Parse/deserialize MTOM/XOP Data .NET

Question

¿Cómo puedo analizar/deserializar una respuesta MTOM/XOP que obtengo de un servicio web utilizando WCF? Tengo la respuesta en el disco. He copiado la respuesta a continuación:

Date: Wed, 02 May 2012 09:38:57 GMT 
Server: Microsoft-IIS/6.0 
P3P:CP="BUS CUR CONo FIN IVDo ONL OUR PHY SAMo TELo" 
X-Powered-By: ASP.NET 
X-AspNet-Version: 4.0.30319 
X-WindowsLive-Hydra: H: BLU165-ds6 V: 16.3.133.328 D: 2012-03-29T02:31:31 
X-Response-Time: 78.1245 
X-TransactionID: d491414e-46fd-47b2-82ce-e9cea9f564aa;BLU165-ds6;16.3.133.328;2012-05-02 09:38:57 UTC;78.1245 ms 
Set-Cookie: HMDST=dGVhcG90ZG9tZYtZm3GzLm1r3f+/q8+gdzrAPYmy9kJ+SmDZuFmVgk3E983xNyeoTZkkdIr6t8y3P4V+vPzmytdaqqFwtI8vBuc=; domain=.mail.services.live.com; path=/ 
Cache-Control: no-cache 
Pragma: no-cache 
Expires: -1 
Content-Type: application/xop+xml 
Content-Length: 6386 

MIME-Version: 1.0 
Content-Type: Multipart/Related;boundary=DeltaSync91ABCB4AF5D24B8F988B77ED7A19733D?MTOM; 
    type="application/xop+xml"; 
    start="<DeltaSyncMTOMFetchResponse@mail.services.live.com>"; 

--DeltaSync91ABCB4AF5D24B8F988B77ED7A19733D?MTOM 
content-transfer-encoding: binary 
content-type: application/xop+xml; charset=utf-8; type="application/xop+xml" 
content-id: <DeltaSyncMTOMFetchResponse@mail.services.live.com> 

<ItemOperations xmlns:xop="http://www.w3.org/2004/08/xop/include" xmlns:B="HMMAIL:" xmlns:D="HMSYNC:" xmlns="ItemOperations:"><Status>1</Status><Responses><Fetch><ServerId>E631966A-9439-11E1-8E7B-00215AD9A7B8</ServerId><Status>1</Status><Message><xop:Include href="cid:1.634715231374437235@example.org" /></Message></Fetch></Responses></ItemOperations> 
--DeltaSync91ABCB4AF5D24B8F988B77ED7A19733D?MTOM 
content-transfer-encoding: binary 
content-type: application/octet-stream 
content-id: <1.634715231374437235@example.org> 

....Binary Content 
--DeltaSync91ABCB4AF5D24B8F988B77ED7A19733D?MTOM-- 

Cualquier ayuda es muy apreciada.

Answer 1

Puede deserializar la respuesta utilizando las clases de WCF, como mostraré a continuación. Pero antes de continuar, este MTOM no es válido: el parámetro boundary del encabezado Content-Type está mal formado. Como contiene el '?' carácter, necesita ser citado (consulte MIME RFC, sección 5.1, definición de token).

Ahora, para deserializarlo, debe abrir el documento con un lector MTOM, y XmlDictionaryReader.CreateMtomReader le dará exactamente eso. Con ese lector creado, puede pasarlo al DataContractSerializer para deserializar el objeto. El siguiente código muestra cómo se puede hacer esto.

public class StackOverflow_10531128 
    { 
     const string MTOM = @"MIME-Version: 1.0 
Content-Type: Multipart/Related;boundary=DeltaSync91ABCB4AF5D24B8F988B77ED7A19733D?MTOM; 
    type=""application/xop+xml""; 
    start=""<DeltaSyncMTOMFetchResponse@mail.services.live.com>""; 

--DeltaSync91ABCB4AF5D24B8F988B77ED7A19733D?MTOM 
content-transfer-encoding: binary 
Content-Type: application/xop+xml; charset=utf-8; type=""application/xop+xml"" 
content-id: <DeltaSyncMTOMFetchResponse@mail.services.live.com> 

<ItemOperations xmlns:xop=""http://www.w3.org/2004/08/xop/include"" xmlns:B=""HMMAIL:"" xmlns:D=""HMSYNC:"" xmlns=""ItemOperations:""> 
    <Status>1</Status> 
    <Responses> 
     <Fetch> 
      <ServerId>E631966A-9439-11E1-8E7B-00215AD9A7B8</ServerId> 
      <Status>1</Status> 
      <Message><xop:Include href=""cid:1.634715231374437235@example.org"" /></Message> 
     </Fetch> 
    </Responses> 
</ItemOperations> 
--DeltaSync91ABCB4AF5D24B8F988B77ED7A19733D?MTOM 
content-transfer-encoding: binary 
Content-Type: application/octet-stream 
content-id: <1.634715231374437235@example.org> 

this is a binary content; it could be anything but for simplicity I'm using text 
--DeltaSync91ABCB4AF5D24B8F988B77ED7A19733D?MTOM--"; 

     [DataContract(Name = "ItemOperations", Namespace = "ItemOperations:")] 
     public class ItemOperations 
     { 
      [DataMember(Order = 1)] 
      public int Status { get; set; } 
      [DataMember(Order = 2)] 
      public Responses Responses { get; set; } 
     } 

     [CollectionDataContract(Name = "Responses", Namespace = "ItemOperations:", ItemName = "Fetch")] 
     public class Responses : List<Fetch> 
     { 
     } 

     [DataContract(Name = "Fetch", Namespace = "ItemOperations:")] 
     public class Fetch 
     { 
      [DataMember(Order = 1)] 
      public Guid ServerId { get; set; } 
      [DataMember(Order = 2)] 
      public int Status { get; set; } 
      [DataMember(Order = 3)] 
      public byte[] Message { get; set; } 
     } 

     public static void Test() 
     { 
      MemoryStream ms; 
      ItemOperations obj; 
      DataContractSerializer dcs = new DataContractSerializer(typeof(ItemOperations)); 

      string fixedMtom = MTOM.Replace(
       "Multipart/Related;boundary=DeltaSync91ABCB4AF5D24B8F988B77ED7A19733D?MTOM;", 
       "Multipart/Related;boundary=\"DeltaSync91ABCB4AF5D24B8F988B77ED7A19733D?MTOM\";"); 
      ms = new MemoryStream(Encoding.UTF8.GetBytes(fixedMtom)); 
      XmlDictionaryReader reader = XmlDictionaryReader.CreateMtomReader(ms, Encoding.UTF8, XmlDictionaryReaderQuotas.Max); 
      obj = (ItemOperations)dcs.ReadObject(reader); 
      Console.WriteLine(obj.Status); 
      Console.WriteLine(obj.Responses.Count); 
      foreach (var resp in obj.Responses) 
      { 
       Console.WriteLine(" {0}", resp.ServerId); 
       Console.WriteLine(" {0}", resp.Status); 
       Console.WriteLine(" {0}", string.Join(" ", resp.Message.Select(b => string.Format("{0:X2}", (int)b)))); 
      } 
     } 
    }