[OpenSIPS-Users] Opensips relaying MESSAGE - source IP problem

[Sebastien CRUAUX]

I'm getting the same problem with RTP packets... Maybe some issue with 
rtpproxy bridging mode ?



Le 05/11/2010 11:21, Vallimamod ABDULLAH a écrit :
> Hi,
>
> Have a look at force_send_socket (http://www.opensips.org/Resources/DocsCoreFcn#toc103)
>
> Regards,
> - vma
> .
>
> On Nov 5, 2010, at 11:10 AM, Sebastien CRUAUX wrote:
>
>> Hi,
>>
>> I'm encountering some issue with my Opensips configuration.
>> My Opensips server is configured to relay SIP MESSAGE requests to
>> another server when the destination URI is not located on my server.
>> Here is the part of opensips.cfg which is concerned :
>>
>> if (!lookup("location","m")) {
>>
>>    switch ($retcode) {
>>      case -1:
>>      case -3:
>>        rewritehost("10.254.230.148");
>>        if (is_method("MESSAGE")) {
>>      rewriteport("5062");
>>        }
>>        if (!t_relay()) {
>>      sl_reply_error();
>>        } exit;
>>      case -2:
>>        sl_send_reply("405", "Method Not Allowed");
>>        exit;
>>    }
>> }
>>
>> My server receives SIP requests on eth0 interface (IP 10.254.31.45) but
>> when it relays the requests to the server 10.254.230.148 it should use
>> eth2 IP (10.254.28.45) as src IP because there is a firewall between the
>> two servers and port 5062 is only allowed for source IP 10.254.28.45.
>> The problem is the following : when I open Wireshark on my Opensips
>> server, I can see that the source IP for the relayed MESSAGE is still
>> 10.254.31.45 so it never reaches the other server ! I don't understand
>> where is the issue, my Linux routing table is OK, when I'm trying to
>> reach 10.254.230.148 from my Opensips server using telnet for example it
>> uses the right interface and the right gateway. Here is my routing table :
>>
>> 10.254.230.144 10.254.28.1 255.255.255.240 UG 0 0 0 eth2
>> 10.254.31.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
>> 10.254.28.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
>> 10.254.29.0 0.0.0.0 255.255.255.0 U 0 0 0 eth3
>> 192.168.0.0 10.254.28.1 255.255.255.0 UG 0 0 0 eth2
>> 10.254.225.0 10.254.28.1 255.255.255.0 UG 0 0 0 eth2
>> 0.0.0.0 10.254.31.1 0.0.0.0 UG 0 0 0 eth0
>>
>> Did I miss something in Opensips configuration file ?
>> Thanks a lot for your help.
>>
>> Best Regards,
>>
>> Sebastien
>>
>>
>>
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>
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