title: Authentication issues with WWW-Authenticate: Negotiate
body: <p>I am trying to access a site that is password protected. It is not using basic authentication (even though the same user/pass box pops up in firefox) as the response header is <code>WWW-Authenticate: Negotiate</code>.</p>
  
  <p>I want to automate the login process by sending the correct header.</p>
  
  <p>In basic you would use something like:</p>
  
  <pre><code>Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
  </code></pre>
  
  <p>What would I use for negotiate?</p>