CBlockHeaderAndShortTxIDs::CBlockHeaderAndShortTxIDs(const CBlock& block) :
nonce(GetRand(std::numeric_limits<uint64_t>::max())),
shorttxids(block.vtx.size() - 1), prefilledtxn(1), header(block) {
FillShortTxIDSelector();
//TODO: Use our mempool prior to block acceptance to predictively fill more than just the coinbase
prefilledtxn[0] = {0, block.vtx[0]};
for (size_t i = 1; i < block.vtx.size(); i++) {
const CTransaction& tx = block.vtx[i];
shorttxids[i - 1] = GetShortID(tx.GetHash());
}
}
CBlockHeaderAndShortTxIDs::CBlockHeaderAndShortTxIDs(const CBlock& block)
: nonce(GetRand(std::numeric_limits<uint64_t>::max()))
, shorttxids(block.vtx.size() - 1)
, prefilledtxn(1)
, header(block)
{
FillShortTxIDSelector();
prefilledtxn[0] = { 0, block.vtx[0] };
for (size_t i = 1; i < block.vtx.size(); i++) {
const CTransaction& tx = block.vtx[i];
shorttxids[i - 1] = GetShortID(tx.GetHash());
}
}
void CompactTxFinder::initMapping(uint64_t idk0, uint64_t idk1) {
std::vector<uint256> hashes;
mempool.queryHashes(hashes);
for (auto& t : hashes) {
uint64_t shortID = GetShortID(idk0, idk1, t);
if (mappedMempool.count(shortID)) {
LogPrint("thin", "ShortID hash collision in mempool");
// Erase, so the tx re-fetched from peer instead.
mappedMempool.erase(shortID);
continue;
}
mappedMempool[shortID] = t;
}
}