[OpenSIPS-Users] Max Forward Header Function

[Faisal Rehman]

Hi Vlad,

Exactly I have seen the value being decremented to 1 while live testing.
 
Thanks for your help!!

Faisal Rehman


________________________________
 From: Vlad Paiu <vladpaiu at opensips.org>
To: users at lists.opensips.org 
Sent: Friday, January 27, 2012 3:56 PM
Subject: Re: [OpenSIPS-Users] Max Forward Header Function
 

 
Hi,

The parameter to mf_process_maxfwd_header will only be added to the
    message if the message did not initially contain a Max-Forwards
    header.
If the header exists, the default behavior is to decrement the
    header value by one. Please check again the readme for the function.

[1]
    http://www.opensips.org/html/docs/modules/1.7.x/maxfwd.html#id249099

Regards,
Vlad

Vlad Paiu
OpenSIPS Developer
On 01/26/2012 03:05 PM, Faisal Rehman wrote: 
Hi Vlad,
>
>
>Okay I got the functionality of"!" symbol & also got different return codes while testing on a local server. But I am stuck with one thing that I am getting this in the wireshark logs either the max_valuefor the mf_process_maxfwd_headeris 1 or 10:
>
>
>564d700c00f837-1--d87543-;rport..Max-Forwards: 70..Cont
>  act: <sip:1000 at 192.168.150.23:16222>..To: "3333"<sip:3333 at 192.168.150.160:5161>..From: "testing"<sip:1000 at 192.168.150.160:5161>;tag=3421ec3e..Call-ID: ba600752f22e
>  9018ZjQ0MGViNzJlZTE5OTY2M2NkZjE3MWY1Nzk5ODVlNGI...CSeq: 1 INVITE..Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
>
>I know that 70 is the recommended Max Forwards initial value but will it be the same either we use max_value 1 or 10?
>
>
>
>Regards,
>
>
>Faisal Rehman
>
> 
>________________________________
> From: Vlad Paiu <vladpaiu at opensips.org>
>To: users at lists.opensips.org 
>Sent: Wednesday, January 25, 2012 7:16 PM
>Subject: Re: [OpenSIPS-Users] Max Forward Header Function
> 
>
> 
>Hi,
>
>The '!' symbol has the same meaning as in any other
                programming language, to negate the return code of the
                function.
>
>So if you look at the return code of the
                mf_process_maxfwd_header at [1], you will see it returns
                a positive return code when the processing of the
                Max-Forward header succeeds, and a negative return code
                if the Max-Forward value is 0 or if there was another
                failure. 
>
>[1] http://www.opensips.org/html/docs/modules/1.7.x/maxfwd.html#id249099
>
>Regards,
>
>Vlad Paiu
OpenSIPS Developer
>On 01/25/2012 02:44 PM, Faisal Rehman wrote: 
>Hi Everybody,
>>
>>
>>I have a very tiny & crazy question but it is confusing me & I couldn't find its accurate answer over google that why we use "!"this before mf_process_maxfwd_header function in the main routing block. I have also seen this symbol with other functions like!is_method("REGISTER|MESSAGE") so what's its soul purpose?
>>
>>
>>How can I test the functionality of just the mf_process_maxfwd_headerfunction?
>>
>>
>> 
>>Regards,
>>
>>
>>Faisal Rehman
>>
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