Without serving the client policy xml file you will get a SecurityException. Something along the lines of:
{System.Security.SecurityException ---> System.Security.SecurityException: Security error.
at MS.Internal.InternalWebRequest.Send()
at System.Net.BrowserHttpWebRequest.BeginGetResponseImplementation()
at System.Net.BrowserHttpWebRequest.InternalBeginGetResponse(AsyncCallback callback, Object state)
at System.Net.AsyncHelper.<>c__DisplayClass4.b__3(Object sendState) --- End of inner exception stack trace ---
at System.Net.AsyncHelper.BeginOnUI(BeginMethod beginMethod, AsyncCallback callback, Object state)
at System.Net.BrowserHttpWebRequest.BeginGetResponse(AsyncCallback callback, Object state)
at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelAsyncRequest.CompleteSend(IAsyncResult result)
at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelAsyncRequest.OnSend(IAsyncResult result)}
Here's a solution:
Information Source: Consuming a self-hosted WCF service in Silverlight
You need to modify you're WCF service app.config.
1 <?xml version="1.0" encoding="utf-8" ?>
2 <configuration>
3 <system.serviceModel>
4 <behaviors>
5 <serviceBehaviors>
6 <behavior name="enableMetaData" >
7 <serviceMetadata httpGetEnabled="true" />
8 </behavior>
9 </serviceBehaviors>
10 <endpointBehaviors>
11 <behavior name="webHttpBehavior">
12 <webHttp/>
13 </behavior>
14 </endpointBehaviors>
15 </behaviors>
16 <services>
17 <service name="SampleNamespace.MyService" behaviorConfiguration="enableMetaData">
18 <host >
19 <baseAddresses>
20 <add baseAddress="net.tcp://localhost:9000"/>
21 <add baseAddress="http://localhost:9001"/>
22 </baseAddresses>
23 </host>
24 <endpoint address="Calculator" binding="netTcpBinding" contract="SampleNamespace.IMyService" />
25 <endpoint address="Calculator" binding="basicHttpBinding" contract="SampleNamespace.IMyService" />
26 <endpoint address="" binding="webHttpBinding" behaviorConfiguration="webHttpBehavior" contract="SampleNamespace.IClientAccessPolicy" />
27 </service>
28 </services>
29 </system.serviceModel>
30 </configuration>
Add an endpoint to your service for the IClientAccessPolicy. It needs to be Http. Notice the behaviours are configured to allow http Get.[ServiceContract]public interface IClientAccessPolicy
{[OperationContract, WebGet(UriTemplate = "/clientaccesspolicy.xml")]
Stream GetClientAccessPolicy();}...
Add the implementation to the existing service...
public class MyService : IMyService, IClientAccessPolicy
{ //Existing code...public Stream GetClientAccessPolicy()
{const string result = @"<?xml version=""1.0"" encoding=""utf-8""?>
<access-policy> <cross-domain-access> <policy> <allow-from http-request-headers=""*""> <domain uri=""*""/> </allow-from> <grant-to> <resource path=""/"" include-subpaths=""true""/> </grant-to> </policy> </cross-domain-access></access-policy>";if (WebOperationContext.Current != null)
WebOperationContext.Current.OutgoingResponse.ContentType = "application/xml";
return new MemoryStream(Encoding.UTF8.GetBytes(result));
}
}
Navigating to http://localhost:9001/clientaccesspolicy.xml should give this result in your browser:<?xml version="1.0" encoding="utf-8"?>
<access-policy> <cross-domain-access> <policy> <allow-from http-request-headers="*"> <domain uri="*"/> </allow-from> <grant-to> <resource path="/" include-subpaths="true"/> </grant-to> </policy> </cross-domain-access> </access-policy>
