Abstract: A file is transferred between client and server. The client determines file transfer resources and good time slots available at the client, and communicates a file transfer plan to upload the file to the server; the file transfer plan specifies the file resources available at the client and time slots. The server acknowledges the file transfer plan, possibly with adjustments to the available time slots, and the server communicates a postbox indicating the location where the file is to be uploaded. The client executes a file transfer process specified in the file transfer plan, based on the file transfer resources available at the server and client, to upload the file to a respective location specified by the postbox. There may be plural uploads of parts of the file, at different available time slots, and/or different combinations of file transfer resources specified in the acknowledged file transfer plan.

Abstract: A file is transferred between client and server. The client determines file transfer resources and good time slots available at the client, and communicates a file transfer plan to upload the file to the server; the file transfer plan specifies the file resources available at the client and time slots. The server acknowledges the file transfer plan, possibly with adjustments to the available time slots, and the server communicates a postbox indicating the location where the file is to be uploaded. The client executes a file transfer process specified in the file transfer plan, based on the file transfer resources available at the server and client, to upload the file to a respective location specified by the postbox. There may be plural uploads of parts of the file, at different available time slots, and/or different combinations of file transfer resources specified in the acknowledged file transfer plan.