Re: Why are the header classes final?

You could try using headerfactory.createHeader( "Contact", "Transfer 
<uri>" ). There is a chance that it does not change the format of what you 
put in

Regards,
Jeroen

[email protected] wrote:
> On Wed, 8 Nov 2006 at 20:53, Jeroen van Bemmel wrote:
>> They are not all final, but in any case the public interfaces of
>> this library are in javax.sip (and javax.sdp). The design is such
>> that an application would only deal with those packages.
>
> So why is gov.nist.javax.sip.header.Contact final if not all the
> headers are?  Like I said, I'm new to Java so I don't know the
> motivations for using final.
>
>> Which need do you have that it cannot be done using the public API?
>
> Well, we're trying to send a Response.MOVED_TEMPORARILY to Asterix
> boxes, and we were told on the Asterix mailing list that Asterix
> wouldn't recognize it unless the form of the Contact header
> in the response was:
>
>     Contact: Transfer <uri>
>
> I tried just using Transfer as the DisplayName, but that produces:
>
>     Contact: "Transfer" <uri>
>
> and that doesn't seem to be good enough.  Now, I'm not personally
> convinced that even getting rid of the quotes is going to fix the
> problem with Asterix, but I need to run the experiment.  So I was
> going to subclass Contact and change the toString so that there
> were no quotes around Transfer, and use my custom header in
> constructing the response.
>
> --David