[SR-Users] Kamailio like SBC with Teams

sip user sipuser404 at gmail.com
Thu Apr 16 16:47:53 CEST 2020


Hi Nasida.. Thanks for answerd to me...

I've activarted the debugger module, and I see the same:

Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
[ip_addr.c:243]: print_ip(): tcpconn_new: new tcp connection: 52.114.7.24
Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
[tcp_main.c:1073]: tcpconn_new(): tcpconn_new: on port 4160, type 3
Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
[tcp_main.c:1382]: tcpconn_add(): tcpconn_add: hashes: 171:1857:1187, 30
Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
[io_wait.h:388]: io_watch_add(): DBG: io_watch_add(0xa1f240, 23, 2,
0x7f90f2438f80), fd_no=17
Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
[io_wait.h:610]: io_watch_del(): DBG: io_watch_del (0xa1f240, 23, -1, 0x0)
fd_no=18 called
Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
[tcp_main.c:4219]: handle_tcpconn_ev(): tcp: DBG: sending to child, events 1
Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
[tcp_main.c:3902]: send2child(): selected tcp worker 1 10(23159) for
activity on [tls:SBC_IP:5061], 0x7f90f2438f80
Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
[tcp_read.c:1507]: handle_io(): received n=8 con=0x7f90f2438f80, fd=9
Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: tls
[tls_server.c:184]: tls_complete_init(): Using TLS domain TLSs<default>
Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: tls
[tls_domain.c:700]: sr_ssl_ctx_info_callback(): SSL handshake started
Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
[tcp_main.c:2516]: tcpconn_do_send(): tcp_send: sending...
Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
[tcp_main.c:2550]: tcpconn_do_send(): tcp_send: after real write: c=
0x7f90f2438f80 n=1468 fd=9
Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
[tcp_main.c:2551]: tcpconn_do_send(): tcp_send: buf=
Apr 15 11:11:41 vps793907 kamailio[23122]: #026#003#003
Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
[io_wait.h:388]: io_watch_add(): DBG: io_watch_add(0x9c1700, 9, 2,
0x7f90f2438f80), fd_no=1
Apr 15 11:11:42 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
[tcp_read.c:296]: tcp_read_data(): EOF on 0x7f90f2438f80, FD 9
Apr 15 11:11:42 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
[tcp_read.c:1291]: tcp_read_req(): tcp_read_req: EOF
Apr 15 11:11:42 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
[io_wait.h:610]: io_watch_del(): DBG: io_watch_del (0x9c1700, 9, -1, 0x10)
fd_no=2 called
Apr 15 11:11:42 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
[tcp_read.c:1434]: release_tcpconn(): releasing con 0x7f90f2438f80, state
-1, fd=9, id=30
Apr 15 11:11:42 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
[tcp_read.c:1435]: release_tcpconn():  extra_data 0x7f90f2432b40
Apr 15 11:11:42 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
[tcp_main.c:3331]: handle_tcp_child(): handle_tcp_child: reader response=
7f90f2438f80, -1 from 1
Apr 15 11:11:42 vps793907 kamailio[23122]: 13(23167) DEBUG: tls
[tls_server.c:604]: tls_h_close(): Closing SSL connection 0x7f90f2432b40

I don't see any different.

I know that the module is loaded because I see:

exec: *** cfgtrace:request_route=[DEFAULT_ROUTE]
c=[/etc/kamailio/kamailio.cfg] l=486 a=5 n=route

When I restart kamailio, but when I "launch" a call from Teams to my
Kamailio I only see that.

To configure it, I follow https://skalatan.de/en/blog/kamailio-sbc-teams..
But I cannot make it works..

Any more thing that i can test or do??

Thanks

El jue., 16 abr. 2020 a las 14:20, Nasida Yuriy (<nasida at live.ru>) escribió:

> Wow, so many people want to configure kamailio with MS. First of all i
> think you need to get sip debug  between kamailio and MS. Kamilio has
> module to save sip traces. This way you will get sip debug decrypted.
>
>
> ------------------------------
> *От:* sr-users <sr-users-bounces at lists.kamailio.org> от имени sip user <
> sipuser404 at gmail.com>
> *Отправлено:* 16 апреля 2020 г. 10:19
> *Кому:* sr-users at lists.kamailio.org <sr-users at lists.kamailio.org>
> *Тема:* [SR-Users] Kamailio like SBC with Teams
>
> Hello good morning ... I am new to this list and I was starting to mess
> with Kamailio, mainly to set it up as SBC against Teams, in this case.
>
> But I can't get it to work for me. If I launch a call from the Teams, in
> the Kamailio I see:
>
> 1.- In syslog:
>
> Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
> [ip_addr.c:243]: print_ip(): tcpconn_new: new tcp connection: 52.114.7.24
> Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
> [tcp_main.c:1073]: tcpconn_new(): tcpconn_new: on port 4160, type 3
> Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
> [tcp_main.c:1382]: tcpconn_add(): tcpconn_add: hashes: 171:1857:1187, 30
> Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
> [io_wait.h:388]: io_watch_add(): DBG: io_watch_add(0xa1f240, 23, 2,
> 0x7f90f2438f80), fd_no=17
> Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
> [io_wait.h:610]: io_watch_del(): DBG: io_watch_del (0xa1f240, 23, -1, 0x0)
> fd_no=18 called
> Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
> [tcp_main.c:4219]: handle_tcpconn_ev(): tcp: DBG: sending to child, events 1
> Apr 15 11:11:41 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
> [tcp_main.c:3902]: send2child(): selected tcp worker 1 10(23159) for
> activity on [tls:SBC_IP:5061], 0x7f90f2438f80
> Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
> [tcp_read.c:1507]: handle_io(): received n=8 con=0x7f90f2438f80, fd=9
> Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: tls
> [tls_server.c:184]: tls_complete_init(): Using TLS domain TLSs<default>
> Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: tls
> [tls_domain.c:700]: sr_ssl_ctx_info_callback(): SSL handshake started
> Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
> [tcp_main.c:2516]: tcpconn_do_send(): tcp_send: sending...
> Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
> [tcp_main.c:2550]: tcpconn_do_send(): tcp_send: after real write: c=
> 0x7f90f2438f80 n=1468 fd=9
> Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
> [tcp_main.c:2551]: tcpconn_do_send(): tcp_send: buf=
> Apr 15 11:11:41 vps793907 kamailio[23122]: #026#003#003
> Apr 15 11:11:41 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
> [io_wait.h:388]: io_watch_add(): DBG: io_watch_add(0x9c1700, 9, 2,
> 0x7f90f2438f80), fd_no=1
> Apr 15 11:11:42 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
> [tcp_read.c:296]: tcp_read_data(): EOF on 0x7f90f2438f80, FD 9
> Apr 15 11:11:42 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
> [tcp_read.c:1291]: tcp_read_req(): tcp_read_req: EOF
> Apr 15 11:11:42 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
> [io_wait.h:610]: io_watch_del(): DBG: io_watch_del (0x9c1700, 9, -1, 0x10)
> fd_no=2 called
> Apr 15 11:11:42 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
> [tcp_read.c:1434]: release_tcpconn(): releasing con 0x7f90f2438f80, state
> -1, fd=9, id=30
> Apr 15 11:11:42 vps793907 kamailio[23122]: 10(23159) DEBUG: <core>
> [tcp_read.c:1435]: release_tcpconn():  extra_data 0x7f90f2432b40
> Apr 15 11:11:42 vps793907 kamailio[23122]: 13(23167) DEBUG: <core>
> [tcp_main.c:3331]: handle_tcp_child(): handle_tcp_child: reader response=
> 7f90f2438f80, -1 from 1
> Apr 15 11:11:42 vps793907 kamailio[23122]: 13(23167) DEBUG: tls
> [tls_server.c:604]: tls_h_close(): Closing SSL connection 0x7f90f2432b40
>
> 2.- With TCPDUMP:
>
> 11:13:09.311797 IP SBC_IP .1024 > SBC_IP .eu.sip-tls: Flags [S], seq
> 261244614, win 64240, options [mss 1440,nop,wscale 8,nop,nop,sackOK],
> length 0
> 11:13:09.311898 IP  SBC_IP .eu.sip-tls > 52.114.76.76.1024: Flags [S.],
> seq 812357247, ack 261244615, win 29200, options [mss
> 1460,nop,nop,sackOK,nop,wscale 7], length 0
> 11:13:09.340358 IP 52.114.76.76.1024 >  SBC_IP .eu.sip-tls: Flags [.], ack
> 1, win 2053, length 0
> 11:13:09.340560 IP 52.114.76.76.1024 > SBC_IP .eu.sip-tls: Flags [P.], seq
> 1:187, ack 1, win 2053, length 186
> 11:13:09.340578 IP SBC_IP .eu.sip-tls > 52.114.76.76.1024: Flags [.], ack
> 187, win 237, length 0
> 11:13:09.341361 IP SBC_IP .eu.sip-tls > 52.114.76.76.1024: Flags [P.], seq
> 1:1469, ack 187, win 237, length 1468
> 11:13:09.369606 IP 52.114.76.76.1024 > SBC_IP .eu.sip-tls: Flags [.], ack
> 1469, win 2053, length 0
> 11:13:12.451498 IP 52.114.7.24.1216 > SBC_IP .eu.sip-tls: Flags [S], seq
> 309084204, win 64240, options [mss 1440,nop,wscale 8,nop,nop,sackOK],
> length 0
> 11:13:12.451587 IP SBC_IP .eu.sip-tls > 52.114.7.24.1216: Flags [S.], seq
> 3275066862, ack 309084205, win 29200, options [mss
> 1460,nop,nop,sackOK,nop,wscale 7], length 0
> 11:13:12.707119 IP 52.114.7.24.1216 > SBC_IP .eu.sip-tls: Flags [.], ack
> 1, win 2053, length 0
> 11:13:12.707311 IP 52.114.7.24.1216 > SBC_IP .eu.sip-tls: Flags [P.], seq
> 1:187, ack 1, win 2053, length 186
> 11:13:12.707345 IP SBC_IP .eu.sip-tls > 52.114.7.24.1216: Flags [.], ack
> 187, win 237, length 0
> 11:13:12.708273 IP SBC_IP .eu.sip-tls > 52.114.7.24.1216: Flags [P.], seq
> 1:1469, ack 187, win 237, length 1468
> 11:13:12.965101 IP 52.114.7.24.1216 > SBC_IP .eu.sip-tls: Flags [.], ack
> 1469, win 2053, length 0
> 11:13:12.965156 IP 52.114.7.24.1216 > SBC_IP .eu.sip-tls: Flags [F.], seq
> 187, ack 1469, win 2053, length 0
> 11:13:12.965688 IP SBC_IP .eu.sip-tls > 52.114.7.24.1216: Flags [F.], seq
> 1469, ack 188, win 237, length 0
> 11:13:13.220871 IP 52.114.7.24.1216 > SBC_IP .eu.sip-tls: Flags [.], ack
> 1470, win 2053, length 0
>
> I can't "receive" anything.
>
> I have generated the certificates and configured in the tls.cfg of the
> Kamailio:
>
> [server:default]
> method = TLSv1.2
> verify_certificate = no
> require_certificate = no
> private_key = /etc/letsencrypt/ssl/cert.key
> certificate = /etc/letsencrypt/ssl/cert.crt
> ca_list = /etc/letsencrypt/ssl/ca.crt
>
> Within Kamailio itself I have it configured to return a 200 KeepAlive to
> Teams when it receives an OPTIONS:
>
> event_route[tm:local-request] {
>
>         if(is_method("OPTIONS") && $ru =~ "pstnhub.microsoft.com") {
>                append_hf("Contact: <sip: SBC_DNS
> :5061;transport=tls>\r\n");
>         }
>         xlog("L_INFO", "Sent out tm request: $mb\n");
> }
>
> And I have measured the record_route for this new one:
>
> record_route_preset(" SBC_DNS :5061;transport=tls", " SBC_IP :5061");
>
> I have created a dispatcher.list:
>
> # setid(integer) destination(sip uri) flags (integer, optional),
> priority(int,opt), attrs (str,optional)
> 1:1:sip:sip.pstnhub.microsoft.com;transport=tls 0 3 socket=tls: SBC_IP
> :5061;ping_from= sip:SBC_DNS
> 2:1:sip:sip2.pstnhub.microsoft.com;transport=tls 0 2 socket=tls: SBC_IP
> :5061;ping_from=sip: SBC_DNS
> 3:1:sip:sip3.pstnhub.microsoft.com;transport=tls 0 1 socket=tls: SBC_IP
> :5061;ping_from=sip: SBC_DNS
> 4:1:sip:sip-all.pstnhub.microsoft.com;transport=tls 0 1 socket=tls:
> SBC_IP :5061;ping_from=sip: SBC_DNS
>
> I think that one of the problems is that I do not send the OPTIONS to the
> Teams well, since it is on their panel, it indicates that the SBC is
> INACTIVE.
>
> I don't know if you could help me straighten this out a bit ...
>
> Thank you so much for everything..
>
> a greeting
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users at lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
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