title: No Access-Control-Allow-Origin error in Meteor app
body: <p>I added CORS extension to chrome. When called ajax from localhost I got response in the form of XML. If I disabled CORS extension I got the following error. I referred so many questions in this community. But I cant't resolve my problem. It may duplicate but I'm asking this question for help with hope.</p>
  
  <blockquote>
    <p>XMLHttpRequest cannot load <a href="https://buzz.machaao.com/feed" rel="nofollow noreferrer">https://buzz.machaao.com/feed</a>. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '<a href="http://localhost:3000" rel="nofollow noreferrer">http://localhost:3000</a>' is therefore not allowed access. The response had HTTP status code 401..</p>
  </blockquote>
  
  <p>And my code is</p>
  
  <pre><code>HTTP.get('https://buzz.machaao.com/feed',{
     headers: {
        "Access-Control-Allow-Origin" : "*"
        }
          }, (err, res) =&gt; {
        if(err) {
              console.log(err);
        }
        else {
              console.log(res);
        }
      });
  </code></pre>