how to use cURL on specific interface

Question

I am developing a code in c, which simply FTPs the files on FTP server by using curl utility, by following this example

now i have one simple thing to do, specify curl to use particular interface (IP) of the server for upload, as other interface of the server is associated with other socket connection.

is there any way to do it?

Answer 1

Seems like curl support --interface option

curl --interface eth0