html5 websocket在线聊天

用html5 websocket 做的聊天室，怎么设置让客户端在知道服务器端的ip情况下，还是连不上呀！也就是说怎么对客户端进行身份验证？

楼主下的是http://www.ibm.com/developerworks/cn/web/1112_huangxa_websocket/这个地址的示例？如果是修改WebSocketsServer.cs这个文件里面的代码，增加客户端ip地址的判断，主要是获取客户端ip地址，然后判断ip是否允许连接

            while (true)
            {
                Socket sc = Listener.Accept();
                if (sc != null)
                {
                    IPEndPoint cip = (IPEndPoint)sc.RemoteEndPoint;
                    string ipaddr = cip.Address.ToString();

                    if (ipaddr == "192.168.1.68")//这里改为你的其他判断，如读数据库中存在的ip地址对比什么的，在禁止ip列表里面就关闭连接
                        sc.Close();
                    else
                    {
                        System.Threading.Thread.Sleep(100);
                        SocketConnection socketConn = new SocketConnection();
                        socketConn.ConnectionSocket = sc;
                        socketConn.NewConnection += new NewConnectionEventHandler(socketConn_NewConnection);
                        socketConn.DataReceived += new DataReceivedEventHandler(socketConn_BroadcastMessage);
                        socketConn.Disconnected += new DisconnectedEventHandler(socketConn_Disconnected);

                        socketConn.ConnectionSocket.BeginReceive(socketConn.receivedDataBuffer,
                                                                 0, socketConn.receivedDataBuffer.Length,
                                                                 0, new AsyncCallback(socketConn.ManageHandshake),
                                                                 socketConn.ConnectionSocket.Available);
                        connectionSocketList.Add(socketConn);

                    }
                }
            }

身份验证是主动的，也就是应该有一个登录界面，提交成功后方可进入