Re: USER_AGENT wrong thanks to proxy cache! Help!

You need to read up on content negotiation. Stopping your proxy from cacheing any and all PHP stuff is a bit drastic. You simply need to tell the proxy-cache that your content varies based on the user agent. You can do this simply with: Header('Vary: User-Agent'); You may want to read RFC 2616, especially section 14.44. -Rasmus On Tue, 7 May 2002, Roderick Martin wrote: > I've got a script that calls the USER_AGENT variable and uses it to select a CCS > file to load. Problem is, as I move from browser to browser, apparently the > HTTP_USER gets stuck in the proxy cache and some browsers identify themselves as > other browsers. > > Here's what I've found out. > > I have an .htm with several SSI's, one of which calls a .php. The .php runs fine > - no problem. > > I upload the file to the server (Netscape Enterprise on NT) and load the page > through the proxy (which reports the HTTP_USER) on IE for Mac. HTTP_USER is > correct. I load the same page through the proxy on Mozilla for Mac. HTTP_USER is > correct. I can switch back and forth between these as many times as I like and > the info is correct. > > Now I switch to Windows and load on IE6 through proxy. HTTP_USER is correct. > Netscape on Win? Correct. Now if I go back to the Mac and try IE again, it > reports the HTTP_USER as IE6 on Windows NT. > > We have a couple Win boxes that don't go through the proxy, so I ran this same > test again with a renamed file and then the HTTP_USER is correct. > > So... I apparently can jump between browsers on Macs with no ill side-effects. > If I avoid the proxy on Windows I'm safe, but as soon as I hit a Windows browser > through the proxy, the HTTP_USER is stuck on that browser identity when I return > to the Mac side. > > Our server admin has blocked .php and .css files from being cached in the proxy, > but it seems to have no effect. He personally wants to know if there is anything > else he can block that might help. > > Me? I'm baffled, which isn't hard as I'm relatively new to PHP. > > The proxy server is a Compaq TaskSmart server (C1500) with the latest updates. > > -- > PHP Windows Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php >