.Net System.ServiceModel.Channels.Message.CreateMessage(...) not writing body - wcf

Question

I am trying to write some unit tests for a SOAP Router that I have created and need to sent a Message to the system under test that has specific values in the body that are being checked.
I am able hit the system under test but the result is always false.
Below is the code that I am using to try and build up the message
public Message CreateValidGetProposalListMessage()
{
var sb = new StringBuilder();
sb.AppendLine("<soapenv:Envelope xmlns:exsl=\"http://exslt.org/common\" xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:soapenc=\"http://schemas.xmlsoap.org/soap/encoding/\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">");
sb.AppendLine(" <s:Header xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\">");
sb.AppendLine(" <To s:mustUnderstand=\"1\" xmlns=\"http://schemas.microsoft.com/ws/2005/05/addressing/none\">https://localhost:44321/routingService</To>");
sb.AppendLine(" <Action s:mustUnderstand=\"1\" xmlns=\"http://schemas.microsoft.com/ws/2005/05/addressing/none\">getList</Action>");
sb.AppendLine(" </s:Header>");
sb.AppendLine(" <soapenv:Body>");
sb.AppendLine(" <getList xmlns=\"http://xxx">");
sb.AppendLine(" <code>xxx</code>");
sb.AppendLine(" </getList>");
sb.AppendLine(" </soapenv:Body>");
sb.AppendLine("</soapenv:Envelope>");
var ms = new MemoryStream(Encoding.UTF8.GetBytes(sb.ToString()));
var xdr = XmlDictionaryReader.CreateTextReader(ms, new XmlDictionaryReaderQuotas());
var newMessage = Message.CreateMessage(xdr, int.MaxValue, MessageVersion.Soap11);
return newMessage;
}
With this code the message is created, however the body always returns like this
<soapenv:Body>... stream ...</soapenv:Body>
I have a total of 9 tests that I need to write to complete the test conditions and am failing on the first because the body of the message is not being written.
I appreciate this might not be the correct approach and would be grateful if anyone could help me get this right.
I have also seen this but cannot get this to work either WCF message body showing <s:Body>... stream ...</s:Body> after modification
thanks
Simon

Answer 1

After creating a message using the CreateMessage(XmlReader, Int32, MessageVersion) method, you can use the GetBody method to read the body of the message.
For more information about CreateMessage,Please refer to this link.
You can also get the message content through System.Xml.XmlWriter after getting the message:
MessageBuffer buffer = newMessage.CreateBufferedCopy(Int32.MaxValue);
Message msg = buffer.CreateMessage();
StringBuilder sbb = new StringBuilder();
using (System.Xml.XmlWriter xx = System.Xml.XmlWriter.Create(sbb))
{
msg.WriteMessage(xx);
xx.Close();
}
Console.WriteLine(sbb);
The result of running:
UPDATE
Here is my Demo:
public void BeforeSendReply(ref Message reply, object correlationState)
{
var sb = new StringBuilder();
sb.AppendLine("<soapenv:Envelope xmlns:exsl=\"http://exslt.org/common\" xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:soapenc=\"http://schemas.xmlsoap.org/soap/encoding/\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">");
sb.AppendLine(" <s:Header xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\">");
sb.AppendLine(" <To s:mustUnderstand=\"1\" xmlns=\"http://schemas.microsoft.com/ws/2005/05/addressing/none\">https://localhost:44321/routingService</To>");
sb.AppendLine(" <Action s:mustUnderstand=\"1\" xmlns=\"http://schemas.microsoft.com/ws/2005/05/addressing/none\">getList</Action>");
sb.AppendLine(" </s:Header>");
sb.AppendLine(" <soapenv:Body>");
sb.AppendLine(" <getList xmlns=\"http://xxx\" > ");
sb.AppendLine(" <code>xxx</code>");
sb.AppendLine(" </getList>");
sb.AppendLine(" </soapenv:Body>");
sb.AppendLine("</soapenv:Envelope>");
var ms = new MemoryStream(Encoding.UTF8.GetBytes(sb.ToString()));
var xdr = XmlDictionaryReader.CreateTextReader(ms, new XmlDictionaryReaderQuotas());
var newMessage = Message.CreateMessage(xdr, int.MaxValue, MessageVersion.Soap11);
MessageBuffer messageBuffer = newMessage.CreateBufferedCopy(int.MaxValue);
Message message = messageBuffer.CreateMessage();
reply = message;
}
In the gif, you can see that the client received the Message I customized on the server.