Merged master

Assets/Mirror/Components/NetworkTransformReliable/NetworkTransformReliable.cs

@@ -57,12 +57,6 @@ void Update()
 
         void UpdateServer()
         {
-            // set dirty to trigger OnSerialize. either always, or only if changed.
-            // technically snapshot interpolation requires constant sending.
-            // however, with reliable it should be fine without constant sends.
-            if (!onlySyncOnChange || Changed(Construct()))
-                SetDirty();
-
             // apply buffered snapshots IF client authority
             // -> in server authority, server moves the object
             //    so no need to apply any snapshots there.
@@ -91,6 +85,14 @@ void UpdateServer()
                     Apply(computed);
                 }
             }
+
+            // set dirty to trigger OnSerialize. either always, or only if changed.
+            // technically snapshot interpolation requires constant sending.
+            // however, with reliable it should be fine without constant sends.
+            //
+            // detect changes _after_ all changes were applied above.
+            if (!onlySyncOnChange || Changed(Construct()))
+                SetDirty();
         }
 
         void UpdateClient()

Assets/Mirror/Core/HostMode.cs

@@ -1,6 +1,8 @@
 // host mode related helper functions.
 // usually they set up both server & client.
 // it's cleaner to keep them in one place, instead of only in server / client.
+using System;
+
 namespace Mirror
 {
     public static class HostMode
@@ -39,19 +41,8 @@ public static void InvokeOnConnected()
             ((LocalConnectionToServer)NetworkClient.connection).QueueConnectedEvent();
         }
 
-        // calls OnStartClient for all SERVER objects in host mode once.
+        // DEPRECATED 2023-01-28
-        // client doesn't get spawn messages for those, so need to call manually.
+        [Obsolete("ActivateHostScene did nothing, since identities all had .isClient set in NetworkServer.SpawnObjects.")]
-        // public because NetworkServer.ActivateHostScene was public before too.
+        public static void ActivateHostScene() {}
-        public static void ActivateHostScene()
-        {
-            foreach (NetworkIdentity identity in NetworkServer.spawned.Values)
-            {
-                if (!identity.isClient)
-                {
-                    // Debug.Log($"ActivateHostScene {identity.netId} {identity}");
-                    NetworkClient.CheckForStartClient(identity);
-                }
-            }
-        }
     }
 }

Assets/Mirror/Core/NetworkBehaviour.cs

@@ -598,7 +598,7 @@ public static bool SyncVarGameObjectEqual(GameObject newGameObject, uint netIdFi
             uint newNetId = 0;
             if (newGameObject != null)
             {
-                if (newGameObject.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+                if (newGameObject.TryGetComponent(out NetworkIdentity identity))
                 {
                     newNetId = identity.netId;
                     if (newNetId == 0)
@@ -621,7 +621,7 @@ protected void SetSyncVarGameObject(GameObject newGameObject, ref GameObject gam
             uint newNetId = 0;
             if (newGameObject != null)
             {
-                if (newGameObject.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+                if (newGameObject.TryGetComponent(out NetworkIdentity identity))
                 {
                     newNetId = identity.netId;
                     if (newNetId == 0)

Assets/Mirror/Core/NetworkClient.cs

@@ -383,7 +383,13 @@ internal static void OnTransportDisconnected()
 
             // Raise the event before changing ConnectState
             // because 'active' depends on this during shutdown
-            if (connection != null) OnDisconnectedEvent?.Invoke();
+            //
+            // previously OnDisconnected was only invoked if connection != null.
+            // however, if DNS resolve fails in Transport.Connect(),
+            // OnDisconnected would never be called because 'connection' is only
+            // created after the Transport.Connect() call.
+            // fixes: https://github.com/MirrorNetworking/Mirror/issues/3365
+            OnDisconnectedEvent?.Invoke();
 
             connectState = ConnectState.Disconnected;
             ready = false;
@@ -572,7 +578,7 @@ public static void RegisterPrefab(GameObject prefab, uint newAssetId)
                 return;
             }
 
-            if (!prefab.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!prefab.TryGetComponent(out NetworkIdentity identity))
             {
                 Debug.LogError($"Could not register '{prefab.name}' since it contains no NetworkIdentity component");
                 return;
@@ -598,7 +604,7 @@ public static void RegisterPrefab(GameObject prefab)
                 return;
             }
 
-            if (!prefab.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!prefab.TryGetComponent(out NetworkIdentity identity))
             {
                 Debug.LogError($"Could not register '{prefab.name}' since it contains no NetworkIdentity component");
                 return;
@@ -634,7 +640,7 @@ public static void RegisterPrefab(GameObject prefab, SpawnDelegate spawnHandler,
                 return;
             }
 
-            if (!prefab.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!prefab.TryGetComponent(out NetworkIdentity identity))
             {
                 Debug.LogError($"Could not register handler for '{prefab.name}' since it contains no NetworkIdentity component");
                 return;
@@ -681,7 +687,7 @@ public static void RegisterPrefab(GameObject prefab, uint newAssetId, SpawnHandl
                 return;
             }
 
-            if (!prefab.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!prefab.TryGetComponent(out NetworkIdentity identity))
             {
                 Debug.LogError($"Could not register handler for '{prefab.name}' since it contains no NetworkIdentity component");
                 return;
@@ -747,7 +753,7 @@ public static void RegisterPrefab(GameObject prefab, SpawnHandlerDelegate spawnH
                 return;
             }
 
-            if (!prefab.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!prefab.TryGetComponent(out NetworkIdentity identity))
             {
                 Debug.LogError($"Could not register handler for '{prefab.name}' since it contains no NetworkIdentity component");
                 return;
@@ -811,7 +817,7 @@ public static void UnregisterPrefab(GameObject prefab)
                 return;
             }
 
-            if (!prefab.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!prefab.TryGetComponent(out NetworkIdentity identity))
             {
                 Debug.LogError($"Could not unregister '{prefab.name}' since it contains no NetworkIdentity component");
                 return;
@@ -1011,12 +1017,25 @@ internal static void ApplySpawnPayload(NetworkIdentity identity, SpawnMessage me
             identity.transform.localPosition = message.position;
             identity.transform.localRotation = message.rotation;
             identity.transform.localScale = message.scale;
+
+            // configure flags
+            // the below DeserializeClient call invokes SyncVarHooks.
+            // flags always need to be initialized before that.
+            // fixes: https://github.com/MirrorNetworking/Mirror/issues/3259
             identity.isOwned = message.isOwner;
             identity.netId = message.netId;
 
             if (message.isLocalPlayer)
                 InternalAddPlayer(identity);
 
+            // configure isClient/isLocalPlayer flags.
+            // => after InternalAddPlayer. can't initialize .isLocalPlayer
+            //    before InternalAddPlayer sets .localPlayer
+            // => before DeserializeClient, otherwise SyncVar hooks wouldn't
+            //    have isClient/isLocalPlayer set yet.
+            //    fixes: https://github.com/MirrorNetworking/Mirror/issues/3259
+            InitializeIdentityFlags(identity);
+
             // deserialize components if any payload
             // (Count is 0 if there were no components)
             if (message.payload.Count > 0)
@@ -1038,9 +1057,7 @@ internal static void ApplySpawnPayload(NetworkIdentity identity, SpawnMessage me
             // here immediately since there won't be another OnObjectSpawnFinished.
             if (isSpawnFinished)
             {
-                identity.NotifyAuthority();
+                InvokeIdentityCallbacks(identity);
-                CheckForStartClient(identity);
-                CheckForLocalPlayer(identity);
             }
         }
 
@@ -1097,7 +1114,7 @@ static NetworkIdentity SpawnPrefab(SpawnMessage message)
                     return null;
                 }
 
-                if (!obj.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+                if (!obj.TryGetComponent(out NetworkIdentity identity))
                 {
                     Debug.LogError($"Object Spawned by handler did not have a NetworkIdentity, Handler assetId '{message.assetId}'");
                     return null;
@@ -1193,9 +1210,7 @@ internal static void OnObjectSpawnFinished(ObjectSpawnFinishedMessage _)
                 // they are destroyed. for safety, let's double check here.
                 if (identity != null)
                 {
-                    identity.NotifyAuthority();
+                    BootstrapIdentity(identity);
-                    CheckForStartClient(identity);
-                    CheckForLocalPlayer(identity);
                 }
                 else Debug.LogWarning("Found null entry in NetworkClient.spawned. This is unexpected. Was the NetworkIdentity not destroyed properly?");
             }
@@ -1238,14 +1253,12 @@ internal static void OnHostClientSpawn(SpawnMessage message)
                 if (message.isLocalPlayer)
                     InternalAddPlayer(identity);
 
-                identity.isOwned = message.isOwner;
+                // set visibility before invoking OnStartClient etc. callbacks
-                identity.NotifyAuthority();
-                CheckForStartClient(identity);
-
                 if (aoi != null)
                     aoi.SetHostVisibility(identity, true);
 
-                CheckForLocalPlayer(identity);
+                identity.isOwned = message.isOwner;
+                BootstrapIdentity(identity);
             }
         }
 
@@ -1340,43 +1353,58 @@ internal static void ChangeOwner(NetworkIdentity identity, ChangeOwnerMessage me
             if (identity.isLocalPlayer)
             {
                 localPlayer = identity;
+                identity.connectionToServer = connection;
+                identity.OnStartLocalPlayer();
             }
             // identity's isLocalPlayer was set to false.
             // clear our static localPlayer IF (and only IF) it was that one before.
             else if (localPlayer == identity)
             {
                 localPlayer = null;
+                // TODO set .connectionToServer to null for old local player?
+                // since we set it in the above 'if' case too.
             }
-
-            // call OnStartLocalPlayer if it's the local player now.
-            CheckForLocalPlayer(identity);
         }
 
-        // OnStartClient used to initialize isClient / isLocalPlayer.
+        // set up NetworkIdentity flags on the client.
-        // it's cleaner to do this from NetworkClient.
+        // needs to be separate from invoking callbacks.
-        internal static void CheckForStartClient(NetworkIdentity identity)
+        // cleaner, and some places need to set flags first.
+        static void InitializeIdentityFlags(NetworkIdentity identity)
         {
-            // OnStartLocalPlayer is called after OnStartClient.
+            // initialize flags before invoking callbacks.
-            // but we want the flag to be set in OnStartClient already.
+            // this way isClient/isLocalPlayer is correct during callbacks.
-            identity.isLocalPlayer = localPlayer == identity;
+            // fixes: https://github.com/MirrorNetworking/Mirror/issues/3362
             identity.isClient = true;
-            identity.OnStartClient();
+            identity.isLocalPlayer = localPlayer == identity;
+
+            // .connectionToServer is only available for local players.
+            // set it here, before invoking any callbacks.
+            // this way it's available in _all_ callbacks.
+            if (identity.isLocalPlayer)
+                identity.connectionToServer = connection;
         }
 
-        internal static void CheckForLocalPlayer(NetworkIdentity identity)
+        // invoke NetworkIdentity callbacks on the client.
+        // needs to be separate from configuring flags.
+        // cleaner, and some places need to set flags first.
+        static void InvokeIdentityCallbacks(NetworkIdentity identity)
         {
-            if (identity == localPlayer)
+            // invoke OnStartAuthority
-            {
+            identity.NotifyAuthority();
-                // Set isLocalPlayer to true on this NetworkIdentity and trigger
-                // OnStartLocalPlayer in all scripts on the same GO
-                identity.connectionToServer = connection;
 
-                // isLocalPlayer is already set by CheckForStartPlayer.
+            // invoke OnStartClient
-                // however, let's simply move it out of OnStartLocalPlayer for now.
+            identity.OnStartClient();
-                identity.isLocalPlayer = true;
+
+            // invoke OnStartLocalPlayer
+            if (identity.isLocalPlayer)
                 identity.OnStartLocalPlayer();
-                // Debug.Log($"NetworkClient.OnOwnerMessage player:{identity.name}");
+        }
-            }
+
+        // configure flags & invoke callbacks
+        static void BootstrapIdentity(NetworkIdentity identity)
+        {
+            InitializeIdentityFlags(identity);
+            InvokeIdentityCallbacks(identity);
         }
 
         // broadcast ///////////////////////////////////////////////////////////
@@ -1473,13 +1501,10 @@ internal static void NetworkLateUpdate()
                 // also important for syncInterval=0 components like
                 // NetworkTransform, so they can sync on same interval as time
                 // snapshots _but_ not every single tick.
+                //
+                // Unity 2019 doesn't have Time.timeAsDouble yet
                 if (!Application.isPlaying ||
-#if !UNITY_2020_3_OR_NEWER
-                    // Unity 2019 doesn't have Time.timeAsDouble yet
                     AccurateInterval.Elapsed(NetworkTime.localTime, sendInterval, ref lastSendTime))
-#else
-                    AccurateInterval.Elapsed(Time.timeAsDouble, sendInterval, ref lastSendTime))
-#endif
                 {
                     Broadcast();
                 }

Assets/Mirror/Core/NetworkManager.cs

@@ -523,7 +523,6 @@ void FinishStartHost()
             SetupClient();
 
             networkAddress = "localhost";
-            HostMode.ActivateHostScene();
             RegisterClientMessages();
 
             // call OnConencted needs to be called AFTER RegisterClientMessages

Assets/Mirror/Core/NetworkServer.cs

@@ -821,7 +821,7 @@ public static void UnregisterHandler<T>()
 
         internal static bool GetNetworkIdentity(GameObject go, out NetworkIdentity identity)
         {
-            if (!go.TryGetComponent<NetworkIdentity>(out identity))
+            if (!go.TryGetComponent(out identity))
             {
                 Debug.LogError($"GameObject {go.name} doesn't have NetworkIdentity.");
                 return false;
@@ -898,7 +898,7 @@ public static bool AddPlayerForConnection(NetworkConnectionToClient conn, GameOb
         // on this playerControllerId for this connection, this will fail.
         public static bool AddPlayerForConnection(NetworkConnectionToClient conn, GameObject player)
         {
-            if (!player.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!player.TryGetComponent(out NetworkIdentity identity))
             {
                 Debug.LogWarning($"AddPlayer: playerGameObject has no NetworkIdentity. Please add a NetworkIdentity to {player}");
                 return false;
@@ -939,7 +939,7 @@ public static bool AddPlayerForConnection(NetworkConnectionToClient conn, GameOb
         // safely be used while changing scenes.
         public static bool ReplacePlayerForConnection(NetworkConnectionToClient conn, GameObject player, bool keepAuthority = false)
         {
-            if (!player.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!player.TryGetComponent(out NetworkIdentity identity))
             {
                 Debug.LogError($"ReplacePlayer: playerGameObject has no NetworkIdentity. Please add a NetworkIdentity to {player}");
                 return false;
@@ -1288,7 +1288,7 @@ public static bool SpawnObjects()
         // This is the same as calling NetworkIdentity.AssignClientAuthority on the spawned object.
         public static void Spawn(GameObject obj, GameObject ownerPlayer)
         {
-            if (!ownerPlayer.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!ownerPlayer.TryGetComponent(out NetworkIdentity identity))
             {
                 Debug.LogError("Player object has no NetworkIdentity");
                 return;
@@ -1351,7 +1351,7 @@ static void SpawnObject(GameObject obj, NetworkConnection ownerConnection)
                 return;
             }
 
-            if (!obj.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!obj.TryGetComponent(out NetworkIdentity identity))
             {
                 Debug.LogError($"SpawnObject {obj} has no NetworkIdentity. Please add a NetworkIdentity to {obj}", obj);
                 return;
@@ -1385,6 +1385,8 @@ static void SpawnObject(GameObject obj, NetworkConnection ownerConnection)
             if (!identity.isServer && identity.netId == 0)
             {
                 // configure NetworkIdentity
+                // this may be called in host mode, so we need to initialize
+                // isLocalPlayer/isClient flags too.
                 identity.isLocalPlayer = NetworkClient.localPlayer == identity;
                 identity.isClient = NetworkClient.active;
                 identity.isServer = true;

Assets/Mirror/Core/NetworkWriterExtensions.cs

@@ -239,7 +239,7 @@ public static void WriteTransform(this NetworkWriter writer, Transform value)
                 writer.WriteUInt(0);
                 return;
             }
-            if (value.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (value.TryGetComponent(out NetworkIdentity identity))
             {
                 writer.WriteUInt(identity.netId);
             }
@@ -259,7 +259,7 @@ public static void WriteGameObject(this NetworkWriter writer, GameObject value)
             }
 
             // warn if the GameObject doesn't have a NetworkIdentity,
-            if (!value.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (!value.TryGetComponent(out NetworkIdentity identity))
                 Debug.LogWarning($"NetworkWriter {value} has no NetworkIdentity");
 
             // serialize the correct amount of data in any case to make sure

Assets/Mirror/Core/NetworkWriterPool.cs

@@ -1,5 +1,4 @@
 // API consistent with Microsoft's ObjectPool<T>.
-using System;
 using System.Runtime.CompilerServices;
 
 namespace Mirror

Assets/Mirror/Examples/AdditiveLevels/Scripts/AdditiveLevelsNetworkManager.cs

@@ -72,7 +72,7 @@ IEnumerator LoadAdditive(string sceneName)
             isInTransition = true;
 
             // This will return immediately if already faded in
-            // e.g. by UnloadAdditive above or by default startup state
+            // e.g. by UnloadAdditive or by default startup state
             yield return fadeInOut.FadeIn();
 
             // host client is on server...don't load the additive scene again
@@ -91,6 +91,7 @@ IEnumerator LoadAdditive(string sceneName)
 
             OnClientSceneChanged();
 
+            // Reveal the new scene content.
             yield return fadeInOut.FadeOut();
         }
 
@@ -99,9 +100,10 @@ IEnumerator UnloadAdditive(string sceneName)
             isInTransition = true;
 
             // This will return immediately if already faded in
-            // e.g. by LoadAdditive above or by default startup state
+            // e.g. by LoadAdditive above or by default startup state.
             yield return fadeInOut.FadeIn();
 
+            // host client is on server...don't unload the additive scene here.
             if (mode == NetworkManagerMode.ClientOnly)
             {
                 yield return SceneManager.UnloadSceneAsync(sceneName);
@@ -115,8 +117,8 @@ IEnumerator UnloadAdditive(string sceneName)
             OnClientSceneChanged();
 
             // There is no call to FadeOut here on purpose.
-            // Expectation is that a LoadAdditive will follow
+            // Expectation is that a LoadAdditive or full scene change
-            // that will call FadeOut after that scene loads.
+            // will follow that will call FadeOut after that scene loads.
         }
 
         /// <summary>

Assets/Mirror/Examples/AdditiveLevels/Scripts/Portal.cs

@@ -46,7 +46,7 @@ void OnTriggerEnter(Collider other)
             //Debug.Log($"{System.DateTime.Now:HH:mm:ss:fff} Portal::OnTriggerEnter {gameObject.name} in {gameObject.scene.name}");
 
             // applies to host client on server and remote clients
-            if (other.TryGetComponent<PlayerController>(out PlayerController playerController))
+            if (other.TryGetComponent(out PlayerController playerController))
                 playerController.enabled = false;
 
             if (isServer)
@@ -56,7 +56,7 @@ void OnTriggerEnter(Collider other)
         [ServerCallback]
         IEnumerator SendPlayerToNewScene(GameObject player)
         {
-            if (player.TryGetComponent<NetworkIdentity>(out NetworkIdentity identity))
+            if (player.TryGetComponent(out NetworkIdentity identity))
             {
                 NetworkConnectionToClient conn = identity.connectionToClient;
                 if (conn == null) yield break;
@@ -83,7 +83,7 @@ IEnumerator SendPlayerToNewScene(GameObject player)
                 NetworkServer.AddPlayerForConnection(conn, player);
 
                 // host client would have been disabled by OnTriggerEnter above
-                if (NetworkClient.localPlayer != null && NetworkClient.localPlayer.TryGetComponent<PlayerController>(out PlayerController playerController))
+                if (NetworkClient.localPlayer != null && NetworkClient.localPlayer.TryGetComponent(out PlayerController playerController))
                     playerController.enabled = true;
             }
         }

Assets/Mirror/Examples/Tanks/Scripts/Tank.cs

@@ -28,6 +28,9 @@ void Update()
             // (SyncVar hook would only update on clients, not on server)
             healthBar.text = new string('-', health);
             
+            // take input from focused window only
+            if(!Application.isFocused) return; 
+
             // movement for local player
             if (isLocalPlayer)
             {

Assets/Mirror/Tests/Editor/NetworkReaderWriterTest.cs

@@ -21,7 +21,7 @@ public void TestIntReaderNotNull()
         public void TestAccessingCustomWriterAndReader()
         {
             NetworkWriter writer = new NetworkWriter();
-            writer.Write<int>(3);
+            writer.Write(3);
             NetworkReader reader = new NetworkReader(writer.ToArray());
             int copy = reader.Read<int>();
 

Assets/Mirror/Tests/Editor/NetworkServerTest.cs

@@ -839,28 +839,6 @@ public void SendCommand_RequiresAuthority()
             Assert.That(comp.called, Is.EqualTo(0));
         }
 
-        [Test]
-        public void ActivateHostSceneCallsOnStartClient()
-        {
-            // listen & connect
-            NetworkServer.Listen(1);
-            ConnectClientBlockingAuthenticatedAndReady(out _);
-
-            // spawn identity with a networkbehaviour.
-            // (needs to be in .spawned for ActivateHostScene)
-            CreateNetworkedAndSpawn(
-                out _, out NetworkIdentity serverIdentity, out OnStartClientTestNetworkBehaviour serverComp,
-                out _, out _, out _);
-
-            // ActivateHostScene calls OnStartClient for spawned objects where
-            // isClient is still false. set it to false first.
-            serverIdentity.isClient = false;
-            HostMode.ActivateHostScene();
-
-            // was OnStartClient called for all .spawned networkidentities?
-            Assert.That(serverComp.called, Is.EqualTo(1));
-        }
-
         [Test]
         public void SendToAll()
         {

Assets/Mirror/Transports/KCP/kcp2k/VERSION.txt

@@ -1,3 +1,11 @@
+V1.29 [2023-01-28]
+- fix: KcpServer.CreateServerSocket now handles NotSupportedException when setting DualMode
+  https://github.com/MirrorNetworking/Mirror/issues/3358
+
+V1.28 [2023-01-28]
+- fix: KcpClient.Connect now resolves hostname before creating peer
+  https://github.com/MirrorNetworking/Mirror/issues/3361
+
 V1.27 [2023-01-08]
 - KcpClient.Connect: invoke own events directly instead of going through peer,
   which calls our own events anyway

Assets/Mirror/Transports/KCP/kcp2k/highlevel/KcpClient.cs

@@ -60,6 +60,16 @@ public void Connect(string address, ushort port, KcpConfig config)
                 return;
             }
 
+            // resolve host name before creating peer.
+            // fixes: https://github.com/MirrorNetworking/Mirror/issues/3361
+            if (!Common.ResolveHostname(address, out IPAddress[] addresses))
+            {
+                // pass error to user callback. no need to log it manually.
+                OnError(ErrorCode.DnsResolve, $"Failed to resolve host: {address}");
+                OnDisconnected();
+                return;
+            }
+
             // create fresh peer for each new session
             peer = new KcpPeer(RawSend, OnAuthenticatedWrap, OnData, OnDisconnectedWrap, OnError, config);
 
@@ -83,15 +93,6 @@ void OnDisconnectedWrap()
 
             Log.Info($"KcpClient: connect to {address}:{port}");
 
-            // try resolve host name
-            if (!Common.ResolveHostname(address, out IPAddress[] addresses))
-            {
-                // pass error to user callback. no need to log it manually.
-                OnError(ErrorCode.DnsResolve, $"Failed to resolve host: {address}");
-                OnDisconnected();
-                return;
-            }
-
             // create socket
             remoteEndPoint = new IPEndPoint(addresses[0], port);
             socket = new Socket(remoteEndPoint.AddressFamily, SocketType.Dgram, ProtocolType.Udp);

Assets/Mirror/Transports/KCP/kcp2k/highlevel/KcpServer.cs

@@ -67,7 +67,18 @@ static Socket CreateServerSocket(bool DualMode, ushort port)
             {
                 // IPv6 socket with DualMode @ "::" : port
                 Socket socket = new Socket(AddressFamily.InterNetworkV6, SocketType.Dgram, ProtocolType.Udp);
-                socket.DualMode = true;
+                // settings DualMode may throw:
+                // https://learn.microsoft.com/en-us/dotnet/api/System.Net.Sockets.Socket.DualMode?view=net-7.0
+                // attempt it, otherwise log but continue
+                // fixes: https://github.com/MirrorNetworking/Mirror/issues/3358
+                try
+                {
+                    socket.DualMode = true;
+                }
+                catch (NotSupportedException e)
+                {
+                    Log.Warning($"Failed to set Dual Mode, continuing with IPv6 without Dual Mode. Error: {e}");
+                }
                 socket.Bind(new IPEndPoint(IPAddress.IPv6Any, port));
                 return socket;
             }

Assets/ScriptTemplates/53-Mirror__Custom Interest Management-CustomInterestManagement.cs.txt

@@ -32,9 +32,8 @@ public class #SCRIPTNAME# : InterestManagement
     /// </summary>
     /// <param name="identity">Object to be observed (or not) by clients</param>
     /// <param name="newObservers">cached hashset to put the result into</param>
-    /// <param name="initialize">true if being rebuilt for the first time</param>
     [ServerCallback]
-    public override void OnRebuildObservers(NetworkIdentity identity, HashSet<NetworkConnectionToClient> newObservers, bool initialize)
+    public override void OnRebuildObservers(NetworkIdentity identity, HashSet<NetworkConnectionToClient> newObservers)
     {
         // Default behaviour of making the identity object visible to all clients.
         // Replace this code with your own logic as appropriate.

Packages/manifest.json

@@ -2,8 +2,8 @@
   "dependencies": {
     "com.unity.2d.sprite": "1.0.0",
     "com.unity.2d.tilemap": "1.0.0",
-    "com.unity.ide.rider": "3.0.16",
+    "com.unity.ide.rider": "3.0.18",
-    "com.unity.ide.visualstudio": "2.0.16",
+    "com.unity.ide.visualstudio": "2.0.17",
     "com.unity.ide.vscode": "1.2.5",
     "com.unity.test-framework": "1.1.31",
     "com.unity.testtools.codecoverage": "1.2.2",

Packages/packages-lock.json

@@ -20,7 +20,7 @@
       "url": "https://packages.unity.com"
     },
     "com.unity.ide.rider": {
-      "version": "3.0.16",
+      "version": "3.0.18",
       "depth": 0,
       "source": "registry",
       "dependencies": {
@@ -29,7 +29,7 @@
       "url": "https://packages.unity.com"
     },
     "com.unity.ide.visualstudio": {
-      "version": "2.0.16",
+      "version": "2.0.17",
       "depth": 0,
       "source": "registry",
       "dependencies": {

ProjectSettings/ProjectVersion.txt

@@ -1,2 +1,2 @@
-m_EditorVersion: 2021.3.15f1
+m_EditorVersion: 2021.3.17f1
-m_EditorVersionWithRevision: 2021.3.15f1 (e8e88683f834)
+m_EditorVersionWithRevision: 2021.3.17f1 (3e8111cac19d)