메시지 헤더는 SOAP 개념이고 SOAP 요청은 XML 문서이므로 실제로 XML이 필요합니다. 그러나 시나리오에서는 실제로 MessageHeaders
을 재정의 할 필요가 없으므로 아래 예제와 같이 관리자를 사용하여 해당 시점의 헤더를 간단하게 바꿀 수 있습니다 (XML 변환은 MessageHeader
클래스로 수행됩니다).
public class StackOverflow_7141998
{
[MessageContract]
public class MyMC
{
[MessageHeader(Name = "MyHeader", Namespace = "http://my.namespace.com")]
public string HeaderValue { get; set; }
[MessageBodyMember(Name = "MyBody", Namespace = "http://my.namespace.com")]
public string BodyValue { get; set; }
}
[ServiceContract]
public interface ITest
{
[OperationContract]
void Process(MyMC mc);
}
public class Service : ITest
{
public void Process(MyMC mc)
{
Console.WriteLine("Header value: {0}", mc.HeaderValue);
}
}
public class MyInspector : IEndpointBehavior, IClientMessageInspector
{
public string NewHeaderValue { get; set; }
public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
{
}
public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
{
clientRuntime.MessageInspectors.Add(this);
}
public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
{
}
public void Validate(ServiceEndpoint endpoint)
{
}
public void AfterReceiveReply(ref Message reply, object correlationState)
{
}
public object BeforeSendRequest(ref Message request, IClientChannel channel)
{
int originalIndex = request.Headers.FindHeader("MyHeader", "http://my.namespace.com");
if (originalIndex >= 0)
{
request.Headers.Insert(originalIndex, MessageHeader.CreateHeader("MyHeader", "http://my.namespace.com", this.NewHeaderValue));
request.Headers.RemoveAt(originalIndex + 1);
}
return null;
}
}
public static void Test()
{
string baseAddress = "http://" + Environment.MachineName + ":8000/Service";
ServiceHost host = new ServiceHost(typeof(Service), new Uri(baseAddress));
ServiceEndpoint endpoint = host.AddServiceEndpoint(typeof(ITest), new WSHttpBinding(), "");
host.Open();
Console.WriteLine("Host opened");
ChannelFactory<ITest> factory = new ChannelFactory<ITest>(new WSHttpBinding(), new EndpointAddress(baseAddress));
MyInspector inspector = new MyInspector { NewHeaderValue = "Modified header value" };
factory.Endpoint.Behaviors.Add(inspector);
ITest proxy = factory.CreateChannel();
proxy.Process(new MyMC { HeaderValue = "Original header value", BodyValue = "The body" });
((IClientChannel)proxy).Close();
factory.Close();
Console.Write("Press ENTER to close the host");
Console.ReadLine();
host.Close();
}
}