From c6a63ceeb4956933588995bcf01dc3095aaeb1fc Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Thu, 19 Mar 2015 09:51:59 -0700
Subject: Always use a 50% chance to choose between tried and new entries
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

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.
---
 src/net.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'src/net.cpp')

diff --git a/src/net.cpp b/src/net.cpp
index 0723ee218..d8991ffa8 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -1221,8 +1221,7 @@ void ThreadOpenConnections()
         int nTries = 0;
         while (true)
         {
-            // use an nUnkBias between 10 (no outgoing connections) and 90 (8 outgoing connections)
-            CAddress addr = addrman.Select(10 + min(nOutbound,8)*10);
+            CAddress addr = addrman.Select();
 
             // if we selected an invalid address, restart
             if (!addr.IsValid() || setConnected.count(addr.GetGroup()) || IsLocal(addr))
-- 
cgit v1.2.3