[OpenSIPS-Users] How to recover from tcp_blocking_connect failed ?

[Răzvan Crainea]

Hi, Rodrigo!

Make sure you are calling the fix_nated_contact() function on 200 OK, 
otherwise OpenSIPS might try to send the ACK to whatever bogus IP the 
client sets in the Contact header.

Best regards,

Răzvan Crainea
OpenSIPS Developer
www.opensips-solutions.com

On 10/05/2017 03:12 PM, Rodrigo Pimenta Carvalho wrote:
>
> Dear OpenSIPS users,
>
>
> According to the OpenSIPS log, a callee answered a caller with SIP OK.
>
> Such SIP OK has the following contact:
>
>
>                   Contact: "Group" 
> <sip:g1r2u3p4o5 at 127.0.0.1:40348;transport=TLS;ob>;+sip.ice
>
>
> However, it seems that there is no available connection to port 40348. 
> That is, opensips cann't send any message to that port.
>
> So, after opensips relaying a SIP ACK to g1r2u3p4o5, it caused the 
> following error:
>
>
> Jan 09 17:48:54 colibri-imx6 opensips[23115]: Jan  9 17:48:54 [23135] 
> INFO:core:probe_max_sock_buff: using snd buffer of 320 kb
> Jan 09 17:48:54 colibri-imx6 opensips[23115]: Jan  9 17:48:54 [23135] 
> INFO:core:init_sock_keepalive: TCP keepalive enabled on socket 22
> Jan 09 17:48:54 colibri-imx6 opensips[23115]: Jan  9 17:48:54 [23135] 
> ERROR:core:tcp_connect_blocking: poll error: flags 28 - 4 8 16 32
> Jan 09 17:48:55 colibri-imx6 opensips[23115]: Jan  9 17:48:54 [23135] 
> ERROR:core:tcp_connect_blocking: failed to retrieve SO_ERROR 
> [server=127.0.0.1:40348] (111) Connection refused
> Jan 09 17:48:55 colibri-imx6 opensips[23115]: Jan  9 17:48:54 [23135] 
> ERROR:proto_tls:tls_sync_connect: tcp_blocking_connect failed
> Jan 09 17:48:55 colibri-imx6 opensips[23115]: Jan  9 17:48:54 [23135] 
> ERROR:proto_tls:proto_tls_send: connect failed
> Jan 09 17:48:55 colibri-imx6 opensips[23115]: Jan  9 17:48:54 [23135] 
> ERROR:core:msg_send: send() for proto 3 failed
>
>
> What is happening here?
>
> How can a peer lost its connection or lost connect to opensips?
>
> How to avoid this issue or recover from it?
>
>
> I have no idea on what to do. Any hint will be very helpful!
>
>
> Thanks a lot.
>
>
>
> RODRIGO PIMENTA CARVALHO
> Inatel Competence Center
> Software
> Ph: +55 35 3471 9200 RAMAL 979
>
>
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> Users at lists.opensips.org
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