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fix bug in initial-block-headers download

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saves several gigabytes of bandwidth
thanks to Cryptoslave of Anoncoin for this fix.
This commit is contained in:
nzsquirrell
2016-06-05 20:49:01 +12:00
parent 3e9ff50cb6
commit f122abfe3d
2 changed files with 5 additions and 2 deletions
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src/main.cpp
+4 -1
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@@ -4477,7 +4477,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
if (inv.type == MSG_BLOCK) {
UpdateBlockAvailability(pfrom->GetId(), inv.hash);
if (!fAlreadyHave && !fImporting && !fReindex && !mapBlocksInFlight.count(inv.hash)) {
if (!fAlreadyHave && !fImporting && !fReindex && IsInitialBlockDownload() && !mapBlocksInFlight.count(inv.hash)) {
// !IsInitialBlockDownload() is needed otherwise it start to download the same headers
// several time per peer and from all peers, wasting a lot of computing time and bandwidth
// First request the headers preceding the announced block. In the normal fully-synced
// case where a new block is announced that succeeds the current tip (no reorganization),
// there are no such headers.