Universal link - The domain has some validation issue
<p>Im working on universal link to open the application while tap the url. I am using https server and done all the steps from apple (<a href="https://developer.apple.com/library/ios/documentation/General/Conceptual/AppSearch/UniversalLinks.html#//apple_ref/doc/uid/TP40016308-CH12-SW1" rel="noreferrer">Apple Doc</a>). But the apple universal link validator show below error, </p>

<blockquote>
  <p>Your file's 'content-type' header was not found or was not recognized.</p>
</blockquote>

<p><img src="https://i.stack.imgur.com/S3z43.png" alt="enter image description here"></p>

<p>The apple-app-site-association file successfully uploaded to server and the file be like below,</p>

<pre><code>{
    "applinks": {
        "apps": [],
        "details": [
            {
                "appID": "J2HBF9A3PZ.com.aors.speaku",
                "paths": ["*","/"]
            }
        ]   
    }
}
</code></pre>

<p>And apple said no need to sign the <code>apple-app-site-association</code> file whether the domain has https. </p>

<blockquote>
  <p>If the file is unsigned, it should have a Content-Type of
  application/json. Otherwise, it should be application/pkcs7-mime.</p>
</blockquote>

<p>So my query is how to mention the content type (<code>application/json</code>) in this <code>apple-app-site-association</code> file???</p>

<p>please help me on this. i don't know what it mean exactly.</p>