Access a socket in a way forbidden by its access permissions

Question

Hi,

I have a Silverlight Web Application that needs to communicate with my server application for sending 
data through TCP Sockets. Each time try to connect I am getting an Access Denied SocketError message.

[http://localhost:50265/]
 
1- Silverlight 5 + .net framework 4 and Windows 7 pro + Visual Studio 2010
 
Error:
"ConnectByNameError = {System.Net.Sockets.SocketException: An attempt was made to access a socket in a way forbidden by its access permissions.}"
 
ClientAccessPolicy.xml:
<?xml version="1.0" encoding ="utf-8"?>

<access-policy>
    <cross-domain-access>
        <policy>
            <allow-from>
                <domain uri="*"/>
            </allow-from>
            <grant-to>
                <socket-resource port="4502-4506" protocol="tcp" />
            </grant-to>
        </policy>
    </cross-domain-access>
</access-policy>

Silverlight MainPage Code:

void OnLoaded(object sender, RoutedEventArgs e)
        {
            buffer = new byte[128];

            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream,
              ProtocolType.Tcp);

            SocketAsyncEventArgs args = new SocketAsyncEventArgs()
            {
                SocketClientAccessPolicyProtocol = SocketClientAccessPolicyProtocol.Http,
                RemoteEndPoint = new DnsEndPoint("localhost", 4502),
            };

            args.Completed += (s, eventArgs) =>
            {
                if (eventArgs.SocketError == SocketError.Success)
                {
                    this.connectedSocket = socket;
                    BeginRead();
                }
            };

            socket.ConnectAsync(args);
        }

Please advise how to resolve this issue? 

Thanks
http://www.prepareuktest.co.uk/ 

Answer 1

check below

http://social.msdn.microsoft.com/Forums/en-US/silverlightbugs/thread/14041053-550b-42b6-97c4-e5c9aff5bf97//1

http://social.msdn.microsoft.com/Forums/en-US/silverlighthosting/thread/473bc5aa-b9e8-44b8-9953-341d61ea8e14//1

http://msdn.microsoft.com/en-us/library/cc645032%28v=vs.95%29.aspx