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capacitor-plugin-callkit-voip

Install

  1. Install plugin
npm i capacitor-plugin-callkit-voip
ionic cap sync
  1. Xcode Project > Capabilities pane. Select the checkbox for Voice over IP, as shown in Image

  1. Register certificate on developer.apple.com/certificates

  1. Download the certificate and open it to import it into the Keychain Access app.

  2. Export certificates as shown bellow

  1. Now, navigate to the folder where you exported this file and execute following command:
openssl pkcs12 -in YOUR_CERTIFICATES.p12 -out app.pem -nodes -clcerts
  1. You will receive app.pem certificate file that can be used to send VOIP notification (you can use my script bellow)

Usage

To make this plugin work, you need to call .register() method and then you can use API bellow.

import {CallKitVoip} from "capacitor-plugin-callkit-voip"


async function registerCallKit(){

  // Register plugin of VOIP notifications 
    await CallKitVoip.register(); // can be used with `.then()`
    console.log("Push notification has been registered")
  
    // Voip Token has been generated 
    CallKitVoip.addListener("registration", (token:CallToken) =>
      console.log(`VOIP token has been received ${token.value}`)
    );
  
    // Notify Incoming Call Accepted
    CallKitVoip.addListener("callAnswered", (data:CallData) => 
      console.log(`Call has been received from ${call.name} (call ID: ${data.id}) (call Type: ${data.media}) (call duration: ${data.duration})`)
    );

    // Notify Call Ended
    CallKitVoip.addListener("callEnded", (data:CallData) =>
      console.log(`Call has been ended ${call.name} (call ID: ${data.id}) (call Type: ${data.media}) (call duration: ${data.duration})`)
    );

    // Notify Call Started
    CallKitVoip.addListener("callStarted", (data:CallData) =>
      console.log(`Call has been started with ${call.name} (call ID: ${data.id}) (call Type: ${data.media}) (call duration: ${data.duration})`)
     );
  
}

Once the plugin is installed, the only thing that you need to do is to push a VOIP notification with the following data payload structure:

{
    "name"         : "Display Name",
    "id"           : "Unique Call ID",
    "media"        : "Call Type: audio or video",
    "duration"     : "Call duration"
}

You can use my script (bellow) to test it out: ./sendVoip.sh <media> <id> <name> <duration> <token>

sendVoip.sh:

#!/bin/bash

function main {
    media=${1:-"audio"}
    id=${2:?"Caller ID should be specified"}
    name=${3:-"Unknown"}
    duration=${4:-0}
    token=${5:?"Enter device token that you received on register listener"}

    curl -v \
    -d "{\"aps\":{\"alert\":\"Incoming call\", \"content-available\":\"1\"}, \"media\": \"${media}\", \"id\": \"${id}\", \"name\": \"${name}\", \"duration\": \"${duration}\", \"token\": \"${token}\"}" \
    -H "apns-topic: <YOUR_BUNDLE_ID>.voip" \
    -H "apns-push-type: voip" \
    -H "apns-priority: 10" \
    --http2 \
    --cert app.pem \
"https://api.development.push.apple.com/3/device/${token}"
}

main $@

Pay attention:

  • replace <YOUR_BUNDLE_ID> with your app bundle
  • ensure that you are using correct voip certificate (specified in --cert app.pem)
  • if you'll go to production version, you will need to do request to api.push.apple.com/3/device/${token} instead of api.development.push.apple.com/3/device/${token}, otherwise you will receive BadDeviceToken issue

If you will have some complication, feel free to write me email at [email protected]

API

register()

Register your device to receive VOIP push notifications. After registration it will call 'registration' listener (bellow) that returns VOIP token.

import {CallKitVoip} from "capacitor-plugin-callkit-voip"
//...
await CallKitVoip.register();
// or
CallKitVoip.register().then(() => {
    // Do something after registration
});

Returns: void

addListener("registration", handler)

Adds listener on registration. When device will be registered to receiving VOIP push notifications, listenerFunc will be called.

As usually, it's called after .register() function

import { CallKitVoip, CallToken } from "capacitor-plugin-callkit-voip"
//...
CallKitVoip.addListener("registration", (token:CallToken) => {
    // do something with token 
    console.log(`VOIP token has been received ${token.value}`)
});
Param Type
eventName "registration"
listenerFunc (data: CallToken) => void

Returns: any

addListener("callAnswered", handler)

Adds listener to handle when user answers on call.

import { CallKitVoip, CallData } from "capacitor-plugin-callkit-voip"
//...
CallKitVoip.addListener("callAnswered", (data:CallData) => {
  // handle call (e.g. redirect it to specific page with call)
  console.log(`Call has been received from ${call.name} (call ID: ${data.id}) (call Type: ${data.media}) (call duration: ${data.duration})`)
});
Param Type
eventName "callAnswered"
listenerFunc (call: CallData) => void

Returns: void

addListener("callStarted", handler)

Adds listener to handle call starting, you can handle it directly in your app

import { CallKitVoip, CallData } from "capacitor-plugin-callkit-voip"
//...
CallKitVoip.addListener("callAnswered", (data:CallData) => {
  // handle call (e.g. redirect it to specific page with call)
  console.log(`Call has been received from ${call.name} (call ID: ${data.id}) (call Type: ${data.media}) (call duration: ${data.duration})`)
});
Param Type
eventName "callStarted"
listenerFunc (call: CallData) => void

Returns: any

addListener("callEnded", handler)

Adds listener to handle end call, you can handle it directly in your app

import { CallKitVoip, CallData } from "capacitor-plugin-callkit-voip"
//...
CallKitVoip.addListener("callEnded", (data:CallData) => {
        console.log(`Call has been ended ${call.name} (call ID: ${data.id}) (call Type: ${data.media}) (call duration: ${data.duration})`)
});
Param Type
eventName "callStarted"
listenerFunc (call: CallData) => void

Returns: any

Interfaces

CallToken

Prop Type
token {value: string}

PluginListenerHandle

Prop Type
remove () => any

CallData

Prop Type
id string
media string
name string
duration string