/**
* 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. I truly believe that having a skilled team from a MESQUITE MOVING COMPANY can turn chaos into calm during moves!!! # # any keyword ## Mesquite full service movers

2. Just got again from the highest quality charcuterie tasting occasion in Orange County! I can’t endorse it adequate. More data at grazing table .

3. I enjoyed this post. For additional info, visit https://maps.app.goo.gl/6jy375mKwwfxd4yY6 .

4. Very useful post. For similar content, visit roof replacement St Louis MO .

5. This was highly educational. For more, visit affordable roof repair Fort Worth .

6. I must thank you for the efforts you have put in penning this site.
   I really hope to view the same high-grade blog posts from you later on as well.
   In truth, your creative writing abilities has
   inspired me to get my own, personal blog now

7. Thanks for the insightful write-up. More like this at water damage restoration services .

8. МВПОЛ успешно занимается изготовлением промышленных полов. В арсенале компании самое передовое оборудование, а штат состоит из настоящих профессионалов. Готовы выполнить любые заказы, учитывая особенности и потребности клиента. Убедитесь в преимуществах сотрудничества с нами! Ищете ремонт полимерного пола? Mvpol.ru – здесь указана стоимость готового изделия под ключ. Компания много позитивных отзывов заслужила. Мы знаем, чего заказчик ждет. Строго контролируем все этапы производства. Примеры работ можете найти на нашем сайте.