[OpenSIPS-Users] Opensips crashes on forward when destination port is unreachable

[Anca Vamanu]

Hi Adam,

Please investigate the core file with gdb. Run 'gdb path_to executable 
path_to_core' and then 'bt' and send the output.

Regards,

-- 
Anca Vamanu
OpenSIPS Developer



On 29/04/11 11:11, Adam Kuśmirek wrote:
> Hi All
>
> I need to implement Stateless Proxy to translate transport from TLS to TCP.
>
> I have simple routing script:
>
>
> route{
>
>   if (!mf_process_maxfwd_header("10")) {
>     sl_send_reply("483","Too Many Hops");
>     exit;
>   }
>
>   if(dst_ip == 10.0.10.11) {
>     log("message received on external interface\n");
>     force_send_socket(tcp:10.0.20.11:5060);
>     forward("tcp:10.0.20.101:5060");
>   };
>
>   if(dst_ip == 10.0.20.11) {
>     log("message received on internal interface\n");
>     force_send_socket(tls:10.0.10.11:5061);
>     forward("tls:10.0.10.101:5061");
>   };
>
> }
>
>
> I'm generating traffic shown on picture below:
>
>
> ----------                       ------------------
>     -----------
> | UAC |<------------->    | SL Proxy  |<------------->    | UAS  |
> ----------        TLS         ------------------        TCP         -----------
>    10.0.10.101      10.0.10.11  10.0.20.11               10.0.20.101
>
> UAC (10.0.10.101) via TLS to external Proxy interface (10.0.10.11)
> FORWARD  via internal Proxy interface (10.0.20.11) TCP to UAS
> (10.0.20.101)
>
> Everything works fine until destination port is unreachable.
>
> When I shutdown UAS (destination port becomes unreachable) Opensips crashes
> and produces log:
>
> Apr 28 08:26:47 hmsa /usr/sbin/opensips[2799]:
> INFO:core:tls_accept:client did not present a certificate
> Apr 28 08:26:47 hmsa /usr/sbin/opensips[2799]:
> ERROR:core:tcp_blocking_connect: poll error: flags 18
> Apr 28 08:26:47 hmsa /usr/sbin/opensips[2799]:
> ERROR:core:tcp_blocking_connect: failed to retrieve SO_ERROR (111)
> Connection refused
> Apr 28 08:26:47 hmsa /usr/sbin/opensips[2799]:
> ERROR:core:tcpconn_connect: tcp_blocking_connect failed
> Apr 28 08:26:47 hmsa /usr/sbin/opensips[2799]: ERROR:core:tcp_send:
> connect failed
> Apr 28 08:26:47 hmsa /usr/sbin/opensips[2799]: ERROR:core:msg_send:
> tcp_send failed
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2803]:
> CRITICAL:core:receive_fd: EOF on 11
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2794]: INFO:core:handle_sigs:
> child process 2799 exited by a signal 11
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2794]: INFO:core:handle_sigs:
> core was generated
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2794]: INFO:core:handle_sigs:
> terminating due to SIGCHLD
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2803]: INFO:core:sig_usr:
> signal 15 received
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2796]: INFO:core:sig_usr:
> signal 15 received
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2802]: INFO:core:sig_usr:
> signal 15 received
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2801]: INFO:core:sig_usr:
> signal 15 received
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2800]: INFO:core:sig_usr:
> signal 15 received
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2798]: INFO:core:sig_usr:
> signal 15 received
> Apr 28 08:26:48 hmsa /usr/sbin/opensips[2797]: INFO:core:sig_usr:
> signal 15 received
>
> I'm using Opensips version 1.6.3 maintained in EPEL repository
>
> [root at hmsa ~]# opensips -V
> version: opensips 1.6.3-tls (i386/linux)
> flags: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, DISABLE_NAGLE,
> USE_MCAST, SHM_MEM, SHM_MMAP, PKG_MALLOC, F_MALLOC,
> FAST_LOCK-ADAPTIVE_WAIT
> ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16,
> MAX_URI_SIZE 1024, BUF_SIZE 65535
> poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
> svnrevision: unknown
> @(#) $Id: main.c 6169 2009-09-22 12:48:37Z bogdan_iancu $
> main.c compiled on 22:39:11 Dec 22 2010 with gcc 4.1.2
>
> I compiled the latest 1.6.4 release and have the same problem.
>
> Is it bug ?
>
> Please help
>
> Regards Adam