[btcsuite/btcd] 0eef96: addrmgr: Always use a 50% chance between tried and...

[David Hill]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcd
  Commit: 0eef96e1c8c0dc1323d5f1d69f7874f21f4bc3ed
      
https://github.com/btcsuite/btcd/commit/0eef96e1c8c0dc1323d5f1d69f7874f21f4bc3ed
  Author: David Hill <dh...@mindcry.org>
  Date:   2015-04-14 (Tue, 14 Apr 2015)

  Changed paths:
    M addrmgr/addrmanager.go
    M addrmgr/addrmanager_test.go
    M server.go

  Log Message:
  -----------
  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