title: How can I know the HTTP protocol of arbitary website?
body: <p>I'm trying to login to "<a href="http://students.ksa.hs.kr/scmanager/stuweb/index.jsp" rel="nofollow noreferrer">http://students.ksa.hs.kr/scmanager/stuweb/index.jsp</a>" using swift. </p>
  
  <p>I found a question about this in stackoverflow.</p>
  
  <p><a href="https://stackoverflow.com/questions/30653480/how-to-log-into-web-site-using-uiwebview-with-swift">How to log into web site using uiwebview with swift?</a></p>
  
  <p>But how can I know that "RTrn" or "EPostam" or "LoginUser" stuff?</p>