Anyone has any further comments on this?
--- rf <[EMAIL PROTECTED]> wrote: > > --- Bill Barker <[EMAIL PROTECTED]> wrote: > > > > "rf" <[EMAIL PROTECTED]> wrote in message > > > news:[EMAIL PROTECTED] > > > Hello > > > I am using a caching Filter that *conditionally* > > uses > > > the default servlet (through RequestDispatcher) > to > > > serve a page, or generate it again. In the case > > when > > > the default servlet is used to serve the page, > > this > > > servlet seems to send the headers Last-modified > > and > > > ETag, and this seems to have an effect on IE > > which, on > > > a shift-refresh, does not seem to request the > page > > > again at all. (IE, by default, is set to check > for > > > newer versions of stored pages 'Automatically'). > > > > > > 1. Is the IE behaviour due to those two headers? > > Yes. (or, more generally, a browser won't fetch a > > non-updated page that > > includes a Last-Modified header when the page > hasn't > > changed). > > > > > 2. If yes, how can I instruct the default > servlet > > not > > > send these headers? > > > > You can't. > > > > > 3. Sending these headers is good, but I thought > IE > > > would send the request, nevertheless, with the > > > If-none-matched and If-Modified-Since. Is this > > > something wrong with IE? > > > > IE should send a If-Modified-Since (and get a '304 > > Not Modified' response). > > Otherwise, you will have to take it up with Bill > > Gates ;-). > > 1. Are you sure? This is a critical issue - I am > sure > there must have been discussions on this in the > past. > This surely must have troubled a lot of people. > > 2. HttpServlet interface has a getLastModfied > method. > Which is better/recommended: > A. Use a filter that caches the output and use the > default servlet to serve that next time > OR > B. Use only a servlet with a getLastModified > method > and put Last-Modified and ETag headers myself. > > For A, I have the problem as mentioned earlier (IE > not > sending the request at all). > I have not yet tested B, but do all the browsers use > the If-None-Match and If-Modified-Since headers? In > case > the browsers do not send that, tomcat will not use > the > getlastModified method of the servlet(or does it?) > and > I dont get what I want. > > Thanks > ~rf > > > __________________________________________________ > Do you Yahoo!? > Yahoo! Web Hosting - establish your business online > http://webhosting.yahoo.com > > --------------------------------------------------------------------- > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > __________________________________________________ Do you Yahoo!? Yahoo! Web Hosting - establish your business online http://webhosting.yahoo.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
