Re: setPageRefreshOnBacktrackEnabled problem?

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On 2012-04-26, at 7:41 PM, Ond=C5=99ej =C4=8Cada wrote:

> Chuck,
>=20
> On Apr 27, 2012, at 4:23 AM, Chuck Hill wrote:
>=20
>> Which browser are you using?
>=20
> Safari / Mac OS X. The client reported problems from iPad.

Ah, yes.  My aging memory is slowly starting to cough up things.  :-)


> 03-Jun-2008 05:18 PM Chuck Hill:
> Safari always caches HTML content.  Regardless of the headers, it uses =
the local cache instead of going back to the server.  This is a very =
serious problem with dynamic web apps (like for example, this one).
>=20
> Following the instructions =
here:http://developer.apple.com/internet/safari/faq.html#anchor5
> does nothing.  See attached screen shot of inspector in Safari showing =
the headers returned to Safari.  Clicking back on this page uses the =
local cache.  Clearly, it should not do that.

Radar 5983915.  Still open.  Though I did get a little curt with Apple =
Engineering when they asked for a reproduction case.

Clearly, Safari is totally broken.  I have no solution for this other =
than "don't back track".



Chuck




>=20
>> It seems like maybe the browser is caching instead of respecting the =
headers.
>=20
> Hmmmm..... seems it is so! I've just downloaded FF, and the behaviour =
there is indeed considerably different from Safari, and seems from it, =
it works (more or less) all right. Namely, backtrack does trigger =
dispatch/appendToResponse there all right
>=20
> (Somewhat inconsistently with what you suggested /or at least with =
what I understood/, the action then _gets_ called all right, too. That's =
not important though.)
>=20
> Which is bad, since my client rather needs that the app does work with =
iPad/Safari, too. Darn...
>=20
>> It is probably worth using a proxy for your browser (Charles is one) =
and see if it is actually sending a request.  If not, then it is buggy =
or something is wrong with those headers.  If it IS sending a request, =
then there is a problem in WO or perhaps your web server.  Hmmm, that =
reminds me of something.  Are you using mod_expires in Apache?  It can =
mess with the headers.
>=20
> The headers look like this:
>=20
> =3D=3D=3D=3D
> HTTP/1.1 200 Apple WebObjects
> cache-control: private
> cache-control: no-cache
> cache-control: no-store
> cache-control: must-revalidate
> cache-control: max-age=3D0
> expires: Fri, 27-Apr-2012 02:32:48 GMT
> content-type: text/html; charset=3DUTF-8
> pragma: no-cache
> x-webobjects-loadaverage: 4
> date: Fri, 27-Apr-2012 02:32:48 GMT
> set-cookie: wosid=3DsQtMjsY7xerCBetSFGubaM; version=3D"1"; =
path=3D/cgi-bin/WebObjects/CEBOIS.woa
> set-cookie: woinst=3D-1; version=3D"1"; =
path=3D/cgi-bin/WebObjects/CEBOIS.woa
> content-length: 4140
> =3D=3D=3D=3D
>=20
> Thanks and all the best,
> ---
> Ondra =C4=8Cada
> OCSoftware:     [email protected]               http://www.ocs.cz
> private         [email protected]             http://www.ocs.cz/oc
>=20
>=20
>=20

--=20
Chuck Hill             Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their overall =
knowledge of WebObjects or who are trying to solve specific problems.   =20=

http://www.global-village.net/gvc/practical_webobjects









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