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Prevent duplicate connections where one is by name and another by ip

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This commit is contained in:
Pieter Wuille 2016-05-28 16:22:02 +02:00
parent 1111b80df8
commit f9f5cfc506
1 changed files with 20 additions and 0 deletions
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20
src/net.cpp
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@ -400,6 +400,26 @@ CNode* ConnectNode(CAddress addrConnect, const char *pszDest, bool fCountFailure
return NULL;
}
if (pszDest && addrConnect.IsValid()) {
// It is possible that we already have a connection to the IP/port pszDest resolved to.
// In that case, drop the connection that was just created, and return the existing CNode instead.
// Also store the name we used to connect in that CNode, so that future FindNode() calls to that
// name catch this early.
CNode* pnode = FindNode((CService)addrConnect);
if (pnode)
{
pnode->AddRef();
{
LOCK(cs_vNodes);
if (pnode->addrName.empty()) {
pnode->addrName = std::string(pszDest);
}
}
CloseSocket(hSocket);
return pnode;
}
}
addrman.Attempt(addrConnect, fCountFailure);
// Add node