How to use curl upload one image file using “Content-Type: multipart/related”

Question

curl --trace trace.txt -X POST -H \'Content-Type: multipart/related; boundary=boundary_1234\' --data-binary $\'--boundary_1234\\r\\nContent-Type: application/json; charset=U

Answer 1

Update: It was pointed out that I didn't read the question properly for my previous answer. curl -F is for multipart/form-data not for multipart/related.

In fact, curl has no convenient way to send a multipart/related stream that I can think of. Are you really sure that is what you want to send?

When you used your command line, you got the entire transfer logged in 'trace.txt'. Didn't that aid you in finding out what's wrong?