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Re: "Too many Redirects".

From: Hugh Sasse <hgs@dmu.ac.uk>
Date: Thu, 5 Mar 2009 10:26:42 +0000 (GMT)
To: Laurent Carcone <carcone@w3.org>
cc: Amaya Mailing List <www-amaya@w3.org>
Message-ID: <alpine.LFD.2.00.0903050958350.13989@trueman.cs.cse.dmu.ac.uk>
On Wed, 4 Mar 2009, Laurent Carcone wrote:

> Hello Hugh,
> 
> Amaya is based on the libwww for HTTP requests and there is indeed a maximum
> of redirection allowed in the library (I guess to avoid infinite loop). By
> default this maximum is set to 5 and Amaya set it to 7 at the initialization
> (so more than the spec suggests).
> I haven't see any difference between HTTP 1.0 and HTTP 1.1 concerning this
> aspect in the library.

The part of the spec that I quoted suggests to me that there should be.
Who maintains the library?  I seem to recall that the linemode browser
which was part of the library is no longer maintained.

> So , there is no way in the current version to dynamically change this
> maximum.

What about future versions of Amaya?  == Are you giving this the status
of WONTFIX?

> I guess it's the first report on this problem, the mail you pointed out
> concerns a redirection problem for the PUT method and I think it has been
> fixed.

Would redirect code be so different for put and post that it would not be
shared?  What causes you to think it has been fixed -- can you look it up,
or is this from memory?
> 
> Regards,
> Laurent Carcone
> 
        Thank you,
        Hugh
> 
> Hugh Sasse wrote:
> > I have been attempting to debug a problem (with colours not showing
> > up) on an internal server.  I've tried a number of browsers,
> > (Firefox, internet explorer and Opera) but when I remembered Amaya
> > is more rigorous, I tried that.  It detected bugs in the HTML, but
> > also it gave me a message about too many redirects.
> > 
> > It turns out that HTTP 1.1 mentions this:
> > 
> > Q> 10.3 Redirection 3xx
> > Q>         [...]
> > Q>    Note: previous versions of this specification recommended a
> > Q>    maximum of five redirections. Content developers should be aware
> > Q>    that there might be clients that implement such a fixed
> > Q>    limitation.
> > 
> > so therefore it no longer applies in HTTP 1.1, only 1.0.  I can't find
> > any means of turning this error detection off.  I agree that it is a
> > useful warning for 1.0 compliance, but if the client has requested 1.1
> > then it should not matter, should it?
> > 
> > Searching the archives for previous reports of this problem I found this:
> > 
> > http://lists.w3.org/Archives/Public/www-amaya/2006JulSep/0019.html
> > 
> > which is about 2 and half years old, but doesn't seem to have been
> > implemented.  I had six redirect questions to respond to before this
> > other error message came up, and that was for one submit button.
> > 
> >         Thank you,
> >         Hugh
> > 
> >   
Received on Thursday, 5 March 2009 10:27:24 UTC

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