Home/ Questions/Q 155741
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-11T10:12:33+00:00

I’ve a WCF client communicating with an unknown server implementation which I have no

  • 0

I’ve a WCF client communicating with an unknown server implementation which I have no control over. This client works fine it just doesn’t like, what appears to be, incorrectly formed SOAP Fault messages. The messages I receive look like:

 <soap:Envelope xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'>        <soap:Header>...</soap:Header>       <soap:Body>           <soap:Fault>               <soap:faultcode>soap:Client</soap:faultcode>               <soap:faultstring>...</soap:faultstring>               <soap:detail>...</soap:detail>           </soap:Fault>       </soap:Body>   </soap:Envelope>

I believe according to the soap schema the child elements shouldn’t be qualified and ned to look like:

 <soap:Envelope xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'>        <soap:Header>...</soap:Header>       <soap:Body>           <soap:Fault>               <faultcode>soap:Client</faultcode>               <faultstring>...</faultstring>               <detail>...</detail>           </soap:Fault>       </soap:Body>  </soap:Envelope>

Is there something that I can configure or override so that I can consume messages which arrive in the latter format so that I can consume the fault messages instead of xml exceptions?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. I’m cannot recall how I found stumbled across Message Inspectors, but that it how I solved my problem.

    This and this article provided the base for creating the inspector, and what follows is the meat of the inspector:

     public void AfterReceiveReply(ref Message reply, object correlationState) {     if (!reply.IsFault)         return;      var document = new XmlDocument();      document.Load(reply.GetReaderAtBodyContents());      var navigator = document.CreateNavigator();     var manager = new XmlNamespaceManager(navigator.NameTable);      manager.AddNamespace('soap', 'http://schemas.xmlsoap.org/soap/envelope/');      var it = navigator.Select('//soap:Fault', manager);      if (it.MoveNext() && it.Current.HasChildren && it.Current.MoveToChild(XPathNodeType.Element))     {         do         {             var c = it.Current;              if (string.IsNullOrEmpty(c.Prefix))                 continue;              c.ReplaceSelf('<' + c.LocalName + '>' + c.InnerXml + '</' + c.LocalName + '>');              /// we may want to record the detail included inside the detail element,              /// it is not reported in the FaultException that is raised.          } while (it.Current.MoveToNext());     }      var reader = XmlDictionaryReader.CreateDictionaryReader(new XmlNodeReader(document));      reader.MoveToStartElement();      var fixedReply = Message.CreateMessage(reply.Version, null, reader);      fixedReply.Headers.CopyHeadersFrom(reply.Headers);     fixedReply.Properties.CopyProperties(reply.Properties);      reply = fixedReply; }
    • 0