/
p2pcli.go
652 lines (565 loc) · 19.2 KB
/
p2pcli.go
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// Copyright Fuzamei Corp. 2018 All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gossip
import (
"encoding/hex"
"fmt"
"io"
"math/rand"
"net"
"github.com/33cn/chain33/p2p/utils"
"sync/atomic"
"time"
"github.com/33cn/chain33/queue"
pb "github.com/33cn/chain33/types"
"golang.org/x/net/context"
"google.golang.org/grpc"
)
type p2pEventFunc func(message *queue.Message, taskIndex int64)
// EventInterface p2p subscribe to the event hander interface
type EventInterface interface {
BroadCastTx(msg *queue.Message, taskindex int64)
GetMemPool(msg *queue.Message, taskindex int64)
GetPeerInfo(msg *queue.Message, taskindex int64)
GetHeaders(msg *queue.Message, taskindex int64)
GetBlocks(msg *queue.Message, taskindex int64)
BlockBroadcast(msg *queue.Message, taskindex int64)
GetNetInfo(msg *queue.Message, taskindex int64)
}
// NormalInterface subscribe to the event hander interface
type NormalInterface interface {
GetAddr(peer *Peer) ([]string, error)
SendVersion(peer *Peer, nodeinfo *NodeInfo) (string, error)
SendPing(peer *Peer, nodeinfo *NodeInfo) error
GetBlockHeight(nodeinfo *NodeInfo) (int64, error)
CheckPeerNatOk(addr string, nodeInfo *NodeInfo) bool
GetAddrList(peer *Peer) (map[string]int64, error)
GetInPeersNum(peer *Peer) (int, error)
CheckSelf(addr string, nodeinfo *NodeInfo) bool
}
// Cli p2p client
type Cli struct {
network *P2p
}
// NewP2PCli produce a p2p client
func NewP2PCli(network *P2p) EventInterface {
if network == nil {
return nil
}
pcli := &Cli{
network: network,
}
return pcli
}
// NewNormalP2PCli produce a normal client
func NewNormalP2PCli() NormalInterface {
return &Cli{}
}
// BroadCastTx broadcast transactions
func (m *Cli) BroadCastTx(msg *queue.Message, taskindex int64) {
defer func() {
<-m.network.txFactory
atomic.AddInt32(&m.network.txCapcity, 1)
log.Debug("BroadCastTx", "task complete:", taskindex)
}()
if tx, ok := msg.GetData().(*pb.Transaction); ok {
txHash := hex.EncodeToString(tx.Hash())
//此处使用新分配结构,避免重复修改已保存的ttl
route := &pb.P2PRoute{TTL: 1}
//是否已存在记录,不存在表示本节点发起的交易
data, exist := txHashFilter.Get(txHash)
if ttl, ok := data.(*pb.P2PRoute); exist && ok {
route.TTL = ttl.GetTTL() + 1
} else {
txHashFilter.Add(txHash, true)
}
m.network.node.pubsub.FIFOPub(&pb.P2PTx{Tx: tx, Route: route}, "tx")
msg.Reply(m.network.client.NewMessage("mempool", pb.EventReply, pb.Reply{IsOk: true, Msg: []byte("ok")}))
}
}
// GetMemPool get mempool contents
func (m *Cli) GetMemPool(msg *queue.Message, taskindex int64) {
defer func() {
<-m.network.otherFactory
log.Debug("GetMemPool", "task complete:", taskindex)
}()
var Txs = make([]*pb.Transaction, 0)
var ableInv = make([]*pb.Inventory, 0)
peers, _ := m.network.node.GetActivePeers()
for _, peer := range peers {
//获取远程 peer invs
resp, err := peer.mconn.gcli.GetMemPool(context.Background(),
&pb.P2PGetMempool{Version: m.network.node.nodeInfo.channelVersion}, grpc.FailFast(true))
P2pComm.CollectPeerStat(err, peer)
if err != nil {
if err == pb.ErrVersion {
peer.version.SetSupport(false)
P2pComm.CollectPeerStat(err, peer)
}
continue
}
invs := resp.GetInvs()
//与本地mempool 对比 tx数组
tmpMsg := m.network.client.NewMessage("mempool", pb.EventGetMempool, nil)
txresp, err := m.network.client.Wait(tmpMsg)
if err != nil {
continue
}
txlist := txresp.GetData().(*pb.ReplyTxList)
txs := txlist.GetTxs()
var txmap = make(map[string]*pb.Transaction)
for _, tx := range txs {
txmap[hex.EncodeToString(tx.Hash())] = tx
}
//去重过滤
for _, inv := range invs {
if _, ok := txmap[hex.EncodeToString(inv.Hash)]; !ok {
ableInv = append(ableInv, inv)
}
}
//获取真正的交易Tx call GetData
datacli, dataerr := peer.mconn.gcli.GetData(context.Background(),
&pb.P2PGetData{Invs: ableInv, Version: m.network.node.nodeInfo.channelVersion}, grpc.FailFast(true))
P2pComm.CollectPeerStat(dataerr, peer)
if dataerr != nil {
continue
}
invdatas, recerr := datacli.Recv()
if recerr != nil && recerr != io.EOF {
log.Error("GetMemPool", "err", recerr.Error())
err = datacli.CloseSend()
if err != nil {
log.Error("datacli", "close err", err)
}
continue
}
for _, invdata := range invdatas.Items {
Txs = append(Txs, invdata.GetTx())
}
err = datacli.CloseSend()
if err != nil {
log.Error("datacli", "CloseSend err", err)
}
break
}
msg.Reply(m.network.client.NewMessage("mempool", pb.EventReplyTxList, &pb.ReplyTxList{Txs: Txs}))
}
// GetAddr get address list
func (m *Cli) GetAddr(peer *Peer) ([]string, error) {
resp, err := peer.mconn.gcli.GetAddr(context.Background(), &pb.P2PGetAddr{Nonce: int64(rand.Int31n(102040))},
grpc.FailFast(true))
P2pComm.CollectPeerStat(err, peer)
if err != nil {
return nil, err
}
log.Debug("GetAddr Resp", "Resp", resp, "addrlist", resp.Addrlist)
return resp.Addrlist, nil
}
// GetInPeersNum return normal number of peers
func (m *Cli) GetInPeersNum(peer *Peer) (int, error) {
ping, err := P2pComm.NewPingData(peer.node.nodeInfo)
if err != nil {
return 0, err
}
resp, err := peer.mconn.gcli.CollectInPeers(context.Background(), ping,
grpc.FailFast(true))
P2pComm.CollectPeerStat(err, peer)
if err != nil {
return 0, err
}
return len(resp.GetPeers()), nil
}
// GetAddrList return a map for address-prot
func (m *Cli) GetAddrList(peer *Peer) (map[string]int64, error) {
var addrlist = make(map[string]int64)
if peer == nil {
return addrlist, fmt.Errorf("pointer is nil")
}
resp, err := peer.mconn.gcli.GetAddrList(context.Background(), &pb.P2PGetAddr{Nonce: int64(rand.Int31n(102040))},
grpc.FailFast(true))
P2pComm.CollectPeerStat(err, peer)
if err != nil {
return addrlist, err
}
//获取本地高度
client := peer.node.nodeInfo.client
msg := client.NewMessage("blockchain", pb.EventGetLastHeader, nil)
err = client.SendTimeout(msg, true, time.Second*10)
if err != nil {
log.Error("getLocalPeerInfo blockchain", "Error", err.Error())
return addrlist, err
}
respmsg, err := client.WaitTimeout(msg, time.Second*30)
if err != nil {
return addrlist, err
}
localBlockHeight := respmsg.GetData().(*pb.Header).GetHeight()
peerinfos := resp.GetPeerinfo()
for _, peerinfo := range peerinfos {
if localBlockHeight-peerinfo.GetHeader().GetHeight() < 2048 {
addrlist[fmt.Sprintf("%v:%v", peerinfo.GetAddr(), peerinfo.GetPort())] = peerinfo.GetHeader().GetHeight()
}
}
return addrlist, nil
}
// SendVersion send version
func (m *Cli) SendVersion(peer *Peer, nodeinfo *NodeInfo) (string, error) {
client := nodeinfo.client
msg := client.NewMessage("blockchain", pb.EventGetBlockHeight, nil)
err := client.SendTimeout(msg, true, time.Second*10)
if err != nil {
log.Error("SendVesion", "Error", err.Error())
return "", err
}
rsp, err := client.WaitTimeout(msg, time.Second*20)
if err != nil {
log.Error("GetHeight", "Error", err.Error())
return "", err
}
blockheight := rsp.GetData().(*pb.ReplyBlockHeight).GetHeight()
randNonce := rand.Int31n(102040)
p2pPrivKey, _ := nodeinfo.addrBook.GetPrivPubKey()
in, err := P2pComm.Signature(p2pPrivKey,
&pb.P2PPing{Nonce: int64(randNonce), Addr: nodeinfo.GetExternalAddr().IP.String(),
Port: int32(nodeinfo.GetExternalAddr().Port)})
if err != nil {
log.Error("Signature", "Error", err.Error())
return "", err
}
addrfrom := nodeinfo.GetExternalAddr().String()
resp, err := peer.mconn.gcli.Version2(context.Background(), &pb.P2PVersion{Version: nodeinfo.channelVersion, Service: int64(nodeinfo.ServiceTy()), Timestamp: pb.Now().Unix(),
AddrRecv: peer.Addr(), AddrFrom: addrfrom, Nonce: int64(rand.Int31n(102040)),
UserAgent: hex.EncodeToString(in.Sign.GetPubkey()), StartHeight: blockheight}, grpc.FailFast(true))
log.Debug("SendVersion", "resp", resp, "addrfrom", addrfrom, "sendto", peer.Addr())
if err != nil {
log.Error("SendVersion", "Verson", err.Error(), "peer", peer.Addr())
if err == pb.ErrVersion {
peer.version.SetSupport(false)
P2pComm.CollectPeerStat(err, peer)
}
return "", err
}
P2pComm.CollectPeerStat(err, peer)
log.Debug("SHOW VERSION BACK", "VersionBack", resp, "peer", peer.Addr())
_, ver := utils.DecodeChannelVersion(resp.GetVersion())
peer.version.SetVersion(ver)
ip, _, err := net.SplitHostPort(resp.GetAddrRecv())
if err == nil {
if ip != nodeinfo.GetExternalAddr().IP.String() {
log.Debug("sendVersion", "externalip", ip)
if peer.IsPersistent() {
//永久加入黑名单
nodeinfo.blacklist.Add(ip, 0)
}
}
}
if exaddr, err := NewNetAddressString(resp.GetAddrRecv()); err == nil {
nodeinfo.SetExternalAddr(exaddr)
}
return resp.GetUserAgent(), nil
}
// SendPing send ping
func (m *Cli) SendPing(peer *Peer, nodeinfo *NodeInfo) error {
randNonce := rand.Int31n(102040)
ping := &pb.P2PPing{Nonce: int64(randNonce), Addr: nodeinfo.GetExternalAddr().IP.String(), Port: int32(nodeinfo.GetExternalAddr().Port)}
p2pPrivKey, _ := nodeinfo.addrBook.GetPrivPubKey()
_, err := P2pComm.Signature(p2pPrivKey, ping)
if err != nil {
log.Error("Signature", "Error", err.Error())
return err
}
r, err := peer.mconn.gcli.Ping(context.Background(), ping, grpc.FailFast(true))
P2pComm.CollectPeerStat(err, peer)
if err != nil {
return err
}
log.Debug("SendPing", "Peer", peer.Addr(), "nonce", randNonce, "recv", r.Nonce)
return nil
}
// GetBlockHeight return block height
func (m *Cli) GetBlockHeight(nodeinfo *NodeInfo) (int64, error) {
client := nodeinfo.client
msg := client.NewMessage("blockchain", pb.EventGetLastHeader, nil)
err := client.SendTimeout(msg, true, time.Minute)
if err != nil {
log.Error("GetBlockHeight", "Error", err.Error())
return 0, err
}
resp, err := client.WaitTimeout(msg, time.Minute)
if err != nil {
return 0, err
}
header := resp.GetData().(*pb.Header)
return header.GetHeight(), nil
}
// GetPeerInfo return peer information
func (m *Cli) GetPeerInfo(msg *queue.Message, taskindex int64) {
defer func() {
log.Debug("GetPeerInfo", "task complete:", taskindex)
}()
peerinfo, err := m.getLocalPeerInfo()
if err != nil {
log.Error("GetPeerInfo", "p2p cli Err", err.Error())
msg.Reply(m.network.client.NewMessage("blockchain", pb.EventPeerList, &pb.PeerList{Peers: m.peerInfos()}))
return
}
var peers = m.peerInfos()
var peer pb.Peer
peer.Addr = peerinfo.GetAddr()
peer.Port = peerinfo.GetPort()
peer.Name = peerinfo.GetName()
peer.MempoolSize = peerinfo.GetMempoolSize()
peer.Self = true
peer.Header = peerinfo.GetHeader()
peers = append(peers, &peer)
msg.Reply(m.network.client.NewMessage("blockchain", pb.EventPeerList, &pb.PeerList{Peers: peers}))
}
// GetHeaders get headers information
func (m *Cli) GetHeaders(msg *queue.Message, taskindex int64) {
defer func() {
<-m.network.otherFactory
log.Debug("GetHeaders", "task complete:", taskindex)
}()
if m.network.node.Size() == 0 {
log.Debug("GetHeaders", "boundNum", 0)
msg.Reply(m.network.client.NewMessage("blockchain", pb.EventReply, pb.Reply{Msg: []byte("no peers")}))
return
}
req := msg.GetData().(*pb.ReqBlocks)
pid := req.GetPid()
if len(pid) == 0 {
log.Debug("GetHeaders:pid is nil")
msg.Reply(m.network.client.NewMessage("blockchain", pb.EventReply, pb.Reply{Msg: []byte("no pid")}))
return
}
msg.Reply(m.network.client.NewMessage("blockchain", pb.EventReply, pb.Reply{IsOk: true, Msg: []byte("ok")}))
peers, infos := m.network.node.GetActivePeers()
if peer, ok := peers[pid[0]]; ok && peer != nil {
var err error
headers, err := peer.mconn.gcli.GetHeaders(context.Background(), &pb.P2PGetHeaders{StartHeight: req.GetStart(), EndHeight: req.GetEnd(),
Version: m.network.node.nodeInfo.channelVersion}, grpc.FailFast(true))
P2pComm.CollectPeerStat(err, peer)
if err != nil {
log.Error("GetBlocks", "Err", err.Error())
if err == pb.ErrVersion {
peer.version.SetSupport(false)
P2pComm.CollectPeerStat(err, peer) //把no support 消息传递过去
}
return
}
client := m.network.node.nodeInfo.client
msg := client.NewMessage("blockchain", pb.EventAddBlockHeaders, &pb.HeadersPid{Pid: pid[0], Headers: &pb.Headers{Items: headers.GetHeaders()}})
err = client.Send(msg, false)
if err != nil {
log.Error("send", "to blockchain EventAddBlockHeaders msg Err", err.Error())
}
} else {
//当请求的pid不是ActivePeer时需要打印日志方便问题定位
log.Debug("GetHeaders", "pid", pid[0], "ActivePeers", peers, "infos", infos)
}
}
// GetBlocks get blocks information
func (m *Cli) GetBlocks(msg *queue.Message, taskindex int64) {
defer func() {
<-m.network.otherFactory
log.Debug("GetBlocks", "task complete:", taskindex)
}()
if m.network.node.Size() == 0 {
log.Debug("GetBlocks", "boundNum", 0)
msg.Reply(m.network.client.NewMessage("blockchain", pb.EventReply, pb.Reply{Msg: []byte("no peers")}))
return
}
req := msg.GetData().(*pb.ReqBlocks)
log.Debug("GetBlocks", "start", req.GetStart(), "end", req.GetEnd())
pids := req.GetPid()
log.Debug("GetBlocks", "pids", pids)
var Inventorys = make([]*pb.Inventory, 0)
for i := req.GetStart(); i <= req.GetEnd(); i++ {
var inv pb.Inventory
inv.Ty = msgBlock
inv.Height = i
Inventorys = append(Inventorys, &inv)
}
MaxInvs := &pb.P2PInv{Invs: Inventorys}
var downloadPeers []*Peer
peers, infos := m.network.node.GetActivePeers()
if len(pids) > 0 && pids[0] != "" { //指定Pid 下载数据
log.Debug("fetch from peer in pids", "pids", pids)
for _, pid := range pids {
if peer, ok := peers[pid]; ok && peer != nil {
downloadPeers = append(downloadPeers, peer)
}
}
} else {
log.Debug("fetch from all peers in pids")
for name, peer := range peers {
info, ok := infos[name]
if !ok || info.GetHeader().GetHeight() < req.GetStart() { //高度不符合要求
continue
}
downloadPeers = append(downloadPeers, peer)
}
}
if len(downloadPeers) == 0 {
log.Error("GetBlocks", "downloadPeers", 0, "peers", peers, "infos", infos)
msg.Reply(m.network.client.NewMessage("blockchain", pb.EventReply, pb.Reply{Msg: []byte("no downloadPeers")}))
return
}
msg.Reply(m.network.client.NewMessage("blockchain", pb.EventReply, pb.Reply{IsOk: true, Msg: []byte("downloading...")}))
//使用新的下载模式进行下载
var bChan = make(chan *pb.BlockPid, 512)
invs := MaxInvs.GetInvs()
job := NewDownloadJob(m, downloadPeers)
var jobcancel int32
go func(cancel *int32, invs []*pb.Inventory) {
for {
if atomic.LoadInt32(cancel) == 1 {
return
}
invs = job.DownloadBlock(invs, bChan)
if len(invs) == 0 {
return
}
if job.avalidPeersNum() <= 0 {
job.ResetDownloadPeers(downloadPeers)
continue
}
if job.isCancel() {
return
}
}
}(&jobcancel, invs)
i := 0
for {
if job.isCancel() {
return
}
timeout := time.NewTimer(time.Minute * 10)
select {
case <-timeout.C:
atomic.StoreInt32(&jobcancel, 1)
job.CancelJob()
log.Error("download timeout")
return
case blockpid := <-bChan:
newmsg := m.network.node.nodeInfo.client.NewMessage("blockchain", pb.EventSyncBlock, blockpid)
err := m.network.node.nodeInfo.client.SendTimeout(newmsg, false, 60*time.Second)
if err != nil {
log.Error("send", "to blockchain EventSyncBlock msg err", err)
}
i++
if i == len(MaxInvs.GetInvs()) {
return
}
}
if !timeout.Stop() {
<-timeout.C
}
}
}
// BlockBroadcast block broadcast
func (m *Cli) BlockBroadcast(msg *queue.Message, taskindex int64) {
defer func() {
<-m.network.otherFactory
log.Debug("BlockBroadcast", "task complete:", taskindex)
}()
if block, ok := msg.GetData().(*pb.Block); ok {
pb.AssertConfig(m.network.client)
blockHashFilter.Add(hex.EncodeToString(block.Hash(m.network.client.GetConfig())), true)
m.network.node.pubsub.FIFOPub(&pb.P2PBlock{Block: block}, "block")
}
}
// GetNetInfo get network information
func (m *Cli) GetNetInfo(msg *queue.Message, taskindex int64) {
defer func() {
<-m.network.otherFactory
log.Debug("GetNetInfo", "task complete:", taskindex)
}()
var netinfo pb.NodeNetInfo
netinfo.Externaladdr = m.network.node.nodeInfo.GetExternalAddr().String()
netinfo.Localaddr = m.network.node.nodeInfo.GetListenAddr().String()
netinfo.Service = m.network.node.nodeInfo.IsOutService()
netinfo.Outbounds = int32(m.network.node.Size())
netinfo.Inbounds = int32(len(m.network.node.server.p2pserver.getInBoundPeers()))
msg.Reply(m.network.client.NewMessage("rpc", pb.EventReplyNetInfo, &netinfo))
}
// CheckPeerNatOk check peer is ok or not
func (m *Cli) CheckPeerNatOk(addr string, info *NodeInfo) bool {
//连接自己的地址信息做测试
return !(len(P2pComm.AddrRouteble([]string{addr}, info.channelVersion, info.cliCreds)) == 0)
}
// CheckSelf check addrbook privPubKey
func (m *Cli) CheckSelf(addr string, nodeinfo *NodeInfo) bool {
netaddr, err := NewNetAddressString(addr)
if err != nil {
log.Error("AddrRouteble", "NewNetAddressString", err.Error())
return false
}
conn, err := netaddr.DialTimeout(nodeinfo.channelVersion, nodeinfo.cliCreds)
if err != nil {
return false
}
defer conn.Close()
cli := pb.NewP2PgserviceClient(conn)
resp, err := cli.GetPeerInfo(context.Background(),
&pb.P2PGetPeerInfo{Version: nodeinfo.channelVersion}, grpc.FailFast(true))
if err != nil {
return false
}
_, selfName := nodeinfo.addrBook.GetPrivPubKey()
return resp.GetName() == selfName
}
func (m *Cli) peerInfos() []*pb.Peer {
peerinfos := m.network.node.nodeInfo.peerInfos.GetPeerInfos()
var peers []*pb.Peer
for _, peer := range peerinfos {
if peer.GetAddr() == m.network.node.nodeInfo.GetExternalAddr().IP.String() && peer.GetPort() == int32(m.network.node.nodeInfo.GetExternalAddr().Port) {
continue
}
peers = append(peers, peer)
}
return peers
}
func (m *Cli) getLocalPeerInfo() (*pb.P2PPeerInfo, error) {
client := m.network.client
msg := client.NewMessage("mempool", pb.EventGetMempoolSize, nil)
err := client.SendTimeout(msg, true, time.Second*10) //发送超时
if err != nil {
log.Error("GetPeerInfo mempool", "Error", err.Error())
return nil, err
}
resp, err := client.WaitTimeout(msg, time.Second*30)
if err != nil {
return nil, err
}
log.Debug("getLocalPeerInfo", "GetMempoolSize", "after")
meminfo := resp.GetData().(*pb.MempoolSize)
var localpeerinfo pb.P2PPeerInfo
_, pub := m.network.node.nodeInfo.addrBook.GetPrivPubKey()
log.Debug("getLocalPeerInfo", "EventGetLastHeader", "befor")
//get header
msg = client.NewMessage("blockchain", pb.EventGetLastHeader, nil)
err = client.SendTimeout(msg, true, time.Second*10)
if err != nil {
log.Error("getLocalPeerInfo blockchain", "Error", err.Error())
return nil, err
}
resp, err = client.WaitTimeout(msg, time.Second*30)
if err != nil {
return nil, err
}
log.Debug("getLocalPeerInfo", "EventGetLastHeader", "after")
header := resp.GetData().(*pb.Header)
localpeerinfo.Header = header
localpeerinfo.Name = pub
localpeerinfo.MempoolSize = int32(meminfo.GetSize())
if m.network.node.nodeInfo.GetExternalAddr().IP == nil {
localpeerinfo.Addr = m.network.node.nodeInfo.GetListenAddr().IP.String()
localpeerinfo.Port = int32(m.network.node.nodeInfo.GetListenAddr().Port)
} else {
localpeerinfo.Addr = m.network.node.nodeInfo.GetExternalAddr().IP.String()
localpeerinfo.Port = int32(m.network.node.nodeInfo.GetExternalAddr().Port)
}
return &localpeerinfo, nil
}