Re: Prevent Loading from Cache in Internet Explorer
Perhaps a little follow up wisdom. Caching can happen anywhere between the origin server and the browser, so the browser specific solution might not meet all conditions. RFC 2616 - Hypertext Transfer Protocol -- HTTP/1.1 http://www.faqs.org/rfcs/rfc2616.html is very explicit about caching. Search the contents for the phrase "no-cache" for a strong discussion. (RFC's are frequently legible if you read with the right attitude.) Bottom line from the RFC is that you put in a line which reads: Cache-Control: no-cache (mind the space) in the HTTP Header - Note that this is NOT the ... /HEAD> section of your html, but in the actual header of the file going back (the Reply header described in section 6 of the RFC). Among other things, that header declares things like "Content-Type". Perhaps the statements described below were intended to be in front of the statements. You are free to experiment, of course. From my experience, when I put the Cache-Control directive in the stream, everybody behaved the way I wanted them to. Microsoft's IIS at version 4 included a tab called "HTTP Headers" which permitted the addition of a custom header whose name was "Cache-Control", and whose value was "no-cache". This was to accommodate folks who read RFC's and want to do things that Microsoft hadn't yet figured out a "more Microsoft" way to do. Jerry Kassebaum wrote: Thank you! It wasn't easy, but the answer was there! I'll give the full explanation if anyone wants it, but here is the short one. The CGI and JavaScript files were updating, but not the two *.js files with the chapter and verse! So I eliminated them and put the info in the JavaScript file. The reason I want to use the CGI/Perl file is that there are about 600 verses the program picks from, and I don't want to have to send all that to the player. The working version is now http://biblescramble.com/ezo7.cgi. THANK YOU SO MUCH! That was a tuff one! # You said: This article discusses some no-cache bugs in IE and a workaround. http://www.htmlgoodies.com/beyond/reference/article.php/3472881 And since u have the verse in a javascript file, what u really want is the javascript file to be reloaded, not just the html page. I don't know if a browser expects .js files to change with a page reload. But looking at what ur trying to do, I don't know why ur trying to do it this way. The easy was is to just load all the verses and hints into one javascript array and have the play again button just pick a random number in that range and update the page elements. U could do this with no perl at all. You're really making a DHTML app. -- ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: Prevent Loading from Cache in Internet Explorer
Thank you! It wasn't easy, but the answer was there! I'll give the full explanation if anyone wants it, but here is the short one. The CGI and JavaScript files were updating, but not the two *.js files with the chapter and verse! So I eliminated them and put the info in the JavaScript file. The reason I want to use the CGI/Perl file is that there are about 600 verses the program picks from, and I don't want to have to send all that to the player. The working version is now http://biblescramble.com/ezo7.cgi. THANK YOU SO MUCH! That was a tuff one! # You said: This article discusses some no-cache bugs in IE and a workaround. http://www.htmlgoodies.com/beyond/reference/article.php/3472881 And since u have the verse in a javascript file, what u really want is the javascript file to be reloaded, not just the html page. I don't know if a browser expects .js files to change with a page reload. But looking at what ur trying to do, I don't know why ur trying to do it this way. The easy was is to just load all the verses and hints into one javascript array and have the play again button just pick a random number in that range and update the page elements. U could do this with no perl at all. You're really making a DHTML app. -- ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: Prevent Loading from Cache in Internet Explorer
This article discusses some no-cache bugs in IE and a workaround. http://www.htmlgoodies.com/beyond/reference/article.php/3472881 And since u have the verse in a javascript file, what u really want is the javascript file to be reloaded, not just the html page. I don't know if a browser expects .js files to change with a page reload. But looking at what ur trying to do, I don't know why ur trying to do it this way. The easy was is to just load all the verses and hints into one javascript array and have the play again button just pick a random number in that range and update the page elements. U could do this with no perl at all. You're really making a DHTML app. -- REMEMBER THE WORLD TRADE CENTER ---=< WTC 911 >=-- "...ne cede males" 0100 ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: Prevent Loading from Cache in Internet Explorer
Thanks for your help, Aaron! My code is not object oriented. The beginning lines are #!/usr/bin/perl use CGI ":standard"; srand(); The ending lines are: print "Location: http://biblescramble.com/biblescramble6.html\n";; print header; I tried changing the ending lines to: print "Location: http://biblescramble.com/biblescramble6.html\n";; #Same as above print header(-type=>'text/html', -expires=>'-1d'); #Expire the content yesterday - That didn't do it. It still loads the same verse over and over. By the way, I added http://biblescramble.com/ezo6.cgi and http://biblescramble.com/biblescramble6.html which call each other, rather than using twice as many files and using a cycle, since that didn't work anyway. Any help would be appreciated. * You wrote: I think what he means is he wants to know how to set headers to disable caching. #!/usr/bin/perl use CGI; my $q = new CGI(); print $q->header(-type=>'text/html', -expires=>'-1d'); #Expire the content yesterday - forces browsers to refresh -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steven Manross Sent: June 10, 2005 12:38 PM To: Jerry Kassebaum; perl-win32-users@listserv.ActiveState.com Subject: RE: Prevent Loading from Cache in Internet Explorer IE->Tools->Internet Options->Settings->Change the radio box to "Every visit to the page" Steven -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jerry Kassebaum Sent: Friday, June 10, 2005 8:38 AM To: perl-win32-users@listserv.ActiveState.com Subject: Prevent Loading from Cache in Internet Explorer Sorry, but this is a repeat question. Here's the question: How do I prevent Internet Explorer from loading from its cache? Here's the problem: I have an online game, biblescramble.com/ezo1.cgi, that uses Perl to choose a random Bible verse from 600 or so, and then calls a JavaScript to play hangman with the verse. The JavaScript has the option of calling the Perl script to play another game. This works fine in Firefox. But in Internet Explorer information is saved in a cache and the game is repeated. The only solution I have is writing a duplicate of the Perl and JavaScript files, and having the first call the second and making a cycle. That's how I have it set up now, which is why there are two distinct verses. I really don't want to write 10 of each script, or how ever many it would take to overload the cache. There must be a simple command to prevent this problem. Any command to reload a page is not what I'm looking for, since Perl is loading a JavaScript page and visa-versa. I need the command, "Get this from the server only!" In biblescramble.com/ezo1.cgi (notice the 1) the verse is written to a text file, and the reference is written to another, which the JavaScript reads. So there are three permanent files on the server: Perl, JavaScript, 600 verses; and two theat keep getting overwritten: random verse, reference. In biblescramble.com/ezo4.cgi (notice the 4) I use the Perl script to write a new JavaScript with each use, and the JavaScript includes the verse and reference. So there are two permanent files, Perl and 600 verses, and one JavaScript files that keeps getting overwritten. ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: Prevent Loading from Cache in Internet Explorer
I think what he means is he wants to know how to set headers to disable caching. #!/usr/bin/perl use CGI; my $q = new CGI(); print $q->header(-type=>'text/html', -expires=>'-1d'); #Expire the content yesterday - forces browsers to refresh -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steven Manross Sent: June 10, 2005 12:38 PM To: Jerry Kassebaum; perl-win32-users@listserv.ActiveState.com Subject: RE: Prevent Loading from Cache in Internet Explorer IE->Tools->Internet Options->Settings->Change the radio box to "Every visit to the page" Steven -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jerry Kassebaum Sent: Friday, June 10, 2005 8:38 AM To: perl-win32-users@listserv.ActiveState.com Subject: Prevent Loading from Cache in Internet Explorer Sorry, but this is a repeat question. Here's the question: How do I prevent Internet Explorer from loading from its cache? Here's the problem: I have an online game, biblescramble.com/ezo1.cgi, that uses Perl to choose a random Bible verse from 600 or so, and then calls a JavaScript to play hangman with the verse. The JavaScript has the option of calling the Perl script to play another game. This works fine in Firefox. But in Internet Explorer information is saved in a cache and the game is repeated. The only solution I have is writing a duplicate of the Perl and JavaScript files, and having the first call the second and making a cycle. That's how I have it set up now, which is why there are two distinct verses. I really don't want to write 10 of each script, or how ever many it would take to overload the cache. There must be a simple command to prevent this problem. Any command to reload a page is not what I'm looking for, since Perl is loading a JavaScript page and visa-versa. I need the command, "Get this from the server only!" In biblescramble.com/ezo1.cgi (notice the 1) the verse is written to a text file, and the reference is written to another, which the JavaScript reads. So there are three permanent files on the server: Perl, JavaScript, 600 verses; and two theat keep getting overwritten: random verse, reference. In biblescramble.com/ezo4.cgi (notice the 4) I use the Perl script to write a new JavaScript with each use, and the JavaScript includes the verse and reference. So there are two permanent files, Perl and 600 verses, and one JavaScript files that keeps getting overwritten. ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: Prevent Loading from Cache in Internet Explorer
IE->Tools->Internet Options->Settings->Change the radio box to "Every visit to the page" Steven -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jerry Kassebaum Sent: Friday, June 10, 2005 8:38 AM To: perl-win32-users@listserv.ActiveState.com Subject: Prevent Loading from Cache in Internet Explorer Sorry, but this is a repeat question. Here's the question: How do I prevent Internet Explorer from loading from its cache? Here's the problem: I have an online game, biblescramble.com/ezo1.cgi, that uses Perl to choose a random Bible verse from 600 or so, and then calls a JavaScript to play hangman with the verse. The JavaScript has the option of calling the Perl script to play another game. This works fine in Firefox. But in Internet Explorer information is saved in a cache and the game is repeated. The only solution I have is writing a duplicate of the Perl and JavaScript files, and having the first call the second and making a cycle. That's how I have it set up now, which is why there are two distinct verses. I really don't want to write 10 of each script, or how ever many it would take to overload the cache. There must be a simple command to prevent this problem. Any command to reload a page is not what I'm looking for, since Perl is loading a JavaScript page and visa-versa. I need the command, "Get this from the server only!" In biblescramble.com/ezo1.cgi (notice the 1) the verse is written to a text file, and the reference is written to another, which the JavaScript reads. So there are three permanent files on the server: Perl, JavaScript, 600 verses; and two theat keep getting overwritten: random verse, reference. In biblescramble.com/ezo4.cgi (notice the 4) I use the Perl script to write a new JavaScript with each use, and the JavaScript includes the verse and reference. So there are two permanent files, Perl and 600 verses, and one JavaScript files that keeps getting overwritten. ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Prevent Loading from Cache in Internet Explorer
Sorry, but this is a repeat question. Here's the question: How do I prevent Internet Explorer from loading from its cache? Here's the problem: I have an online game, biblescramble.com/ezo1.cgi, that uses Perl to choose a random Bible verse from 600 or so, and then calls a JavaScript to play hangman with the verse. The JavaScript has the option of calling the Perl script to play another game. This works fine in Firefox. But in Internet Explorer information is saved in a cache and the game is repeated. The only solution I have is writing a duplicate of the Perl and JavaScript files, and having the first call the second and making a cycle. That's how I have it set up now, which is why there are two distinct verses. I really don't want to write 10 of each script, or how ever many it would take to overload the cache. There must be a simple command to prevent this problem. Any command to reload a page is not what I'm looking for, since Perl is loading a JavaScript page and visa-versa. I need the command, "Get this from the server only!" In biblescramble.com/ezo1.cgi (notice the 1) the verse is written to a text file, and the reference is written to another, which the JavaScript reads. So there are three permanent files on the server: Perl, JavaScript, 600 verses; and two theat keep getting overwritten: random verse, reference. In biblescramble.com/ezo4.cgi (notice the 4) I use the Perl script to write a new JavaScript with each use, and the JavaScript includes the verse and reference. So there are two permanent files, Perl and 600 verses, and one JavaScript files that keeps getting overwritten. ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
