title: websocket server and client using WebsocketSharp on localhost
body: <p>I am trying to write a simple client-server application using WebsocketSharp on the same device (localhost) but I keep getting a &quot;Not a Websocket handshake response.</p>
  <p>the client is set up like so:</p>
  <pre><code>private const int _port = 555;
   private static WebSocket _ws = new WebSocket(&quot;ws://&quot; + IPAddress.Loopback.ToString() + $&quot;:{_port}/websocket&quot; );
  </code></pre>
  <p>also tried with / WebSocket</p>
  <p>the server is set up like so</p>
  <pre><code>private const int _port = 555;
          private static  WebSocketServer _ws = new WebSocketServer(IPAddress.Loopback, _port);
  </code></pre>
  <p>thankyou</p>