在 Websocket 服务器上启用 SSL

Question

I am using the ws node library to create a WebSocket server. I am trying to enable SSL so I can connect from an https web page and I'm having no luck!

Here is my server code:

const fs = require('fs');
const https = require('https');
const WebSocket = require('ws');

const server = https.createServer({
    cert: fs.readFileSync('./certs/cert.pem'),
    key: fs.readFileSync('./certs/privkey.pem')
});
const wss = new WebSocket.Server({ server });

And here is my client side code:

var serverAddress
if (process.env.NODE_ENV == 'production') {
    serverAddress = 'wss://ec2_____.us-east-2.compute.amazonaws.com:18181'
} else {
    serverAddress = 'wss://localhost:18181'
}
const ws = new WebSocket(serverAddress);

The server runs fine but I can't connect to it. I just get this error in the console:

websocket.js:17 WebSocket connection to 'wss://localhost:18181/' failed: Error in connection establishment: net::ERR_CONNECTION_REFUSED