I have an input stream payload with data from a file. The file can be very big. I'm sending the input stream to an http/https outbound endpoint. However, I'd like to also send metadata with the contents of the file, such as the file name and possibly other key/pair values in the post request.
If I have an input stream, and also a few strings which I want to send as a single post data, what would I need to do with Mule on the payload in order to have them all sent properly?