Backport #32025 by @wolfogre
Fix#32024. Follow #27655.
After this PR, all usage of "new dial context" needs to provide a proxy,
so I dropped the old `NewDialContext` and renamed
`NewDialContextWithProxy` to `NewDialContext`.
Co-authored-by: Jason Song <i@wolfogre.com>
Change all license headers to comply with REUSE specification.
Fix#16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
Use hostmacher to replace matchlist.
And we introduce a better DialContext to do a full host/IP check, otherwise the attackers can still bypass the allow/block list by a 302 redirection.