How to limit the number of requests?

Question

Nginx

There is a server on Node JS with websockets. I use the ws library and there is no built-in function to limit the number of requests.
I tried to make a restriction through Nginx , but web sockets send only 1 HTTP request, and then the WebSocket protocol enters, so you can’t restrict it through it.
The last option was the idea for each connection to make a variable that is incremented by each request and every N seconds it is reset for everyone, but maybe there are some better or lower-level options?

Answer 1

Try just doing wss.close() where wss is the WebSocketServer instance when the number of connections reaches the limit. Then, if any of the connections closes, create a new WebSocketServer.
or, if there is a limit, immediately close the newly created connection in the wss.on('connection' ...) event handler.