Hi,
to get the data from URL(http) we have so many function modules under function group SFTP ,recently i used HTTP_GET to get the data from url.
but i don't know how to send the data to url ,but this following link may helps you,
https://help.sap.com/saphelp_nw04/helpdata/en/2b/d920434b8a11d1894c0000e8323c4f/content.htm