How to check whether the OroCRM websocker server (Ratchet) is working correctly?

Method 1.Using websocket.org web interface

http://www.websocket.org/echo.html
https://www.websocket.org/echo.html

Method 2. Using curl

curl -i -N \
	-H "Connection: Upgrade" \
	-H "Upgrade: websocket" \
	-H "Host: crm.mage2.pro" \
	-H "Origin: https://crm.mage2.pro" \
	https://crm.mage2.pro:443