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Limit response to getblocks to half of output buffer size

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Introduce SendBufferSize() and ReceiveBufferSize(), and limit
the blocks sent as response to the "getblocks" message to
half of the active send buffer size.
This commit is contained in:
Pieter Wuille 2011-06-30 23:29:44 +02:00
parent 44d16327c1
commit 4973174534
3 changed files with 11 additions and 5 deletions
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10
src/main.cpp
View file

@ -2040,20 +2040,24 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
if (pindex)
pindex = pindex->pnext;
int nLimit = 500 + locator.GetDistanceBack();
unsigned int nBytes = 0;
printf("getblocks %d to %s limit %d\n", (pindex ? pindex->nHeight : -1), hashStop.ToString().substr(0,20).c_str(), nLimit);
for (; pindex; pindex = pindex->pnext)
{
if (pindex->GetBlockHash() == hashStop)
{
printf(" getblocks stopping at %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str());
printf(" getblocks stopping at %d %s (%u bytes)\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str(), nBytes);
break;
}
pfrom->PushInventory(CInv(MSG_BLOCK, pindex->GetBlockHash()));
if (--nLimit <= 0)
CBlock block;
block.ReadFromDisk(pindex, true);
nBytes += block.GetSerializeSize(SER_NETWORK);
if (--nLimit <= 0 || nBytes >= SendBufferSize()/2)
{
// When this block is requested, we'll send an inv that'll make them
// getblocks the next batch of inventory.
printf(" getblocks stopping at limit %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str());
printf(" getblocks stopping at limit %d %s (%u bytes)\n", pindex->nHeight, pindex->GetBlockHash().ToString().substr(0,20).c_str(), nBytes);
pfrom->hashContinue = pindex->GetBlockHash();
break;
}

4
src/net.cpp
View file

@ -915,7 +915,7 @@ void ThreadSocketHandler2(void* parg)
CDataStream& vRecv = pnode->vRecv;
unsigned int nPos = vRecv.size();
if (nPos > 1000*GetArg("-maxreceivebuffer", 10*1000)) {
if (nPos > ReceiveBufferSize()) {
if (!pnode->fDisconnect)
printf("socket recv flood control disconnect (%d bytes)\n", vRecv.size());
pnode->CloseSocketDisconnect();
@ -980,7 +980,7 @@ void ThreadSocketHandler2(void* parg)
pnode->CloseSocketDisconnect();
}
}
if (vSend.size() > 1000*GetArg("-maxsendbuffer", 10*1000)) {
if (vSend.size() > SendBufferSize()) {
if (!pnode->fDisconnect)
printf("socket send flood control disconnect (%d bytes)\n", vSend.size());
pnode->CloseSocketDisconnect();

2
src/net.h
View file

@ -23,6 +23,8 @@ extern int nConnectTimeout;
inline unsigned int ReceiveBufferSize() { return 1000*GetArg("-maxreceivebuffer", 10*1000); }
inline unsigned int SendBufferSize() { return 1000*GetArg("-maxsendbuffer", 10*1000); }
inline unsigned short GetDefaultPort() { return fTestNet ? 18333 : 8333; }
static const unsigned int PUBLISH_HOPS = 5;
enum