Use txid as key in mapAlreadyAskedFor

Previously we used the CInv that would be sent to the peer announcing the
transaction as the key, but using the txid instead allows us to decouple the
p2p layer from the application logic (which relies on this map to avoid
duplicate tx requests).

1 files changed, 3 insertions, 3 deletions

diff --git a/src/net.cpp b/src/net.cpp
index e8cc753a48..3bf8c165dc 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -93,7 +93,7 @@ CCriticalSection cs_vNodes;
 map<CInv, CDataStream> mapRelay;
 deque<pair<int64_t, CInv> > vRelayExpiration;
 CCriticalSection cs_mapRelay;
-limitedmap<CInv, int64_t> mapAlreadyAskedFor(MAX_INV_SZ);
+limitedmap<uint256, int64_t> mapAlreadyAskedFor(MAX_INV_SZ);
 
 static deque<string> vOneShots;
 CCriticalSection cs_vOneShots;
@@ -2436,7 +2436,7 @@ void CNode::AskFor(const CInv& inv)
     // We're using mapAskFor as a priority queue,
     // the key is the earliest time the request can be sent
     int64_t nRequestTime;
-    limitedmap<CInv, int64_t>::const_iterator it = mapAlreadyAskedFor.find(inv);
+    limitedmap<uint256, int64_t>::const_iterator it = mapAlreadyAskedFor.find(inv.hash);
     if (it != mapAlreadyAskedFor.end())
         nRequestTime = it->second;
     else
@@ -2455,7 +2455,7 @@ void CNode::AskFor(const CInv& inv)
     if (it != mapAlreadyAskedFor.end())
         mapAlreadyAskedFor.update(it, nRequestTime);
     else
-        mapAlreadyAskedFor.insert(std::make_pair(inv, nRequestTime));
+        mapAlreadyAskedFor.insert(std::make_pair(inv.hash, nRequestTime));
     mapAskFor.insert(std::make_pair(nRequestTime, inv));
 }