[Serdev] Ser Coding Problem

[Broch, Andreas]

Dear Developers,

 

We have the following Problem:

 

We like to implement a stateful forwarding for all Messages after
REGISTER ( in our testbed especially INVITE;BYE and other mandatory
messages ).

 

For that Purpose, we are adding a Path Header in the REGISTER
Request/Message.

 

We need the S-CSCF to save all necessary Values to create the Path
Vector , and save it to the Ser database.

Then the S-CSCF should insert ,Path, supported, Contact and the To
Header from Register ( as For ) to the 200 OK Response after successful
authorization.

 

The S-CSCF generate the 200 OK Response automatically with
save(location);

 

We are actually using Ser 0.8.14.

 

My most important questions at the Moment are:

 

->How, can we add the Headers to the Response , BEFORE the message is
forwarded to the I-CSCF

 

We tried to implement the header adding on two different ways, but both
didn't work

1.	) we insert a if(status=~200) after save(location) directly
2.	) t_on_reply( ) after save location, and onreply_route outside
the main route block.

 

      In both solution the ser didn't enter the part were the headers
should be added.

-> What options do we have to save the Path Header value to database

- Can we use the exec( ) function for that purpose ?

- Is it also possible to implement SQL Commands directly, or are there
predefined functions to save non-standard Header ?

 

-> Are there any Functions / Modules to access the Message Header( also
the non standard Header ) through Variables 

    directly ?

 

-> Are there any additional Modules or Functions in ser_0_9_0 which can
support/help us to solve these problems

 

Best Regards

Andreas Broch

 

FTW( = Research Lab for Telecommunication Vienna )

 

 

 

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