title: CodeIgniter 2 not setting csrf cookie on CentOS 6.5
body: <p>Here's the form code:</p>
  
  <pre><code>&lt;form action="http://142.54.168.154/login" method="post" accept-charset="utf-8"&gt;
  &lt;div style="display:none"&gt;
  &lt;input type="hidden" name="csrf_token_name" value="e255a710dae7c46526b285e95e18cf2b" /&gt;
  &lt;/div&gt;
  &lt;div&gt;Email *&lt;/div&gt;
  &lt;div&gt;&lt;input type="text" name="email" value=""/&gt;&lt;/div&gt;
  &lt;div&gt;Password *&lt;/div&gt;
  &lt;div&gt;&lt;input type="password" name="pw"/&gt;&lt;/div&gt;
  &lt;div&gt;GAuth (optional, but required if enabled on your account)&lt;/div&gt;
  &lt;div&gt;&lt;input type="text" name="gauth"/&gt;&lt;/div&gt;&lt;div&gt;&amp;nbsp;&lt;/div&gt;&lt;div&gt;
  &lt;input type="submit" class="btn" value="Submit"/&gt;&lt;/div&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>I have verified in \system\core\Security.php fctn csrf_verify() that $_POST[$this->_csrf_token_name] is set, but $_COOKIE[$this->_csrf_cookie_name] is empty.</p>
  
  <p>This code runs properly on a different server so can someone suggest a server issue.</p>