Re: [Lynx-dev] lynx does not check charset on reload

[Stanislav Brabec]

Thomas Dickey wrote in Tue Dec 20, 2011 at 20:21 -0500:
> On Tue, Dec 20, 2011 at 06:14:25PM +0100, Stanislav Brabec wrote:
> > Thomas Dickey wrote:
> > > On Mon, Dec 19, 2011 at 04:20:26PM +0100, Stanislav Brabec wrote:
> > > > Hallo.
> > > > 
> > > > lynx-2.8.7 (rel. 2) does not check charset header for changes on reload.
> > > > 
> > > > It causes page corruption in following situation:
> > > > 
> > > > 1. Enter URL.
> > > > 2. Server has problems and returns an error message with a dumb charset
> > > >    (ASCII, ISO-8859-1).
> > > > 3. Reload page.
> > > > 4. Server returns correct page that has a different charset than the
> > > >    previous error message (e. g. UTF-8).
> > > 
> > > I see... Is this something that's easy to reproduce with a particular
> > > server?  (If not, I'll have to set something up to be sure I'm fixing
> > > the right thing).
> > 
> > No. The server where it occurred presents errors rarely. If you send a
> > patch, I guess I will be able to confirm the fix in a week or so.
> > 
> > You can change configuration of your server between reloads, or you can
> > use apache MultiView feature and rename file from .iso8859-1 to .utf8.
> 
> well, _here_, I can see half of the problem.  If I change the default
> charset on the server and restart it between reloads, lynx switches
> from ISO-8859-1 to UTF-8, but doesn't go the other way.  That might
> be the same issue as your report.  I can take a closer look once I've
> got my current xterm patch complete this week.
> 
Today I have seen the error on affected server again.
Error message "IIS 7.0 Detailed Error - 503.4 - Service Unavailable" had
charset utf-8. Valid contents on reload had charset windows-1250.

So I can fix the reproducer above:
before reload: utf-8 (error message)
after reload: windows-1250 (corrupted valid contents)

-- 
Best Regards / S pozdravem,

Stanislav Brabec
software developer
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