如何解决 Soap header 动作不理解？

Question

I'm developing on VS2008 for Windows Mobile 6.5 Professional I get this error message "Soap header action not understood"

I see a lot of post on the subject but none for Windows Mobile.

Any help would be appreciated.

Link to the URL with the XML data

https://silulumanzi.4most.co.za:4343/SIZA.svc?wsdl

How Rene and what silulumanzi.4most.co.za:4343/SIZA.svc suggested?

public void GetOpenPO()
    {
        //Get open purchase order numbers and populate combo box

        try
        {
            BasicHttpBinding binding = new BasicHttpBinding();
            binding.Security.Mode = BasicHttpSecurityMode.Transport;
            binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.None;
            //binding.Security.Transport.ProxyCredentialType = HttpProxyCredentialType.None;
            EndpointAddress ea = new EndpointAddress(new Uri("https://silulumanzi.4most.co.za:4343/SIZA.svc?wsdl"));

            SizaWS.SIZA client = new SizaWS.SIZA();

            string[] Response = client.GetOpenPO();

            //Popuplate combo box with data received from web service
            comboBox2.Items.Add("");
            for (int i = 0; i < Response.Length; i++)
            {
                if ((!String.IsNullOrEmpty(Response[i])))
                {
                    comboBox2.Items.Add(Response[i]);
                }
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "Error");
        }
    }

No service reference

Config File I added

<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.serviceModel>
<bindings>
  <wsHttpBinding>
    <binding name="WSHttpBinding_ISIZA" closeTimeout="00:01:00" openTimeout="00:01:00"
        receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false"
        transactionFlow="false" hostNameComparisonMode="StrongWildcard"
        maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
        messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
        allowCookies="false">
      <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
          maxBytesPerRead="4096" maxNameTableCharCount="16384" />
      <reliableSession ordered="true" inactivityTimeout="00:10:00"
          enabled="false" />
      <security mode="Transport">
        <transport clientCredentialType="None" proxyCredentialType="None"
            realm="" />
        <message clientCredentialType="Windows" negotiateServiceCredential="true"
            establishSecurityContext="true" />
      </security>
    </binding>
  </wsHttpBinding>
</bindings>
<client>
  <endpoint address="https://silulumanzi.4most.co.za:4343/SIZA.svc"
      binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_ISIZA"
      contract="ISIZA" name="WSHttpBinding_ISIZA" />
</client>
</system.serviceModel>
</configuration>

Error List

The version System.ServiceModel

Answer 1

I don't have a fully working VS2008 but I've reproduced your problem and here are the steps to resolve the problem you face for one specific call, in this case GetOpenPO. It is a hack. I can't find a better solution for now.

First of all, get rid of the Web Refence and the Service Reference and any files you added based on my comments.

Add the textfile 'GenClient.xml' to your project and enter the following options (based on documentation found here )

<?xml version="1.0" encoding="utf-8" ?>
<wsdlParameters xmlns="http://microsoft.com/webReference/">
  <webReferenceOptions>
    <verbose>false</verbose>
    <codeGenerationOptions>properties oldAsync</codeGenerationOptions>
    <style>client</style>
  </webReferenceOptions>
</wsdlParameters>

After saving this achieves that the service client gets generate with.Net 1.1 style Begin/EndInvoke methods, omitting any use of System.Threading.

Open the Visual Studio 2008 Command prompt. Change Directory to your project directory. Run the following command to generate a SIZA.cs class that will act as your soap client (it takes the earlier created and saved genclient.xml as parameters file):

This will overwrite your current SIZA.cs. Re-apply changes afterwards

wsdl /out:SIZA.cs /protocol:soap12 /parameters:genclient.xml https://silulumanzi.4most.co.za:4343/SIZA.svc?wsdl

You will now have a SIZA.cs file in your project folder.

Open your project in Visual Studio 2008. In the solution explorer, right-click your project, Add Existing Item and in the filedialog and find the SIZA.cs in your project root folder.

In the solution Explorer, right click on References, choose "Add Reference", wait for the dialog to load and then from the.Net tab find and select assembly System.Web.Services, click OK.

Your solution should compile now without errors.

This is where the hack starts:/

In the SIZA.cs file find the following method:

public string[] GetOpenPO() {

Right before that method add this Attribute:

[System.Web.Services.Protocols.SoapHeader("Soap12HdrGetOpenPO", Direction = SoapHeaderDirection.InOut)]

Your end result should look like this:

/// <remarks/>    
[System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/ISIZA/GetOpenPO", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
[return: System.Xml.Serialization.XmlArrayAttribute(IsNullable=true)]
[return: System.Xml.Serialization.XmlArrayItemAttribute(Namespace="http://schemas.microsoft.com/2003/10/Serialization/Arrays")]

[System.Web.Services.Protocols.SoapHeader("Soap12HdrGetOpenPO", Direction = SoapHeaderDirection.InOut)]

public string[] GetOpenPO() {
    object[] results = this.Invoke("GetOpenPO", new object[0]);
    return ((string[])(results[0]));
}

Create a new Class file and name it: SIZA.Partial.cs

Add the following code in that new file, replacing everything that is in it:

using System.Web.Services.Protocols;
using System.Xml;

public partial class SIZA
{

    private SoapUnknownHeader CreateSoapAcionHeader(string hdr, string value)
    {
        var xd = new XmlDocument();
        var sh = new SoapUnknownHeader();
        sh.MustUnderstand = true;
        sh.Element = xd.CreateElement(hdr, "http://www.w3.org/2005/08/addressing");
        sh.Element.InnerText = value;
        return sh;
    }

    // this method gets called due to the added SoapHeader attribute
    public SoapUnknownHeader[] Soap12HdrGetOpenPO
    {
        get
        {
            return new[]
                {
                    CreateSoapAcionHeader("Action", "http://tempuri.org/ISIZA/GetOpenPO"), 
                    CreateSoapAcionHeader("To", this.Url), 
                };
        }
        set { /* empty */}
    }
}

This will basically add the missing SOAP12 Action and To header to the soap envelope for the GetOpenPO call. And that makes the WCF service you're calling happy as well.

Here is a fiddler screenshot of what gets exchanged on the wire:

The downside of this solution is that you need to do this manually for every public method in the SIZA client you want to use. Maybe someone else comes by and remembers how one of the extension points in the SoapHttpClientProtocol should be leveraged.