XMLHTTP and Asynchronous pluggable protocols

I've implemented an asynchronous pluggable protocol and I've noticed
something that I didn't expect. When it is handling a POST from a
XMLHTTP object I find that the POST data that my Start method gets is
in the TYMED_ISTREAM form instead of TYMED_HGLOBAL. What little
Microsoft documentation that I can find on handling POSTs in an APP
always shows POST data arriving as TYMED_HGLOBAL.

Has anyone had any experience with XMLHTTP through a pluggable
protocol? Could I be doing something wrong in my APP? If
TYMED_ISTREAM is normal is there any way to force IE to use
TYMED_HGLOBAL? I can use TYMED_ISTREAM but existing versions of my
program don't know about it and it would be nice to avoid it.

Thanks,
Bill

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