diff --git a/WebSocketTool/Client/ClientViewModel.cs b/WebSocketTool/Client/ClientViewModel.cs
index 2f8e61b..4b0d878 100644
--- a/WebSocketTool/Client/ClientViewModel.cs
+++ b/WebSocketTool/Client/ClientViewModel.cs
@@ -6,6 +6,7 @@ using log4net;
 using WebSocketSharp;
 using WebSocketTool.Base;
 using WebSocketTool.Util;
+using WebSocketTool.View.Dialog;
 using LogManager = log4net.LogManager;
 
 namespace WebSocketTool.Client
@@ -106,7 +107,7 @@ namespace WebSocketTool.Client
 
         public void Connect()
         {
-            if (string.IsNullOrEmpty(WsUrl))
+            if (string.IsNullOrEmpty(WsUrl) || (!WsUrl.StartsWith("wss://") && !WsUrl.StartsWith("ws://")))
             {
                 view.AppendInfo($"Hint {TimeUtil.GetCurrentDateTime()} \n 请输入正确的WebSocket地址");
                 return;
@@ -126,8 +127,16 @@ namespace WebSocketTool.Client
             view.AppendInfo($"Hint {TimeUtil.GetCurrentDateTime()} \n Start Connect Socket");
             if (IsProxyChecked)
             {
-                view.AppendInfo($"use proxy: {ProxyAddress}");
-                mClient.SetHttpProxy(ProxyAddress, ProxyUserName, ProxyPassword);
+                if (!string.IsNullOrEmpty(ProxyAddress))
+                {
+                    view.AppendInfo($"Hint use proxy: {ProxyAddress}");
+                    mClient.SetHttpProxy(ProxyAddress, ProxyUserName, ProxyPassword);
+                }
+                else
+                {
+                    view.ShowToast("请输入代理地址!");
+                    view.AppendInfo($"use proxy address is empty!");
+                }
             }
             mClient.ConnectAsync();
         }
diff --git a/WebSocketTool/Client/ClientWindow.xaml.cs b/WebSocketTool/Client/ClientWindow.xaml.cs
index 95de842..394ee6f 100644
--- a/WebSocketTool/Client/ClientWindow.xaml.cs
+++ b/WebSocketTool/Client/ClientWindow.xaml.cs
@@ -75,11 +75,18 @@ namespace WebSocketTool.Client
         {
             viewModel.Close();
         }
+
+        public Window GetWindow()
+        {
+            return this;
+        }
     }
 
     public interface IClientView
     {
         void ShowToast(string msg);
         void AppendInfo(string info);
+
+        Window GetWindow();
     }
 }
diff --git a/WebSocketTool/pack/build.bat b/WebSocketTool/pack/build.bat
index a05fab4..b09041f 100644
--- a/WebSocketTool/pack/build.bat
+++ b/WebSocketTool/pack/build.bat
@@ -1,4 +1,4 @@
-set version=1.0.0
+set version=1.0.3
 
 if not "%~1"=="" (
     set version=%1
diff --git a/websocket-sharp/websocket-sharp.csproj b/websocket-sharp/websocket-sharp.csproj
index 8b75874..a61b4a9 100644
--- a/websocket-sharp/websocket-sharp.csproj
+++ b/websocket-sharp/websocket-sharp.csproj
@@ -9,7 +9,7 @@
     <OutputType>Library</OutputType>
     <RootNamespace>WebSocketSharp</RootNamespace>
     <AssemblyName>websocket-sharp</AssemblyName>
-    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>websocket-sharp.snk</AssemblyOriginatorKeyFile>
     <FileUpgradeFlags>