Apps Android okhttp3 websocket not working with live URL returns “404 not found” message

[Re_D1234]

I have basic android websocket sample code which works fine with "ws://echo.websocket.org" but when I try with "wss://xyz.vpnliveserver.abc/mnw" does not work. I think it could be due to VPN as the live URL cannot be accessed without VPN connection.

Any advice will be helpful.