I have a simple snippet on the front end as follows which I can verify is working. I can do this by changing the port to something other than 3000 and it will error. It is definitely finding the server at that port:
// Create WebSocket connection .. will error if I change the port
const socket = new WebSocket('ws://localhost:3000');
console.log('DEBUG: Web socket is up: ');
// Connection opened
socket.addEventListener('open', function (event) {
socket.send('Hello Server!');
});
I am using ws-express on the server side as follows. This was the minimal example given in the NPM docs:
const expressWs = require('express-ws')(app);
app.ws('/echo', (ws, req) => {
ws.on('message', (msg) => {
ws.send(msg);
});
});
However, the open
event on the client never fires. I would like to send messages from the client to the server, but I assume, that I need an open
event to fire first.