Sample WCF message inspector to hook up nhibernate session binding/unbinding from the WcfOperationSessionContext

UowDispatchMessageInspector.cs

// this code was simplified for the purpose of beeing a sample
public class UowDispatchMessageInspector : IDispatchMessageInspector
{
	private readonly ISessionFactory factory;
	
	public UowDispatchMessageInspector(ISessionFactory factory)
	{
		this.factory = factory;
	}		
	
	public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext)
	{
		try
		{
			CurrentSessionContext.Bind(factory.OpenSession());
		}
		catch (Exception x)
		{
			// if we throw anything other than FaultException service crashes.
			throw new FaultException(x.Message);
		}

		return request.Headers.Action;
	}

	public void BeforeSendReply(ref Message reply, object correlationState)
	{
		try
		{
			ISession session = CurrentSessionContext.Unbind(factory);
			session.Dispose();
		}
		catch (Exception x)
		{
			if (log.IsErrorEnabled) log.Error("Error commiting Unit Of Work", x);
			reply = Message.CreateMessage(reply.Version, new FaultCode("Error"),x.Message, reply.Headers.Action);
			// rethrowing crashes the service.
		}
	}
}