question

I just tested it in my Unity Project, both OnNetworkLeft and OnNetworkJoined are successfully invoked. Did you forget to listen for these events in your code, like this:

var playFabMultiplayerManager = PlayFabMultiplayerManager.Get();

// Listen for this event to know when the SDK has joined the network and can start sending messages.
playFabMultiplayerManager.OnNetworkJoined += OnNetworkJoined;

// Listen for this event to know when the SDK has left the network.
playFabMultiplayerManager.OnNetworkLeft += OnNetworkLeft;

If that’s not your case, please provide the code snippet of yours for us to investigate further ( please also specify the version of Party SDK, Unity & PlayFab SDK you’re using).

BTW, I think you may also this tutorial helpful:

https://docs.microsoft.com/en-us/gaming/playfab/features/multiplayer/networking/party-unity-plugin-quickstart

And, you can find helps for GDK issues from the XBOX developer forum.

Hi Citrus,

Thanks for your reply, I'm still having problems with this, upgraded to latest PlayFab SDK.

I can reproduce the problem using this simple code in a test project, running in the editor.

PlayFab SDK 2.97.201014
Unity 2019.4.9f1 + Unity GameCore Scarlett extensions


public class PlayFabLogin : MonoBehaviour
{
    PlayFabMultiplayerManager m_playFabMultiplayerManager;

    public void Start()
    {		 		
	#if !UNITY_EDITOR
	Unity.GameCore.SDK.XGameRuntimeInitialize();
	#endif					 		 

        var request = new LoginWithCustomIDRequest { CustomId = "GettingStartedGuide", C        reateAccount = true};
        PlayFabClientAPI.LoginWithCustomID(request, OnLoginSuccess, OnLoginFailure);

 
	m_playFabMultiplayerManager = PlayFabMultiplayerManager.Get();	
	m_playFabMultiplayerManager.LogLevel = PlayFabMultiplayerManager.LogLevelType.Verbose;
			 
	// Callbacks
	m_playFabMultiplayerManager.OnNetworkJoined += OnNetworkJoined;
	m_playFabMultiplayerManager.OnError += OnPlayFabErrorCallback;
	m_playFabMultiplayerManager.OnNetworkLeft += OnNetworkLeft;
    }
 		
    public void Update()
    {
#if !UNITY_EDITOR
        Unity.GameCore.SDK.XTaskQueueDispatch();
#endif			 
    }

    private void OnLoginSuccess(LoginResult result)
    {
        Debug.Log("---------------OnLoginSuccess")
	m_playFabMultiplayerManager.CreateAndJoinNetwork(); 		 
    }

    private void OnLoginFailure(PlayFabError error)
    {         
        Debug.LogError("---------------OnLoginFailure");
        Debug.LogError(error.GenerateErrorReport());
    }

    private void OnNetworkJoined(object sender, string networkId)
    {
	Debug.LogError("---------------OnNetworkJoined");
	StartCoroutine(WaitThenLeave());
    }

    IEnumerator WaitThenLeave()
    {
	yield return new WaitForSeconds(2.5f); 		
	m_playFabMultiplayerManager.LeaveNetwork();
    }

    void OnNetworkLeft(object sender, string networkId)
    {
	Debug.LogError("---------------OnNetworkLeft");
    }

    private void OnPlayFabErrorCallback(object sender, PlayFabMultiplayerManagerErrorArgs args)
    {
	Debug.LogWarning("---------------OnPlayFabErrorCallback");
    }
}

OnNetworkLeft is never called.

The problem seems to be in PlayFabMultiPlayerManager.cs in this section, after calling LeaveNetwork:

line 1840:
case PARTY_STATE_CHANGE_TYPE.PARTY_STATE_CHANGE_TYPE_LEAVE_NETWORK_COMPLETED:
{
    var stateChangeConverted =....     
    if (InternalCheckStateChangeSucceededOrLogErrorIfFailed(stateChangeC...             
        
    ....  

The value of stateChangeConverted.result is :PARTY_STATE_CHANGE_RESULT_LEAVE_NETWORK_CALLED

but InternalCheckStateChangeSucceededOrLogErrorIfFailed only returns true if the result is

PARTY_STATE_CHANGE_RESULT.PARTY_STATE_CHANGE_RESULT_SUCCEEDED

So the callback never occurs.

Any ideas what is causing this? Many thanks - Bob.