Setting up the Apache HTTP Server Proxy

Example inspired from the config for https://www.myxwiki.org (with only the important parts):

• Any acces to port 80 redirect to port 443
• Proxy the port 443 to the port 8080 (where most application servers are listening by default)
• Redirect / access to /xwiki/
• Make sure XWiki have enough information to know what is the source URL
• Make sure that special characters like / and + are allowed by Apache
• Mind the "noncanon" keyword. Without it, URLs containing semicolons will be mangled
• Enable WebSocket

<VirtualHost *:80>
  ServerName mydomain.com
  ServerAlias *.mydomain.com

  RewriteEngine On
  RewriteCond %{HTTPS} off
  RewriteRule ^/?(.*) https://%{SERVER_NAME}/$1 [R,L]
</VirtualHost>

<VirtualHost *:443>
  ServerName mydomain.com
  ServerAlias *.mydomain.com

  DocumentRoot /var/www/

  ErrorLog /var/log/apache2/xwiki-error.log
  CustomLog /var/log/apache2/xwiki-access.log combined

  RedirectMatch ^/$ /xwiki/

  <Location /xwiki>
    Order Deny,Allow
    Satisfy Any
  </Location>

  AllowEncodedSlashes NoDecode

  ProxyRequests Off
  <Proxy *>
    Order deny,allow
    Allow from all
  </Proxy>
  ProxyPreserveHost On
  ProxyPass /xwiki http://localhost:8080/xwiki nocanon upgrade=websocket
  ProxyPassReverse /xwiki http://localhost:8080/xwiki nocanon

  ## Workaround for https://bz.apache.org/bugzilla/show_bug.cgi?id=58001 (ProxyPreserveHost does not includes Forwarded)
  RequestHeader set Forwarded "proto=https"

  # TODO: add your SSL setup
</VirtualHost>