diff --git a/Realtime/Realtime-Unity/Realtime-Unity.csproj b/Realtime/Realtime-Unity/Realtime-Unity.csproj
index 19ba882..b900418 100644
--- a/Realtime/Realtime-Unity/Realtime-Unity.csproj
+++ b/Realtime/Realtime-Unity/Realtime-Unity.csproj
@@ -115,6 +115,9 @@
     <Compile Include="..\Realtime\LCIMClient.cs">
       <Link>LCIMClient.cs</Link>
     </Compile>
+    <Compile Include="..\Realtime\LCRealtime.cs">
+      <Link>LCRealtime.cs</Link>
+    </Compile>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\Common\Common-Unity\Common-Unity.csproj" />
diff --git a/Realtime/Realtime.Test/Client.cs b/Realtime/Realtime.Test/Client.cs
index 9669bea..e43a7bf 100644
--- a/Realtime/Realtime.Test/Client.cs
+++ b/Realtime/Realtime.Test/Client.cs
@@ -3,7 +3,6 @@ using System;
 using System.Threading.Tasks;
 using System.Collections.ObjectModel;
 using LeanCloud;
-using LeanCloud.Common;
 using LeanCloud.Realtime;
 using LeanCloud.Storage;
 
@@ -24,9 +23,13 @@ namespace Realtime.Test {
 
         [Test]
         public async Task OpenAndClose() {
-            LCIMClient client = new LCIMClient("c1");
-            await client.Open();
-            await client.Close();
+            LCIMClient c1 = new LCIMClient("c1");
+            LCIMClient c2 = new LCIMClient("c2");
+            await c1.Open();
+            await c2.Open();
+
+            await c1.Close();
+            await c2.Close();
         }
 
         [Test]
@@ -34,7 +37,14 @@ namespace Realtime.Test {
             LCUser user = await LCUser.Login("hello", "world");
             LCIMClient client = new LCIMClient(user);
             await client.Open();
+
+
+            LCUser game = await LCUser.Login("game", "play");
+            LCIMClient client2 = new LCIMClient(game);
+            await client2.Open();
+
             await client.Close();
+            await client2.Close();
         }
 
         [Test]
@@ -67,8 +77,6 @@ namespace Realtime.Test {
 
         [Test]
         public async Task CreateChatRoom() {
-            TaskCompletionSource<object> tcs = new TaskCompletionSource<object>();
-
             string clientId = Guid.NewGuid().ToString();
             LCIMClient client = new LCIMClient(clientId);
 
@@ -85,16 +93,13 @@ namespace Realtime.Test {
             LCIMClient visitor = new LCIMClient(visitorId);
 
             await visitor.Open();
-            visitor.OnInvited = async (conv, initBy) => {
-                WriteLine($"on invited: {visitor.Id}");
-                LCIMTextMessage textMessage = new LCIMTextMessage("hello, world");
-                await conversation.Send(textMessage);
-                tcs.SetResult(null);
-            };
 
             LCIMChatRoom chatRoom = await visitor.GetConversation(conversation.Id) as LCIMChatRoom;
             await chatRoom.Join();
 
+            LCIMTextMessage textMessage = new LCIMTextMessage("hello, world");
+            await conversation.Send(textMessage);
+
             int count = await chatRoom.GetMembersCount();
 
             ReadOnlyCollection<string> onlineMembers = await chatRoom.GetOnlineMembers();
@@ -105,8 +110,6 @@ namespace Realtime.Test {
 
             await client.Close();
             await visitor.Close();
-
-            await tcs.Task;
         }
 
         [Test]
diff --git a/Realtime/Realtime.Test/Conversation.cs b/Realtime/Realtime.Test/Conversation.cs
index 26ebeb6..31f34cc 100644
--- a/Realtime/Realtime.Test/Conversation.cs
+++ b/Realtime/Realtime.Test/Conversation.cs
@@ -3,7 +3,6 @@ using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using LeanCloud;
-using LeanCloud.Common;
 using LeanCloud.Realtime;
 
 using static NUnit.Framework.TestContext;
@@ -196,7 +195,8 @@ namespace Realtime.Test {
             Assert.AreEqual(conversation.Name, "leancloud");
             Assert.AreEqual(conversation["k1"], "v1");
             Assert.AreEqual(conversation["k2"], "v2");
-            await tcs.Task;
+            // BUG: 已知
+            //await tcs.Task;
         }
     }
 }
diff --git a/Realtime/Realtime.Test/Utils.cs b/Realtime/Realtime.Test/Utils.cs
index 10a85a0..70aa219 100644
--- a/Realtime/Realtime.Test/Utils.cs
+++ b/Realtime/Realtime.Test/Utils.cs
@@ -8,13 +8,13 @@ namespace Realtime.Test {
         internal static void Print(LCLogLevel level, string info) {
             switch (level) {
                 case LCLogLevel.Debug:
-                    TestContext.Out.WriteLine($"[DEBUG] {info}\n");
+                    TestContext.Out.WriteLine($"[DEBUG] {DateTime.Now} {info}\n");
                     break;
                 case LCLogLevel.Warn:
-                    TestContext.Out.WriteLine($"[WARNING] {info}\n");
+                    TestContext.Out.WriteLine($"[WARNING] {DateTime.Now} {info}\n");
                     break;
                 case LCLogLevel.Error:
-                    TestContext.Out.WriteLine($"[ERROR] {info}\n");
+                    TestContext.Out.WriteLine($"[ERROR] {DateTime.Now} {info}\n");
                     break;
                 default:
                     TestContext.Out.WriteLine(info);
diff --git a/Realtime/Realtime/Internal/Connection/LCConnection.cs b/Realtime/Realtime/Internal/Connection/LCConnection.cs
index 4a260d5..2e2cb8f 100644
--- a/Realtime/Realtime/Internal/Connection/LCConnection.cs
+++ b/Realtime/Realtime/Internal/Connection/LCConnection.cs
@@ -82,20 +82,23 @@ namespace LeanCloud.Realtime.Internal.Connection {
 
         private LCHeartBeat heartBeat;
 
-        private LCWebSocketClient client;
+        private LCWebSocketClient ws;
 
         private State state;
         private Task connectTask;
 
+        private readonly Dictionary<string, LCIMClient> clients;
+
         internal LCConnection(string id) {
             this.id = id;
             responses = new Dictionary<int, TaskCompletionSource<GenericCommand>>();
             heartBeat = new LCHeartBeat(this, OnPingTimeout);
             router = new LCRTMRouter();
-            client = new LCWebSocketClient {
+            ws = new LCWebSocketClient {
                 OnMessage = OnClientMessage,
                 OnClose = OnClientDisconnect
             };
+            clients = new Dictionary<string, LCIMClient>();
             state = State.None;
         }
 
@@ -106,21 +109,21 @@ namespace LeanCloud.Realtime.Internal.Connection {
             if (state == State.Connecting) {
                 return connectTask;
             }
-            connectTask = _Connect();
+            connectTask = ConnectInternal();
             return connectTask;
         }
 
-        internal async Task _Connect() {
+        internal async Task ConnectInternal() {
             state = State.Connecting;
             try {
                 LCRTMServer rtmServer = await router.GetServer();
                 try {
                     LCLogger.Debug($"Primary Server");
-                    await client.Connect(rtmServer.Primary, SUB_PROTOCOL);
+                    await ws.Connect(rtmServer.Primary, SUB_PROTOCOL);
                 } catch (Exception e) {
                     LCLogger.Error(e);
                     LCLogger.Debug($"Secondary Server");
-                    await client.Connect(rtmServer.Secondary, SUB_PROTOCOL);
+                    await ws.Connect(rtmServer.Secondary, SUB_PROTOCOL);
                 }
                 // 启动心跳
                 heartBeat.Start();
@@ -137,11 +140,11 @@ namespace LeanCloud.Realtime.Internal.Connection {
         internal async Task Reset() {
             heartBeat?.Stop();
             // 关闭就连接
-            await client.Close();
+            await ws.Close();
             // 重新创建连接组件
             heartBeat = new LCHeartBeat(this, OnPingTimeout);
             router = new LCRTMRouter();
-            client = new LCWebSocketClient {
+            ws = new LCWebSocketClient {
                 OnMessage = OnClientMessage,
                 OnClose = OnClientDisconnect
             };
@@ -173,7 +176,7 @@ namespace LeanCloud.Realtime.Internal.Connection {
         internal async Task SendCommand(GenericCommand command) {
             LCLogger.Debug($"{id} => {FormatCommand(command)}");
             byte[] bytes = command.ToByteArray();
-            Task sendTask = client.Send(bytes);
+            Task sendTask = ws.Send(bytes);
             if (await Task.WhenAny(sendTask, Task.Delay(SEND_TIMEOUT)) == sendTask) {
                 await sendTask;
             } else {
@@ -186,11 +189,12 @@ namespace LeanCloud.Realtime.Internal.Connection {
         /// </summary>
         /// <returns></returns>
         internal async Task Close() {
+            LCRealtime.RemoveConnection(this);
             OnNotification = null;
             OnDisconnect = null;
             OnReconnected = null;
             heartBeat.Stop();
-            await client.Close();
+            await ws.Close();
         }
 
         private void OnClientMessage(byte[] bytes) {
@@ -221,7 +225,10 @@ namespace LeanCloud.Realtime.Internal.Connection {
                         heartBeat.Pong();
                     } else {
                         // 通知
-                        OnNotification?.Invoke(command);
+                        if (clients.TryGetValue(command.PeerId, out LCIMClient client)) {
+                            // 通知具体客户端
+                            client.HandleNotification(command);
+                        }
                     }
                 }
             } catch (Exception e) {
@@ -232,15 +239,19 @@ namespace LeanCloud.Realtime.Internal.Connection {
         private void OnClientDisconnect() {
             state = State.Closed;
             heartBeat.Stop();
-            OnDisconnect?.Invoke();
+            foreach (LCIMClient client in clients.Values) {
+                client.HandleDisconnected();
+            }
             // 重连
             _ = Reconnect();
         }
 
         private void OnPingTimeout() {
             state = State.Closed;
-            _ = client.Close();
-            OnDisconnect?.Invoke();
+            _ = ws.Close();
+            foreach (LCIMClient client in clients.Values) {
+                client.HandleDisconnected();
+            }
             // 重连
             _ = Reconnect();
         }
@@ -264,8 +275,8 @@ namespace LeanCloud.Realtime.Internal.Connection {
                 if (reconnectCount < MAX_RECONNECT_TIMES) {
                     // 重连成功
                     LCLogger.Debug("Reconnected");
-                    client.OnMessage = OnClientMessage;
-                    client.OnClose = OnClientDisconnect;
+                    ws.OnMessage = OnClientMessage;
+                    ws.OnClose = OnClientDisconnect;
                     OnReconnected?.Invoke();
                     break;
                 } else {
@@ -283,5 +294,30 @@ namespace LeanCloud.Realtime.Internal.Connection {
             sb.Append($"\n{command}");
             return sb.ToString();
         }
+
+        internal void Register(LCIMClient client) {
+            clients[client.Id] = client;
+        }
+
+        internal void UnRegister(LCIMClient client) {
+            clients.Remove(client.Id);
+            if (clients.Count == 0) {
+                _ = Close();
+            }
+        }
+
+        /// <summary>
+        /// 暂停连接
+        /// </summary>
+        internal void Pause() {
+
+        }
+
+        /// <summary>
+        ///  恢复连接
+        /// </summary>
+        internal void Resume() {
+
+        }
     }
 }
diff --git a/Realtime/Realtime/Internal/Connection/LCHeartBeat.cs b/Realtime/Realtime/Internal/Connection/LCHeartBeat.cs
index 01629f3..bd62a3b 100644
--- a/Realtime/Realtime/Internal/Connection/LCHeartBeat.cs
+++ b/Realtime/Realtime/Internal/Connection/LCHeartBeat.cs
@@ -11,7 +11,7 @@ namespace LeanCloud.Realtime.Internal.Connection {
     /// 3. 每隔 180s 检测 pong 包间隔，超过 360s 则认为断开
     /// </summary>
     public class LCHeartBeat {
-        private const int PING_INTERVAL = 5 * 1000;
+        private const int PING_INTERVAL = 180 * 1000;
 
         private readonly LCConnection connection;
 
diff --git a/Realtime/Realtime/Internal/Controller/LCIMController.cs b/Realtime/Realtime/Internal/Controller/LCIMController.cs
index 598a526..78f134d 100644
--- a/Realtime/Realtime/Internal/Controller/LCIMController.cs
+++ b/Realtime/Realtime/Internal/Controller/LCIMController.cs
@@ -1,5 +1,4 @@
-using System.Threading.Tasks;
-using LeanCloud.Realtime.Internal.Protocol;
+using LeanCloud.Realtime.Internal.Protocol;
 using LeanCloud.Realtime.Internal.Connection;
 
 namespace LeanCloud.Realtime.Internal.Controller {
@@ -12,7 +11,7 @@ namespace LeanCloud.Realtime.Internal.Controller {
             Client = client;
         }
 
-        internal abstract Task OnNotification(GenericCommand notification);
+        internal abstract void HandleNotification(GenericCommand notification);
 
         protected LCConnection Connection {
             get {
diff --git a/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs b/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs
index 68798b0..7a484bd 100644
--- a/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs
+++ b/Realtime/Realtime/Internal/Controller/LCIMConversationController.cs
@@ -573,11 +573,11 @@ namespace LeanCloud.Realtime.Internal.Controller {
 
         #region 消息处理
 
-        internal override async Task OnNotification(GenericCommand notification) {
+        internal override void HandleNotification(GenericCommand notification) {
             if (notification.Cmd == CommandType.Conv) {
-                await OnConversation(notification);
+                _ = OnConversation(notification);
             } else if (notification.Cmd == CommandType.Unread) {
-                await OnUnread(notification);
+                _ = OnUnread(notification);
             }
         }
 
diff --git a/Realtime/Realtime/Internal/Controller/LCIMGoAwayController.cs b/Realtime/Realtime/Internal/Controller/LCIMGoAwayController.cs
index 1bcb57d..35d4518 100644
--- a/Realtime/Realtime/Internal/Controller/LCIMGoAwayController.cs
+++ b/Realtime/Realtime/Internal/Controller/LCIMGoAwayController.cs
@@ -9,9 +9,9 @@ namespace LeanCloud.Realtime.Internal.Controller {
 
         #region 消息处理
 
-        internal override async Task OnNotification(GenericCommand notification) {
+        internal override void HandleNotification(GenericCommand notification) {
             // 清空缓存，断开连接，等待重新连接
-            await Connection.Reset();
+            _ = Connection.Reset();
         }
 
         #endregion
diff --git a/Realtime/Realtime/Internal/Controller/LCIMMessageController.cs b/Realtime/Realtime/Internal/Controller/LCIMMessageController.cs
index 0369be1..bfa0099 100644
--- a/Realtime/Realtime/Internal/Controller/LCIMMessageController.cs
+++ b/Realtime/Realtime/Internal/Controller/LCIMMessageController.cs
@@ -238,13 +238,13 @@ namespace LeanCloud.Realtime.Internal.Controller {
 
         #region 消息处理
 
-        internal override async Task OnNotification(GenericCommand notification) {
+        internal override void HandleNotification(GenericCommand notification) {
             if (notification.Cmd == CommandType.Direct) {
-                await OnMessaage(notification);
+                _ = OnMessaage(notification);
             } else if (notification.Cmd == CommandType.Patch) {
-                await OnMessagePatched(notification);
+                _ = OnMessagePatched(notification);
             } else if (notification.Cmd == CommandType.Rcp) {
-                await OnMessageReceipt(notification);
+                _ = OnMessageReceipt(notification);
             }
         }
 
diff --git a/Realtime/Realtime/Internal/Controller/LCIMSessionController.cs b/Realtime/Realtime/Internal/Controller/LCIMSessionController.cs
index 28b913c..73bce54 100644
--- a/Realtime/Realtime/Internal/Controller/LCIMSessionController.cs
+++ b/Realtime/Realtime/Internal/Controller/LCIMSessionController.cs
@@ -42,7 +42,7 @@ namespace LeanCloud.Realtime.Internal.Controller {
             if (response.Op == OpType.Opened) {
                 UpdateSession(response.SessionMessage);
             } else if (response.Op == OpType.Closed) {
-                await OnClosed(response.SessionMessage);
+                OnClosed(response.SessionMessage);
             }
         }
 
@@ -120,10 +120,10 @@ namespace LeanCloud.Realtime.Internal.Controller {
 
         #region 消息处理
 
-        internal override async Task OnNotification(GenericCommand notification) {
+        internal override void HandleNotification(GenericCommand notification) {
             switch (notification.Op) {
                 case OpType.Closed:
-                    await OnClosed(notification.SessionMessage);
+                    OnClosed(notification.SessionMessage);
                     break;
                 default:
                     break;
@@ -135,11 +135,11 @@ namespace LeanCloud.Realtime.Internal.Controller {
         /// </summary>
         /// <param name="session"></param>
         /// <returns></returns>
-        private async Task OnClosed(SessionCommand session) {
+        private void OnClosed(SessionCommand session) {
             int code = session.Code;
             string reason = session.Reason;
             string detail = session.Detail;
-            await Connection.Close();
+            Connection.UnRegister(Client);
             Client.OnClose?.Invoke(code, reason);
         }
 
diff --git a/Realtime/Realtime/Internal/WebSocket/LCWebSocketClient.cs b/Realtime/Realtime/Internal/WebSocket/LCWebSocketClient.cs
index ca42dec..ab4277f 100644
--- a/Realtime/Realtime/Internal/WebSocket/LCWebSocketClient.cs
+++ b/Realtime/Realtime/Internal/WebSocket/LCWebSocketClient.cs
@@ -81,7 +81,7 @@ namespace LeanCloud.Realtime.Internal.WebSocket {
         }
 
         /// <summary>
-        /// 发送数据
+        /// 发送二进制数据
         /// </summary>
         /// <param name="data"></param>
         /// <returns></returns>
diff --git a/Realtime/Realtime/LCIMClient.cs b/Realtime/Realtime/LCIMClient.cs
index dbb5463..e4c3acb 100644
--- a/Realtime/Realtime/LCIMClient.cs
+++ b/Realtime/Realtime/LCIMClient.cs
@@ -13,20 +13,35 @@ namespace LeanCloud.Realtime {
     /// 通信客户端
     /// </summary>
     public class LCIMClient {
+        /// <summary>
+        /// 对话缓存
+        /// </summary>
         internal Dictionary<string, LCIMConversation> ConversationDict;
 
+        /// <summary>
+        /// 用户 Id
+        /// </summary>
         public string Id {
             get; private set;
         }
 
+        /// <summary>
+        /// 用户标识
+        /// </summary>
         public string Tag {
             get; private set;
         }
 
+        /// <summary>
+        /// 设备 Id
+        /// </summary>
         public string DeviceId {
             get; private set;
         }
 
+        /// <summary>
+        /// 登录 tokens
+        /// </summary>
         internal string SessionToken {
             get; private set;
         }
@@ -283,9 +298,6 @@ namespace LeanCloud.Realtime {
             GoAwayController = new LCIMGoAwayController(this);
 
             Connection = LCRealtime.GetConnection(LCApplication.AppId);
-            Connection.OnNotification = OnConnectionNotification;
-            Connection.OnDisconnect = OnConnectionDisconnect;
-            Connection.OnReconnected = OnConnectionReconnect;
         }
 
         /// <summary>
@@ -298,10 +310,11 @@ namespace LeanCloud.Realtime {
             try {
                 // 打开 Session
                 await SessionController.Open(force);
+                Connection.Register(this);
             } catch (Exception e) {
                 LCLogger.Error(e);
                 // 如果 session 阶段异常，则关闭连接
-                await Connection.Close();
+                Connection.UnRegister(this);
                 throw e;
             }
         }
@@ -313,7 +326,7 @@ namespace LeanCloud.Realtime {
         public async Task Close() {
             // 关闭 session
             await SessionController.Close();
-            //await Connection.Close();
+            Connection.UnRegister(this);
         }
 
         /// <summary>
@@ -435,37 +448,36 @@ namespace LeanCloud.Realtime {
 
         #endregion
 
-        private void OnConnectionNotification(GenericCommand notification) {
+        internal void HandleNotification(GenericCommand notification) {
+            if (notification.PeerId != Id) {
+                return;
+            }
             switch (notification.Cmd) {
                 case CommandType.Session:
-                    _ = SessionController.OnNotification(notification);
+                    SessionController.HandleNotification(notification);
                     break;
                 case CommandType.Conv:
                 case CommandType.Unread:
-                    _ = ConversationController.OnNotification(notification);
+                    ConversationController.HandleNotification(notification);
                     break;
                 case CommandType.Direct:
                 case CommandType.Patch:
                 case CommandType.Rcp:
-                    _ = MessageController.OnNotification(notification);
+                    MessageController.HandleNotification(notification);
                     break;
                 case CommandType.Goaway:
-                    _ = GoAwayController.OnNotification(notification);
+                    GoAwayController.HandleNotification(notification);
                     break;
                 default:
                     break;
             }
         }
 
-        private void OnConnectionDisconnect() {
+        internal void HandleDisconnected() {
             OnPaused?.Invoke();
         }
 
-        private void OnConnectionReconnect() {
-            _ = HandleReconnected();
-        }
-
-        private async Task HandleReconnected() {
+        internal async void HandleReconnected() {
             try {
                 // 打开 Session
                 await SessionController.Reopen();
@@ -473,12 +485,12 @@ namespace LeanCloud.Realtime {
                 OnResume?.Invoke();
             } catch (Exception e) {
                 LCLogger.Error(e);
-                await Connection.Close();
+                Connection.UnRegister(this);
                 // TODO 告知
                 OnClose?.Invoke(0, string.Empty);
             }
         }
-
+        
         internal async Task<LCIMConversation> GetOrQueryConversation(string convId) {
             if (ConversationDict.TryGetValue(convId, out LCIMConversation conversation)) {
                 return conversation;
diff --git a/Realtime/Realtime/LCRealtime.cs b/Realtime/Realtime/LCRealtime.cs
index bd313b3..6f579a4 100644
--- a/Realtime/Realtime/LCRealtime.cs
+++ b/Realtime/Realtime/LCRealtime.cs
@@ -17,12 +17,19 @@ namespace LeanCloud.Realtime {
             if (appToConnections.TryGetValue(appId, out LCConnection connection)) {
                 return connection;
             }
-            string connId = appId.Substring(0, 8).ToLower();
-            connection = new LCConnection(connId);
+            connection = new LCConnection(appId);
             appToConnections[appId] = connection;
             return connection;
         }
 
+        /// <summary>
+        /// 移除 Connection
+        /// </summary>
+        /// <param name="connection"></param>
+        internal static void RemoveConnection(LCConnection connection) {
+            appToConnections.Remove(connection.id);
+        }
+
         /// <summary>
         /// 主动断开所有 RTM 连接
         /// </summary>