From 6182d10503ae3af222a7e4575724dce7ef563fec Mon Sep 17 00:00:00 2001
From: Gregory Maxwell <greg@xiph.org>
Date: Sun, 19 Apr 2015 13:39:38 -0700
Subject: [PATCH] Do not increment nAttempts by more than one for every Good
 connection.

This slows the increase of the nAttempts in addrman while partitioned,
 even if the node hasn't yet noticed the partitioning.
---
 src/addrman.cpp | 8 +++++++-
 src/addrman.h   | 8 ++++++++
 src/net.cpp     | 2 +-
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/addrman.cpp b/src/addrman.cpp
index 0a1745c10..00f6fe99e 100644
--- a/src/addrman.cpp
+++ b/src/addrman.cpp
@@ -197,6 +197,9 @@ void CAddrMan::MakeTried(CAddrInfo& info, int nId)
 void CAddrMan::Good_(const CService& addr, int64_t nTime)
 {
     int nId;
+
+    nLastGood = nTime;
+
     CAddrInfo* pinfo = Find(addr, &nId);
 
     // if not found, bail out
@@ -327,7 +330,10 @@ void CAddrMan::Attempt_(const CService& addr, bool fCountFailure, int64_t nTime)
 
     // update info
     info.nLastTry = nTime;
-    if (fCountFailure) info.nAttempts++;
+    if (fCountFailure && info.nLastCountAttempt < nLastGood) {
+        info.nLastCountAttempt = nTime;
+        info.nAttempts++;
+    }
 }
 
 CAddrInfo CAddrMan::Select_(bool newOnly)
diff --git a/src/addrman.h b/src/addrman.h
index 65ca79fa0..c5923e941 100644
--- a/src/addrman.h
+++ b/src/addrman.h
@@ -29,6 +29,9 @@ public:
     //! last try whatsoever by us (memory only)
     int64_t nLastTry;
 
+    //! last counted attempt (memory only)
+    int64_t nLastCountAttempt;
+
 private:
     //! where knowledge about this address first came from
     CNetAddr source;
@@ -66,6 +69,7 @@ public:
     {
         nLastSuccess = 0;
         nLastTry = 0;
+        nLastCountAttempt = 0;
         nAttempts = 0;
         nRefCount = 0;
         fInTried = false;
@@ -200,6 +204,9 @@ private:
     //! list of "new" buckets
     int vvNew[ADDRMAN_NEW_BUCKET_COUNT][ADDRMAN_BUCKET_SIZE];
 
+    //! last time Good was called (memory only)
+    int64_t nLastGood;
+
 protected:
     //! secret key to randomize bucket select with
     uint256 nKey;
@@ -458,6 +465,7 @@ public:
         nIdCount = 0;
         nTried = 0;
         nNew = 0;
+        nLastGood = 1; //Initially at 1 so that "never" is strictly worse.
     }
 
     CAddrMan()
diff --git a/src/net.cpp b/src/net.cpp
index f30321869..c15a4692e 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -1633,7 +1633,7 @@ void ThreadOpenConnections()
         }
 
         if (addrConnect.IsValid())
-            OpenNetworkConnection(addrConnect, (int)setConnected.size() >= min(nMaxConnections - 1, 2), &grant);
+            OpenNetworkConnection(addrConnect, (int)setConnected.size() >= std::min(nMaxConnections - 1, 2), &grant);
     }
 }