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A collaboration application built with the Twilio Video iOS SDK, MessageKit, & WebSockets

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Twilio Video iOS App

This app is a sample video conferencing app that uses the Twilio Programmable Video SDK. The open source app can be easily configured by developers to try out real-time video and audio features. Converting Objective-C code to Swift is in progress.

video-app-screenshots websocket-chat-screenshots

Features

  • Video conferencing with real-time video and audio
  • Realtime chat over websockets
  • Enable/disable camera
  • Mute/unmute mic
  • Switch between front and back camera
  • Dominant speaker indicator
  • Network quality indicator

Requirements

iOS Deployment Target Xcode Version Swift Language Version
11.0 11.3 Swift 5

Getting Started

Deploy Twilio Access Token Server

NOTE: The Twilio Function that provides access tokens via a passcode should NOT be used in a production environment. This token server supports seamlessly getting started with the collaboration app, and while convenient, the passcode is not secure enough for production environments. You should use an authentication provider to securely provide access tokens to your client applications. You can find more information about Programmable Video access tokens in this tutorial.

The app requires a back-end to generate Twilio access tokens. Follow the instructions below to deploy a serverless back-end using Twilio Functions.

  1. Install Twilio CLI.
  2. Run twilio login and follow prompts to login to your Twilio account.
  3. Run twilio plugins:install @twilio-labs/plugin-rtc.
  4. Run twilio rtc:apps:video:deploy --authentication passcode.
  5. The passcode that is output will be used later to sign in to the app.

The passcode will expire after one week. To generate a new passcode, run twilio rtc:apps:video:deploy --authentication passcode --override.

Troubleshooting The Twilio CLI

If any errors occur after running a Twilio CLI RTC Plugin command, then try the following steps.

  1. Run twilio plugins:update to update the rtc plugin to the latest version.
  2. Run twilio rtc:apps:video:delete to delete any existing authentication servers.
  3. Run twilio rtc:apps:video:deploy --authentication passcode to deploy a new authentication server.

Install Dependencies

  1. Install CocoaPods.
  2. Run pod install.

Configure Signing

  1. Open VideoApp.xcworkspace with Xcode.
  2. In Xcode navigate to the Signing & Capabilities pane of the project editor for the Video-Community target.
  3. Change Team to your team.
  4. Change Bundle identifier to something unique.

Run

  1. In Xcode use the Scheme menu to select the Video-Community scheme.
  2. In Xcode use the Scheme menu to select a destination. Cameras do not work in the simulator so select a device for best results.
  3. Run ⌘R the app.

The Video-Twilio and Video-Internal schemes use authentication that is only available to Twilio employees in order to make internal testing easier.

Start Video Conference

For each device:

  1. Run the app.
  2. Enter any unique name in the Your name field.
  3. Enter the passcode from Deploy Twilio Access Token Server in the Passcode field.
  4. Tap Sign in.
  5. Enter a room name.
  6. Tap Join.

The passcode will expire after one week. Follow the steps below to sign in with a new passcode.

  1. Generate a new passcode.
  2. In the app tap Settings > Sign Out.
  3. Repeat the steps above.

Chat over Websockets

You can subscribe to the websocket server over Go Chat Websocket The UI for the chat interface is powered by MessageKit

Once you login with the passcode and join a room you will see a floating chat icon to the right

Tests

Unit Tests

For unit tests use:

UI Tests

UI tests require credentials that are only available to Twilio employees.

Known Issues

  1. Running tests ⌘U will crash if the app was run ⌘R on the device previously. See issue #12 for a workaround and more details.

Related

For Twilions

Twilio employees should follow these instructions for internal testing.

License

Apache 2.0 license. See the LICENSE file for details.

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A collaboration application built with the Twilio Video iOS SDK, MessageKit, & WebSockets

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