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Looking for some guidance on handling file uploads to my ktor server properly. I'm sending an InputStream from the client using `InputProvider() {inputStream.asInput()}` in a MultiPartFormDataContent body.

*Is there a way to handle the stream on the server immediately (such as piping to a file or other storage service) instead of waiting for the client to finish sending the data entirely?* 

My initial attempt was to use `call.receiveMultipart()` and then invoke `part.streamProvider().buffered().use { //etc }`on the FileItem part. However, it seems like the call.ReceiveMultipart() waits for an entire part to be received before doing any processing on it (such as within a multipartData.forEachPart  {} block)

Starting from Ktor 3.0.0-beta-1 the `FileItem.provider` method returns a `ByteReadChannel`  , so the part's body isn't entirely read upon receipt.

Oh nice - that sounds promising! The multipart functions have a lot of nice features, so I'll likely switch over once there's a koin-ktor release compatible with ktor 3