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POGetting Resource interpreted as Script but transferred with MIME type text/html when I'm offline and requesting css and js files from AppCache
 

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  1. POGetting Resource interpreted as Script but transferred with MIME type text/html when I'm offline and requesting css and js files from AppCache
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    <p>I am developing a web app in which I am trying to use the HTML5 application cache.</p> <p>I can successfully cache the files and load the files from AppCache while online. But when I go offline, all the css and js files are transferred with MIME type text/html instead of application/x-javascript or text/css, so it is not properly working on offline.</p> <p>This is what I get when I request a page while offline.</p> <pre><code>Application Cache Error event: Manifest fetch failed (-1) https://example.com/manifest Resource interpreted as Stylesheet but transferred with MIME type text/html: "https://example.com/offline_assets/stylesheets/cache/offline_all.css". Resource interpreted as Script but transferred with MIME type text/html: "https://example.com/javascripts/offline/respond.min.js". Resource interpreted as Script but transferred with MIME type text/html: "https://example.com/javascripts/yui3/3.1.1/build/yui/yui-min.js". Resource interpreted as Script but transferred with MIME type text/html: "https://example.com/offline_assets/sprockets.js". </code></pre> <p>Therefore, the page is not styled and getting whole kind of JS errors.</p> <p>How can I properly set such that css and js files are transferred with a proper MIME type from appcache while offline? thank you for your suggestions</p> <p>Updated: this is how I serve the manifest file on the server</p> <pre><code>class ManifestController &lt; ApplicationController def show headers['Content-Type'] = 'text/cache-manifest' render :text =&gt; File.open("#{RAILS_ROOT}/public/manifest.appcache").read, :layout =&gt; false end end </code></pre> <p>and I have passed this validation test: <a href="http://manifest-validator.com/" rel="nofollow">http://manifest-validator.com/</a></p> <p>Here is my Manifest file:</p> <pre><code>CACHE MANIFEST #&lt; /offline_assets/stylesheets/cache/offline_all.css /offline_assets/fonts/websymbols-regular-webfont.woff /offline_assets/javascripts/yui3/3.1.1/build/yui/yui-min.js /offline_assets/sprockets.js /offline_assets/javascripts/offline/respond.min.js /offline_assets/images/logoClio.png /offline_assets/images/search/icoSearch.png /offline_assets/images/icoArrow-down.png /offline_assets/images/gold/submenu_current.png /offline_assets/images/calendar/left_arrow.gif /offline_assets/images/calendar/right_arrow.gif /offline_assets/images/calendar/left_arrow_on.gif /offline_assets/images/calendar/right_arrow_on.gif /offline_assets/images/calendar-lg.gif /offline_assets/images/logo-tagline.gif /offline_assets/images/icoRecent-matter.png /offline_assets/images/icoRecent-contact.png /offline_assets/stylesheets/yui/dt-arrow-dn.png /offline_assets/stylesheets/cache/sprite.png /offline_assets/images/timer_stop.png /offline_assets/images/add3.png /offline_assets/images/arrow_down.gif /offline_assets/images/spinner.gif /offline_assets/images/timer_start.png /offline_assets/images/delete.png /offline_assets/images/offline/logoClio.png /offline_assets/images/offline/bgSteps-1.png /offline_assets/images/offline/bgSteps-2.png /offline_assets/images/offline/bgSteps-3.png /offline_assets/images/offline/icoReload.png /offline_assets/images/offline/dt-arrow-dn.png /offline_assets/images/offline/sprite.png #&gt; # offline.html will be displayed if the user is offline and attempt to get uncached pages FALLBACK: / /offline.html # All other resources (e.g. sites) require the user to be online. NETWORK: * </code></pre> <p>And this is one of the cached file that shows MIME type and other details on chrome://appcache-internals/</p> <pre><code>https://staging.goclio.com/offline_assets/sprockets.js?cec750eb3581f3d9f78c97d0ad8331df HTTP/1.1 200 OK Server: nginx/0.8.55 Date: Fri, 09 Mar 2012 19:56:17 GMT Content-Type: application/x-javascript Last-Modified: Fri, 09 Mar 2012 19:51:10 GMT Expires: Thu, 31 Dec 2037 23:55:55 GMT Cache-Control: max-age=315360000 X-Backend-Server: 333963-web02.rs.goclio.com:81 Accept-Ranges: bytes Vary: Accept-Encoding, User-Agent Content-Encoding: gzip </code></pre> <p>Another update: this works fine on firefox without getting any MIME type error. Naoya</p>
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