MooTools Depender, Safari, etags and 412 Precondition Failed

Posted on by 
/**
* This replaces the default MooTools more Depender.request function to use
* HTTP "get" rather than "post".
*
* When sending requests for files via the depender, I was finding that Safari
* wasn't getting and re-evaluating them the second time I visited the page.
* This was because an etag was sent with each script.
*
* Safari responds to etags properly and adds "If-None-Match" and
* "If-Modified-Since" headers to another request for the same file. This makes
* Apache respond with a 412 status (Precondition Failed) as it should do for
* "post" requests (according to RFC 2616).
*
* Unfortunately Safari doesn't then deal with the 412 as it does with a 304
* (Not Modified). It doesn't grab what it has in the cache and put it in the
* response, it gives you nothing.
*
* For "get" requests, Apache has to respond with a 304, or 200 or whatever, but
* not 412. So we change the request method so we don't have to deal with 412.
*/
Depender.request = function(url, callback){
    new Request.JSON({
        url: url,
        secure: false,
        onSuccess: callback,
        method:'get'
    }).send();
};

24,935 thoughts on “MooTools Depender, Safari, etags and 412 Precondition Failed”

  1. Новости обзоры тест-драйвы ремонт и эксплуатация автомобилей https://5go.ru/

  5. Prime Biome supports natural gut health with powerful ingredients that aid digestion and boost immunity.
    Enhance your wellness and feel your best every day with Prime Biome.

  6. Appreciate this post. I’m based in Reading MA and
    just hired some painters. Honestly didn’t realize there were that many solid House
    Painters in Reading MA until I started digging.

  7. What’s up colleagues, how is the whole thing, and what you would
    like to say about this article, in my view its truly amazing designed for me.