diff --git a/Realtime/Realtime-Unity/Realtime-Unity.csproj b/Realtime/Realtime-Unity/Realtime-Unity.csproj
index b900418..7e1a4a8 100644
--- a/Realtime/Realtime-Unity/Realtime-Unity.csproj
+++ b/Realtime/Realtime-Unity/Realtime-Unity.csproj
@@ -52,9 +52,6 @@
     <Compile Include="..\Realtime\Internal\Controller\LCIMConversationController.cs">
       <Link>Internal\Controller\LCIMConversationController.cs</Link>
     </Compile>
-    <Compile Include="..\Realtime\Internal\Controller\LCIMGoAwayController.cs">
-      <Link>Internal\Controller\LCIMGoAwayController.cs</Link>
-    </Compile>
     <Compile Include="..\Realtime\Internal\Router\LCRTMServer.cs">
       <Link>Internal\Router\LCRTMServer.cs</Link>
     </Compile>
diff --git a/Realtime/Realtime/Internal/Connection/LCConnection.cs b/Realtime/Realtime/Internal/Connection/LCConnection.cs
index 40312d7..3b797ac 100644
--- a/Realtime/Realtime/Internal/Connection/LCConnection.cs
+++ b/Realtime/Realtime/Internal/Connection/LCConnection.cs
@@ -70,8 +70,10 @@ namespace LeanCloud.Realtime.Internal.Connection {
         private LCWebSocketClient ws;
 
         private State state;
+        // 可以在 connecting 状态时拿到 Task，并在重连成功后继续操作
         private Task connectTask;
 
+        // 共享这条连接的 IM Client
         private readonly Dictionary<string, LCIMClient> idToClients;
 
         internal LCConnection(string id) {
@@ -193,8 +195,10 @@ namespace LeanCloud.Realtime.Internal.Connection {
                     }
                 } else {
                     if (command.Cmd == CommandType.Echo) {
+                        // 心跳应答
                         heartBeat.Pong();
                     } else if (command.Cmd == CommandType.Goaway) {
+                        // 针对连接的消息
                         Reset();
                     } else {
                         // 通知