diff --git a/Realtime/Conversation/LCIMConversation.cs b/Realtime/Conversation/LCIMConversation.cs
index 1a0c34d..f703d3d 100644
--- a/Realtime/Conversation/LCIMConversation.cs
+++ b/Realtime/Conversation/LCIMConversation.cs
@@ -263,6 +263,7 @@ namespace LeanCloud.Realtime {
                 options = LCIMMessageSendOptions.Default;
             }
             await Client.MessageController.Send(Id, message, options);
+            LastMessage = message;
             return message;
         }
 
diff --git a/Realtime/Internal/Connection/LCConnection.cs b/Realtime/Internal/Connection/LCConnection.cs
index ab98eba..bef04cf 100644
--- a/Realtime/Internal/Connection/LCConnection.cs
+++ b/Realtime/Internal/Connection/LCConnection.cs
@@ -184,6 +184,7 @@ namespace LeanCloud.Realtime.Internal.Connection {
         }
 
         private async Task Reconnect() {
+            OnReconnecting?.Invoke();
             while (true) {
                 int reconnectCount = 0;
                 // 重连策略
diff --git a/Realtime/Internal/Router/LCRTMRouter.cs b/Realtime/Internal/Router/LCRTMRouter.cs
index d663b46..418ddb7 100644
--- a/Realtime/Internal/Router/LCRTMRouter.cs
+++ b/Realtime/Internal/Router/LCRTMRouter.cs
@@ -10,6 +10,9 @@ namespace LeanCloud.Realtime.Internal.Router {
     /// RTM Router
     /// </summary>
     internal class LCRTMRouter {
+        /// <summary>
+        /// 请求超时
+        /// </summary>
         private const int REQUEST_TIMEOUT = 10000;
 
         private LCRTMServer rtmServer;