David Hill 0eef96e1c8 addrmgr: Always use a 50% chance between tried and new entries.
This change was suggested as Countermeasure 2 in
Eclipse Attacks on Bitcoin's Peer-to-Peer Network, Ethan
Heilman, Alison Kendler, Aviv Zohar, Sharon Goldberg. ePrint Archive
Report 2015/263. March 2015.

This mimics Bitcoin Core commit c6a63ceeb4956933588995bcf01dc3095aaeb1fc
2015-04-14 12:28:45 -04:00
..