Fabio wrote:
> Hi,
>
> I'm evaluating Trac (and it really tops my expectations), but a
> strange error is causing a poor user experience: most of the pages
> fails into HTTP 303 response after submitting changes. Although this
> bad effect, the updates become effective. 

303 is not a failure code, but a redirect.
Trac uses the "POST-redirect-GET" idiom, which is good practice in web 
applications [1].
This can lead to, as with any other redirects, some issues with getting 
the protocol and host right, hence the discussion about 
use_base_url_for_redirect in the ticket 7060.

> It is similar to bugs
> reported in
>
> http://trac.edgewall.org/ticket/8583
>
> and in
>
> http://trac.edgewall.org/ticket/7060
>
>   

> Scenario description:
> - Trac 0.11.5 installation
> - tracd is serving the project
> - user has TRAC_ADMIN permission
> - tracd web front-end fails after submitting data (HTTP 303 is
> displayed at server console window)
>   

That's expected so far.

> - It's necessary to use back and refresh buttons to view changes
> become effective.
>   

Which browser are you using? Chances are this is IE7.

> - tracd IS NOT behind a proxy
>
>
> Any insights on how to fix it?
>   

Use the --http11 option when running tracd. Besides fixing your problem 
(likely the http://trac.edgewall.org/ticket/8020 one), you'll also get a 
nice performance boost ;-)

-- Christian

[1] http://en.wikipedia.org/wiki/Post/Redirect/Get

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