Method CBlockHeaderAndShortTxIDs

src/blockencodings.cpp:18–28

#include <unordered_map>

CBlockHeaderAndShortTxIDs::CBlockHeaderAndShortTxIDs(const CBlock& block, bool fUseWTXID) :
        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(fUseWTXID ? tx.GetWitnessHash() : tx.GetHash());
    }
}

void CBlockHeaderAndShortTxIDs::FillShortTxIDSelector() const {
    CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);