Method start

test/common/websocket-server.js:22–31

()

  }

  start() {
    return new Promise((resolve) => {
      this.server.listen(this.port, () => {
        this.port = this.server.address().port;
        resolve();
      });
    }).catch((err) => {
      console.error('Failed to start WebSocket server:', err);
    });
  }

  handleUpgrade(req, socket, head) {
    const key = req.headers['sec-websocket-key'];