防止添加“To”SOAP 标头

Question

我在 C# 客户端中创建的 SOAP 标头有问题。服务器正在发回错误

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
  <s:Header xmlns:s="http://www.w3.org/2003/05/soap-envelope" />
  <soap:Body>
    <soap:Fault>
      <soap:Code>
        <soap:Value>soap:MustUnderstand</soap:Value>
      </soap:Code>
      <soap:Reason>
        <soap:Text xml:lang="en">MustUnderstand headers: [{http://www.w3.org/2005/08/addressing}To] are not understood.</soap:Text>
      </soap:Reason>
    </soap:Fault>
  </soap:Body>
</soap:Envelope>

我的印象是我已经使用以下代码删除了所有 SOAP 标头。

internal class CustomMessageInspector : IEndpointBehavior, IClientMessageInspector
{
    public object BeforeSendRequest( ref Message request, IClientChannel channel )
    {
        request.Headers.Clear();
        return null;
    }
    ...
 }

但是，在 app.config 中激活 System.ServiceModel.MessageLogging 后（WCF - 检查正在发送/接收的消息？），我看到服务器是正确的 - 你瞧，有一个带有“mustUnderstand”的“To”标头设置为 1 ：

<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing">
<s:Header>
<a:To s:mustUnderstand="1">https://ws-single-transactions-int-bp.nmvs.eu:8443/WS_SINGLE_TRANSACTIONS_V1/SinglePackServiceV30</a:To>
</s:Header>

有什么想法可以阻止添加此标头吗？

非常感谢。

Answer 1

如果它对其他人有帮助，我已经找到了解决方案。事实上，Nicolas Giannane在 .NetStandard 或 .NET core 中提供了 WSHttpBinding所需的所有代码。我们能做的就是将 WSHttpBinding 替换为基于 WSHttpBinding 的自定义绑定，然后将 TextMessageEncodingBindingElement 替换为不带寻址的绑定。这是代码：

    string endPoint = myConfig.SinglePackServicesEndPoint;

    //Defines a secure binding with certificate authentication
    WSHttpBinding binding = new WSHttpBinding();
    binding.Security.Mode = SecurityMode.Transport;
    binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.Certificate;

    // create a new binding based on the existing binding
    var customTransportSecurityBinding = new CustomBinding( binding );
    // locate the TextMessageEncodingBindingElement - that's the party guilty of the inclusion of the "To"
    var ele = customTransportSecurityBinding.Elements.FirstOrDefault( x=>x is TextMessageEncodingBindingElement );
    if( ele != null )
    {
        // and replace it with a version with no addressing
        // replace {Soap12 (http://www.w3.org/2003/05/soap-envelope) Addressing10 (http://www.w3.org/2005/08/addressing)}
        //    with {Soap12 (http://www.w3.org/2003/05/soap-envelope) AddressingNone (http://schemas.microsoft.com/ws/2005/05/addressing/none)}
        int index = customTransportSecurityBinding.Elements.IndexOf( ele );
        var textBindingElement = new TextMessageEncodingBindingElement
        {
            MessageVersion = MessageVersion.CreateVersion(EnvelopeVersion.Soap12, AddressingVersion.None)
        };
        customTransportSecurityBinding.Elements[index] = textBindingElement;
    }