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From Lars Huttar <lars_hut...@sil.org>
Subject Re: Mapping favicon
Date Mon, 29 Jan 2007 19:56:40 GMT
On 1/29/2007 12:47 PM, Manuel Mata wrote:
> Hi all.
>
> I want to put a favicon on my application which is
> under "abc" context, so when i write
> "http://localhost:8888/abc/" it put my icon on the
> left of the url if you use Firefox ( i think you know
> what i mean).
>
> I matched it with this code on my sitemap
>
> <!-- favicon -->
> <map:match pattern="favicon.ico">
>   <map:read mime-type="image/x-icon"
> src="include/images/favicon32x32.ico"/>
> </map:match>
>
> but it doesn't work.
You may want to check http://en.wikipedia.org/wiki/Favicon for full info 
on favicons... traditional usage and newer practice.

The basic thing to know here is that traditionally, favicons were 
associated with web *servers*, not web pages, and were assumed to be at 
http://hostname/favicon.ico, i.e. in the root folder (of URL space at 
least).
Assuming your subsitemap is not mounted at the root folder... e.g. it's 
probably mounted with a prefix such as "myapp"... your subsitemap 
matcher for favicon.ico will only match 
"http://hostname/myapp/favicon.ico". But your browser asks for a favicon 
at "http://hostname/favicon.ico", which will not match the matcher in 
your subsitemap.
>  I see that on the cocoon main
> sitemap there is a matching like
> 'pattern="**favicon.ico"' so i think that it matches
> all favicons on all requests anywhere it is and
> returns the cocoon one ("resources/icons/cocoon.ico").
> So i get some questions:
>
> 1. Why doesn't it match mine if it is processed first
> than cocoon main matching ?
>   
In the Cocoon top-level sitemap, which comes first: the **favicon.ico 
matcher or the matcher that mounts your subsitemap?
The matcher that mounts your subsitemap may be
    <map:match pattern="mount/*/**">
      <map:mount check-reload="yes" src="mount/{1}/" 
uri-prefix="mount/{1}"/>
    </map:match>
 or
    <map:match pattern="*/**">
      <map:mount check-reload="yes" src="{1}/" uri-prefix="{1}"/>
    </map:match>

If the favicon matcher comes first, that's why any requests for favicons 
end up using Cocoon's favicon instead of yours, even if the request is 
for a non-root-folder favicon (e.g. "http://hostname/myapp/favicon.ico").

> 2. Is the request/respones cycle of favicon from the
> browser always done to
> "http://localhost:8888/favicon.ico" or
> "http://localhost:8888/abc/favicon.ico" ?
>   
Traditionally the former. See above. But in most modern browsers, you 
can add <link> elements in your html <head> to specify what URL you want 
to use for the favicon.
See http://en.wikipedia.org/wiki/Favicon#Guidelines

> If i point to "http://localhost:8888/abc/favicon.ico"
> i get my icon
So you must have your subsitemap mounted before the "**favicon.ico" 
matcher in the Cocoon top-level sitemap.
> but if point any other url mapped i get
> the page but not my icon (i get the cocoon one) ...
>
>   
That's consistent with the above.
> I'm really confused with this. I hope anyone can help.
>
> Thx in advance.
>   
Hope the above helps. If you have more questions, let us know.
Lars
>
> 		
> ______________________________________________ 
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>   


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