fix call kit UI audio nor working

Session/Calls/Call Management/SessionCallManager+CXProvider.swift

@@ -58,5 +58,19 @@ extension SessionCallManager: CXProviderDelegate {
     public func provider(_ provider: CXProvider, timedOutPerforming action: CXAction) {
         // TODO: handle timeout
     }
+    
+    public func provider(_ provider: CXProvider, didActivate audioSession: AVAudioSession) {
+        print("[CallKit] Audio session did activate.")
+        AssertIsOnMainThread()
+        guard let call = self.currentCall else { return }
+        call.webRTCSession.audioSessionDidActivate(audioSession)
+    }
+    
+    public func provider(_ provider: CXProvider, didDeactivate audioSession: AVAudioSession) {
+        print("[CallKit] Audio session did deactivate.")
+        AssertIsOnMainThread()
+        guard let call = self.currentCall else { return }
+        call.webRTCSession.audioSessionDidDeactivate(audioSession)
+    }
 }
 

SessionMessagingKit/Calls/WebRTCSession.swift

@@ -94,6 +94,8 @@ public final class WebRTCSession : NSObject, RTCPeerConnectionDelegate {
     public static var current: WebRTCSession?
     
     public init(for contactSessionID: String, with uuid: String) {
+        RTCAudioSession.sharedInstance().useManualAudio = true
+        RTCAudioSession.sharedInstance().isAudioEnabled = false
         self.contactSessionID = contactSessionID
         self.uuid = uuid
         super.init()
@@ -259,7 +261,7 @@ public final class WebRTCSession : NSObject, RTCPeerConnectionDelegate {
         print("[Calls] ICE connection state changed to: \(state).")
         if state == .connected {
             delegate?.webRTCIsConnected()
-//            configureAudioSession()
+            configureAudioSession()
         }
     }
     
@@ -297,6 +299,17 @@ extension WebRTCSession {
         audioSession.unlockForConfiguration()
     }
     
+    public func audioSessionDidActivate(_ audioSession: AVAudioSession) {
+        RTCAudioSession.sharedInstance().audioSessionDidActivate(audioSession)
+        RTCAudioSession.sharedInstance().isAudioEnabled = true
+        configureAudioSession()
+    }
+    
+    public func audioSessionDidDeactivate(_ audioSession: AVAudioSession) {
+        RTCAudioSession.sharedInstance().audioSessionDidDeactivate(audioSession)
+        RTCAudioSession.sharedInstance().isAudioEnabled = false
+    }
+    
     public func mute() {
         audioTrack.isEnabled = false
     }