title: Golang iris-web. Get HTTP referer and useragent
body: <p>lang and trying to use a framework called iris-web.</p>
  
  <p>i wanted to know how to get the http referrer and user-agent properly..</p>
  
  <p>I've been through the documentation pdf. No clear explanation..</p>
  
  <p>Any help will be deeply appreciated.</p>