How to setup WebSocket on local machine?

Question

open server

I used more than one ( 1 , 2 ) ready-made implementation, in theory everything should work and there are no errors in the code itself. In addition, it connects normally to echo.websocket.org, which means there is a problem with the server side. Namely, in the following:
when trying to connect to my socket, it knocks out

WebSocket connection to 'ws://localhost:8000/server.php' failed: Error in connection establishment: net::ERR_CONNECTION_REFUSED

perhaps all because of the port that no one has opened, which OpenServer does not allow, after editing httpd.conf, the values ​​\u200b\u200bare still changed to the previous ones
and when trying to connect to port 80

WebSocket connection to 'ws://localhost/server.php' failed: Error during WebSocket handshake: Unexpected response code: 200

as much as I managed to google, everything says that nothing prevents you from connecting to port 80, but in the end it just returns code 200
and, according to the second example, writes to the logs

socket_bind() failed: An attempt was made to access a socket in a way forbidden by its access permissions.
socket_listen() failed: An invalid argument was supplied.
Server started on 127.0.0.1 : 80