fix: limit number of bad pieces to accept from a webseed

[tearfur]

Fixes #267.

Notes: Limit the number of bad pieces to accept from a webseed before banning it.

[tearfur]

Anybody know of a webseed I can test this PR with? The webseeds provided by the issue either isn't working anymore, or is not corrupt.

[Pentaphon]

Anybody know of a webseed I can test this PR with? The webseeds provided by the issue either isn't working anymore, or is not corrupt.

Arch uses webseeds. https://archlinux.org/releng/releases/

[tearfur]

It has to be webseeds that distribute corrupt data.

[ckerr]

@tearfur probably the best way to do this reliably is to do it locally, e.g. with a local webserver and a torrent with a localhost webseed. Then after creating the .torrent file, overwrite all the file contents with bad data and serve it up on the local webserver.

[tearfur]

Finished testing, looks to be working as intended.

[2024-06-12 07:24:04.768] trc test.dat increasing peer localhost:80 strike count to 1 (peer-mgr.cc:646)
[2024-06-12 07:24:04.768] trc test.dat increasing peer localhost:80 strike count to 2 (peer-mgr.cc:646)
[2024-06-12 07:24:04.768] trc test.dat increasing peer localhost:80 strike count to 3 (peer-mgr.cc:646)
[2024-06-12 07:24:04.768] trc test.dat increasing peer localhost:80 strike count to 4 (peer-mgr.cc:646)
[2024-06-12 07:24:04.768] trc test.dat increasing peer localhost:80 strike count to 5 (peer-mgr.cc:646)
[2024-06-12 07:24:04.768] trc test.dat banning peer localhost:80 (peer-mgr.cc:651)