diff --git a/Example/bin/Debug/example.exe b/Example/bin/Debug/example.exe
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diff --git a/Example/bin/Debug/websocket-sharp.dll b/Example/bin/Debug/websocket-sharp.dll
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diff --git a/Example/bin/Debug_Ubuntu/example.exe b/Example/bin/Debug_Ubuntu/example.exe
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diff --git a/Example/bin/Debug_Ubuntu/example.exe.mdb b/Example/bin/Debug_Ubuntu/example.exe.mdb
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diff --git a/Example/bin/Debug_Ubuntu/websocket-sharp.dll b/Example/bin/Debug_Ubuntu/websocket-sharp.dll
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index 3ed8a745..747ffa0a 100644
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diff --git a/Example/bin/Release/example.exe b/Example/bin/Release/example.exe
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diff --git a/Example/bin/Release/websocket-sharp.dll b/Example/bin/Release/websocket-sharp.dll
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diff --git a/Example/bin/Release_Ubuntu/example.exe b/Example/bin/Release_Ubuntu/example.exe
index 9d256102..ce776c74 100755
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diff --git a/Example/bin/Release_Ubuntu/websocket-sharp.dll b/Example/bin/Release_Ubuntu/websocket-sharp.dll
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diff --git a/Example1/bin/Debug/example1.exe b/Example1/bin/Debug/example1.exe
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index 539b0437..290ec7e2 100644
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diff --git a/Example1/bin/Debug/websocket-sharp.dll b/Example1/bin/Debug/websocket-sharp.dll
index 0acf1745..46afa982 100755
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index 1e02410d..9c210e54 100644
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diff --git a/Example1/bin/Debug_Ubuntu/example1.exe b/Example1/bin/Debug_Ubuntu/example1.exe
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index 2739eb83..0ddff432 100644
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diff --git a/Example1/bin/Release/example1.exe b/Example1/bin/Release/example1.exe
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diff --git a/Example1/bin/Release/websocket-sharp.dll b/Example1/bin/Release/websocket-sharp.dll
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diff --git a/Example1/bin/Release_Ubuntu/example1.exe b/Example1/bin/Release_Ubuntu/example1.exe
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diff --git a/Example1/bin/Release_Ubuntu/websocket-sharp.dll b/Example1/bin/Release_Ubuntu/websocket-sharp.dll
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diff --git a/Example2/bin/Debug/example2.exe b/Example2/bin/Debug/example2.exe
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index 1e02410d..9c210e54 100644
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diff --git a/Example2/bin/Debug_Ubuntu/example2.exe b/Example2/bin/Debug_Ubuntu/example2.exe
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diff --git a/Example2/bin/Debug_Ubuntu/example2.exe.mdb b/Example2/bin/Debug_Ubuntu/example2.exe.mdb
index 200777a2..1ea2edf2 100644
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diff --git a/Example2/bin/Debug_Ubuntu/websocket-sharp.dll b/Example2/bin/Debug_Ubuntu/websocket-sharp.dll
index 3c35b036..25477feb 100755
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diff --git a/Example2/bin/Debug_Ubuntu/websocket-sharp.dll.mdb b/Example2/bin/Debug_Ubuntu/websocket-sharp.dll.mdb
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diff --git a/Example2/bin/Release/example2.exe b/Example2/bin/Release/example2.exe
index 6ed05f3e..e6392c71 100755
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diff --git a/Example2/bin/Release/websocket-sharp.dll b/Example2/bin/Release/websocket-sharp.dll
index d31f40d0..1a8ff573 100755
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diff --git a/Example2/bin/Release_Ubuntu/example2.exe b/Example2/bin/Release_Ubuntu/example2.exe
index bca44f11..852e4752 100755
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diff --git a/Example2/bin/Release_Ubuntu/websocket-sharp.dll b/Example2/bin/Release_Ubuntu/websocket-sharp.dll
index 6e23a043..d1956dc9 100755
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diff --git a/websocket-sharp.userprefs b/websocket-sharp.userprefs
index 4f01e372..8a063dbf 100644
--- a/websocket-sharp.userprefs
+++ b/websocket-sharp.userprefs
@@ -1,5 +1,5 @@
 <Properties>
-  <MonoDevelop.Ide.Workspace ActiveConfiguration="Release_Ubuntu" />
+  <MonoDevelop.Ide.Workspace ActiveConfiguration="Debug" />
   <MonoDevelop.Ide.Workbench />
   <MonoDevelop.Ide.DebuggingService.Breakpoints>
     <BreakpointStore />
diff --git a/websocket-sharp/WebSocket.cs b/websocket-sharp/WebSocket.cs
index e72bcee6..e1ed0098 100644
--- a/websocket-sharp/WebSocket.cs
+++ b/websocket-sharp/WebSocket.cs
@@ -112,6 +112,30 @@ namespace WebSocketSharp
       get { return _extensions; }
     }
 
+    public bool IsConnected
+    {
+      get
+      {
+        if (_tcpClient == null) return false;
+
+        var socket = _tcpClient.Client;
+        if (!socket.Connected) return false;
+
+        if (socket.Poll(0, SelectMode.SelectWrite) &&
+            !socket.Poll(0, SelectMode.SelectError))
+        {
+          var buffer = new byte[1];
+
+          if (socket.Receive(buffer, SocketFlags.Peek) != 0)
+          {
+            return true;
+          }
+        }
+
+        return false;
+      }
+    }
+
     public string Protocol
     {
       get { return _protocol; }
diff --git a/websocket-sharp/bin/Debug/websocket-sharp.dll b/websocket-sharp/bin/Debug/websocket-sharp.dll
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diff --git a/websocket-sharp/bin/Debug/websocket-sharp.dll.mdb b/websocket-sharp/bin/Debug/websocket-sharp.dll.mdb
index 1e02410d..9c210e54 100644
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diff --git a/websocket-sharp/bin/Debug_Ubuntu/websocket-sharp.dll b/websocket-sharp/bin/Debug_Ubuntu/websocket-sharp.dll
index 3c35b036..25477feb 100755
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index 3ed8a745..747ffa0a 100644
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diff --git a/websocket-sharp/bin/Release/websocket-sharp.dll b/websocket-sharp/bin/Release/websocket-sharp.dll
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diff --git a/websocket-sharp/websocket-sharp.pidb b/websocket-sharp/websocket-sharp.pidb
index 97a57b89..d9d181d1 100644
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