Share Point Metadata by REST call

HI All ,  I have developed an application which is currently capable of sending files from Mendix to share Point with REST call . I am sending file content as binary form in Request section . However i have one more thing left to achieve , Our share Point have some metadata fields that needs to be filled also which REST call . Can someone help me how can i send metadata also with my file to share Point .    
1 answers

How does Sharepoint want you to fill the metadata fields? With HTTP headers?