Re: [SR-Users] PRACK with UDP to TCP translation send over wrong protocol

21 Sep 2021

Hi Daniel,

Thank you for your prompt response!

I sent the wrong trace with the added transport=tcp test. Yes we tried to
add the transport=tcp on config to overcome this issue but it was not
resolved. I will contact the provider to ask them to add the transport on
their 183 and I believe it will resolve the issue.
In case they cannot do this is there an alternative to bypass this? As per
now we have the save issue also on our ACK and BYE replies we send to the
provider which is logical.

Kind regards,
Angelo

Στις Τρί, 21 Σεπ 2021 στις 5:03 μ.μ., ο/η Daniel-Constantin Mierla <
miconda(a)gmail.com&gt; έγραψε:

...
  Hello,

 the contact of the 183 has no transport parameter, which means it is the
 default one, respectively UDP. If the Provider wants traffic over TCP, the
 contact has to be with that transport parameter.

 I see that incoming PRACK has R-URI without transport parameter, but the
 one to be forwarded has a malformed version where transport=tcp is
 misplaced, probably due to a wrong config operation. If you do it in
 kamailio.cfg, you have to append ";transport=tcp" to $ru (whole r-uri), not
 to $rU (only user part of r-uri).

 Cheers,
 Daniel
 On 21.09.21 15:29, Angelo Sipper wrote:

 Correction
 UAC (OverTLS) ->(TLS)Kamailio1(UDP)-> (UDP)Kamailio2(TCP)-> (TCP)Provider

 Στις Τρί, 21 Σεπ 2021 στις 4:28 μ.μ., ο/η Angelo Sipper <
 sippro97(a)gmail.com&gt; έγραψε:

  Hello,

 We have the following setup and I am having trouble passing the PRACK
 with correct protocol to the provider.

 UAC (OverTLS) ->(UDP)Kamailio1 (UDP)-> (UDP)Kamailio2 (TCP)->
 (TCP)Provider

 UAC : 10.2.1.160 NATED to 100.100.100.61 <http://50.50.50.50:5065/> (TLS)
 Kamailio1 Sockets: 50.50.50.210:5061 <http://170.170.170.210:5061/>
  (TLS),50.50.50.210:5060 <http://170.170.170.210:5060/> (UDP)
 Kamailio2 Sockets: 50.50.50.182:5060 <http://170.170.170.170:5060/> (UDP)
 50.50.50.182:5080 <http://170.170.170.170:5060/> (TCP)
 Provider: 200.200.200.209:5060 <http://200.200.200.193:5060/> (TCP)

 We use dispatcher on Kamailio1 & Kamailio2
 The invite goes fine from UCA up to the provider and the provider
 responses arrive to UAC fine.
 The PRACK from UAC to kamailio1 goes fine to Kamaili02 but, Kamailio2
 uses the UDP socket to send to the provider so the PRACK does not arrive to
 the provider and the call is canceled.
 If the provider is on UDP everything works fine.

 Below I have the trace. What should I look for in the config to resolve
 this wrong protocol/socket on the PRACK?

 Kamailio2 Details:

 Sockets
 ======
 listen=udp:50.50.50.182:5060
 listen=tcp: 50.50.50.182:5080

 On the rr module I have
 ==================
 modparam("rr", "enable_double_rr", 1)
 modparam("rr", "append_fromtag", 1)
 modparam("rr", "enable_full_lr", 1)

 CONFIG REQINIT & WITHINDLG PARTS
 ================================
 route[REQINIT] {

 set_reply_no_connect();
 force_rport();

 if (!mf_process_maxfwd_header("10")) {
 xlog("L_ERROR","Too Many Hops Rejecting!");
 sl_send_reply("483","Too Many Hops");
 exit;
 }

 if(is_method("OPTIONS") && uri==myself && $rU==$null) {
 sl_send_reply("200","Keepalive");
 exit;
 }

 if(!sanity_check("1511", "7")) {
 xlog("Malformed SIP message from $si:$sp sanity 1511\n");
 exit;
 }

 if(!sanity_check("17895", "7")) {
 xlog("Malformed SIP request from $si:$sp sanity 17895\n");
 exit;
 }
 }

 route[WITHINDLG] {
 if (!has_totag()) return;

 if (loose_route()) {

 if (is_method("BYE")) {
 rtpengine_query();
 rtpengine_delete();
 }
 route(RELAY_OUT);
 }

 if ( is_method("ACK") ) {
 #if (t_lookup_request()) {
 if (t_check_trans()) {
 route(RELAY_OUT);
 exit;
 } else {
 # ACK without matching transaction ... ignore and discard
 exit;
 }
 }

 sl_send_reply("404","Not Allowed");
 exit;
 }

 TRACE
 ======
            50.50.50.210:5060             50.50.50.182:5060
 50.50.50.182:32818           200.200.200.209:5060
           qqqqqqqqqqwqqqqqqq            qqqqqqqqqqwqqqqqqq
  qqqqqqqqqqwqqqqqqqq          qqqqqqqqqqqwqqqqqqqqq
 a 15:31:11.787490   x        INVITE (SDP)         x
       x                             x
 a       +0.003099   x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
       x                             x
 a 15:31:11.790589   x  100 trying -- your call is x
       x                             x
 a       +0.002220   x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
       x                             x
 a 15:31:11.792809   x                             x
       x        INVITE (SDP)         x
 a       +0.020725   x                             x
       x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
 a 15:31:11.813534   x                             x
       x         100 Trying          x
 a       +2.628884   x                             x
       x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
 a 15:31:14.442418   x                             x
       x  183 Session Progress (SDP) x
 a       +0.001572   x                             x
       x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
 a 15:31:14.443990   x  183 Session Progress (SDP) x
       x                             x
 a       +0.299221   x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
       x                             x
 a 15:31:14.743211   x            PRACK            x
       x                             x
 a       +0.043114   x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
       x                             x
 a 15:31:14.786325   x                             x
     PRACK                           x
 a       +0.448104   x                             x
 qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq> x
 a 15:31:15.234429   x            PRACK            x
       x                             x
 a       +0.045697   x qqqqqqqqqqqqqqqqqqqqqqqq>>> x
       x                             x
 a 15:31:15.280126   x                             x
     PRACK                           x
 a       +0.954153   x                             x
 qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
 a 15:31:16.234279   x            PRACK            x
       x                             x
 a       +0.045832   x qqqqqqqqqqqqqqqqqqqqqqqq>>> x
       x                             x
 a 15:31:16.280111   x                             x
     PRACK                           x
 a       +1.954170   x                             x
 qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
 a 15:31:18.234281   x            PRACK            x
       x                             x
 a       +0.045839   x qqqqqqqqqqqqqqqqqqqqqqqq>>> x
       x                             x
 a 15:31:18.280120   x                             x
     PRACK                           x
 a       +1.829676   x                             x
 qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
 a 15:31:20.109796   x                             x
       x  183 Session Progress (SDP) x
 a       +0.001460   x                             x
       x <<<qqqqqqqqqqqqqqqqqqqqqqqq x
 a 15:31:20.111256   x  183 Session Progress (SDP) x
       x                             x
 a       +2.123075   x <<<qqqqqqqqqqqqqqqqqqqqqqqq x
       x                             x
 a 15:31:22.234331   x            PRACK            x
       x                             x
 a       +0.045825   x qqqqqqqqqqqqqqqqqqqqqqqq>>> x
       x                             x
 a 15:31:22.280156   x                             x
     PRACK                           x
 a       +2.239640   x                             x
 qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
 a 15:31:24.519796   x                             x
       x        486 Busy Here        x
 a       +0.000555   x                             x
       x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
 a 15:31:24.520351   x                             x
       x             ACK             x
 a       +0.008965   x                             x
       x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
 a 15:31:24.529316   x        486 Busy Here        x
       x                             x
 a       +0.000835   x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
       x                             x
 a 15:31:24.530151   x             ACK             x
       x                             x
 a       +1.704184   x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
       x                             x
 a 15:31:26.234335   x            PRACK            x
       x                             x
 a       +0.045856   x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
       x                             x
 a 15:31:26.280191   x                             x
     PRACK                           x
 a       +3.954734   x                             x
 qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
 a 15:31:30.234925   x            PRACK            x
       x                             x
 x       +0.045279   x qqqqqqqqqqqqqqqqqqqqqqqq>>> x
       x                             x
 x 15:31:30.280204   x                             x
     PRACK                           x
 x       +3.954116   x                             x
 qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
 x 15:31:34.234320   x            PRACK            x
       x                             x

 2021/09/21 15:31:11.787490 50.50.50.210:5060 -> 50.50.50.182:5060
 INVITE sip:123456789@sip.mydomain.com:5060 SIP/2.0
 Record-Route:

<sip:50.50.50.210;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
 Record-Route:

<sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
 Via: SIP/2.0/UDP
 50.50.50.210;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
 Max-Forwards: 69
 From: 987654321 <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>
 Contact: "MyUserNAme"
 <sip:mycustomerid@10.2.1.160:58568;transport=TLS;ob;alias=100.100.100.61~48572~3>
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14320 INVITE
 Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY,
 REFER, MESSAGE, OPTIONS
 Supported: replaces, 100rel, timer, norefersub
 Session-Expires: 1800
 Min-SE: 90
 User-Agent: MicroSIP/3.20.5
 Content-Type: application/sdp
 Content-Length:   326
 P-Asserted-Identity: <sip:987654321@sip.mydomain.com>

 v=0
 o=- 3841227071 3841227071 IN IP4 50.50.50.215
 s=pjmedia
 b=AS:84
 t=0 0
 a=X-nat:0
 m=audio 36448 RTP/AVP 8 0 101
 c=IN IP4 50.50.50.215
 b=TIAS:64000
 a=ssrc:2024148033 cname:4f2468fd611910fa
 a=rtpmap:8 PCMA/8000
 a=rtpmap:0 PCMU/8000
 a=rtpmap:101 telephone-event/8000
 a=fmtp:101 0-16
 a=sendrecv
 a=rtcp:36449

 2021/09/21 15:31:11.790589 50.50.50.182:5060 -> 50.50.50.210:5060
 SIP/2.0 100 trying -- your call is important to us
 Via: SIP/2.0/UDP
 50.50.50.210;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3;rport=5060
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
 From: 987654321 <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14320 INVITE
 Server: myserver
 Content-Length: 0

 2021/09/21 15:31:11.792809 50.50.50.182:32818 -> 200.200.200.209:5060
 INVITE sip:123456789@sip.mydomain.com:5060 SIP/2.0
 Record-Route:

<sip:50.50.50.182:5080;transport=tcp;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 Record-Route:
 <sip:50.50.50.182;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 Record-Route:

<sip:50.50.50.210;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
 Record-Route:

<sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
 Via: SIP/2.0/TCP 50.50.50.182:5080
 ;branch=z9hG4bK37fe.254ecab744d678154779037580c59731.0
 Via: SIP/2.0/UDP
 50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
 Max-Forwards: 68
 From: 987654321 <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>
 Contact: "MyUserNAme"
 <sip:mycustomerid@10.2.1.160:58568;transport=TLS;ob;alias=100.100.100.61~48572~3>
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14320 INVITE
 Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY,
 REFER, MESSAGE, OPTIONS
 Supported: replaces, 100rel, timer, norefersub
 Session-Expires: 1800
 Min-SE: 90
 Content-Type: application/sdp
 Content-Length:   326
 P-Asserted-Identity: <sip:987654321@sip.mydomain.com>

 v=0
 o=- 3841227071 3841227071 IN IP4 50.50.50.183
 s=pjmedia
 b=AS:84
 t=0 0
 a=X-nat:0
 m=audio 29308 RTP/AVP 8 0 101
 c=IN IP4 50.50.50.183
 b=TIAS:64000
 a=ssrc:2024148033 cname:4f2468fd611910fa
 a=rtpmap:8 PCMA/8000
 a=rtpmap:0 PCMU/8000
 a=rtpmap:101 telephone-event/8000
 a=fmtp:101 0-16
 a=sendrecv
 a=rtcp:29309

 2021/09/21 15:31:11.813534 200.200.200.209:5060 -> 50.50.50.182:32818
 SIP/2.0 100 Trying
 Via: SIP/2.0/TCP 50.50.50.182:5080
 ;branch=z9hG4bK37fe.254ecab744d678154779037580c59731.0
 Via: SIP/2.0/UDP
 50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
 From: 987654321 <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>;tag=gK0d8c9073
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14320 INVITE
 Content-Length: 0

 2021/09/21 15:31:14.442418 200.200.200.209:5060 -> 50.50.50.182:32818
 SIP/2.0 183 Session Progress
 Via: SIP/2.0/TCP 50.50.50.182:5080
 ;branch=z9hG4bK37fe.254ecab744d678154779037580c59731.0
 Via: SIP/2.0/UDP
 50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
 From: 987654321 <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>;tag=gK0d8c9073
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14320 INVITE
 Record-Route:

<sip:50.50.50.182:5080;transport=tcp;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 Record-Route:

<sip:50.50.50.182:5060;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 Record-Route:

<sip:50.50.50.210:5060;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
 Record-Route:

<sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
 Contact: <sip:123456789@200.200.200.209:5060>
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Require: 100rel
 RSeq: 1509
 Content-Length:  241
 Content-Disposition: session; handling=required
 Content-Type: application/sdp

 v=0
 o=Sonus_UAC 12038 7929 IN IP4 200.200.200.209
 s=SIP Media Capabilities
 c=IN IP4 200.200.200.212
 t=0 0
 m=audio 17366 RTP/AVP 8 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:101 telephone-event/8000
 a=fmtp:101 0-15
 a=sendrecv
 a=maxptime:20

 2021/09/21 15:31:14.443990 50.50.50.182:5060 -> 50.50.50.210:5060
 SIP/2.0 183 Session Progress
 Via: SIP/2.0/UDP
 50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
 From: 987654321 <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>;tag=gK0d8c9073
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14320 INVITE
 Record-Route:

<sip:50.50.50.182:5080;transport=tcp;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 Record-Route:

<sip:50.50.50.182:5060;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 Record-Route:

<sip:50.50.50.210:5060;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
 Record-Route:

<sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
 Contact: <sip:123456789@200.200.200.209:5060>
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Require: 100rel
 RSeq: 1509
 Content-Length:  253
 Content-Disposition: session; handling=required
 Content-Type: application/sdp

 v=0
 o=Sonus_UAC 12038 7929 IN IP4 50.50.50.183
 s=SIP Media Capabilities
 c=IN IP4 50.50.50.183
 t=0 0
 m=audio 29320 RTP/AVP 8 101
 a=maxptime:20
 a=rtpmap:8 PCMA/8000
 a=rtpmap:101 telephone-event/8000
 a=fmtp:101 0-15
 a=sendrecv
 a=rtcp:29321

 2021/09/21 15:31:14.743211 50.50.50.210:5060 -> 50.50.50.182:5060
 PRACK sip:123456789@200.200.200.209:5060 SIP/2.0
 Via: SIP/2.0/UDP
 50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
 Max-Forwards: 69
 From: "MyUserNAme" <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>;tag=gK0d8c9073
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14321 PRACK
 Route:

<sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 Route:

<sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 RAck: 1509 14320 INVITE
 Content-Length:  0

 2021/09/21 15:31:14.786325 50.50.50.182:5060 -> 200.200.200.209:5060
 PRACK sip:123456789transport=tcp@200.200.200.209:5060 SIP/2.0
 Via: SIP/2.0/UDP
 50.50.50.182;branch=z9hG4bK47fe.3406fe45bb75c3e955b6aa67e53aff58.0
 Via: SIP/2.0/UDP
 50.50.50.210;rport=5060;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
 Max-Forwards: 68
 From: "MyUserNAme" <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>;tag=gK0d8c9073
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14321 PRACK
 RAck: 1509 14320 INVITE
 Content-Length:  0

 2021/09/21 15:31:15.234429 50.50.50.210:5060 -> 50.50.50.182:5060
 PRACK sip:123456789@200.200.200.209:5060 SIP/2.0
 Via: SIP/2.0/UDP
 50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
 Max-Forwards: 69
 From: "MyUserNAme" <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>;tag=gK0d8c9073
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14321 PRACK
 Route:

<sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 Route:

<sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 RAck: 1509 14320 INVITE
 Content-Length:  0

 2021/09/21 15:31:15.280126 50.50.50.182:5060 -> 200.200.200.209:5060
 PRACK sip:123456789transport=tcp@200.200.200.209:5060 SIP/2.0
 Via: SIP/2.0/UDP
 50.50.50.182;branch=z9hG4bK47fe.3406fe45bb75c3e955b6aa67e53aff58.0
 Via: SIP/2.0/UDP
 50.50.50.210;rport=5060;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
 Max-Forwards: 68
 From: "MyUserNAme" <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>;tag=gK0d8c9073
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14321 PRACK
 RAck: 1509 14320 INVITE
 Content-Length:  0

 2021/09/21 15:31:16.234279 50.50.50.210:5060 -> 50.50.50.182:5060
 PRACK sip:123456789@200.200.200.209:5060 SIP/2.0
 Via: SIP/2.0/UDP
 50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
 Max-Forwards: 69
 From: "MyUserNAme" <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>;tag=gK0d8c9073
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14321 PRACK
 Route:

<sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 Route:

<sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 RAck: 1509 14320 INVITE
 Content-Length:  0

 2021/09/21 15:31:16.280111 50.50.50.182:5060 -> 200.200.200.209:5060
 PRACK sip:123456789transport=tcp@200.200.200.209:5060 SIP/2.0
 Via: SIP/2.0/UDP
 50.50.50.182;branch=z9hG4bK47fe.3406fe45bb75c3e955b6aa67e53aff58.0
 Via: SIP/2.0/UDP
 50.50.50.210;rport=5060;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
 Max-Forwards: 68
 From: "MyUserNAme" <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>;tag=gK0d8c9073
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14321 PRACK
 RAck: 1509 14320 INVITE
 Content-Length:  0

 2021/09/21 15:31:18.234281 50.50.50.210:5060 -> 50.50.50.182:5060
 PRACK sip:123456789@200.200.200.209:5060 SIP/2.0
 Via: SIP/2.0/UDP
 50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
 Via: SIP/2.0/TLS 10.2.1.160:58568

;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
 Max-Forwards: 69
 From: "MyUserNAme" <sip:987654321@sip.mydomain.com
 ;tag=73622588a6084d8ba1bca54781e5094d  To:
<sip:123456789@sip.mydomain.com>;tag=gK0d8c9073
 Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
 CSeq: 14321 PRACK
 Route:

<sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 Route:

<sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
 RAck: 1509 14320 INVITE
 Content-Length:  0

 Any help will be much appreciated.

 Kind regards,
 Angelo

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 Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda --
www.linkedin.com/in/miconda
 Kamailio Advanced Training - Online
 Nov 08-11, 2021 (Europe Timezone) - Nov 22-25, 2021 (America Timezone)
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Re: [SR-Users] PRACK with UDP to TCP translation send over wrong protocol