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

21 Sep 2021

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
 &lt;sippro97(a)gmail.com <mailto:sippro97@gmail.com>> 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 <http://50.50.50.182:5060>
     listen=tcp: 50.50.50.182:5080 <http://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 <http://50.50.50.210:5060>          
       50.50.50.182:5060 <http://50.50.50.182:5060>            
     50.50.50.182:32818 <http://50.50.50.182:32818>          
     200.200.200.209:5060 <http://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
     <http://50.50.50.210:5060> -> 50.50.50.182:5060
     <http://50.50.50.182:5060>
     INVITE sip:123456789@sip.mydomain.com:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <mailto:sip%3A987654321@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
     <http://50.50.50.182:5060> -> 50.50.50.210:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <http://50.50.50.182:32818> -> 200.200.200.209:5060
     <http://200.200.200.209:5060>
     INVITE sip:123456789@sip.mydomain.com:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <mailto:sip%3A987654321@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
     <http://200.200.200.209:5060> -> 50.50.50.182:32818
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <http://200.200.200.209:5060> -> 50.50.50.182:32818
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <http://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
     <http://50.50.50.182:5060> -> 50.50.50.210:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <http://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
     <http://50.50.50.210:5060> -> 50.50.50.182:5060
     <http://50.50.50.182:5060>
     PRACK sip:123456789@200.200.200.209:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <http://50.50.50.182:5060> -> 200.200.200.209:5060
     <http://200.200.200.209:5060>
     PRACK sip:123456789transport=tcp@200.200.200.209:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <http://50.50.50.210:5060> -> 50.50.50.182:5060
     <http://50.50.50.182:5060>
     PRACK sip:123456789@200.200.200.209:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <http://50.50.50.182:5060> -> 200.200.200.209:5060
     <http://200.200.200.209:5060>
     PRACK sip:123456789transport=tcp@200.200.200.209:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <http://50.50.50.210:5060> -> 50.50.50.182:5060
     <http://50.50.50.182:5060>
     PRACK sip:123456789@200.200.200.209:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <http://50.50.50.182:5060> -> 200.200.200.209:5060
     <http://200.200.200.209:5060>
     PRACK sip:123456789transport=tcp@200.200.200.209:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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
     <http://50.50.50.210:5060> -> 50.50.50.182:5060
     <http://50.50.50.182:5060>
     PRACK sip:123456789@200.200.200.209:5060
     <http://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

<mailto:sip%3A987654321@sip.mydomain.com>>;tag=73622588a6084d8ba1bca54781e5094d
     To: <sip:123456789@sip.mydomain.com
     <mailto:sip%3A123456789@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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Re: [SR-Users] PRACK with UDP to TCP translation send over wrong protocol