title: Connection header disapper when HTTP2
body: <p>In making a request to my website with curl and HTTP 1.1, I see my <code>keep-alive</code> connection header explicitly:</p>
  
  <pre><code>$ curl https://website.com/ -i
  
  HTTP/1.1 200 OK
  Content-Type: text/html; charset=utf-8
  Content-Length: 2
  Connection: keep-alive
  </code></pre>
  
  <p>But with Chrome's developer tool and HTTP 2 the header is missing:</p>
  
  <pre><code>Content-Type: text/html; charset=utf-8
  Content-Length: 2
  </code></pre>
  
  <p>In HTTP 2 is it normal that the connection header is not sent (and why)?</p>