In the past it could be possible for a site over http connection to redirect wget to FPT using FTP PORT command so the site gets the real IP of the computer even when wget proxy command is in use I believe: https://lists.torproject.org/pipermail/tor-talk/2012-April/024040.html
Is that code still present in wget v1.16.3? It was present in v1.13.4. Thank for help
