title: upload a large file over 1GB to 2GB using jQuery File Upload - blueimp (Ajax based) php / yii it showing error in Firefox Browser
body: <p>I am trying to upload a large file over <code>1GB</code> to <code>2GB</code> using <code>jQuery File Upload - blueimp</code> (Ajax based)  <code>php / yii Framework 1.15</code> i have set these values to upload larger file</p>
  
  <pre><code>memory_limit = 2048M
  upload_max_filesize = 2048M 
  post_max_size = 2048M 
  </code></pre>
  
  <p><strong>Session time set</strong> </p>
  
  <pre><code>ini_set('session.gc_maxlifetime', 7200);
  </code></pre>
  
  <p>I test lesser than <code>1GB</code> file that is uploading successfully </p>
  
  <p>when I am trying to upload larger than <code>1GB</code> file it shows Forbidden error after 50mins uploading time...</p>
  
  <p><strong>Server Specifications</strong> </p>
  
  <ul>
  <li>it's a virtual machine, and due to it's not production yet so we only
  using <code>1CPU</code> and <code>1GB memory</code>, 64bit</li>
  </ul>
  
  <p>File uploading is working in <code>Google Chrome</code>and <code>Microsoft Edge</code>(I have tested with 1.15 and 1.88 GB file) when I am uploading file in <code>Mozilla Firefox</code> less than 300MB it is uploading successfully but when I am trying yo upload greater than 300MB file after some time Ajax call is fails and give <code>500 Internal Server Error</code>
  header response is in below image 
  <a href="https://i.stack.imgur.com/vQbWZ.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/vQbWZ.jpg" alt="header response"></a></p>