Hi.. how did u create the checkpoints file? ...im dealing with the first
creation of that.
In ur code looks like u ve already did that.. am i wrong?
CheckpointManager.checkpoint(network,checkpoints, spvStore.get,
w.getEarliestKeyCreationTime)
thanks for support.. really appreciated
On Monday, April 13, 2015 at 1:48:46 AM UTC+2, Chris Stewart wrote:
>
> Yeah you are right. It didn't change running on mainet though. Here is the
> piece of code that I was missing for future reference for people looking to
> solve this question:
>
> peerGroup.addPeerDiscovery(new DnsDiscovery(network))
>
>
> and now here is the full piece of code in Scala.
>
> def wallet (network : NetworkParameters, ecKeys : List[ECKey]) : Wallet = {
> logger.info("Current directory: " + new java.io.File( "."
> ).getCanonicalPath)
> logger.info("The checkpoint file exists: " + new
> File("checkpoints").exists())
> logger.info("Creating the wallet on " + network)
> if (currentWallet.isDefined) {
> logger.info("Wallet has already been created")
> currentWallet.get
> } else {
> logger.info("Wallet has not been created, instantiating a new one")
> spvStore = Some(new SPVBlockStore(network, new
> File("suredbits.spvchain")))
> logger.info("spvStore")
> val walletFile = new File(walletFileName + ".wallet")
> val w = new Wallet(network)
>
> logger.info("created wallet")
> w.importKeys(ecKeys)
> w.autosaveToFile(walletFile, 200, TimeUnit.MILLISECONDS, null)
> //w.saveToFile(walletFile)
> if (network != RegTestParams.get) {
> CheckpointManager.checkpoint(network,checkpoints, spvStore.get,
> w.getEarliestKeyCreationTime)
> }
> chain = Some(new BlockChain(network,w, spvStore.get))
> val peerGroup : PeerGroup = new PeerGroup(network, chain.get)
> peerGroup.addPeerDiscovery(new DnsDiscovery(network))
> logger.info("Connect to " + peerGroup.getConnectedPeers.size + " peers")
> if(network == RegTestParams.get) {
> peerGroup.connectToLocalHost()
> logger.info("connect to local host")
> }
> peerGroup.addWallet(w)
> peerGroup.startAsync()
> peerGroup.awaitRunning()
> logger.info("Peer group started")
> peerGroup.downloadBlockChain()
> logger.info("Finished downloading blockchain")
>
> logger.info("Wallet balance after WalletInit: " + w.getBalance())
> logger.info("Wallet state after WalletInit: " + w.toString())
> walletPeerGroup = Some(peerGroup)
> currentWallet = Some(w)
> w
> }
> }
> def stopWallet = {
> if (walletPeerGroup.isDefined) {
> walletPeerGroup.get.stopAsync()
> }
> if (spvStore.isDefined) spvStore.get.close
>
> }
>
>
>
> Thanks for your help Mike.
> On Sunday, April 12, 2015 at 6:54:21 AM UTC-7, Mike Hearn wrote:
>>
>> The checkpoints shipped with bitcoinj are valid only for the main and
>> test networks, for what I hope are obvious reasons. You can't use
>> checkpointing in regtest mode. The log shows that you start with a chain of
>> height >300,000 and then the remote peer does not send you any blocks
>> because it thinks you have downloaded the block chain already.
>>
>> I'm afraid I'll be away for most of this week in the UK so won't be able
>> to help you much more with this until I get back. I suggest you spend some
>> time reviewing the documentation, the bitcoin.org developer guide, and
>> generally try to ensure your understanding of Bitcoin is as deep as it can
>> be before proceeding with development.
>>
>
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