[Fwd: [Html-widget] formfu - new features]

[Mario Minati]

Am Mittwoch 14 März 2007 03:08 schrieb Jason Kohles:
> On Mar 13, 2007, at 11:35 AM, Mario Minati wrote:
> > With Regex::Common I found some address that still validate but
> > which are not
> > valid, at least I've never seen addresses like them:
> >
> > https://minati.de./
> > (the point after 'de' shouldn't be valid)
>
> Yes it is, all hostnames actually end with a . (the DNS root), but
> nobody requires you
> to enter it since they all end with one.  There are instances where
> you DO want to
> include it though.  For example if your DNS search order includes
> 'foo.com', and you
> type into your web browser http://www/ it takes you to http://
> www.foo.com/, but what
> happens if your DNS server search order includes foo.com and you have
> a host
> named minati.de.foo.com?  Will you go to minati.de or to
> minati.de.foo.com?  To
> make sure you get just minati.de and not minati.de.foo.com you can use
> http://minati.de./
>
> > On the other hand this url
> > https://minati.de/index.html#lkj
> > is invalid, but that might be some trubble with the '#' and the
> > encoding.
> > (I'm fighting with utf-8 at the moment, do you have experience in
> > that Carl?)
>
>  From 'RFC Uniform Resource Identifiers (URI): Generic Syntax'
>
> 2.4.3. Excluded US-ASCII Characters
>
>     Although they are disallowed within the URI syntax, we include
> here a
>     description of those US-ASCII characters that have been excluded and
>     the reasons for their exclusion.
>
> ... snip ...
>
>     The character "#" is excluded because it is used to delimit a URI
> from a
>     fragment identifier in URI references (Section 4).
>
> Your URI isn't valid unless you encode the #

Thank you Jason,

so I was only looking at it from my practical experience not from the theory 
behind it.
And I thought the fragment was also part of what Regex::Common URI matches. I 
just checked and probably mixed something up when reading the source last 
time.

So this brings me back to my problem to find a constrain that handles the http 
webadresses a user could type. For me that should include the fragment and 
doesn't need necessarily the https? scheme.

For now I would suggest to make a custom Constraint out of it which doesn't 
need to be part of the main formfu distribution.

What do you think Carl?

Greets,
Mario