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Use txid as key in mapAlreadyAskedFor

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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).

Github-Pull: #7862
Rebased-From: 7e91f632c7
This commit is contained in:
Suhas Daftuar 2016-04-11 12:52:29 -04:00 committed by MarcoFalke
parent 5583a3d0a7
commit 7e71785c40
3 changed files with 5 additions and 5 deletions
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2
src/main.cpp
View File

@ -5001,7 +5001,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
CValidationState state;
pfrom->setAskFor.erase(inv.hash);
mapAlreadyAskedFor.erase(inv);
mapAlreadyAskedFor.erase(inv.hash);
if (!AlreadyHave(inv) && AcceptToMemoryPool(mempool, state, tx, true, &fMissingInputs))
{

6
src/net.cpp
View File

@ -91,7 +91,7 @@ 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;
@ -2409,7 +2409,7 @@ 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
@ -2428,7 +2428,7 @@ 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));
}

2
src/net.h
View File

@ -163,7 +163,7 @@ extern CCriticalSection cs_vNodes;
extern std::map<CInv, CDataStream> mapRelay;
extern std::deque<std::pair<int64_t, CInv> > vRelayExpiration;
extern CCriticalSection cs_mapRelay;
extern limitedmap<CInv, int64_t> mapAlreadyAskedFor;
extern limitedmap<uint256, int64_t> mapAlreadyAskedFor;
extern std::vector<std::string> vAddedNodes;
extern CCriticalSection cs_vAddedNodes;