// Called from the blockchain thread
func HandleNetBlock(newbl *network.BlockRcvd) {
common.CountSafe("HandleNetBlock")
bl := newbl.Block
common.Busy("CheckBlock " + bl.Hash.String())
e, dos, maybelater := common.BlockChain.CheckBlock(bl)
if e != nil {
if maybelater {
network.AddBlockToCache(bl, newbl.Conn)
} else {
fmt.Println(dos, e.Error())
if dos {
newbl.Conn.DoS("CheckBlock")
}
}
} else {
common.Busy("LocalAcceptBlock " + bl.Hash.String())
e = LocalAcceptBlock(bl, newbl.Conn)
if e == nil {
retryCachedBlocks = retry_cached_blocks()
} else {
fmt.Println("AcceptBlock:", e.Error())
newbl.Conn.DoS("LocalAcceptBl")
}
}
}
func retry_cached_blocks() bool {
if len(network.CachedBlocks) == 0 {
return false
}
accepted_cnt := 0
for k, v := range network.CachedBlocks {
common.Busy("Cache.CheckBlock " + v.Block.Hash.String())
e, dos, maybelater := common.BlockChain.CheckBlock(v.Block)
if e == nil {
common.Busy("Cache.AcceptBlock " + v.Block.Hash.String())
e := LocalAcceptBlock(v.Block, v.Conn)
if e == nil {
//fmt.Println("*** Old block accepted", common.BlockChain.BlockTreeEnd.Height)
common.CountSafe("BlocksFromCache")
delete(network.CachedBlocks, k)
accepted_cnt++
break // One at a time should be enough
} else {
fmt.Println("retry AcceptBlock:", e.Error())
v.Conn.DoS("BadCachedBlock1")
delete(network.CachedBlocks, k)
}
} else {
if !maybelater {
fmt.Println("retry CheckBlock:", e.Error())
common.CountSafe("BadCachedBlocks")
if dos {
v.Conn.DoS("BadCachedBlock2")
}
delete(network.CachedBlocks, k)
}
}
}
return accepted_cnt > 0 && len(network.CachedBlocks) > 0
}
func LocalAcceptBlock(bl *btc.Block, from *network.OneConnection) (e error) {
sta := time.Now()
e = common.BlockChain.AcceptBlock(bl)
if e == nil {
network.MutexRcv.Lock()
network.ReceivedBlocks[bl.Hash.BIdx()].TmAccept = time.Now().Sub(sta)
network.MutexRcv.Unlock()
for i := 1; i < len(bl.Txs); i++ {
network.TxMined(bl.Txs[i])
/* dupa
if msg:=contains_message(bl.Txs[i]); msg!=nil {
for xx:=range msg {
if msg[xx]<' ' || msg[xx]>127 {
msg[xx] = '.'
}
}
fmt.Println("TX", bl.Txs[i].Hash.String(), "says:", "'" + string(msg) + "'")
textui.ShowPrompt()
}
*/
}
if int64(bl.BlockTime()) > time.Now().Add(-10*time.Minute).Unix() {
// Freshly mined block - do the inv and beeps...
common.Busy("NetRouteInv")
network.NetRouteInv(2, bl.Hash, from)
if common.CFG.Beeps.NewBlock {
fmt.Println("\007Received block", common.BlockChain.BlockTreeEnd.Height)
textui.ShowPrompt()
}
if common.CFG.Beeps.MinerID != "" {
//_, rawtxlen := btc.NewTx(bl[bl.TxOffset:])
if bytes.Contains(bl.Txs[0].Serialize(), []byte(common.CFG.Beeps.MinerID)) {
fmt.Println("\007Mined by '"+common.CFG.Beeps.MinerID+"':", bl.Hash)
textui.ShowPrompt()
}
}
if common.CFG.Beeps.ActiveFork && common.Last.Block == common.BlockChain.BlockTreeEnd {
// Last block has not changed, so it must have been an orphaned block
bln := common.BlockChain.BlockIndex[bl.Hash.BIdx()]
commonNode := common.Last.Block.FirstCommonParent(bln)
forkDepth := bln.Height - commonNode.Height
fmt.Println("Orphaned block:", bln.Height, bl.Hash.String(), bln.BlockSize>>10, "KB")
if forkDepth > 1 {
fmt.Println("\007\007\007WARNING: the fork is", forkDepth, "blocks deep")
}
textui.ShowPrompt()
}
if wallet.BalanceChanged && common.CFG.Beeps.NewBalance {
fmt.Print("\007")
}
}
common.Last.Mutex.Lock()
common.Last.Time = time.Now()
common.Last.Block = common.BlockChain.BlockTreeEnd
common.Last.Mutex.Unlock()
if wallet.BalanceChanged {
wallet.BalanceChanged = false
fmt.Println("Your balance has just changed")
fmt.Print(wallet.DumpBalance(wallet.MyBalance, nil, false, true))
textui.ShowPrompt()
}
} else {
fmt.Println("Warning: AcceptBlock failed. If the block was valid, you may need to rebuild the unspent DB (-r)")
}
return
}
func main() {
var ptr *byte
if unsafe.Sizeof(ptr) < 8 {
fmt.Println("WARNING: Gocoin client shall be build for 64-bit arch. It will likely crash now.")
}
fmt.Println("Gocoin client version", lib.Version)
runtime.GOMAXPROCS(runtime.NumCPU()) // It seems that Go does not do it by default
// Disable Ctrl+C
signal.Notify(killchan, os.Interrupt, os.Kill)
defer func() {
if r := recover(); r != nil {
err, ok := r.(error)
if !ok {
err = fmt.Errorf("pkg: %v", r)
}
fmt.Println("main panic recovered:", err.Error())
fmt.Println(string(debug.Stack()))
network.NetCloseAll()
common.CloseBlockChain()
peersdb.ClosePeerDB()
sys.UnlockDatabaseDir()
os.Exit(1)
}
}()
common.InitConfig()
host_init() // This will create the DB lock file and keep it open
peersTick := time.Tick(5 * time.Minute)
txPoolTick := time.Tick(time.Minute)
netTick := time.Tick(time.Second)
peersdb.Testnet = common.Testnet
peersdb.ConnectOnly = common.CFG.ConnectOnly
peersdb.Services = common.Services
peersdb.InitPeers(common.GocoinHomeDir)
common.Last.Block = common.BlockChain.BlockTreeEnd
common.Last.Time = time.Unix(int64(common.Last.Block.Timestamp()), 0)
if common.Last.Time.After(time.Now()) {
common.Last.Time = time.Now()
}
for k, v := range common.BlockChain.BlockIndex {
network.ReceivedBlocks[k] = &network.OneReceivedBlock{Time: time.Unix(int64(v.Timestamp()), 0)}
}
if common.CFG.TextUI.Enabled {
go textui.MainThread()
}
if common.CFG.WebUI.Interface != "" {
fmt.Println("Starting WebUI at", common.CFG.WebUI.Interface, "...")
go webui.ServerThread(common.CFG.WebUI.Interface)
}
for !usif.Exit_now {
common.CountSafe("MainThreadLoops")
for retryCachedBlocks {
retryCachedBlocks = retry_cached_blocks()
// We have done one per loop - now do something else if pending...
if len(network.NetBlocks) > 0 || len(usif.UiChannel) > 0 {
break
}
}
common.Busy("")
select {
case s := <-killchan:
fmt.Println("Got signal:", s)
usif.Exit_now = true
continue
case newbl := <-network.NetBlocks:
common.CountSafe("MainNetBlock")
HandleNetBlock(newbl)
case newtx := <-network.NetTxs:
common.CountSafe("MainNetTx")
network.HandleNetTx(newtx, false)
case newal := <-network.NetAlerts:
common.CountSafe("MainNetAlert")
fmt.Println("\007" + newal)
textui.ShowPrompt()
case <-netTick:
common.CountSafe("MainNetTick")
network.NetworkTick()
case cmd := <-usif.UiChannel:
common.CountSafe("MainUICmd")
common.Busy("UI command")
cmd.Handler(cmd.Param)
cmd.Done.Done()
continue
case <-peersTick:
peersdb.ExpirePeers()
case <-txPoolTick:
network.ExpireTxs()
case <-time.After(time.Second / 2):
common.CountSafe("MainThreadTouts")
if !retryCachedBlocks {
common.Busy("common.BlockChain.Idle()")
if common.BlockChain.Idle() {
common.CountSafe("ChainIdleUsed")
}
}
continue
}
}
network.NetCloseAll()
peersdb.ClosePeerDB()
if usif.DefragBlocksDB != 0 {
defrag_db()
}
common.CloseBlockChain()
sys.UnlockDatabaseDir()
}