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Limit setAskFor and retire requested entries only when a getdata returns.

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The setAskFor duplicate elimination was too eager and removed entries
 when we still had no getdata response, allowing the peer to keep
 INVing and not responding.
This commit is contained in:
Gregory Maxwell
2015-11-23 01:54:23 +00:00
parent 5029698186
commit ebb25f4c23
3 changed files with 8 additions and 3 deletions
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4
src/net.cpp
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@@ -2408,9 +2408,9 @@ CNode::~CNode()
void CNode::AskFor(const CInv& inv)
{
if (mapAskFor.size() > MAPASKFOR_MAX_SZ)
if (mapAskFor.size() > MAPASKFOR_MAX_SZ || setAskFor.size() > SETASKFOR_MAX_SZ)
return;
// a peer may not occupy multiple positions in an inv's request queue
// a peer may not have multiple non-responded queue positions for a single inv item
if (!setAskFor.insert(inv.hash).second)
return;