TFTPSend.StoreFile
TFTPSend

function StoreFile(Const FileName: string; Restore: Boolean): Boolean;

Unit
FTPsend

Description
Send data to FileName on FTP server.

If Restore is true and server supports resume upload, upload is resumed. (send only rest of file)
In this case if remote file is same length as local file, nothing is done. If remote file is larger then local, resume is disabled and file is transfered from begin!