[Freeswitch-users] Internal IP showing in SDP

Matt Broad matt at inveroak.com
Wed Aug 20 14:59:35 MSD 2014


Hi Brian,

it seems that this was not the issue.

Some more details:
We have an opensips server using the load_balancer module to route the 
calls to the freeswitch box. 
(https://wiki.freeswitch.org/wiki/Enterprise_deployment_OpenSIPS)
When I route the calls directly to the freeswitch's external IP, the 
calls connect fine and have audio.
However when I route the calls to the opensips server first, the call 
will connect but without audio.

The strange thing is Opensips uses Freeswitch's internal address (from 
the load_balancer table) to forward the INVITE packet, yet when the ACK 
packet comes in from the provider opensips tries to forward it to the FS 
external IP address rather than the internal IP.

I understand this is probably more an opensips question, so will 
understand if I should post this to their mailing list, but any tips 
would be appreciated.


thanks
Matt


On 19/08/2014 17:25, Matt Broad wrote:
> thanks brian, will give it a go and see what happens.
>
> thanks
> Matt
> On 19/08/2014 17:06, Brian West wrote:
>> Can you try prefixing the ext-rtp-ip and ext-sip-ip with 
>> autonat:0.0.0.0  and make sure local-network-acl is set to rfc1918.auto?
>>
>>
>> On Tue, Aug 19, 2014 at 9:20 AM, Matt Broad <matt at inveroak.com 
>> <mailto:matt at inveroak.com>> wrote:
>>
>>     Hi,
>>
>>     does it make any difference if my internal IP address is being
>>     sent in
>>     the SDP connection information?  I have 2 sip providers where 1 I can
>>     bridge calls and receive audio and 1 that I can bridge calls but
>>     get no
>>     audio.
>>
>>     Even with the below settings the SDP message body contains c=IN IP4
>>     192.168.1.1.
>>
>>     I have vars set as:
>>     <X-PRE-PROCESS cmd="set" data="external_rtp_ip=my.ip.goes.here"/>
>>     <X-PRE-PROCESS cmd="set" data="external_sip_ip=my.ip.goes.here"/>
>>
>>     I have setup the external profile as follows:
>>     <param name="ext-rtp-ip" value="$${external_rtp_ip}"/>
>>     <param name="ext-sip-ip" value="$${external_sip_ip}"/>
>>
>>     running sofia status profile external gives (replace 0.0.0.0 with the
>>     real external IP declared in vars):
>>     =================================================================================================
>>     Name                    external
>>     Domain Name             N/A
>>     Auto-NAT                false
>>     DBName                  sofia_reg_external
>>     Pres Hosts
>>     Dialplan                XML
>>     Context                 public
>>     Challenge Realm         auto_to
>>     RTP-IP                  192.168.1.1
>>     Ext-RTP-IP              0.0.0.0
>>     SIP-IP                  192.168.1.1
>>     Ext-SIP-IP              0.0.0.0
>>     URL sip:mod_sofia at 0.0.0.0:5080 <http://sip:mod_sofia@0.0.0.0:5080>
>>     BIND-URL
>>     sip:mod_sofia at 0.0.0.0:5080;maddr=192.168.1.1;transport=udp,tcp
>>     WS-BIND-URL sip:mod_sofia at 192.168.1.1:5086;transport=ws
>>     HOLD-MUSIC              local_stream://moh
>>     OUTBOUND-PROXY          N/A
>>     CODECS IN               G722,PCMU,PCMA,GSM
>>     CODECS OUT              PCMU,PCMA,GSM
>>     TEL-EVENT               101
>>     DTMF-MODE               rfc2833
>>     CNG                     13
>>     SESSION-TO              0
>>     MAX-DIALOG              0
>>     NOMEDIA                 false
>>     LATE-NEG                true
>>     PROXY-MEDIA             false
>>     ZRTP-PASSTHRU           true
>>     AGGRESSIVENAT           false
>>     CALLS-IN                8
>>     FAILED-CALLS-IN         1
>>     CALLS-OUT               8
>>     FAILED-CALLS-OUT        1
>>     REGISTRATIONS           0
>>
>>
>>
>>
>>     thanks
>>     Matt
>>
>>
>>     _________________________________________________________________________
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>>
>>
>>
>> -- 
>>
>> */Brian West/*
>> brian at freeswitch.org <mailto:brian at freeswitch.org>
>>
>>
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>>
>>
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>
>
>
> _________________________________________________________________________
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>
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