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Add 'mempool' P2P command, and extend 'getdata' behavior

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to permit downloading of mempool transactions from the remote peer.
This commit is contained in:
Jeff Garzik 2012-07-31 17:42:35 -04:00 committed by Jeff Garzik
parent 3c83387c29
commit 05a85b2b38
3 changed files with 37 additions and 4 deletions
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35
src/main.cpp
View File

@ -2562,7 +2562,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
{
vector<CInv> vInv;
vRecv >> vInv;
if (vInv.size() > 50000)
if (vInv.size() > MAX_INV_SZ)
{
pfrom->Misbehaving(20);
return error("message inv size() = %d", vInv.size());
@ -2613,7 +2613,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
{
vector<CInv> vInv;
vRecv >> vInv;
if (vInv.size() > 50000)
if (vInv.size() > MAX_INV_SZ)
{
pfrom->Misbehaving(20);
return error("message getdata size() = %d", vInv.size());
@ -2655,11 +2655,24 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
else if (inv.IsKnownType())
{
// Send stream from relay memory
bool pushed = false;
{
LOCK(cs_mapRelay);
map<CInv, CDataStream>::iterator mi = mapRelay.find(inv);
if (mi != mapRelay.end())
if (mi != mapRelay.end()) {
pfrom->PushMessage(inv.GetCommand(), (*mi).second);
pushed = true;
}
}
if (!pushed && inv.type == MSG_TX) {
LOCK(mempool.cs);
if (mempool.exists(inv.hash)) {
CTransaction tx = mempool.lookup(inv.hash);
CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
ss.reserve(1000);
ss << tx;
pfrom->PushMessage("tx", ss);
}
}
}
@ -2834,6 +2847,22 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
}
else if (strCommand == "mempool")
{
std::vector<uint256> vtxid;
mempool.queryHashes(vtxid);
vector<CInv> vInv;
for (unsigned int i = 0; i < vtxid.size(); i++) {
CInv inv(MSG_TX, vtxid[i]);
vInv.push_back(inv);
if (i == (MAX_INV_SZ - 1))
break;
}
if (vInv.size() > 0)
pfrom->PushMessage("inv", vInv);
}
else if (strCommand == "checkorder")
{
uint256 hashReply;

1
src/main.h
View File

@ -27,6 +27,7 @@ static const unsigned int MAX_BLOCK_SIZE = 1000000;
static const unsigned int MAX_BLOCK_SIZE_GEN = MAX_BLOCK_SIZE/2;
static const unsigned int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50;
static const unsigned int MAX_ORPHAN_TRANSACTIONS = MAX_BLOCK_SIZE/100;
static const unsigned int MAX_INV_SZ = 50000;
static const int64 MIN_TX_FEE = 50000;
static const int64 MIN_RELAY_TX_FEE = 10000;
static const int64 MAX_MONEY = 21000000 * COIN;

5
src/version.h
View File

@ -30,7 +30,7 @@ extern const std::string CLIENT_DATE;
// network protocol versioning
//
static const int PROTOCOL_VERSION = 60001;
static const int PROTOCOL_VERSION = 60002;
// earlier versions not supported as of Feb 2012, and are disconnected
static const int MIN_PROTO_VERSION = 209;
@ -46,4 +46,7 @@ static const int NOBLKS_VERSION_END = 32400;
// BIP 0031, pong message, is enabled for all versions AFTER this one
static const int BIP0031_VERSION = 60000;
// "mempool" command, enhanced "getdata" behavior starts with this version:
static const int MEMPOOL_GD_VERSION = 60002;
#endif