title: TYPO3 Backend with reverseProxyIP and ssl
body: <p>My server configuration is a TYPO3 installation Vs. 6.2.31 combined with a reverse proxy. The system is running fine with http. </p>
  
  <p>When we try to switch to https we geht this Error Message in the backend: </p>
  
  <p>"Connection Problem
  Sorry, but an error occurred while connecting to the server. Please check your network connection."</p>
  
  <p>And the page tree is not loading. </p>
  
  <p>When switching back to http all is working one again. </p>
  
  <p>Our settings: </p>
  
  <ul>
  <li>[SYS][reverseProxyIP] = (IP of our reverse Proxy)</li>
  <li>[SYS][reverseProxyHeaderMultiValue] = last</li>
  <li>[SYS][reverseProxySSL] = *</li>
  </ul>
  
  <p>What i tried: </p>
  
  <ul>
  <li>deactivate all extensions apart from the system extensions</li>
  <li>no entry in syslog (error reporting is on development)</li>
  <li>no entries in the server logs</li>
  <li>lockSSL in install tool 3 results in never ending 302 redirects</li>
  <li>lockSSL with option 2 results in this error message: </li>
  </ul>
  
  <p>Fatal error: Uncaught exception 'RuntimeException' with message 'TYPO3 Backend not accessed via SSL: TYPO3 Backend is configured to only be accessible through SSL. Change the URL in your browser and try again.' in /srv/httpd/sites/fland_ww1/typo3_src-6.2.31/typo3/sysext/core/Classes/Core/Bootstrap.php:897 Stack trace: #0 /srv/httpd/sites/fland_ww1/typo3_src-6.2.31/typo3/init.php(54): TYPO3\CMS\Core\Core\Bootstrap->checkSslBackendAndRedirectIfNeeded() #1 /srv/httpd/sites/fland_ww1/typo3_src-6.2.31/typo3/index.php(21): require('/srv/httpd/site...') #2 {main} thrown in /srv/httpd/sites/fland_ww1/typo3_src-6.2.31/typo3/sysext/core/Classes/Core/Bootstrap.php on line 897</p>
  
  <p>It seems that some requests e.g. for the page tree are made without ssl - ajax calls i presume - but i dont have a clue how to debug it. </p>
  
  <p>Andy ideas? </p>
  
  <p>Thanks!</p>