Using both Abrowser and Tor Browser (both firefox based) I noticed that
sometimes when I download a file, it will generate a "file.extension.part"
that increases in size until it finishes the download and transforms into
"file.extension" (which was created as a 0 bytes file initially). Some other
times it won't, instead creating the "file.extension" right away and filling
it up until it finished. Why does it happen?
Also, and this is the important part, sometimes when the download fails for
some reason, the ".part" file is deleted, some other times it isn't. How can
I prevent it from being deleted? The reason for wanting that is because 1)
sometimes the partial download might be enough for whatever I am doing at the
time and 2) using the ".part" file I can sometimes resume the broken download
from that point instead of restarting it from the begining.
Any help greatly appreciated.
I know one could use DTA or some other download manager but I am interested
in "Firefox" own built-in download manager.