Upgrade required

[ghost]

Thank you for your sharing of the "ws" module. It helps me done the web app with websocket. It worked for one year, but it suddenly not working from these few days. It shows "Upgrade required" when I am accessing the page. Does anyone has ideas or experience for this issue? Thanks.

[lpinca]

Your WebSocket server is probably receiving a plain HTTP request so it answers with 426:

ws/lib/websocket-server.js

Lines 62 to 70 in 8281940

	this._server = http.createServer((req, res) => {
	const body = http.STATUS_CODES[426];
	res.writeHead(426, {
	'Content-Length': body.length,
	'Content-Type': 'text/plain'
	});
	res.end(body);
	});

Make sure that the request is initiated by the WebSocket object in the client.