Having a weird problem w/ T-Mobile proxies I believe.
I have a test site locate here: http://wap.drewpydraws.com/test/
Pretty basic stuff. All it does is display the time. Then when you reload it, it should refresh the time.
Works fine for Sprint and Verizon phones. All t-mobile phones can view it once, but then it takes 10-15 min for it to refresh itself. Hell, I can even delete the file and it will still load the cached version.
I even accessed it once from my phone then used a friends phone and it loaded the cached version of the site. This tells me it's not the browser that is caching it, but some proxy on t-mobiles network. My server log files show no attempt to load the file while it's pulling from the cached state.
I have put it on another server as well, to rull out my primary host, with the same results.
Is there some way I can prevent their proxy from caching my site? Or if not have any of you ever tried to work something like this out with the cell company? I called them, they opened a ticket. I provided all this information to them and they said "it's a 3rd party site and we don't support them."
The problem I'm having is not happening on every 3rd party site. I'm thinking it might have something to do with my site recieving low traffic volume compaired w/ others?
Just incase there is something I've done wrong here's my code.
PHP Code:
<?php
putenv('TZ=America/Los_Angeles');
header( "Content-type: text/vnd.wap.wml" );
// Start of deck. First, the XML prologue
echo( "<?xml version=\"1.0\"?>\n" );
echo( "<!DOCTYPE wml PUBLIC " );
echo( "\"-//WAPFORUM//DTD WML 1.1//EN\" " );
echo( "\"http://www.wapforum.org/DTD/wml_1.1.xml\">\n" );
// Now, the deck itself
echo( "<wml>\n" );
// header to force the page to revalidate
echo( "<head>\n" );
echo( "<meta forua='true' http-equiv='Cache-Control' content='no-cache'/>\n" );
echo( "<meta forua='true' name='application/x-up-cacheop' content='true'/>\n" );
echo( "<meta forua='true' http-equiv='Cache-Control' content='max-age=0'/>\n" );
echo( "<meta forua='true' http-equiv='Cache-Control' content='must-revalidate'/>\n" );
echo( "<meta forua='true' http-equiv='Expires' content='Tue, 01 Jan 1980 1:00:00 GMT'/>\n" );
echo( "</head>\n" );
// Start the main index card
echo( "<card id='welcome' title='proxy test view'>\n");
echo( "<p>\n");
$time=date('h:i:s A');
echo("The current time: $time");
echo("<br/><br/>");
echo("if you reload the page the time should update. if it does not then it's not loading the page from my website.");
echo( "</p>\n");
echo( "</card>\n");
echo( "</wml>\n");
echo( "\n");
?>
Dev Shed Forums Sponsor:
May 28th, 2006, 08:08 PM
Proxies of death
Del.icio.us
Digg
Google
Spurl
Blink
Furl
Simpy
Y! MyWeb
Linear Mode
