+ ws.on('error', (error) => {
+ logger.error(`${this.logPrefix(moduleName, 'start.ws.onerror')} WebSocket error:`, error);
+ });
+ ws.on('close', (code, reason) => {
+ logger.debug(
+ `${this.logPrefix(
+ moduleName,
+ 'start.ws.onclose',
+ )} WebSocket closed: '${getWebSocketCloseEventStatusString(
+ code,
+ )}' - '${reason.toString()}'`,
+ );
+ });
+ });
+ // eslint-disable-next-line @typescript-eslint/no-unused-vars
+ this.httpServer.on('connect', (req: IncomingMessage, socket: Duplex, head: Buffer) => {
+ if (req.headers?.connection !== 'Upgrade' || req.headers?.upgrade !== 'websocket') {
+ socket.write(`HTTP/1.1 ${StatusCodes.BAD_REQUEST} Bad Request\r\n\r\n`);
+ socket.destroy();
+ }
+ });
+ this.httpServer.on('upgrade', (req: IncomingMessage, socket: Duplex, head: Buffer): void => {
+ this.authenticate(req, (err) => {
+ if (err) {
+ socket.write(`HTTP/1.1 ${StatusCodes.UNAUTHORIZED} Unauthorized\r\n\r\n`);
+ socket.destroy();
+ return;
+ }
+ try {
+ this.webSocketServer.handleUpgrade(req, socket, head, (ws: WebSocket) => {
+ this.webSocketServer.emit('connection', ws, req);
+ });
+ } catch (error) {
+ logger.error(
+ `${this.logPrefix(
+ moduleName,
+ 'start.httpServer.on.upgrade',
+ )} Error at handling connection upgrade:`,
+ error,
+ );
+ }