[SR-Users] Outgoing SIP/TLS connection error (msg_send_buffer(): tcp_send failed)

[Denys Pozniak]

Thanks!!!
Yeah, *set_forward_no_connect()* was in the script ...

чт, 8 дек. 2022 г. в 12:23, Daniel-Constantin Mierla <miconda at gmail.com>:

> Hello,
>
> check to see if the set_forward_no_connect() is used.
>
> Cheers,
> Daniel
> On 08.12.22 10:28, Denys Pozniak wrote:
>
> Hello!
>
> We use trunk with Twilio through a SIP/TLS.
> They establish incoming calls from random ports, like:
> (Twilio)3.3.3.3:54321 --> (Kamailio)2.2.2.2:5061
>
> In case of sending in-dialog requests to them, Kamailio should establish
> an outgoing connection to the dst port 5061 (as per Route), like:
> (Kamailio)2.2.2.2 --> (Twilio)3.3.3.3:5061
>
> But as per tcpdump traces and logs, Kamailio does not even try to
> establish an outgoing connection to Twilio.
> There should be no problems with routes and the network on that server, as
> regular telnet to Twilio shows that 5061 is open.
>
> What could be the reason and how to debug?
>
> *Script:*
> onsend_route {
>         xlog("L_ERR","[$cfg(route)]*RELAY ONSEND* $rm / $du / $fs / $fsn /
> [$ci]\n");
> }
>
> *Syslog:*
> DEBUG <core> [core/resolve.c:1259]: srv_sip_resolvehost(): 3.3.3.3:5061
> proto=3
> DEBUG <core> [core/resolve.c:1371]: srv_sip_resolvehost(): returning
> 0x55acd63a63c0 (3.3.3.3:5061 proto=3)
> ERROR <script>: [DEFAULT_SEND]*RELAY ONSEND* REFER /
> sip:3.3.3.3:5061;transport=tls / tls:10.1.1.1:5061 / sip_wan_tls / [123]
> DEBUG tm [../../core/forward.h:277]: msg_send_buffer(): sending to:
> 3.3.3.3:5061, force_socket=4, send_sock=0x7f090049b8e8
> DEBUG tm [../../core/forward.h:292]: msg_send_buffer(): tcp_send failed
> DEBUG tm [t_fwd.c:1568]: t_send_branch(): send to 3.3.3.3:5061 (3) failed
> WARNING: tm [t_fwd.c:1588]: t_send_branch(): sending request on branch 0
> failed
> DEBUG tm [t_funcs.c:335]: t_relay_to(): t_forward_nonack returned error -1
> (-477)
> DEBUG tm [t_funcs.c:353]: t_relay_to(): -477 error reply generation delayed
> DEBUG sl [sl_funcs.c:558]: sl_run_callbacks(): execute callback for event
> type 1
>
> *Software:*
> - Kamailio is listening on (+udp, +tcp):
>   tls: 10.1.1.1:5061 name sip_wan_tls advertise 2.2.2.2:5061
>
> - OS is Debian 11.5
>
> - # kamailio -v
>  version: kamailio 5.6.2 (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_BLOCKLIST,
> 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 10.2.1
>
> - # dpkg -l | grep ssl
>  ii  libssl1.1:amd64                     1.1.1n-0+deb11u3
> amd64        Secure Sockets Layer toolkit - shared libraries
>  ii  openssl                             1.1.1n-0+deb11u3
> amd64        Secure Sockets Layer toolkit - cryptographic utility
>
>
> --
>
> BR,
> Denys Pozniak
>
>
>
> __________________________________________________________
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>
> --
> Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda
>
> __________________________________________________________
> Kamailio - Users Mailing List - Non Commercial Discussions
> sr-users at lists.kamailio.org
> Important: keep the mailing list in the recipients, do not reply only to
> the sender!
> Edit mailing list options or unsubscribe:
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>


-- 

BR,
Denys Pozniak
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