Fix for issue #4

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 />

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; }