[OpenSIPS-Users] UDP send failed

[Bogdan-Andrei Iancu]

Hi Jorge,

The error generated by udp_send usually translates into a local iptables 
blocking the destination or source IP of that message. Maybe the 
re-INVITE gets some wrong IPs in the RURI (when routed via OpenSIPS). 
You can simply check where OpenSIPS will try to route the re-INVITE by 
adding after the loose_route() :
     xlog("after loose route ru=<$ru>, du=<$du>\n");

Check if the du or ru do point to something impossible to route to.

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   http://www.opensips-solutions.com
OpenSIPS Summit 2018
   http://www.opensips.org/events/Summit-2018Amsterdam

On 03/27/2018 07:25 PM, Jorge Luis Ortea wrote:
> Hi all,
>
> I have a OpenSIPS between SBC and Asterisk PBX. This SIP Proxy relay 
> outbound calls from PBX to SBC.
>
> Some calls when it is answered SIP Proxy receives from SBC a REINVITE 
> or INVITE in-dialog, sometimes those REINVITES make fail SIP Proxy and 
> it doesn't relay.
>
> - In log:
>
> ERROR: core: udp_send: sendto (sock, 0xb5ec5464,938,0,0xb5f4950c, 16): 
> Operation not permitted (1)
> ERROR: tm: msg_send: udp_send failed
> ERROR: tm: t_forward_nonack: sending request failed
>
>
> - In pcap I can see that SIP Proxy does not relay REINVITE and it 
> returns "477 Send failed (477 / TM)"
>
>
> I have checked REINVITE SIP traces OK and KO but i can not see any 
> different.
>
>
> What could be the problem?
>
> Thanks
> Regards.
>
>
>
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