Error: The function RFB is not defined

Trying to set up a VNC client using AngularJS (tutorial link here), but encountering an error while running the application: TypeError: RFB is not a function

Below is the server.js code snippet:

var RFB = require('rfb2'),
    io = require('socket.io'),
    Png = require('../node_modules/node-png/lib/png').Png,
    express = require('express'),
    http = require('http'),
    clients = [],
    Config = {
      HTTP_PORT: 8090
    };

function createRfbConnection(config, socket) {
  try {
    var r = RFB({
      host: 'config.hostname',
      port: config.port,
      password: config.password,
      securityType: 'vnc',
    });
  } catch (e) {
    console.log(e);
  }
  addEventHandlers(r, socket);
  return r;
}

function addEventHandlers(r, socket) {
  var initialized = false,
      screenWidth, screenHeight;

  function handleConnection(width, height) {
    //handle connection details here
  }
  
  //event handlers for RFB instance

}

function encodeFrame(rect) {
  //encode frame logic here
}

function disconnectClient(socket) {
  //disconnect logic implementation
}

exports.run = function () {
  //server setup code here
};

Error message:

Listening on port 8090
Client connected
[TypeError: RFB is not a function]
Missing error handler on `socket`.
TypeError: Cannot read property 'on' of undefined
    //error messages log display

Seeking assistance with resolving this issue. Any help would be appreciated!

Answer №1

After a quick review of the documentation, it appears that there is an oversight in calling the createConnection method on the rfb object. It seems that this method is not currently being invoked.

var rfb = require('rfb2');
var r = rfb.createConnection({
  host: '127.0.0.1',
  port: 5900,
  password: 'secret'
});

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Keep an ear out for events coming from the identical Socket.IO socket

Currently, I am in the process of testing an Angular service that wraps Socket.IO. In order to successfully conduct this test, it is crucial for me to monitor events being emitted by the same socket that I am setting up. Below is the code snippet of the s ...

Acquiring JSON-formatted data through the oracledb npm package in conjunction with Node.js

I am currently working with oracledb npm to request data in JSON format and here is the select block example I am using: const block = 'BEGIN ' + ':response := PK.getData(:param);' + 'END;'; The block is ...

Unlocking the treasures of JSON data in JavaScriptDiscovering the secrets of extracting JSON

let info = { "@type": "Movie", "url": "/title/tt0443272/", "name": "Lincoln", "image": "https://m.media-amazon.com/images/M/MV5BMTQzNzczMDUyNV5BMl5BanBnXkFtZTcwNjM2ODEzOA ...

AngularJS: How to handle promise returned by 'Collector' service in order to pass value within function?

My Collector service is designed to manage models by interacting with localStorage and the server. The function Collector.retrieveModel(uuid) retrieves a model from the collector, first checking if it exists in localStorage, then requesting it from the ser ...

How does the behavior of instanceof change when used within JSON.stringify()?

I am utilizing the decimal.js library for conducting financial calculations within Node. In my code, I have crafted a custom JSON.stringify replacer function. However, I have noticed a discrepancy in the results of property type tests conducted using insta ...

Should we consider the implementation of private methods in Javascript to be beneficial?

During a conversation with another developer, the topic of hacking into JavaScript private functions arose and whether it is a viable option. Two alternatives were discussed: Using a constructor and prototype containing all functions, where non-API meth ...

Sharing a Redux action with nested child components

The current structure I am working with looks like this: UserPage -> Container |-----UserList -> Dumb Component |--- User ->Dumb Component My action and dispatch are connected to the container, which is UserPage. function mapStateToProps(state) ...

The issue of Elasticsearch results not being correctly parsed as JSON objects by JavaScript when retrieved from a Python client

I am facing an issue with extracting a Javascript object from the Elasticsearch(2.1.1) response received through my Python (2.7) client. Python code: es=Elasticsearch(); @app.route('/output') def findSpots(): lat = request.args.get('la ...

Tips for creating a personalized event handling strategy in JavaScript

I find myself in the midst of designing and developing a web store, trying to figure out the best approach to handling the loading of a substantial amount of product items. It seems that although AJAX is asynchronous, it doesn't necessarily mean paral ...

Updating the data and processing results settings for Select2 in an Angular 2 application

In my Angular2 app, I am utilizing Select2 and facing a challenge with accessing class properties in the data and processResults contexts. Unfortunately, these contexts do not belong to the class: export class DefaultFormInputSelectComponent { @Input ...

"Error encountered when trying to send form data to PHP server via ajax due to an unauthorized

I'm encountering an issue whenever I run my code and it keeps showing this error: Uncaught TypeError: Illegal invocation Any ideas on how to resolve this? const formdata = new FormData(); for (const file of myfile.files) { formdata.append("myF ...

Sorting a list based on user-defined criteria in Ionic 3

Currently working on a project using Ionic and Firebase, I am faced with the task of comparing arrays produced by users with those stored in Firebase. This comparison is essential for filtering a list of products. The user can reorder a list containing 3 ...

"Utilizing Trackball controls, camera, and directional Light features in ThreeJS version r69

I am struggling to synchronize trackball controls and camera with the directional light. Here is my situation: I start by initializing an empty scene with a camera, lights, and controls. Then, I load a bufferGeometry obj, calculate its centroid, and adjus ...

Adding my 'no' or 'id' in a URL using a JavaScript function can be accomplished by creating an onClick event

Here is the function I'm working on: function swipe2() { window.open('edit.php?no=','newwindow') } This is part of my PHP code (I skipped some lines): for ($i = $start; $i < $end; $i++) { if ($i == $total_results) { ...

Implementing a smooth camera movement in Three.js using the mousewheel

Is there anyone who can assist me with achieving smooth camera movement (forward/backward) using the mouse wheel? The current code I have is not providing the desired smoothness. document.addEventListener( 'mousewheel', onDocumentMouseWheel, fal ...

The reverse lookup for 'export2' without any parameters could not be located

Although my code is similar to this, I am encountering an error when trying to access a different view. My code works fine, but no matter what I do, I keep getting the same error. As a beginner in Django 2.1, I apologize if the solution is obvious. views. ...

Using jQuery to reference my custom attribute---"How to Use jQuery to reference My

Can you explain how to reference a tag using a custom attribute in jQuery? For example, if I have a tag like this: <a user="kasun" href="#" id="id1">Show More...</a> I want to reference the tag without using the id. So instead of using: $( ...

What's the reason for the double invocation of afterSelectionChange() in ng-grid?

The response to this specific inquiry did not sit well with me. There seems to be something off about the code. As a newcomer to Angular, I saw an opportunity to enhance my learning by creating a Plunk to assist the original poster. You can find my Plunk ...

Guide to testing express Router routes with unit tests

I recently started learning Node and Express and I'm in the process of writing unit tests for my routes/controllers. To keep things organized, I've split my routes and controllers into separate files. How should I approach testing my routes? con ...

Tips for storing a GET response in a variable using ExpressJS and LocomotiveJS

I am currently navigating the world of NodeJS and have successfully developed an app using ExpressJS and LocomotiveJS framework. I am now faced with a challenge: how do I store a particular GET response in a variable within a controller? For instance: fil ...