Call not initiative - Matrix sdk

[meenakshisundaramnatarajan]

Hi,
I've created a new demo project within myself. I included the 'MatrixSDK' in my pod, and then I implemented the call functionality. Everything seems to be set up correctly. However, when I tried making a call from iOS to a web application, the call wasn't answered. Below, I've shared my code. Could you please review it and let me know your thoughts?

//
// ViewController.swift
// DemoAudiocall
//
// Created by Sundar-63336 on 06/07/24.
//

import UIKit
import MatrixSDK

class ViewController: UIViewController {

var mxSession: MXSession!
var call: MXCall?
var roomId: String?

@IBOutlet weak var audiobtn: UIButton!

override func viewDidLoad() {
    super.viewDidLoad()
    self.initialSetup()
}

func initialSetup() {
    let credentials = MXCredentials(homeServer: "https://matrix.org", userId: "@dineshkumar.e:matrix.org", accessToken: "syt_ZGluZXNoa3VtYXIuZQ_UpdiCiOwMNBCIvTXIEPs_16eMAS")
    
    mxSession = MXSession(matrixRestClient: MXRestClient(credentials: credentials))
    
    mxSession.start { [weak self] response in
        guard let self = self else { return }
        
        switch response {
        case .success:
            print("Matrix session started successfully")
            self.enableCallSupport()
        case .failure(let error):
            print("Failed to start Matrix session: \(error)")
        }
    }
}

func enableCallSupport() {
    mxSession.enableVoIP(with: self)
    if let callManager = mxSession.callManager {
        print("Call manager initialized successfully")
    } else {
        print("Failed to initialize call manager")
    }
}

func initializeCallManager(with userId: String) {
    guard let callManager = mxSession.callManager else {
        print("Call manager is not initialized")
        return
    }
    
    if let roomId = roomId {
        // Use the existing room if it's already created
        placeCall(in: roomId, to: userId)
    } else {
        // Otherwise, create a new room and then place the call
        createRoomAndInviteUser(userId: userId) { [weak self] room in
            guard let self = self, let room = room else {
                print("Failed to create or find the room")
                return
            }
            
            self.roomId = room.roomId // Store the room ID for future use
            self.placeCall(in: room.roomId, to: userId)
        }
    }
}

func createRoomAndInviteUser(userId: String, completion: @escaping (MXRoom?) -> Void) {
       let roomCreationParameters = MXRoomCreationParameters()
       roomCreationParameters.inviteArray = [userId]
       
       mxSession.createRoom(parameters: roomCreationParameters) { response in
           switch response {
           case .success(let room):
               print("Room created successfully")
               completion(room)
           case .failure(let error):
               print("Failed to create room: \(error.localizedDescription)")
               completion(nil)
           }
       }
   }

func placeCall(in roomId: String, to userId: String) {
    guard let callManager = mxSession.callManager else {
        print("Call manager is not initialized")
        return
    }
    
    let isVideoCall = false
    
    callManager.placeCall(inRoom: roomId, withVideo: isVideoCall, success: { [weak self] call in
        guard let self = self else { return }
        
        self.call = call
        self.setupCallDelegate()
        print("Call started successfully")
        
    }) { error in
        if let error = error {
            print("Error placing call: \(error.localizedDescription)")
        } else {
            print("Error placing call: unknown error")
        }
    }
}

@IBAction func audiobtnTapped(_ sender: Any) {
    let userIdToCall = "@meenakshisundaram:matrix.org"
    self.initializeCallManager(with: userIdToCall)
}

func setupCallDelegate() {
    call?.delegate = self
}

}

extension ViewController: MXCallDelegate,MXCallStack {
func createCall() -> (any MXCallStackCall)? {
guard let callManager = mxSession.callManager else {
print("Call manager is not initialized")
return nil
}

// let roomId = "!ijZKIzpnHteGBNJXXm:matrix.org"
let roomId = roomId ?? "Nil"
let isVideoCall = false

    var createdCall: MXCallStackCall?
    
    callManager.placeCall(inRoom: roomId, withVideo: isVideoCall, success: { (call) in
        createdCall = call as? any MXCallStackCall
        self.call = call
        self.setupCallDelegate()
        print("Call created successfully")
    }) { (error) in
        print("Error creating call: \(error?.localizedDescription ?? "Unknown error")")
    }
    
    return createdCall
}

func call(_ call: MXCall, stateDidChange state: MXCallState, reason event: MXEvent?) {
    switch state {
    case .connecting:
        print("Connecting...")
    case .connected:
        print("Call connected")
        // Handle UI updates or start audio streaming
    case .ringing:
        print("Ringing...")
    case .ended:
        print("Call ended")
        // Handle UI updates or cleanup
    default:
        break
    }
}

func call(_ call: MXCall!, didEncounterError error: Error!) {
    print("Call error: \(error.localizedDescription)")
}

}