Pub.client:http with mutiform-data

Hi Wang Tong,

I have tried to put like following:
MimeHeader
*) thread_input = json file name.
*) content-type= application/json.

It still having the 415 result instead of 201.
Looks like the Header format somehow is not accepted by target system.

Appreciate any idea how to make this works?

Thank you,
Fanny T