WCF + Silverlight + HttpContext.Current.Session is null - silverlight

Question

my problem....
i am tryingo to access session from Silverlight and WCF basicHttpBinding...
i saw some posts where it's possible (http://www.dotnetspider.com/Silverlight-Tutorial-317.aspx)
Mys cenario is:
Silvelright 4 FW 3.5
in web.config i have
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name="ViewModelDemo.Web.Service1Behavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="false" />
</behavior>
</serviceBehaviors>
</behaviors>
<services>
<service behaviorConfiguration="ViewModelDemo.Web.Service1Behavior" name="ViewModelDemo.Web.Service1">
<endpoint address="" binding="basicHttpBinding" contract="ViewModelDemo.Web.Service1">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
</service>
</services>
</system.serviceModel>
and my service:
[ServiceContract]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
[ServiceBehavior(IncludeExceptionDetailInFaults = true)]
public class Service1
{
[OperationContract]
publicvoid Test()
{
var session = System.Web.HttpContext.Current.Session;
}
}
and it''s call
var client = new Service1Client();
client.GetUserMacroFunctionsCompleted += new System.EventHandler<GetUserMacroFunctionsCompletedEventArgs>(client_GetUserMacroFunctionsCompleted);
client.GetUserMacroFunctionsAsync();
void client_GetUserMacroFunctionsCompleted(object sender, GetUserMacroFunctionsCompletedEventArgs e)
{
var test = ((Collection<Function>)e.Result);
}
HttpContext.Current is always null!
Any suggestions?

Answer 1

Yes HttpContext must be always null because your service configuration doesn't setup ASP.NET compatibility and your service doesn't require ASP.NET compatibility.
Add this to your configuration:
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" />
And change AspNetCompatibilityRequirements so that your service cannot be hosted without former configuration:
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]

Answer 2

This link probably to help you.
http://blogs.msdn.com/b/sajay/archive/2006/08/03/687361.aspx
aspNetCompatibilityEnabled="true" doesn't help me till I set allowCookies="true" on the client binding configuration.

Answer 3

Update your web.config file to include
<system.serviceModel>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" />
</system.serviceModel>
This should work, or else also change the AspNetCompatibilityRequirementsMode attribute on the contract to Required.