Use mod_proxy_wstunnel2016/02/20

	Enable mod_proxy_wstunnel module to set WebSocket Proxy.
[1]	For example, configure httpd to set proxy on /chat for an application which listens on localhost:1337. The sample application is from here (section [3]).

root@www:~#

a2enmod proxy proxy_http proxy_wstunnel

root@www:~#

vi /etc/apache2/mods-enabled/proxy.conf

# add into <IfModule mod_proxy **> - </IfModule>

    ProxyRequests Off
    <Proxy *>
        Require all granted
    </Proxy>

    ProxyPass /socket.io/ http://127.0.0.1:1337/socket.io/
    ProxyPassReverse /socket.io/ http://127.0.0.1:1337/socket.io/

    ProxyPass /chat http://127.0.0.1:1337/
    ProxyPassReverse /chat http://127.0.0.1:1337/

root@www:~#

/etc/init.d/apache2 restart

* Restarting web server apache2
...done.

Access to the sample App to make sure it works normally on proxy environment.

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