iOS - Integrating the SDK

The following sections describe installation and setup of the Voice SDK:

Requirements
Create an iOS project
Integrate the Voice SDK
Enable VoIP capabilities
Build and run
Push notification setup

Requirements

To use the Voice SDK you need:

Xcode (14.3.1 or later)
Swift (5.8.1 or later)
iOS (15.5 or later)
Supported architectures (arm64, x86_64)

Create an iOS project

To get started, create an iOS project using the following steps:

Open Xcode and click Create a new Xcode project
Select Single View App as the template and click Next
Choose the folder where to store the project and click Create
Go to the TARGETS > Project Name > General > Signing menu and select Automatically manage signing
Click Enable Automatic on the displayed pop-up window

Integrate the Voice SDK

To integrate the Voice SDK:

Go to SDK Releases and download the latest version of the Voice SDK for iOS.
Unzip the downloaded Voice SDK package.

You should have the following contents from the extracted .zip file:

Copy the Wavecell.xcframework bundle to the Frameworks folder as shown:

Go to the menu at TARGETS > Project Name > General > Frameworks, Libraries, and Embedded Content:

Drag the Wavecell.xcframework bundle from the Frameworks folder into the Frameworks, Libraries, and Embedded Content section.

Enable VoIP capabilities

To enable VoIP capabilities:

Go to TARGETS > Project Name > Signing & Capabilities and then add Background Modes.

You can also enable Audio, AirPlay Voice over IP and other attributes while in this directory.

Go to TARGETS > Project Name > Info and add your privacy description for push notification usage.

Note: This step is only required for receiving incoming calls.

Go to TARGETS > Project Name > Info and add your privacy description for microphone usage.

The NSMicrophoneUsageDescription property describes the reason your app needs to access the phone microphone. When the system prompts the user to allow access, this string is displayed as part of the alert. Therefore, it cannot be left empty.

Build and run

After you have completed the previous integration tasks, you can verify if your app can invoke functions from the Wavecell.xcframework by doing the following:

Modify AppDelegate.swift by adding the following lines:
```
import Wavecell
print("\(VoiceSDK.shared.version())")
```
Build (Cmd+B) and Run (Cmd+R) the app project
If successful, your Xcode console displays the following type of message:
```
0.1.0b50-r629e3e4
```

Push notification setup

The 8x8 backend solution includes the notification server. The notification server establishes secure connection with APNS in order to send push notifications to your application.

There are two types of secure connections:

The backend supports both types of secure connections.

Certificate-based

For the certificate-based type of connection, generate VoIP Service Certificate
with your Apple developer account:

When the certificate is ready, click Download and save it to your local drive (voip_services.cer file).

Open the voip_services.cer file with the Keychain Access app on your computer.

Select the login option if you are asked which keychain to add the certificate to.
In the Keychain Access app, select the Certificates option in the bottom section of the left sidebar.

You will now need to find the certificate you have created.
Export your Certificate as a .p12 file.

Convert the .p12 file to a .pem file using the Terminal openssl command:

openssl pkcs12 -in PATH_TO_YOUR_P12 -nokeys -out cert.pem -nodes
openssl pkcs12 -in PATH_TO_YOUR_P12 -nocerts -out key.pem -nodes
openssl rsa -in key.pem -out key.pem
cat cert.pem key.pem > apns-voip-services.pem

Token-based

For the token-base connection you will need to generate a key in your Apple developer
account with Apple Push Notification Service enabled:

Once the key is ready click Download and save it to your hard drive (AuthKey_<Key ID>.p8 file
Register the Key ID and Key (.p8 file) in your Wavecell developer account.