multipart/alternative; boundary="----_=_NextPart_001_01C78A1B.0C541FC0"?????????????Can anyone explain this?

Answer 1

When you have a multipart form the major parts of the form are seperated by a boundary.
First you need to request the boundary. Then you split the data on the boundary.
You will now have something like
form data
file info and file data
form data

You now have to seperate each sub part to get at the data.