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XHTML Content Negotiation revisited


From: James Pickering
Date: Aug 17, 2005 10:40AM

(update with re-formulated PHP)

The W3C Tutorial relating to content negotiation http://www.w3.org/2003/01/xhtml-mimetype/content-negotiation mostly relates to Apache. I am working on content-negotiation for my Zeus/3.4 Server. My interim goal is to serve XHTML 1.0 documents as Content-Type application/xhtml+xml -- with XML declaration -- to Firefox browsers and as text/html-- without XML declaration (in order to render in "standards" mode) -- to MSIE browsers.

I have constructed a test page http://www.jp29.org/indexbak.php (a replication of my de facto Home page http://www.jp29.org/ which is served as html 4.01) that I am attempting to serve as application/xhtml+xml in my Firefox 1.0.6 browser and as Content-Type: text/html in my MSIE 6.0 browser.

Checks of my test page served as XHTML 1.0 (strict) Content-Type application/xhtml+xml -- with XML declaration -- in my Firefox 1.0.6 browser:

Firefox Tools/Web Developer/Information/Vew Page Information/View Response Headers

W3C Validator in Verbose mode -- http://validator.w3.org/check?verbose=1&;uri=http%3A//www.jp29.org/indexbak.php

Web Caching -- http://www.web-caching.com/showheaders.html

(Added: O'Reilly RUWF facility at http://www.xml.com/pub/a/tools/ruwf/check.html -- for XML being "well formed").

The test page renders as XHTML 1.0 (strict) Content-Type text/html -- without XML declaration -- for me in my MSIE 6.0 browser.

I solicit comments on the validity of my exercise -- and comments in general.

James Pickering