Altcoin connecting nodes

Question

I have created my crypto currency based on Litecoin 0.13.2. All seem works fine except fact that nodes are not synchronizing.

Debug says:

Ignoring getheaders from peer=x because is in initial block download.

If I compile version 0.8.x and connect to 0.13 there is no problem with blocks data interchange.

I have mined few blocks for testing but stil getting same error, therefore I cannot run my network.

Regards,

Answer 1

This is happening because your node thinks it is in initial block download.

There are several reasons why that might happen, but I think only two apply here.

• The chain tip is more than nMaxTipAge seconds old. Try setting the -maxtipage option to a big number, and see if that fixes it.
• The chain tip has less than nMinimumChainWork (from chainparams.cpp) of work put into it.

---

Here are the conditions that trigger initial block download:

bool IsInitialBlockDownload()
{
    const CChainParams& chainParams = Params();

    // Once this function has returned false, it must remain false.
    static std::atomic<bool> latchToFalse{false};
    // Optimization: pre-test latch before taking the lock.
    if (latchToFalse.load(std::memory_order_relaxed))
        return false;

    LOCK(cs_main);
    if (latchToFalse.load(std::memory_order_relaxed))
        return false;
    if (fImporting || fReindex)
        return true;
    if (chainActive.Tip() == NULL)
        return true;
    if (chainActive.Tip()->nChainWork < UintToArith256(chainParams.GetConsensus().nMinimumChainWork))
        return true;
    if (chainActive.Tip()->GetBlockTime() < (GetTime() - nMaxTipAge))
        return true;
    latchToFalse.store(true, std::memory_order_relaxed);
    return false;
}