The WEB access facility provides 3 of the standard Internet protocols:
•HTTP – standard access to WEB pages
•HTTPS – access to WEB pages using the Secure Socket Layer, which provides robust point-to-point security for the information being exchanged with the Server
•FTP – a file transfer facility
All 3 protocols allow both binary and character data to be exchanged between the ESL Application and the Server. However, as the HTTP and HTTPS protocols use an ESL string structure as a buffer, it is not currently possible to write the binary data to a file. If binary data (data such as images) needs to be downloaded and saved, then we recommend using the FTP facility, since this process writes the transmission directly to a file.