Yeah, I had to deal with the same problem in RussKey extension (it
translates text on page to and from Russian by going to one of predefined
translator sites) and in the StockTicker extension, so I also used a time
variable in the URL. Just waiting for Amazon to patent this technique any
time now...
had the same problem a long time ago.
the way to solve it is to append current time to the request url.
random strig doesn't help since it might repeat.
here's my hacky way of doing it (noCache is a parameter to the
xmlhttprequest handling function, defaults to true):
// use the time hack if caller doesn't want cached request
if (noCache) {
url += (url.match(/\?/) == null ? '?' : '&') + (new Date()).getTime();
}
This should append the unix time to the request as a parameter, taking care
to insert a ? or & when needed
e.g.:
http://foo.com/bar.html -> http://foo.com/bar.html?12345
http://foo.com/bar.html?foobar=baz ->
http://foo.com/bar.html?foobar=baz&12345
HTH
Andrey Gromyko wrote:
Hi All,
In the NewsFox extension I use next lines to download feed(s):
var xmlhttp = new XMLHttpRequest();
xmlhttp.open("get", feed.url);
xmlhttp.setRequestHeader("User-Agent", "Mozilla/5.0 NewsFox/0.3.4");
xmlhttp.overrideMimeType("application/xml");
xmlhttp.onload = function() { checkFeed(index, xmlhttp.responseXML);
}
xmlhttp.send(null);
Adding the next line before send doesn't help to avoid the use of
Firefox's cache:
xmlhttp.channel.loadFlags =
Components.interfaces.nsICachingChannel.LOAD_BYPASS_CACHE;
And that causes problems with some feeds. Does anybody know how can I
bypass the cache? Similarly tp the behaviour of the browser when somebody
pressed Shift+Reload.
Thanks,
Andrey
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