From c3efb586223c0459cdb47913375c2df805be925e Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Sun, 31 Jul 2016 20:53:17 +0200
Subject: [PATCH] Add feedelta to TxMempoolInfo

---
 src/txmempool.cpp | 8 ++++++--
 src/txmempool.h   | 3 +++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index e5d28ac2ea..313d33507f 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -833,6 +833,10 @@ void CTxMemPool::queryHashes(vector<uint256>& vtxid)
     }
 }
 
+static TxMempoolInfo GetInfo(CTxMemPool::indexed_transaction_set::const_iterator it) {
+    return TxMempoolInfo{it->GetSharedTx(), it->GetTime(), CFeeRate(it->GetFee(), it->GetTxSize()), it->GetModifiedFee() - it->GetFee()};
+}
+
 std::vector<TxMempoolInfo> CTxMemPool::infoAll() const
 {
     LOCK(cs);
@@ -841,7 +845,7 @@ std::vector<TxMempoolInfo> CTxMemPool::infoAll() const
     std::vector<TxMempoolInfo> ret;
     ret.reserve(mapTx.size());
     for (auto it : iters) {
-        ret.push_back(TxMempoolInfo{it->GetSharedTx(), it->GetTime(), CFeeRate(it->GetFee(), it->GetTxSize())});
+        ret.push_back(GetInfo(it));
     }
 
     return ret;
@@ -862,7 +866,7 @@ TxMempoolInfo CTxMemPool::info(const uint256& hash) const
     indexed_transaction_set::const_iterator i = mapTx.find(hash);
     if (i == mapTx.end())
         return TxMempoolInfo();
-    return TxMempoolInfo{i->GetSharedTx(), i->GetTime(), CFeeRate(i->GetFee(), i->GetTxSize())};
+    return GetInfo(i);
 }
 
 CFeeRate CTxMemPool::estimateFee(int nBlocks) const
diff --git a/src/txmempool.h b/src/txmempool.h
index bb2638c3b7..9b0ca4655e 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -329,6 +329,9 @@ struct TxMempoolInfo
 
     /** Feerate of the transaction. */
     CFeeRate feeRate;
+
+    /** The fee delta. */
+    int64_t nFeeDelta;
 };
 
 /**