I need to upload a file from the visualforce page and sent the file data to the Apex controller class. From that class I need to sent that file data to my server(Using Apex HTTP Callouts). My questions are :
Is there a file size limit that can be uploaded from visualforce page to the Apex Controller?
Is it possible to sent the file data through RemoteAction call methods from the visualforce page? Because I need the Success/Failure response to process the page further
How to make the Apex HTTP Callouts for sending a file from salesforce? I am familar with normal Apex HTTP Callouts, but not with the multipart HTTP Callouts