[SR-Users] Kamailio not updating CSeq after uac_auth() for ACK

Terry Tailor terry at fullduplex.co.uk
Thu Dec 17 12:27:57 CET 2020 

Hi Hennin,
Thank you

I confirm that by updating to Kamailio 5.4 it resolve the issue.
Cheers,
Terry

On Thu, Dec 17, 2020 at 4:09 PM Henning Westerholt <hw at skalatan.de> wrote:

> Hello,
>
>
>
> this might be the reason:
> https://www.mail-archive.com/sr-users@lists.kamailio.org/msg14071.html
>
>
>
> I will release 5.3.8 in the next days which should contain the fix.
>
>
>
> Cheers,
>
>
>
> Henning
>
>
>
> --
>
> Henning Westerholt – https://skalatan.de/blog/
>
> Kamailio services – https://gilawa.com
>
>
>
> *From:* sr-users <sr-users-bounces at lists.kamailio.org> *On Behalf Of *Terry
> Tailor
> *Sent:* Thursday, December 17, 2020 11:23 AM
> *To:* sr-users at lists.kamailio.org
> *Subject:* [SR-Users] Kamailio not updating CSeq after uac_auth() for ACK
>
>
>
> Hi, Here is setup details
>
> Kamailio Proxy a <-----> Kamailio Proxy b  <-----> Asterisk
>
> Kamailio proxy b auth based on IP Kamailio Proxy a
>
> 1. Kamailio proxy sends an Invite request to Kamailio proxy b with CSeq:
> 102 INVITE
>
> 2. Kamailio proxy b check again IP auth and sends invite request to
> asterisk with CSeq: 102 INVITE
>
> 4 asterisk response with 401 Unauthorized with  CSeq: 102
>
> 5. Kamailio proxy b sends ACK request with CSeq: 102 ACK
>
> 6. Kamailio proxy b sends INVITE request with CSeq: 103 INVITE
>
> 7. Asterisk sends 100 trying and 180 ringing with CSeq: 103 INVITE
>
> 8. Kamailio proxy b relay 180 ringing with  CSeq: 102 INVITE
>
> 9. Asterisk send 200 Ok with CSeq: 103 INVITE and proxy b relay it to
> proxy a with CSeq: 102 INVITE
>
> 10. Now Proxy a send an ACK with CSeq: 102 ACK and proxy b relay ACK to
> asterisk with CSeq: 102 ACK
>
>
>
> Now asterisk is retransmitting 200 ok with CSeq: 103 INVITE and proxy a is
> sending ACK with Cseq: 102 ACK
>
>
>
> Same happing in case of 487 Request Terminated
>
>
>
> Here is my config
>
>
>
> modparam("dialog", "default_timeout", 10800) # 3h
> modparam("dialog", "dlg_match_mode", 1)
> modparam("dialog", "db_mode", 0)
> modparam("dialog", "send_bye", 1)
> modparam("dialog", "track_cseq_updates", 1)
> modparam("uac","auth_username_avp","$avp(auser)")
> modparam("uac","auth_password_avp","$avp(apass)")
> modparam("uac","auth_realm_avp","$avp(arealm)")
>
>
>
> modparam("tm", "failure_reply_mode", 3)
> # default retransmission timeout: 3 sec
> modparam("tm", "fr_timer", 2000)
> modparam("tm", "retr_timer1", 250)
> modparam("tm", "retr_timer2", 500)
> # default invite retransmission timeout after 1xx: 60 sec
> modparam("tm", "fr_inv_timer", 60000)
> modparam("tm", "reparse_on_dns_failover", 0)
>
>
>
>
>
>
>
> if (is_method("INVITE") && !has_totag()) {
>         dlg_setflag(FLD_RTPPROXY);
>         dlg_manage();
>     }
>     route(RELAY);
>
>
>
>
>
>
>
>
>
> route[RELAY] {
>
>     # At this point all checks are passed
>     t_on_branch("MANAGE_BRANCH");
>     t_on_reply("MANAGE_REPLY");
>     t_on_failure("MANAGE_FAILURE");
>     if(is_method("INVITE") && isflagset(FLT_FROMDID)) {
>      #$fd = "sip.comms.kuflink.com";
>       t_on_failure("RELAY_AUTH");
>     }
>
>     if (!t_relay()) {
>         send_reply("500", "Cannot relay to $du/$ru");
>     }
>     exit;
> }
>
> failure_route[RELAY_AUTH] {
>     t_on_branch("MANAGE_BRANCH");
>     t_on_reply("MANAGE_REPLY");
>     if (t_is_canceled()) {
>         exit;
>     }
>     if(t_check_status("401|407")) {
>         #$fd = "sip.comms.kuflink.com";
>         $avp(auser) = "DID_UA_USERNAME";
>         $avp(apass) = "DID_UA_PASSWORD";
>         if (uac_auth()) {
>             t_relay();
>         }
>         exit;
>     }
> }
>
>
>
>
>
> route[WITHINDLG] {
>     if (!has_totag()) {
>         return;
>     }
>
>     if (is_method("BYE")) {
>         rtpengine_delete();
>     }
>
>     # sequential request withing a dialog should
>     # take the path determined by record-routing
>     if (loose_route()) {
>         route(DLGURI);
>         if (is_method("ACK")) {
>             # ACK is forwarded statelessly
>             route(NATMANAGE);
>         } else if (is_method("NOTIFY")) {
>             # Add Record-Route for in-dialog NOTIFY as per RFC 6665.
>             record_route();
>         }
>         route(RELAY);
>         exit;
>     }
>
>     if (is_method("SUBSCRIBE") && uri == myself) {
>         # in-dialog subscribe requests
>         route(PRESENCE);
>         exit;
>     }
>     if (is_method("ACK") ) {
>         if (t_check_trans()) {
>             # no loose-route, but stateful ACK;
>             # must be an ACK after a 487
>             # or e.g. 404 from upstream server
>             route(RELAY);
>             exit;
>         } else {
>             # ACK without matching transaction ... ignore and discard
>             exit;
>         }
>     }
>     send_reply("404","Not here");
>     exit;
> }
>
>
>
>
>
> kamailio -v
>
> version: kamailio 5.3.7 (x86_64/linux)
> flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS,
> DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC,
> F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT,
> USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST,
> HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
> ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024,
> BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
> poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
> id: unknown
> compiled with gcc 6.3.0
>
>
>
>
>
> uname -a
>
> Linux example.com 4.15.0-124-generic #127-Ubuntu SMP Fri Nov 6 10:54:43
> UTC 2020 x86_64 GNU/Linux
>
>
>
>
>
>
>
> SIP logs
>
> 2020/12/17 10:08:18.483907 proxy-a.com:5060 -> 10.0.14.118:5060
> INVITE sip:123456 at proxy-a.com SIP/2.0
> Record-Route: <sip:proxy-a.com;lr>
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Max-Forwards: 70
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>
> Contact: <sip:7654321 at did.com:5060>
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> User-Agent: ProxyA
> CSeq: 102 INVITE
> User-Agent: proxy
> Date: Thu, 17 Dec 2020 10:08:18 GMT
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Remote-Party-ID: "7654321" <sip:7654321 at did.com
> >;party=calling;privacy=off;screen=no
> Content-Type: application/sdp
> Content-Length: 885
>
>
>
> 2020/12/17 10:08:18.485063 10.0.14.118:5060 -> proxy-a.com:5060
> SIP/2.0 100 trying -- your call is important to us
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1;rport=5060
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 INVITE
> Server: kamailio (5.3.7 (x86_64/linux))
> Content-Length: 0
>
>
> 2020/12/17 10:08:18.485576 10.0.14.118:5060 -> 10.0.14.118:6000
> INVITE sip:123456 at proxy-a.com SIP/2.0
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.0
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Max-Forwards: 70
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>
> Contact: <sip:7654321 at did.com:5060>
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> User-Agent: ProxyA
> CSeq: 102 INVITE
> User-Agent: proxy
> Date: Thu, 17 Dec 2020 10:08:18 GMT
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Remote-Party-ID: "7654321" <sip:7654321 at did.com
> >;party=calling;privacy=off;screen=no
> Content-Type: application/sdp
> Content-Length: 885
>
>
>
> 2020/12/17 10:08:18.622867 10.0.14.118:6000 -> 10.0.14.118:5060
> SIP/2.0 401 Unauthorized
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.0;received=10.0.14.118;rport=5060
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as4107645c
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 INVITE
> Server: proxy
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> WWW-Authenticate: Digest algorithm=MD5, realm="sip1.comms.kuflink.com",
> nonce="11139d33"
> Content-Length: 0
>
>
>
> 2020/12/17 10:08:18.624034 10.0.14.118:5060 -> 10.0.14.118:6000
> ACK sip:123456 at proxy-a.com SIP/2.0
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.0
> Max-Forwards: 70
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as4107645c
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 ACK
> Content-Length: 0
>
>
>
> 2020/12/17 10:08:18.625557 10.0.14.118:5060 -> 10.0.14.118:6000
> INVITE sip:123456 at proxy-a.com SIP/2.0
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Max-Forwards: 70
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>
> Contact: <sip:7654321 at did.com:5060>
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> User-Agent: ProxyA
> CSeq: 103 INVITE
> User-Agent: proxy
> Date: Thu, 17 Dec 2020 10:08:18 GMT
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Remote-Party-ID: "7654321" <sip:7654321 at did.com
> >;party=calling;privacy=off;screen=no
> Content-Type: application/sdp
> Content-Length: 885
> Authorization: Digest username="xxxxx", realm="xxxx", nonce="11139d33",
> uri="sip:123456 at proxy-a.com", response="qwewqeqwe", algorithm=MD5
>
>
>
> 2020/12/17 10:08:18.779483 10.0.14.118:6000 -> 10.0.14.118:5060
> SIP/2.0 100 Trying
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102;received=10.0.14.118;rport=5060
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 103 INVITE
> Server: proxy
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:123456 at 10.0.14.118:6000>
> Content-Length: 0
>
>
>
>
> 2020/12/17 10:08:20.937756 10.0.14.118:6000 -> 10.0.14.118:5060
> SIP/2.0 180 Ringing
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102;received=10.0.14.118;rport=5060
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 103 INVITE
> Server: proxy
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:123456 at 10.0.14.118:6000>
> Content-Length: 0
>
>
>
> 2020/12/17 10:08:20.938593 10.0.14.118:5060 -> proxy-a.com:5060
> SIP/2.0 180 Ringing
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 INVITE
> Server: proxy
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:123456 at 10.0.14.118:6000;alias=10.0.14.118~6000~1>
> Content-Length: 0
>
>
>
> 2020/12/17 10:08:22.075814 10.0.14.118:6000 -> 10.0.14.118:5060
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102;received=10.0.14.118;rport=5060
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 103 INVITE
> Server: proxy
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:123456 at 10.0.14.118:6000>
> Content-Type: application/sdp
> Require: timer
> Content-Length: 296
>
>
> 2020/12/17 10:08:22.077049 10.0.14.118:5060 -> proxy-a.com:5060
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 INVITE
> Server: proxy
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:123456 at 10.0.14.118:6000;alias=10.0.14.118~6000~1>
> Content-Type: application/sdp
> Require: timer
> Content-Length: 316
>
>
>
> 2020/12/17 10:08:22.103365 proxy-a.com:5060 -> 10.0.14.118:5060
> ACK
> sip:123456 at 10.0.14.118:6000;alias=10.0.14.118~6000~1;alias=109.72.216.251~5060~1
> SIP/2.0
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;branch=z9hG4bKbe6d.0fc1940efc770391762d7d67094c24f8.0
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK2a5fae72;rport=5060
> Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Max-Forwards: 70
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Contact: <sip:7654321 at did.com:5060>
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 ACK
> User-Agent: proxy
> Content-Length: 0
>
>
>
> 2020/12/17 10:08:22.103877 10.0.14.118:5060 -> 10.0.14.118:6000
> ACK sip:123456 at 10.0.14.118:6000;alias=109.72.216.251~5060~1 SIP/2.0
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.79f351d031912aae585207d2f26d5650.0
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.0fc1940efc770391762d7d67094c24f8.0
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK2a5fae72;rport=5060
> Max-Forwards: 70
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Contact: <sip:7654321 at did.com:5060>
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 ACK
> User-Agent: proxy
> Content-Length: 0
> P-K-CSeq-Refresh: 103
>
>
> 2020/12/17 10:08:22.575533 10.0.14.118:6000 -> 10.0.14.118:5060
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102;received=10.0.14.118;rport=5060
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 103 INVITE
> Server: proxy
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:123456 at 10.0.14.118:6000>
> Content-Type: application/sdp
> Require: timer
> Content-Length: 296
>
>
>
> 2020/12/17 10:08:22.576777 10.0.14.118:5060 -> proxy-a.com:5060
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 INVITE
> Server: proxy
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:123456 at 10.0.14.118:6000;alias=10.0.14.118~6000~1>
> Content-Type: application/sdp
> Require: timer
> Content-Length: 316
>
>
>
> 2020/12/17 10:08:22.581649 proxy-a.com:5060 -> 10.0.14.118:5060
> ACK
> sip:123456 at 10.0.14.118:6000;alias=10.0.14.118~6000~1;alias=109.72.216.251~5060~1
> SIP/2.0
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;branch=z9hG4bKbe6d.b9c7eeccd4cd7b44f05b173308dbaf0a.0
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK219933f6;rport=5060
> Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Max-Forwards: 70
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Contact: <sip:7654321 at did.com:5060>
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 ACK
> User-Agent: proxy
> Content-Length: 0
>
>
>
> 2020/12/17 10:08:22.582313 10.0.14.118:5060 -> 10.0.14.118:6000
> ACK sip:123456 at 10.0.14.118:6000;alias=109.72.216.251~5060~1 SIP/2.0
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.33626b5695ad4648ba393bc62bed6a8c.0
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.b9c7eeccd4cd7b44f05b173308dbaf0a.0
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK219933f6;rport=5060
> Max-Forwards: 70
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Contact: <sip:7654321 at did.com:5060>
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 ACK
> User-Agent: proxy
> Content-Length: 0
> P-K-CSeq-Refresh: 103
>
>
> 2020/12/17 10:08:23.575828 10.0.14.118:6000 -> 10.0.14.118:5060
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP proxy-b.com:5060
> ;branch=z9hG4bKbe6d.619fd995c3fc8764ce5cd9c7be7efeef.1.cs102;received=10.0.14.118;rport=5060
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 103 INVITE
> Server: proxy
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:123456 at 10.0.14.118:6000>
> Content-Type: application/sdp
> Require: timer
> Content-Length: 296
>
>
> 2020/12/17 10:08:23.577863 10.0.14.118:5060 -> proxy-a.com:5060
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP proxy-a.com:5060
> ;rport=5060;branch=z9hG4bKbe6d.10c4c5f001c66b8976214d4aef9f635c.1
> Via: SIP/2.0/UDP did.com:5060;received=did.com
> ;branch=z9hG4bK45f94ed9;rport=5060
> Record-Route: <sip:proxy-b.com;lr;did=d18.7a9>
> Record-Route: <sip:proxy-a.com;lr>
> From: "7654321" <sip:7654321 at did.com>;tag=as55c522e1
> To: <sip:123456 at proxy-a.com>;tag=as147bfa3e
> Call-ID: 67675c7e636d6e773860255316e54779 at did.com
> CSeq: 102 INVITE
> Server: proxy
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
> PUBLISH, MESSAGE
> Supported: replaces, timer
> Session-Expires: 1800;refresher=uas
> Contact: <sip:123456 at 10.0.14.118:6000;alias=10.0.14.118~6000~1>
> Content-Type: application/sdp
> Require: timer
> Content-Length: 316
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.kamailio.org/pipermail/sr-users/attachments/20201217/90335d0a/attachment.htm>

More information about the sr-users mailing list