Transmission

Transmission normally uses RC4, however I think there may be certain circumstances where plaintext would be used for a DHT handshake.
This sounds very bad, where can I verify what sort of traffic Transmission doesn't encrypt (or doesn't encrypt without enabling "forced" encryption)?

P.s.: Older ...

I agree it would be useful.

It's currently possible in
* libtorrent/rtorrent https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=349622
* rutorrent (but not private torrents) http://forums.rutorrent.org/index.php?topic=3236.0
* utorrent with "add peer" dropdown https://forum.utorrent.com/topic/54155 ...