What is WebRTC?

What is WebRTC?

What is WebRTC?

Web Real-Time Communication (WebRTC) is an open-source project and technology that enables real-time communication capabilities directly in web browsers without requiring additional plugins or applications. It supports video, voice, and generic data to be sent between peers, allowing developers to build powerful voice and video communication solutions.

Understanding WebRTC

At its core, WebRTC is designed to overcome the challenges associated with communicating in real-time over diverse network environments. It includes several interrelated APIs and protocols that work together to achieve this:

  • PeerConnection: Establishes direct connections between users for the exchange of audio and video data.
  • DataChannel: Allows the exchange of generic data between users.
  • MediaStream: Acquires audio and video streams from devices like webcams, microphones, or screen capture.

These components are implemented in almost all modern web browsers, including Google Chrome, Mozilla Firefox, Apple Safari, and Microsoft Edge. This broad compatibility means that WebRTC works across desktop and mobile platforms without any additional software.

Key Features of WebRTC

  1. Browser-Based Real-Time Communication: WebRTC enables real-time communication such as voice, video, and data transfer without the need for plugins or third-party software installations.
  2. Peer-to-Peer Connection: By establishing direct connections between peers, WebRTC minimizes latency and optimizes the quality of the communication, even in varied network conditions.
  3. Encryption: WebRTC ensures secure communication by mandating encryption for all data streams, including audio and video channels.
  4. Interoperability: Since WebRTC is supported by the major web browsers, it provides a consistent experience across different devices and platforms.
  5. Media Capture and Streaming: WebRTC allows for capturing media from the user's device (like microphones and cameras) and sharing that media in real-time.

Practical Examples of WebRTC

Video Chat Application

One of the most common uses of WebRTC is in building peer-to-peer video chat applications. Platforms like Google Meet and Facebook Messenger utilize WebRTC to enable millions of users to engage in video communication without any downloads.

Sample Code Snippet:

// Get local video and audio streams
navigator.mediaDevices.getUserMedia({ video: true, audio: true })
.then(function(stream) {
    var video = document.querySelector('video');
    video.srcObject = stream;
    video.onloadedmetadata = function(e) {
.catch(function(err) {
    console.log(err.name + ": " + err.message);

// Establishing a peer connection
var connection = new RTCPeerConnection();

// Handling the connection state
connection.onicecandidate = function(event) {
    if (event.candidate) {
        // Send the candidate to the remote peer

Siperb takes the hassle out of doing WebRTC development yourself. Siperb also handles the signalling required to communicate between two Peers. Siperb works with standard SIP so no changes are required to your existing PBX (like Asterisk) . Find out more about WebRTC at http://www.siperb.com/  

Data Channels for Gaming

WebRTC is not just for audio and video; it's also great for making real-time gaming applications. Data channels enable developers to build multiplayer games with features like live chatting and direct game data exchange.

Sample Code Snippet:

// Creating a data channel
var connection = new RTCPeerConnection();
var channel = connection.createDataChannel("gameChannel");

channel.onopen = function(event) {
    channel.send('Hi Player!');

channel.onmessage = function(event) {
    console.log('Received message:', event.data);

Live Streaming

WebRTC can also be used for live streaming applications, allowing for broadcasts of events in real-time to large audiences without significant delays.

Sample Code Snippet:

var connection = new RTCPeerConnection();
connection.ontrack = function(event) {
    var stream = event.streams[0];
    var videoElement = document.createElement('video');
    videoElement.srcObject = stream;


WebRTC is transforming the way people communicate over the internet by making real-time, peer-to-peer communication simple and accessible. Whether it's for video calls, interactive games, or live streaming, WebRTC provides the tools necessary for developers to build sophisticated, secure, and efficient communication applications directly within the web browser. Its ongoing development and adoption are set to continue shaping the future of online communication.

Siperb simplifies WebRTC by providing a ready-to-use, robust framework that connects your existing PBX systems to WebRTC without the steep learning curve and development overhead. This not only accelerates deployment but also ensures that your solution is built on a foundation of proven reliability and enhanced security features. Additionally, SIPERB offers ongoing support and updates, which means you benefit from continuous improvements and adaptations to the latest communication technologies and standards, without diverting your internal resources away from your core business activities. https://www.siperb.com/