利用ASP.NET兼容模式创建支持会话的WCF服务

<system.serviceModel>
  <behaviors>
    <serviceBehaviors>
      <behavior name="MyServiceBehavior">
        <serviceMetadata httpGetEnabled="true"/>
        <serviceDebug includeExceptionDetailInFaults="false"/>
        <serviceThrottling maxConcurrentCalls="16" maxConcurrentSessions="10" maxConcurrentInstances="2147483647"/>
      </behavior>
    </serviceBehaviors>
  </behaviors>

  <services>
    <service name="MyNamespace.MyService" behaviorConfiguration="MyServiceBehavior">
      <endpoint address="" binding="basicHttpBinding" contract="MyNamespace.IMyService"/>
      <host>
        <baseAddresses>
          <add baseAddress="http://localhost:8000/MyService"/>
        </baseAddresses>
      </host>
    </service>
  </services>

  <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
</system.serviceModel>

[ServiceContract]
public interface IMyService
{
    [OperationContract]
    string GetData(int value);
}

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]
public class MyService : IMyService
{
    private static Dictionary<string, string> sessionData = new Dictionary<string, string>();

    [OperationContract]
    public string GetData(int value)
    {
        string sessionId = HttpContext.Current.Session.SessionID;
        if (!sessionData.ContainsKey(sessionId))
        {
            sessionData[sessionId] = "Initial Data";
        }
        return sessionData[sessionId];
    }
}

<system.webServer>
  <modules runAllManagedModulesForAllRequests="true">
    <add name="Session" type="System.Web.SessionState.SessionStateModule"/>
  </modules>
</system.webServer>

private static ConcurrentDictionary<string, string> sessionData = new ConcurrentDictionary<string, string>();