Sending a PDF file in a REST Message - intersystems-iris

Question

I am trying figure this out any help appreciated. Thanks in advance
The service is a file passthrough that picks up a PDF and then uses the BPL code below to create the rest wrapper and sends the stream data. I am not grabbing the stream from the inbound correctly, "request.Stream" or "request.StreamFC" always produces the following error.
Here is what is sent and returned in the message..
request:
*
<Stream>
15#%Library.FileCharacterStream
</Stream>
response:
<Stream>
Unable to load xml from message: Data at the root level is invalid. Line 1, position 1.
</Stream>
-I think my issue is I am not using the right class by using "%GlobalStreamCharacter", Or the raw PDF CDATA inbound I am not handling correctly
set context.RESTMessage.Stream=##class(%GlobalCharacterStream).%New()
I have tried using different Stream types...File, Binary....but no luck
-The general BPL below
/// BPL Definition
X
Data BPL [ XMLNamespace = "http://www.intersystems.com/bpl" ]
{
<process language='objectscript' request='Ens.StreamContainer' response='Ens.Response'
height='2000' width='2000' >
<context>
.....
.....
....
<code name='Create REST Message' xpos='200' ypos='250' >
<![CDATA[
set context.RESTMessage=##class(EnsLib.HTTP.GenericMessage).%New()
set context.RESTMessage.Stream=##class(%GlobalCharacterStream).%New()
set tSC=context.RESTMessage.Stream.Write(request.StreamFC)
set tSC=context.RESTMessage.HTTPHeaders.SetAt("application/xml","Content-Type")
set tSC=context.RESTMessage.HTTPHeaders.SetAt(context.RESTMessage.Stream.Size,"Content-
Length")
set tSC=context.RESTMessage.HTTPHeaders.SetAt("POST","HttpRequest")
]]>
</code>

Answer 1

You can try this code snippet. I got the answer in the community.
<call name='To application Rest' target='To application REST' async='0'>
<request type='EnsLib.REST.GenericMessage' >
<assign property="callrequest.Stream" value='##class(%Stream.GlobalCharacter).%New()'/>
<assign property="status" value='callrequest.Stream.CopyFrom(request.StreamFC)' action="set" />
<assign property="status" value='callrequest.HTTPHeaders.SetAt("application/xml", "Content-Type")' action="set" />
<assign property="status" value='callrequest.HTTPHeaders.SetAt(callrequest.Stream.Size, "Content-Length")' action="set" />
<assign property="status" value='callrequest.HTTPHeaders.SetAt("POST", "HttpRequest")' action="set" />
</request>
</call>