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Merge pull request #4903

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efad808 Avoid reject message feedback loops (Pieter Wuille)
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Pieter Wuille 2014-09-16 18:52:22 +02:00
commit 13168ea46c
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1 changed files with 16 additions and 12 deletions
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src/main.cpp
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@ -4111,21 +4111,25 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
else if (strCommand == "reject") else if (strCommand == "reject")
{ {
if (fDebug) if (fDebug) {
{ try {
string strMsg; unsigned char ccode; string strReason; string strMsg; unsigned char ccode; string strReason;
vRecv >> LIMITED_STRING(strMsg, CMessageHeader::COMMAND_SIZE) >> ccode >> LIMITED_STRING(strReason, 111); vRecv >> LIMITED_STRING(strMsg, CMessageHeader::COMMAND_SIZE) >> ccode >> LIMITED_STRING(strReason, 111);
ostringstream ss; ostringstream ss;
ss << strMsg << " code " << itostr(ccode) << ": " << strReason; ss << strMsg << " code " << itostr(ccode) << ": " << strReason;
if (strMsg == "block" || strMsg == "tx") if (strMsg == "block" || strMsg == "tx")
{ {
uint256 hash; uint256 hash;
vRecv >> hash; vRecv >> hash;
ss << ": hash " << hash.ToString(); ss << ": hash " << hash.ToString();
}
LogPrint("net", "Reject %s\n", SanitizeString(ss.str()));
} catch (std::ios_base::failure& e) {
// Avoid feedback loops by preventing reject messages from triggering a new reject message.
LogPrint("net", "Unparseable reject message received\n");
} }
LogPrint("net", "Reject %s\n", SanitizeString(ss.str()));
} }
} }