func main() { fmt.Println("Gocoin blockchain downloader version", btc.SourcesTag) parse_command_line() setup_runtime_vars() if !add_ip_str(SeedNode) { println("You need to specify IP address of a fast seed node.") println("For example run it like this: downloader -s 89.31.102.237") return } load_ips() // other seed nodes if len(GocoinHomeDir) > 0 && GocoinHomeDir[len(GocoinHomeDir)-1] != os.PathSeparator { GocoinHomeDir += string(os.PathSeparator) } if Testnet { GocoinHomeDir += "tstnet" + string(os.PathSeparator) Magic = [4]byte{0x0B, 0x11, 0x09, 0x07} DefaultTcpPort = 18333 GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943") fmt.Println("Using testnet3") } else { GocoinHomeDir += "btcnet" + string(os.PathSeparator) } fmt.Println("GocoinHomeDir:", GocoinHomeDir) utils.LockDatabaseDir(GocoinHomeDir) defer utils.UnlockDatabaseDir() StartTime = time.Now() if open_blockchain() { fmt.Printf("Blockchain opening aborted\n") close_blockchain() return } fmt.Println("Blockchain open in", time.Now().Sub(StartTime)) go do_usif() fmt.Println("Downloading headers from the seed peer", SeedNode) download_headers() if GlobalExit { close_blockchain() return } if DoThePings { fmt.Println("Tuning to other peers and trying to find the fastest ones.") fmt.Println("Execute command 'g' to continue to block chain download.") fmt.Println("Otherwise it will auto-continue after 15 minutes.") usif_prompt() do_pings() fmt.Println("Pings done.") usif_prompt() } var HighestTrustedBlock *btc.Uint256 if LastTrustedBlock == "all" { HighestTrustedBlock = TheBlockChain.BlockTreeEnd.BlockHash fmt.Println("Assume all blocks trusted") } else if LastTrustedBlock == "auto" { if LastBlockHeight > 6 { ha := BlocksToGet[LastBlockHeight] HighestTrustedBlock = btc.NewUint256(ha[:]) fmt.Println("Assume last trusted block as", HighestTrustedBlock.String()) } else { fmt.Println("-t=auto ignored since LastBlockHeight is only", LastBlockHeight) } } else if LastTrustedBlock != "" { HighestTrustedBlock = btc.NewUint256FromString(LastTrustedBlock) } if HighestTrustedBlock != nil { for k, h := range BlocksToGet { if bytes.Equal(h[:], HighestTrustedBlock.Hash[:]) { TrustUpTo = k fmt.Println("All the blocks up to", TrustUpTo, "are assumed trusted") break } } } else { fmt.Println("None of the blocks is to be assumed trusted (it will be very slow).") } for n := TheBlockChain.BlockTreeEnd; n != nil && n.Height > TheBlockChain.BlockTreeEnd.Height-BSLEN; n = n.Parent { blocksize_update(int(n.BlockSize)) } fmt.Println("Downloading blocks - BlocksToGet:", len(BlocksToGet), " avg_size:", avg_block_size()) usif_prompt() StartTime = time.Now() get_blocks() fmt.Println("Up to block", TheBlockChain.BlockTreeEnd.Height, "in", time.Now().Sub(StartTime).String()) close_all_connections() close_blockchain() return }
func host_init() { var e error BtcRootDir := utils.BitcoinHome() if common.CFG.Datadir == "" { common.GocoinHomeDir = BtcRootDir + "gocoin" + string(os.PathSeparator) } else { common.GocoinHomeDir = common.CFG.Datadir + string(os.PathSeparator) } common.Testnet = common.CFG.Testnet // So chaging this value would will only affect the behaviour after restart if common.CFG.Testnet { // testnet3 common.GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943") common.Magic = [4]byte{0x0B, 0x11, 0x09, 0x07} common.GocoinHomeDir += "tstnet" + string(os.PathSeparator) BtcRootDir += "testnet3" + string(os.PathSeparator) network.AlertPubKey, _ = hex.DecodeString("04302390343f91cc401d56d68b123028bf52e5fca1939df127f63c6467cdf9c8e2c14b61104cf817d0b780da337893ecc4aaff1309e536162dabbdb45200ca2b0a") common.MaxPeersNeeded = 100 } else { common.GenesisBlock = btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f") common.Magic = [4]byte{0xF9, 0xBE, 0xB4, 0xD9} common.GocoinHomeDir += "btcnet" + string(os.PathSeparator) network.AlertPubKey, _ = hex.DecodeString("04fc9702847840aaf195de8442ebecedf5b095cdbb9bc716bda9110971b28a49e0ead8564ff0db22209e0374782c093bb899692d524e9d6a6956e7c5ecbcd68284") common.MaxPeersNeeded = 1000 } // Lock the folder os.MkdirAll(common.GocoinHomeDir, 0770) os.MkdirAll(common.GocoinHomeDir+"wallet", 0770) utils.LockDatabaseDir(common.GocoinHomeDir) fi, e := os.Stat(common.GocoinHomeDir + "blockchain.dat") if e != nil { os.RemoveAll(common.GocoinHomeDir) fmt.Println("You seem to be running Gocoin for the fist time on this PC") fi, e = os.Stat(BtcRootDir + "blocks/blk00000.dat") if e == nil && fi.Size() > 1024*1024 { fmt.Println("There is a database from Satoshi client on your disk...") if textui.AskYesNo("Do you want to import this database into Gocoin?") { import_blockchain(BtcRootDir + "blocks") } } } fmt.Println("Opening blockchain... (Ctrl-C to interrupt)") __exit := make(chan bool) __done := make(chan bool) go func() { for { select { case s := <-killchan: fmt.Println(s) btc.AbortNow = true case <-__exit: __done <- true return } } }() sta := time.Now().UnixNano() common.BlockChain = btc.NewChain(common.GocoinHomeDir, common.GenesisBlock, common.FLAG.Rescan) sto := time.Now().UnixNano() if btc.AbortNow { fmt.Printf("Blockchain opening aborted after %.3f seconds\n", float64(sto-sta)/1e9) common.BlockChain.Close() utils.UnlockDatabaseDir() os.Exit(1) } fmt.Printf("Blockchain open in %.3f seconds\n", float64(sto-sta)/1e9) common.BlockChain.Unspent.SetTxNotify(wallet.TxNotify) common.StartTime = time.Now() __exit <- true _ = <-__done }