No Voice Communication when call is streaming using CallKit - ios

Question

I was trying to make a call from extension 100(Linphone App) to 102(My application). The extension 102 has shown the incoming call screen and then clicked accept button and then, extension 100 starts to talk to extension 102 but extension 102 unable to hear anything from 100 and also extension 100 unable to hear from 102 as well.
I think the problem because of app. But i don't know what is wrong with my application.
These functions i declared in appdelegate file in order to handle incoming call
let callKitManager = CallKitCallInit(uuid: UUID(), handle: "")
lazy var providerDelegate: ProviderDelegate = ProviderDelegate(callKitManager: self.callKitManager)
func displayIncomingCall(uuid: UUID, handle: String, completion: ((NSError?) -> Void)?) {
providerDelegate.reportIncomingCall(uuid: uuid, handle: handle, completion: completion)
}
This is ProviderDelegate file
extension ProviderDelegate: CXProviderDelegate {
func providerDidReset(_ provider: CXProvider) {
print("Stop Audio ==STOP-AUDIO==")
for call in callKitManager.calls {
call.end(uuid: UUID())
}
callKitManager.removeAllCalls()
}
func provider(_ provider: CXProvider, perform action: CXAnswerCallAction) {
guard let call = callKitManager.callWithUUID(uuid: action.callUUID) else {
action.fail()
return
}
configureAudioSession()
call.answer()
action.fulfill()
}
func provider(_ provider: CXProvider, perform action: CXEndCallAction) {
guard let call = callKitManager.callWithUUID(uuid: action.callUUID) else {
action.fail()
return
}
print("Stop audio ==STOP-AUDIO==")
configureAudioSession()
call.end(uuid: action.callUUID)
action.fulfill()
callKitManager.remove(call: call)
}
func provider(_ provider: CXProvider, didActivate audioSession: AVAudioSession) {
print("Starting audio ==STARTING-AUDIO==")
}
func provider(_ provider: CXProvider, didDeactivate audioSession: AVAudioSession) {
print("Received \(#function)")
}
func configureAudioSession() {
let session = AVAudioSession.sharedInstance()
do {
try? session.setCategory(AVAudioSessionCategoryPlayAndRecord)
try? session.setMode(AVAudioSessionModeVoiceChat)
try? session.setPreferredSampleRate(44100.0)
try? session.setPreferredIOBufferDuration(0.005)
try? session.setActive(true)
}
}
}
class ProviderDelegate: NSObject {
fileprivate let callKitManager: CallKitCallInit
fileprivate let provider: CXProvider
init(callKitManager: CallKitCallInit) {
self.callKitManager = callKitManager
provider = CXProvider(configuration: type(of: self).providerConfiguration)
super.init()
provider.setDelegate(self, queue: nil)
}
static var providerConfiguration: CXProviderConfiguration {
let providerConfiguration = CXProviderConfiguration(localizedName: "vKclub")
providerConfiguration.supportsVideo = false
providerConfiguration.maximumCallsPerCallGroup = 1
providerConfiguration.supportedHandleTypes = [.phoneNumber]
return providerConfiguration
}
func reportIncomingCall(uuid: UUID, handle: String, hasVideo: Bool = false, completion: ((NSError?) -> Void)?) {
print("This is UUID === ", uuid)
configureAudioSession()
let update = CXCallUpdate()
update.remoteHandle = CXHandle(type: .phoneNumber, value: handle)
update.hasVideo = hasVideo
provider.reportNewIncomingCall(with: uuid, update: update) { error in
if error == nil {
// 3.
self.configureAudioSession()
let call = CallKitCallInit(uuid: uuid, handle: handle)
self.callKitManager.add(call: call)
lastCallUUID = uuid
print("UUID === ", uuid)
} else {
}
// 4.
completion?(error as NSError?)
}
}
}