Re: Why are the header classes final?

Well, Asterisk seems to have a bug. The quotes should not matter.  I can 
see no good reason for not making the class final. However, there is 
also no good reason to make that class final so I  just remove the final 
keyword. :-)

Its quite simple you see...


Ranga

[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
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-- 
M. Ranganathan 

Advanced Networking Technologies Division,
National Institute of Standards and Technology (NIST),
100 Bureau Drive, Stop 8920, Gaithersburg, MD 20899. 
tel:301 975 3664 , fax:301 590 0932 http://w3.antd.nist.gov/
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