Re: [OpenSIPS-Users] How to now if Cflags == NAT ?

[Bogdan-Andrei Iancu]

Hi Rodrigo,

After doing the lookup(location), you can do :
if ( isbflagset("NAT") ) {}

Best regards,

Bogdan-Andrei Iancu
  OpenSIPS Founder and Developer
  http://www.opensips-solutions.com

OpenSIPS Summit May 2017 Amsterdam
  http://www.opensips.org/events/Summit-2017Amsterdam.html

On 04/20/2017 09:37 PM, Rodrigo Pimenta Carvalho wrote:


Dear OpenSIPS users,


Every time a SIP UAC registers in my OpenSIPS, if such agent is behind 
a NAT, the location record receives the NAT flag in the Cflags column. 
My Opensips configuration file is responsible for that.


For example:


AOR:: 1000
Contact:: sip:1000@192.168.21.5:59047;transport=TLS;ob Q=
Expires:: 298
Callid:: ec88647d89564d9b8cf112cb254d0f04
Cseq:: 34066
User-agent:: MicroSIP/3.11.0
Received:: sip::59047;transport=TLS
State:: CS_SYNC
Flags:: 0
Cflags:: NAT   <<===  HERE IS THE NAT FLAG.


Now, if a SIP INVITE arrives in my OpenSIPS, from a UAC that is behind 
a NAT, I need do something like this:


if (Cflags == NAT) {

fix_nated_sdp("10")

};


What is the correct way to investigate if Cflags is equals to NAT ? I 
mean, how to program such check in the script file?



Any hint will be very helpful!


Best regards!



RODRIGO PIMENTA CARVALHO
Inatel Competence Center
Software
Ph: +55 35 3471 9200 RAMAL 979


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[OpenSIPS-Users] How to now if Cflags == NAT ?

[Rodrigo Pimenta Carvalho]

Dear OpenSIPS users,


Every time a SIP UAC registers in my OpenSIPS, if such agent is behind a NAT, 
the location record receives the NAT flag in the Cflags column. My Opensips 
configuration file is responsible for that.

For example:


AOR:: 1000
Contact:: sip:1000@192.168.21.5:59047;transport=TLS;ob Q=
Expires:: 298
Callid:: ec88647d89564d9b8cf112cb254d0f04
Cseq:: 34066
User-agent:: MicroSIP/3.11.0
Received:: sip::59047;transport=TLS
State:: CS_SYNC
Flags:: 0
Cflags:: NAT   <<===  HERE IS THE NAT FLAG.


Now, if a SIP INVITE arrives in my OpenSIPS, from a UAC that is behind a NAT, I 
need do something like this:

if (Cflags == NAT) {

fix_nated_sdp("10")

};


What is the correct way to investigate if Cflags is equals to NAT ? I mean, how 
to program such check in the script file?


Any hint will be very helpful!


Best regards!



RODRIGO PIMENTA CARVALHO
Inatel Competence Center
Software
Ph: +55 35 3471 9200 RAMAL 979
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