HI ,
The softphone is doing nothing wrong in putting User-Agent header since it is
a general header which is part of the RFC. May be some problem with the
parser of the SIP stack which you are using. Just check out with the vendor
of the stack.
thanks & regds
shashidhara
MindTree Consulting Pvt Ltd
Bangalore

-----Original Message-----
From: Martin Préfontaine [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 27, 2001 2:19 AM
To: '[EMAIL PROTECTED]'
Subject: [Sip-implementors] (no subject)


Hi everybody,

I'm developping a Proxy server using a 3rd party SIP stack.

I have been testing it using a SIP SoftPhone.

When sending requests the Softphone always add the User-Agent header with
its product name inside.

The problem arise when it is sending a response. Iit also include the
User-Agent header.  The Stack I am using doesn't
like it and returns an invalid parameter error when parsing this response. 

I'd like to know if the softphone is violating the protocol by inserting the
User-Agent header in a response or is the 
SIP Stack overreacting?

Thanks

Martin Préfontaine
Software Engineer

Interstar Technologies Inc.
5835 Verdun Avenue, 3rd Floor
Montréal, Québec
Canada H4H 1M1

Tel.: 1 (514) 766-1668 (4457) (EST)
Fax: 1 (514) 766-1439
Email: [EMAIL PROTECTED]
Web: http://www.faxserver.com


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