[SR-Users] ACK sent to wrong socket IP in mhomed scenario

[Daniel-Constantin Mierla]

Perhaps you should set force send socket before loose_route(), so it 
will update it if needed.

Daniel

On 12/12/13 22:20, Ronald Voermans wrote:
> Daniel,
>
> Thank you for your answer. Configured the following (with mhomed=yes):
>
> if ($(route_uri{uri.host}) == VIP_PROXY) {
> force_send_socket(VIP_PROXY);
> } else if ($(route_uri{uri.host}) == VIP_PROXY_PUB) {
> force_send_socket(VIP_PROXY_PUB);
> } else if ($(route_uri{uri.host}) == THIS_PROXY) {
> force_send_socket(THIS_PROXY);
> } else if ($(route_uri{uri.host}) == THIS_PROXY_PUB) {
> force_send_socket(THIS_PROXY_PUB);
> }
> t_relay();
> ...
>
> This solves the issue when using the VIP_PROXY(_PUB). However, the ACK 
> always has two route headers when using the THIS_PROXY as ip address. 
> In this case, the top route header is VIP_PROXY; the second one is 
> THIS_PROXY. Hence, the solution above doesn't work, because the 
> force_send_socket uses the top route header (which is VIP_PROXY).
>
> Why is this different behavior when compared to mhomed=no?
>
> Thanks,
>
> Ronald
>> Dear list,
>>
>> I'm having an issue with our Kamailio setup.
>>
>> I've installed two Kamailio servers with Corosync/Pacemaker. 
>> Kamailio1 has ip 10.254.254.5, Kamailio2 has ip 10.254.254.23. The 
>> VIP is 10.254.254.1. All is working well; clients can sent request to 
>> the VIP, and all traffic is sent via 10.254.254.1, and not the real 
>> ipI've configured the listen addressess:
>>
>> mhomed = no
>> listen = udp:10.254.254.1:5060
>> listen = udp:10.254.254.23:5060
>>
>> I'm now trying to configure the server as a multihomed one. Both 
>> Kamailio have two NIC's. Kamailio1 also has ip X1, Kamailio2 has ip 
>> X2. The VIP is Y. Configuration is done as:
>>
>> mhomed = yes
>> listen = udp:10.254.254.1:5060
>> listen = udp:10.254.254.23:5060
>> listen = udp:Y:5060
>> listen = udp:X1:5060
>>
>> When a UA sends an INVITE to for example 10.254.254.1, all responses 
>> (back) to UA are being sent with source address 10.254.254.1 (VIP), 
>> except for the ACK (and BYE). The ACK is sent via the real ip 
>> 10.254.254.23. I can resolve this by issuing a force_send_socket 
>> before t_relay in the config; but since it's multihomed, I have to 
>> build a lot of checks to find out the outgoing socket. Besides that, 
>> I want it to be possible to use both the real IP and the VIP as 
>> IP-address for the UA (for testing purposes). This won't work with 
>> force_send_socket.
>>
>> Does anyone from the list know how I can solve this?
>>
>> Thanks,
>>
>> Regards,
>>
>> Ronald
>
>
>
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

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