin/kamailio[6582]: ERROR: sl
    [sl_funcs.c:363]: sl_reply_error(): ERROR: sl_reply_error used:
    I'm terribly sorry, server error occurred (7/SL)
    Jun 21 14:55:57 acstemplate /usr/sbin/kamailio[6582]: ERROR:
    <core> [forward.c:529]: forward_request(): cannot forward to af 2,
    proto 5 no corresponding listening socket
    Jun 21 14:55:57 acstemplate /usr/sbin/kamailio[6582]: ERROR: sl
    [sl_funcs.c:363]: sl_reply_error(): ERROR: sl_reply_error used:
    I'm terribly sorry, server error occurred (7/SL)
    Jun 21 14:56:13 acstemplate /usr/sbin/kamailio[6581]: ERROR:
    <core> [forward.c:529]: forward_request(): cannot forward to af 2,
    proto 5 no corresponding listening socket
    Jun 21 14:56:13 acstemplate /usr/sbin/kamailio[6581]: ERROR: sl
    [sl_funcs.c:363]: sl_reply_error(): ERROR: sl_reply_error used:
    I'm terribly sorry, server error occurred (7/SL)

    I searched list for similar issues but could not find match any

    Help to resolve this issue is appreciated.

    Thanks & Regards,

    Amit Patkar


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--

Alexandru Covalschi
ABRISS-Solutions

VoIP engineer and system administrator
tel: +37367398493
web: http://abriss.solutions/ <http://abs-telecom.com/>



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Re: [SR-Users] WS to WS calls - No ACK received for 200OK

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