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POWhy is Chrome searching for my favicon.ico when I serve up a file from ASP.NET MVC?
 

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  1. POWhy is Chrome searching for my favicon.ico when I serve up a file from ASP.NET MVC?
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    <p>I have a controller in MVC serving up images from a database.</p> <p><b>EDIT:</b> This still happens if I serve up a file over completely standard means in MVC.</p> <p>Every time I request my image, Google Chrome also searches for my favicon.ico.</p> <p>To avoid unnecessary discussions about other things "I should also care about" let us assume I do not care for caching whatsoever in this example and I shall always return HTTP response 200 with the file.</p> <p>In my controller I return the following:</p> <pre><code>return File(fileBytes, contentType); </code></pre> <p>After inspecting Fiddler 2, the following response is generated:</p> <blockquote> <p>HTTP/1.1 200 OK<br/> Cache-Control: public<br/> Content-Type: image/gif<br/> ETag: oYu19wKo+KEHkyxZQ2WXAA==<br/> Server: Microsoft-IIS/7.0<br/> X-AspNetMvc-Version: 1.0<br/> X-AspNet-Version: 2.0.50727<br/> X-Powered-By: ASP.NET<br/> Date: Tue, 16 Jun 2009 18:48:45 GMT<br/> Content-Length: 29344<br/></p> </blockquote> <p>By comparison, this is the response in Fiddler from Google when I request (for the first time) the Google logo:</p> <blockquote> <p>HTTP/1.1 200 OK<br/> Content-Type: image/gif<br/> Last-Modified: Wed, 07 Jun 2006 19:42:34 GMT<br/> Date: Tue, 16 Jun 2009 18:50:54 GMT<br/> Expires: Wed, 16 Jun 2010 18:50:54 GMT<br/> Cache-Control: public, max-age=31536000<br/> Server: gws<br/> Content-Length: 8706<br/> Age: 2<br/></p> </blockquote> <p>However, in Chrome after getting my image Chrome attempts to find my favicon.ico. It does <em>not</em> try this after requesting the Google logo.</p> <p>Any ideas why this might be happening? From my understanding on HTML, the answer must be in the response header because surely that is all the client has to go on? Please correct me!</p> <p><b>EDIT 2:</b> It seems a lot of people have completely misunderstood the problem. <i>The problem is <b>not</b> the lack of a favicon and the erroring requests in MVC - it's the problem of requesting a favicon when only an image is being loaded, with a content type of "IMAGE/JPEG", as opposed to a webpage with a content type of "TEXT/HTML"!!</i></p>
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    1. USjoshcomley
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    1. CODoes the same thing happen if you return a simple string like "Hello World" instead of a File?
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      1. USJoseph
    2. COI would recommend you add "iis" "google-chrome" and "http-headers" tags to the question so as to steer the focus away from MVC. Also what is the behavior when pulling static images from other sites (http://asp.net/ for example)?
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      1. POWhy is Chrome searching for my favicon.ico when I serve up a file from ASP.NET MVC?
      1. USPeter Seale
    3. COThis post is pretty old but it came up in a google search and I am still seeing this behavior. I am tailing my error logs on my server and every time I request a page with chrome, indeed I see a `file does not exist: /path/favicon.ico`. Definitely a chrome thing, kinda annoying.
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      1. POWhy is Chrome searching for my favicon.ico when I serve up a file from ASP.NET MVC?
      1. USthefoyer
 

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