RAW Body with Multipart?

[JamesG-DPharos]

Question

Has anyone figured out how to get the RAW Body with multipart/form requests?

I have a requirement where I need to verify an HMAC header with the RAW Body of the request.
Setting the includeUnparsed flag doesn't do anything when multipart = true. Looking at the code Koa-Body skips that completely on multipart.

In addition, adding the raw-body package just clobbers body parser and results in a hang.
I tried piping the stream but that doesn't seem to work.

Eg:

var stream1 = REQ.pipe(new stream.PassThrough())

Ideas?