Description:

Support for skipping the beginning of the file is implemented with the FTP
'REST' command, which starts a retrieval at any point in the file. Support
for skipping the end of the file is implemented with the FTP 'ABOR'
command, which stops the transfer. With these two commands and some careful
tracking of the current file position, we're able to reliably emulate a
'seek/read' pair, and get only the parts of the file that are actually
read.

This was originally designed for use with Archive::Zip; it's reliable
enough that the table of contents and individual files can be extracted
from a remote ZIP archive without downloading the whole thing. See the
EXAMPLES manpage below.

An interface compatible with IO::Handle is provided, along with a
'tie'-based interface.