Server Error in '/' Application.

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Line 74:     {
Line 75:         System.Net.WebClient wc = new System.Net.WebClient();
Line 76:         byte[] data = wc.DownloadData(url);
Line 77:         return data;
Line 78:     }

[SocketException (0x274c): bob平台app_BOB体育平台官方_bob平台]
   System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) +225
   System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception) +279

[WebException: Unable to connect to the remote server]
   System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request) +290
   System.Net.WebClient.DownloadData(Uri address) +106
   System.Net.WebClient.DownloadData(String address) +29
   ASP.global_asax.get_data(String url) in d:\网站\web\Global.asax:76
   ASP.global_asax.Session_Start(Object sender, EventArgs e) in d:\网站\web\Global.asax:27
   System.Web.SessionState.SessionStateModule.RaiseOnStart(EventArgs e) +8889383
   System.Web.SessionState.SessionStateModule.CompleteAcquireState() +148
   System.Web.SessionState.SessionStateModule.BeginAcquireState(Object source, EventArgs e, AsyncCallback cb, Object extraData) +561
   System.Web.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +96
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184