Hi Salah,
I got it working (capturing stateless replies in and out) with the following parameter and routing script snippets.

onsend_route_reply=1

reply_route {                                                                                                                                                                                                                                
    xlog("L_INFO", "Incoming reply: $rm $rs\n");                                                                                                                                                                                                
    if (!t_check_trans()) {                                                                                                                                                                                                                      
        setflag(25);                                                                                                                                                                                                                              
        $var(rc) = sip_trace();                                                                                                                                                                                               
     }                                                                                                                                                                                                                                          
}                                                                                                                                                                                                                                            
onsend_route {
    if ($mt == 2) {                                                                                                                                                                                                                            
        xlog("Sending out reply to $rm: $rs\n");                                                                                                                                                                                                  
        if (isflagset(25)) {                                                                                                                                                                                                                    
            sip_trace();                                                                                                                                                                                                                          
        }                                                                                                                                                                                                                                        
    }                                                                                                                                                                                                                                          
}

In reply_route I had to assign the output of sip_trace to a $var because of en error in sip_trace which prevent the execution of onsend_route if called in reply_route. 
I'm going to fix it soon.

Hope this helps,

Federico

On Mon, Aug 26, 2019 at 4:58 PM Salah Ahmed <txrubel@gmail.com> wrote:
Hello Daniel,

This is correct, we can get the forwarding message with $snd(buf) on the onsend_route. But unfortunately, there have no any sip_trace version to do log with a given message as method argument. 

Actually right now, we using trace_mode=1 setup. But we need to do log only for Kamailio to UAC side, not to do log for both side.

Thanks,
Salah 

On Mon, Aug 26, 2019 at 2:54 AM Daniel-Constantin Mierla <miconda@gmail.com> wrote:

Hello,

the $mb and $msg(buf) still point to incoming message, even in the onsend_route. The content of the outgoing buffer is in $snd(buf).

Isn't trace_mode=1 giving what you need?

  - https://www.kamailio.org/docs/modules/stable/modules/siptrace.html#siptrace.p.trace_mode

Or do you still want to filter some SIP message, not mirror everything?

On the other hand, I expected sip_trace() to take the outgoing buffer in onsend_route when mirroring, maybe it is not doing it for response...

Cheers,
Daniel

On 25.08.19 18:50, Salah Ahmed wrote:
Hello Henning,

I have tried with $msg(buf) in the onsend_route, got those replies received from UAS, but didn't found any replies what kamailio forwarded to UAC. The sip_trace doing same, that's my concern, I think onsend_route we suppose to get those reply messages which kamailio forwarded to UAC.

For sip_trace use, we call sip_trace in the onsend_route, and didn't set siptrace flag(22) anywhere in the script.

Thanks,
Salah 

On Sun, Aug 25, 2019 at 11:41 AM Henning Westerholt <hw@skalatan.de> wrote:

Hello Salah,

add some logging (e.g. print the $mb PV) to see what is captured from the onsend_route. Then you can compare against siptrace content and see if they match or is there something different captured.

You need to call sip_trace() in the onsend_route, the trace_flag capture method does not work there.

Cheers,

Henning

Am 25.08.19 um 18:01 schrieb Salah Ahmed:
Hello Daniel,

Thanks for your reply. We want this not to modify the reply message, we just want to invoke sip_trace from onsend_route. Actually we want to trace all sip messages in between Kamailio and UAC. Right now we can easily grab all requests using onsend_route. We also set the core parameter onsend_route_reply = yes ,This started capturing replies, but those are UAS to Kamailio side replies. For debug I added xlog in the onsend_route and print the reply messages. I am not sure, is that sip_trace method issue or the onsend_route issue. Please guide me is there anything else I can do for it.

Thanks,
Salah  


On Fri, Aug 23, 2019 at 2:29 PM Salah Ahmed <txrubel@gmail.com> wrote:
Hello Henning,

Is there anything wrong what we want to do?

Thanks,
Salah

On Thu, Aug 22, 2019 at 2:56 PM Salah Ahmed <txrubel@gmail.com> wrote:
Hello Henning,

Yes this is correct, this reply came from UAS. We got this correctly. But we want to get, which kamailio sent to UAC side.

This following reply, we want to get by onreply_route

 3(23) DEBUG: <core> [core/msg_translator.c:2306]: generate_res_buf_from_sip_res(): copied size: orig:130, new: 16, rest: 773 msg=
SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.32.100.100:5055;branch=z9hG4bK-254-1-0
Record-Route: <sip:172.32.0.6:5060;lr;ftag=1>
Call-ID: T1_MYSER
From: <sip:caller@172.32.100.100>;tag=1
To: "callee" <sip:3228090000@172.32.0.6>;tag=6fb31703-d630-4140-a41b-7270cdcae85b
CSeq: 1 INVITE
Server: MYX Callcontrol
Contact: <sip:172.32.10.70:5060>
Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, REGISTER, MESSAGE, REFER
Supported: timer, replaces, norefersub
Remote-Party-ID: <sip:s@172.32.0.6>;privacy=off;screen=no
Content-Type: application/sdp
Content-Length:   178

v=0
o=- 53655765 2353687639 IN IP4 172.32.10.70
s=session
c=IN IP4 172.32.10.70
t=0 0
m=audio 10006 RTP/AVP 0
a=rtpmap:0 PCMU/8000
a=ptime:20
a=maxptime:150
a=sendrecv

Thanks,
Salah

On Thu, Aug 22, 2019 at 2:52 PM Henning Westerholt <hw@skalatan.de> wrote:

(moved the discussion to user list)

Hello Salah,

I see the this output in the log message:

 6(26) INFO: <script>: on_reply_route [SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.32.0.6;rport=5060;received=172.32.0.6;branch=z9hG4bKe68a.99dc492fe74dcfe1017828521a5fa362.0

 2(22) INFO: <script>: on_reply_route [SIP/2.0 100 Trying
Via: SIP/2.0/UDP 172.32.0.6;rport=5060;received=172.32.0.6;branch=z9hG4bK178a.79cddb135aabfc42736fd9e9fd826ba8.0

and so on.. So you are seeing the replies correctly, or I wrong?

Cheers,

Henning

Am 22.08.19 um 21:29 schrieb Salah Ahmed:
Hello Henning,

We already added xlog in the onreply_route and found all messages in between kamailio and UAS. The attached log files in first email has those logs. If any other specific log needed I am here to provide them.

Thanks,
Salah

On Thu, Aug 22, 2019 at 2:24 PM Henning Westerholt <hw@skalatan.de> wrote:

Hello Salah,

ok, see if you are able to output some easy log with "xlog" in this route, to make sure there is no cfg problem somewhere.

Cheers,

Henning

Am 22.08.19 um 21:15 schrieb Salah Ahmed:
Hello Henning,

Thanks for quick reply, We armed the t_on_reply just before t_relay() in the route block. 

        t_on_reply("LOGRPL");
        if (!t_relay()) {
                sl_reply_error();
        }

Thanks,
Salah

On Thu, Aug 22, 2019 at 2:03 PM Henning Westerholt <hw@skalatan.de> wrote:

Hello Salah,

the replies are going from the UAS to the UAC over Kamailo as a proxy, with the exception of the hop-by-hop 100.

So you should see the 200 OK in the Kamailio in reply_route and onreply_route. Maybe you can check if you armed the onreply_route with t_on_reply for the INVITE routing.

Cheers,

Henning

Am 22.08.19 um 19:50 schrieb Salah Ahmed:
Hello,

We facing an issue on capturing sip message in Kamailio(Version: 5.2.3). The scenario is very simple.

UAC                    Kamailio                UAS
 |--------INVITE--------->|                     |
 |                        |-------INVITE------->|
 |                        |<------100 Trying----|
 |<-------100 Trying------|                     |
 |                        |<------200 Ok--------|
 |<-------200 Ok----------|                     |

In this simple scenario, we can't catch any reply messages in between the Kamailio and UAC. We have tried reply_route, onreply_route, and onsend_route. But no one work to grep that reply on that side. onsend_route was bad try as its only for forwarded reply message. Is there any other magic to capture those replies. A debug=3 log message attached here. 

Thanks,
Salah




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