You have two options a) Send a temporary redirect to another URL with the question
b) Respond with a uncacheable content displaying the question. And in both cases you have figure out a way how the user can confirm that he wants the object downloaded.. However you need to know that HTTP knows nothing about "pages". In HTTP a "page" simply consists of N objects, each requested individually with no direct relation between the requests, usually starting with the HTML content, then style sheets, inline images etc.. and the browser also caches items locally so you may end up with only having a request for a single inlined image when the user selects to display a certain page, or none at all.. It is only the browser who has a notion of what a "page" is by parsing the HTML content. Lets take a simple page as an example http://www.squid-cache.org/ This page consists of the following HTTP objects http://www.squid-cache.org/ http://www.squid-cache.org/Squidlogo2.gif http://www.squid-cache.org/Icons/squidnow.gif http://www.squid-cache.org/Icons/cache_now.gif When the browser has all 4 objects the page is fully displayed. If the browser is missing one or more of these objects it will send individual HTTP requests for each missing object. To Squid the request for http://www.squid-cache.org/ is no different from the request for http://www.squid-cache.org/Squidlogo2.gif or any of the other inline images. It is just a HTTP request for a specific URL. You also need to keep in mind that there is also many other applications than browsers using HTTP. There is such things as antivirus agent updates, various active applets requesting special information (i.e. "realtime" stock exchange rates or whatever)... and many more, and you do not want these to be "disturbed" by your question as there is no human in the other end who can confirm the question.. fre 2003-02-07 klockan 09.30 skrev Louis Lau: > I don't know if this would simplify my problem. Does anyone know how to push > prompt to browser in some occassion? like if they are accessing a site not > in cache, prompt them and only get that page directly if they want? -- Henrik Nordstrom <[EMAIL PROTECTED]> MARA Systems AB, Sweden
