title: How to set the authorisation header in angular 4( Not inside the Access-Control-Request-Headers). It should be as a Authorisation: value
body: <p>how to set the authorisation header in angular 4( Not inside the Access-Control-Request-Headers). It should be as a Authorisation: value.</p>
  
  <p>Headers should come as follow as </p>
  
  <pre><code>Accept:*/*&lt;br/&gt;
  Accept-Encoding:gzip, deflate, sdch&lt;br/&gt;
  Accept-Language:en-US,en;q=0.8&lt;br/&gt;
  **Authorisation:accesstoken**&lt;br/&gt;
  Access-Control-Request-Method:GET&lt;br/&gt;
  Cache-Control:max-age=0&lt;br/&gt;
  Connection:keep-alive&lt;br/&gt;
  Host:192.168.1.190:58603&lt;br/&gt;
  Origin:http://localhost:4200&lt;br/&gt;
  Referer:http://localhost:4200/analytics&lt;br/&gt;
  User-Agent:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.90 Safari/537.36&lt;br/&gt;
  &lt;br/&gt;
  &lt;br/&gt;
  &lt;br/&gt;
  </code></pre>
  
  <p>But it is coming as follow as:</p>
  
  <pre><code>Accept:*/*&lt;br/&gt;
  Accept-Encoding:gzip, deflate, sdch&lt;br/&gt;
  Accept-Language:en-US,en;q=0.8&lt;br/&gt;
  **Access-Control-Request-Headers:Authorisation**&lt;br/&gt;
  Access-Control-Request-Method:GET&lt;br/&gt;
  Cache-Control:max-age=0&lt;br/&gt;
  Connection:keep-alive&lt;br/&gt;
  Host:192.168.1.190:58603&lt;br/&gt;
  Origin:http://localhost:4200&lt;br/&gt;
  Referer:http://localhost:4200/analytics&lt;br/&gt;
  User-Agent:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.90 Safari/537.36&lt;br/&gt;
  &lt;br/&gt;
  &lt;br/&gt;
  &lt;br/&gt;
  </code></pre>