wss client jaavascript

  const options = {
      ca: fs.readFileSync("./ca.crt"),
    };

    var client = new WebSocketClient();

    client.on("connectFailed", function (error) {
      console.log("Connect Error: " + error.toString());
    });

    client.on("connect", function (connection) {
      console.log("WebSocket Client Connected");
      connection.on("error", function (error) {
        console.log("Connection Error: " + error.toString());
      });
      connection.on("close", function () {
        console.log("echo-protocol Connection Closed");
      });
      connection.on("message", function (message) {
        if (message.type === "utf8") {
          console.log("Received: '" + message.utf8Data + "'");
        }
      });

    });
    client.connect("wss://192.168.230.138:8080/", null, null, null, options);