Hey Graham,

Okay, so now that I read your email below, and went back and read the docs,
it all makes perfect sense.  May I suggest you copy and paste this email
below as a "Notes" (eg, a grey box) in the documentation under that
section?  I think it is very clear and adds to the docs you already have.

Thanks,
Jason

On Sun, Oct 21, 2012 at 12:49 AM, Graham Dumpleton <
[email protected]> wrote:

> You could get away with a trailing slash for a sub URL for mount
> point, where target is exact path for a WSGI script file, where the
> requested URL is exactly the mount point and with no trailing path
> info.
>
> Thus you can have:
>
>   WSGIScriptAlias /suburl/ /some/directory/file.wsgi
>
> but this will only work for the URL /suburl/.
>
> If you use /suburl/path then it will fail with a 404 in the browser and
> error:
>
> Target WSGI script not found or unable to stat:
> /some/directory/file.wsgipath
>
> in the Apache error log.
>
> You end up with this as Apache removes the mount point from the URL
> and puts that on the end of the target path, because it strips the '/'
> at end of mount point, when joining the path it gets mucked up.
>
> If you really need a trailing slash on the mount point, then you could
> technically use:
>
>   WSGIScriptAlias /suburl/ /some/directory/file.wsgi/
>
> In short the rule is that for a sub URL, if there is a trailing slash
> on one, there must be on the other. You cannot have it on one and not
> the other.
>
> Mount point at top of site, ie.. '/', is treated in a special way by
> mod_wsgi to avoid this requirement. If mod_wsgi hadn't treated it
> specially, you would need to use:
>
>   WSGIScriptAlias / /some/directory/file.wsgi/
>
> in much the same way you have to with ScriptAlias. I personally found
> that looked really silly and it gave lots of problems in FASTCGI
> solutions where people left it off, so I made the special allowance to
> make trailing slash on target WSGI script file optional for mount
> point of '/'.
>
> Graham
>
> On 20 October 2012 15:30, Jason Garber <[email protected]> wrote:
> > Hey Graham,
> >
> > I've typically mounted with trailing slash with no issues.
> >
> > Can you point out why it would sometimes work, or maybe a deeper
> > understanding of how WSGIScriptAlias actually works in apache.  If you
> have
> > time, or a link.
> >
> > Thanks - this is something i'd like to have a better handle on.
> >
> > J
> >
> > On Oct 19, 2012 10:35 PM, "Graham Dumpleton" <[email protected]
> >
> > wrote:
> >>
> >> On 19 October 2012 06:41, Jason Garber <[email protected]> wrote:
> >> >  93    WSGIScriptAlias /api/callcenter/
> >> > /home/jason/DevLevel.2/TCM/Web/MemberSite/api/callcenter/index.wsgi
> >> >  94    WSGIScriptAlias /mobile
> >> > /home/jason/DevLevel.2/TCM/Web/MemberSite/mobile/index.wsgi
> >> >
> >> > When requesting /mobile/login...
> >> >
> >> > If it is "/mobile/", then I receive the following message in my apache
> >> > error
> >> > log:
> >> > [Thu Oct 18 15:31:14 2012] [error] [client 192.168.50.229] Target WSGI
> >> > script not found or unable to stat:
> >> > /home/jason/DevLevel.2/TCM/Web/MemberSite/mobile/index.wsgilogin
> >> >
> >> > If it is "/mobile", then everything works fine.
> >> >
> >> > The strange part here is at the end of the error message, we have
> >> > "index.wsgilogin".  If I change the request to "/mobile/foobarbaz",
> then
> >> > the
> >> > error ends with "index.wsgifoobarbaz"
> >> >
> >> > Is this a bug, or a feature?
> >>
> >> I would not expect any problem with /mobile/login.
> >>
> >> I actually would expect the problem you are describing with
> >> /api/callcenter/login however.
> >>
> >> When using WSGIScriptAlias and the target is a file, you should never
> >> use a trailing slash on the mount point.
> >>
> >> The only time a trailing slash should be use on mount point is if
> >> mounting at root of site, ie., '/', or the target is actually a
> >> directory and not a file. In this latter case, the target directory
> >> path should also have a trailing slash.
> >>
> >> You sure you were playing with trailing slash on the /mobile one?
> >>
> >> Graham
> >>
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