Rupert  Beatty

Rupert Beatty


WebRTC-iOS: A Simple Native WebRTC Demo iOS App using Swift


A simple native WebRTC demo iOS app using swift.


This demo app's purpose is to demonstrate the bare minimum required to establish peer to peer connection with WebRTC. This is not a production ready code! In order to have a production VoIP app you will need to have a real signaling server (not a simple broadcast server like in this example), deploy your own Turn server(s) and probably integrate CallKit and push notifications.


  1. Xcode 12.0 or later
  2. iOS 10 or later
  3. Cocoapods
  4. Node.js + npm (For NodeJS Signaling server)

- OR -
macOS 10.15 (For Swift signaling server)

Legacy xcode support:



Setup instructions

  1. Start the signaling server (Either NodeJS or Swift)
  2. Navigate to WebRTC-Demo-app folder
  3. Run pod install
  4. Open WebRTC-Demo.xcworkspace
  5. Open Config.swift and set the defaultSignalingServerUrl variable to your signaling server ip/host. Don't use localhost or if you plan to connect other devices in your network to your mac.
  6. Build and run on devices or on a simulator (video capture is not supported on a simulator).

Starting NodeJS signaling server

1. Navigate to the `signaling/NodeJS` folder.
2. Run `npm install` to install all dependencies.
3. Run `node app.js` to start the server.

Starting Swift signaling server

Note: This step requires MacOS 10.15

1. Navigate to the `signaling/Swift` folder.
2. Run `make`
3. Run `./server` to start the server

Alternative method: Open WebRTC-Demo.xcworkspace and run the SignalingServer scheme.

Run instructions

  1. Run the app on two devices with the signaling server running.
  2. Make sure both of the devices are connected to the signaling server.
  3. On the first device, click on 'Send offer' - this will generate a local offer SDP and send it to the other client using the signaling server.
  4. Wait until the second device receives the offer from the first device (you should see that a remote SDP has arrived).
  5. Click on 'Send answer' on the second device.
  6. when the answer arrives to the first device, both of the devices should be now connected to each other using webRTC, try to talk or click on the 'video' button to start capturing video.
  7. To restart the process, kill both apps and repeat steps 1-6.

CallKit integration

Disclaimer: I am not sure if this is the best way doing it but this has worked for me so far:

  1. Configure WebRTC audio session to use manual audio and disable audio:
    1. RTCAudioSession.sharedInstance().useManualAudio = true
    2. RTCAudioSession.sharedInstance().isAudioEnabled = false
  2. On your CXProvider delegate's provider(CXProvider, didActivate: AVAudioSession) method:
    1. Call RTCAudioSession.sharedInstance().audioSessionDidActivate with the AVAudioSession from the CXProvider
    2. Enable audio: RTCAudioSession.sharedInstance().isAudioEnabled = true
  3. On your CXProvider delegate's provider(CXProvider, didDeactivate: AVAudioSession) call RTCAudioSession.sharedInstance().audioSessionDidDeactivate with the AVAudioSession from the CXProvider

WebRTC and CallKit talk from 2016:



Download Details:

Author: Stasel
Source Code: 
License: Apache-2.0 license

#swift #ios #webrtc 

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WebRTC-iOS: A Simple Native WebRTC Demo iOS App using Swift
Autumn  Blick

Autumn Blick


How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

  • Performance: It delivers optimal performance.
  • Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
  • UI design: React Native enables you to design simple and responsive UI for your mobile app.
  • 3rd party plugins: This framework supports 3rd party plugins.
  • Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

  • Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
  • Near-native user experience: React Native provides several native components, and these are platform agnostic.
  • The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

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Fredy  Larson

Fredy Larson


How long does it take to develop/build an app?

With more of us using smartphones, the popularity of mobile applications has exploded. In the digital era, the number of people looking for products and services online is growing rapidly. Smartphone owners look for mobile applications that give them quick access to companies’ products and services. As a result, mobile apps provide customers with a lot of benefits in just one device.

Likewise, companies use mobile apps to increase customer loyalty and improve their services. Mobile Developers are in high demand as companies use apps not only to create brand awareness but also to gather information. For that reason, mobile apps are used as tools to collect valuable data from customers to help companies improve their offer.

There are many types of mobile applications, each with its own advantages. For example, native apps perform better, while web apps don’t need to be customized for the platform or operating system (OS). Likewise, hybrid apps provide users with comfortable user experience. However, you may be wondering how long it takes to develop an app.

To give you an idea of how long the app development process takes, here’s a short guide.

App Idea & Research


_Average time spent: two to five weeks _

This is the initial stage and a crucial step in setting the project in the right direction. In this stage, you brainstorm ideas and select the best one. Apart from that, you’ll need to do some research to see if your idea is viable. Remember that coming up with an idea is easy; the hard part is to make it a reality.

All your ideas may seem viable, but you still have to run some tests to keep it as real as possible. For that reason, when Web Developers are building a web app, they analyze the available ideas to see which one is the best match for the targeted audience.

Targeting the right audience is crucial when you are developing an app. It saves time when shaping the app in the right direction as you have a clear set of objectives. Likewise, analyzing how the app affects the market is essential. During the research process, App Developers must gather information about potential competitors and threats. This helps the app owners develop strategies to tackle difficulties that come up after the launch.

The research process can take several weeks, but it determines how successful your app can be. For that reason, you must take your time to know all the weaknesses and strengths of the competitors, possible app strategies, and targeted audience.

The outcomes of this stage are app prototypes and the minimum feasible product.

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