MS SOAP Toolkit 3.0: Saving before sending

I haven't seen a simple example on how to save a copy before sending
the soap message using the low API of ms soap toolkit 3.0 (httpconnector30, soapserializer30
and soapreader30). I'm guessing the problem is that I'm not familiar with win32 istreams in general

Could anyone be kind and provide me an example on how to save the XML
that is being sent by a client to disk before sending?

usually serializer takes an istream, which is provided by
httpconnector inputstream, perhaps something should be in between to
intercept as a proxy.

Use visual basic syntax, that way it is easier for me to translate it
to the programming interface I'm using... some code snippets are provided below

Thanks in advance..

ps. I searched the web, only found someone else asking the same thing here:
http://objectmix.com/xml-soap/88869-reading-istream-vb.html

Connector.BeginMessage;
 
CREATE(Serializer);
Serializer.Init (Connector.InputStream); <-- use some other istream here?
 
Serializer.StartEnvelope ('soap','NONE','utf-8');
 
For the response I usaually use MSXML DomDocument
 
XMLDOM.load (Connector.OutputStream);
XMLDOM.save path
 
XMLDOM being MSXML DomDocument. I'm not sure how to use XMLDOM.QueryInterface, if that can be used...

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