com.unity.netcode.gameobjects@2.1.1

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

Additional documentation and release notes are available at [Multiplayer Documentation](https://docs-multiplayer.unity3d.com).

## [2.1.1] - 2024-10-18

### Added

- Added ability to edit the `NetworkConfig.AutoSpawnPlayerPrefabClientSide` within the inspector view. (#3097)
- Added `IContactEventHandlerWithInfo` that derives from `IContactEventHandler` that can be updated per frame to provide `ContactEventHandlerInfo` information to the `RigidbodyContactEventManager` when processing collisions. (#3094)
  - `ContactEventHandlerInfo.ProvideNonRigidBodyContactEvents`: When set to true, non-`Rigidbody` collisions with the registered `Rigidbody` will generate contact event notifications. (#3094)
  - `ContactEventHandlerInfo.HasContactEventPriority`: When set to true, the `Rigidbody` will be prioritized as the instance that generates the event if the `Rigidbody` colliding does not have priority. (#3094)
- Added a static `NetworkManager.OnInstantiated` event notification to be able to track when a new `NetworkManager` instance has been instantiated. (#3088)
- Added a static `NetworkManager.OnDestroying` event notification to be able to track when an existing `NetworkManager` instance is being destroyed. (#3088)

### Fixed

- Fixed issue where `NetworkPrefabProcessor` would not mark the prefab list as dirty and prevent saving the `DefaultNetworkPrefabs` asset when only imports or only deletes were detected.(#3103)
- Fixed an issue where nested `NetworkTransform` components in owner authoritative mode cleared their initial settings on the server, causing improper synchronization. (#3099)
- Fixed issue with service not getting synchronized with in-scene placed `NetworkObject` instances when a session owner starts a `SceneEventType.Load` event. (#3096)
- Fixed issue with the in-scene network prefab instance update menu tool where it was not properly updating scenes when invoked on the root prefab instance. (#3092)
- Fixed an issue where newly synchronizing clients would always receive current `NetworkVariable` values, potentially causing issues with collections if there were pending updates. Now, pending state updates serialize previous values to avoid duplicates on new clients. (#3081)
- Fixed issue where changing ownership would mark every `NetworkVariable` dirty. Now, it will only mark any `NetworkVariable` with owner read permissions as dirty and will send/flush any pending updates to all clients prior to sending the change in ownership message. (#3081)
- Fixed an issue where transferring ownership of `NetworkVariable` collections didn't update the new owner’s previous value, causing the last added value to be detected as a change during additions or removals. (#3081)
- Fixed issue where a client (or server) with no write permissions for a `NetworkVariable` using a standard .NET collection type could still modify the collection which could cause various issues depending upon the modification and collection type. (#3081)
- Fixed issue where applying the position and/or rotation to the `NetworkManager.ConnectionApprovalResponse` when connection approval and auto-spawn player prefab were enabled would not apply the position and/or rotation when the player prefab was instantiated. (#3078)
- Fixed issue where `NetworkObject.SpawnWithObservers` was not being honored when spawning the player prefab. (#3077)
- Fixed issue with the client count not being correct on the host or server side when a client disconnects itself from a session. (#3075)

### Changed

- Changed `NetworkConfig.AutoSpawnPlayerPrefabClientSide` is no longer automatically set when starting `NetworkManager`. (#3097)
- Updated `NetworkVariableDeltaMessage` so the server now forwards delta state updates from clients immediately, instead of waiting until the end of the frame or the next network tick. (#3081)

Runtime/Messaging/Messages/ConnectionRequestMessage.cs

@@ -2,16 +2,54 @@ using Unity.Collections;
 
 namespace Unity.Netcode
 {
-    internal struct ConnectionRequestMessage : INetworkMessage
+    /// <summary>
+    /// Only used when connecting to the distributed authority service
+    /// </summary>
+    internal struct ClientConfig : INetworkSerializable
     {
-        public int Version => 0;
-
-        public ulong ConfigHash;
-
-        public bool CMBServiceConnection;
+        /// <summary>
+        /// We start at version 1, where anything less than version 1 on the service side
+        /// is not bypass feature compatible.
+        /// </summary>
+        private const int k_BypassFeatureCompatible = 1;
+        public int Version => k_BypassFeatureCompatible;
         public uint TickRate;
         public bool EnableSceneManagement;
 
+        // Only gets deserialized but should never be used unless testing
+        public int RemoteClientVersion;
+
+        public void NetworkSerialize<T>(BufferSerializer<T> serializer) where T : IReaderWriter
+        {
+            if (serializer.IsWriter)
+            {
+                var writer = serializer.GetFastBufferWriter();
+                BytePacker.WriteValueBitPacked(writer, Version);
+                BytePacker.WriteValueBitPacked(writer, TickRate);
+                writer.WriteValueSafe(EnableSceneManagement);
+            }
+            else
+            {
+                var reader = serializer.GetFastBufferReader();
+                ByteUnpacker.ReadValueBitPacked(reader, out RemoteClientVersion);
+                ByteUnpacker.ReadValueBitPacked(reader, out TickRate);
+                reader.ReadValueSafe(out EnableSceneManagement);
+            }
+        }
+    }
+
+    internal struct ConnectionRequestMessage : INetworkMessage
+    {
+        // This version update is unidirectional (client to service) and version
+        // handling occurs on the service side. This serialized data is never sent
+        // to a host or server.
+        private const int k_SendClientConfigToService = 1;
+        public int Version => k_SendClientConfigToService;
+
+        public ulong ConfigHash;
+        public bool CMBServiceConnection;
+        public ClientConfig ClientConfig;
+
         public byte[] ConnectionData;
 
         public bool ShouldSendConnectionData;
@@ -36,8 +74,7 @@ namespace Unity.Netcode
 
             if (CMBServiceConnection)
             {
-                writer.WriteValueSafe(TickRate);
-                writer.WriteValueSafe(EnableSceneManagement);
+                writer.WriteNetworkSerializable(ClientConfig);
             }
 
             if (ShouldSendConnectionData)