If you are using Apache web server (2.4 or above), enable these modules in httpd.conf file :

1. mod_proxy.so
2. mod_proxy_wstunnel.so

Add this setting to your httpd.conf file

``` {.lang-php .prettyprint .prettyprinted dir="ltr" style="margin-top: 0px; margin-bottom: 1em; padding: 5px; border: 0px; overflow: auto; width: auto; max-height: 600px; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; color: rgb(57, 51, 24); word-wrap: normal; background-color: rgb(238, 238, 238);"} ProxyPass /wss2/ ws://ratchet.mydomain.org:8888/

Use this URL in your JavaSscript call when you want a WSS connection:

``` {.lang-php .prettyprint .prettyprinted dir="ltr" style="margin-top: 0px; margin-bottom: 1em; padding: 5px; border: 0px; overflow: auto; width: auto; max-height: 600px; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; color: rgb(57, 51, 24); word-wrap: normal; background-color: rgb(238, 238, 238);"}
var ws = new WebSocket("wss://ratchet.mydomain.org/wss2/NNN");

Restart Apache web server and make sure that your Ratchet worker (web socket connection) is open before applying the settings (telnet hostname port).

Source:

http://stackoverflow.com/questions/16979793/php-ratchet-websocket-ssl-connect