Empty attributes namespace with parent node namespace #1066

ach1819 · 2024-06-07T17:37:37Z

Hello,

I'm creating an API to expose as a SOAP service, and I need to comply with a structure for my request.

<Envelope xmlns="http://schemas.xmlsoap.org/soap/envelope/">
    <Body>
        <Operation xmlns="https://example.com">
            <fileName xmlns="">[string?]</fileName>
            <contentFile xmlns="">[base64Binary?]</contentFile>
        </Operation>
    </Body>
</Envelope>

As you can see I have an Operation node with a namespace, this node has two attributes with an empty namespace.

<fileName xmlns="">[string?]</fileName>
<contentFile xmlns="">[base64Binary?]</contentFile>

Trying to fit with this request my code looks like,

my files

app
.UseRouting()
.UseEndpoints(endpoint =>
{
	endpoint.UseSoapEndpoint<IMyService>(
	"/my-custom-path/myService.svc", 
	new SoapEncoderOptions(), SoapSerializer.DataContractSerializer);
});

[ServiceContract(Name = "MyService", Namespace = "https://example.com")]
public interface IMyService
{
   [OperationContract(Name = "Operation")]
   Task<IActionResult> PostAsync(SendBillRequest sendBillRequestFields);
}

[DataContract(Namespace = "https://should-be-empty")]
public class PostRequestFields 
{
   [DataMember]
   public string FileName { get; set; }

   [DataMember]
   public string ContentFile { get; set; }
}

  
[DataContract(Name = "Operation", Namespace = "https://example.com")]
public class PostRequest : PostRequestFields { }

  
public partial class MyService : IMyService
{

   public Task<IActionResult> PostAsync(PostRequest postRequest)
   {
         return Task.FromResult<IActionResult>(new OkResult());
   }
}

The problems come here

With the above config I got,

<Envelope xmlns="http://schemas.xmlsoap.org/soap/envelope/">
    <Body>
        <Operation xmlns="https://example.com">
            <ContentFile xmlns="https://should-be-empty">[string?]</ContentFile>
            <FileName xmlns="https://should-be-empty">[string?]</FileName>
        </Operation>
    </Body>
</Envelope>

which is almost close, the only problem I have it's I can't set an empty namespace if I try this

[DataContract(Namespace = "")]
public class PostRequestFields 
{
   [DataMember]
   public string FileName { get; set; }

   [DataMember]
   public string ContentFile { get; set; }
}

I got an error,

An unhandled exception occurred while processing the request.

ArgumentException: Cannot use a prefix with an empty namespace.
System.Xml.XmlWellFormedWriter.WriteEndAttribute()

if I try with namespace as null

[DataContrect(Namespace = null)]

I got,

An unhandled exception occurred while processing the request.

ArgumentNullException: Value cannot be null. (Parameter 'key')
System.Collections.Generic.Dictionary<TKey, TValue>.TryInsert(TKey key, TValue value, InsertionBehavior behavior)

Do you know how may I achieve my goal?

andersjonsson · 2024-06-13T07:09:44Z

The namespace from DataContractAttribute is only used in the wsdl, so I don't think that is the way to go.
You are more than welcome to debug your way through the source to see if you can figure out a nice way to support this scenario.

Otherwise you can use an ISoapMessageProcessor so remove the namespaces from the messages on the way out.

ach1819 · 2024-06-13T09:01:58Z

Thank you very much for your response.

I tried with ISoapMessageProcessor but I can't control the serializer before the service creation that allows to map the wsdl. I think I'm going to make the debug.

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Empty attributes namespace with parent node namespace #1066

Empty attributes namespace with parent node namespace #1066

ach1819 commented Jun 7, 2024 •

edited

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An unhandled exception occurred while processing the request.

An unhandled exception occurred while processing the request.

andersjonsson commented Jun 13, 2024

ach1819 commented Jun 13, 2024

Empty attributes namespace with parent node namespace #1066

Empty attributes namespace with parent node namespace #1066

Comments

ach1819 commented Jun 7, 2024 • edited Loading

my files

An unhandled exception occurred while processing the request.

An unhandled exception occurred while processing the request.

andersjonsson commented Jun 13, 2024

ach1819 commented Jun 13, 2024

ach1819 commented Jun 7, 2024 •

edited

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