How can i distinguish different protocols on Apache2 with reverse proxy? - apache

Question

I need to set up a reverse proxy with Apache.
The remote website uses https and Web Socket Secure (wss).
I configured my Apache Web Server (version 2.2.22) in this way:
Listen 8443
<IfModule mod_websocket.c>
<IfModule mod_proxy.c>
SSLProxyEngine On
<VirtualHost *:80>
ServerAdmin webmaster#localhost
DocumentRoot /var/www
<Location />
ProxyPass https://10.0.3.100/
ProxyPassReverse https://10.0.3.100/
</Location>
<Location /dp/redirect>
ProxyPass https://10.0.3.100/
ProxyPassReverse https://10.0.3.100/
</Location>
ErrorLog ${APACHE_LOG_DIR}/error.log
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
<VirtualHost *:8443>
ServerAdmin webmaster#localhost
SSLEngine on
SSLCertificateFile /etc/apache2/ssl/apache.crt
SSLCertificateKeyFile /etc/apache2/ssl/apache.key
DocumentRoot /var/www
<Location />
ProxyPass https://10.0.3.100:8443/
ProxyPassReverse https://10.0.3.100:8443/
</Location>
<Location /dp/redirect>
ProxyPass https://10.0.3.100:8443/
ProxyPassReverse https://10.0.3.100:8443/
</Location>
ErrorLog ${APACHE_LOG_DIR}/error.log
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
</IfModule>
</IfModule>
I patched my Apache with mod_websocket (http://www.amoss.me.uk/2013/06/apache-2-2-websocket-proxying-ubuntu-mod_proxy_wstunnel/). The problem is that the Web Sockets don't work with that configuration.
I need a way to configure Apache to redirect wss request on port 8443 to wss://remote.server:8443, while https request on port 8443 to https://remote.server:8443 (so I need a way to "understand" the protocol request and redirect with the same protocol to the remote server).
How can I do? Thank you very much.