6 log "github.com/sirupsen/logrus"
7 "github.com/tendermint/go-wire"
9 "github.com/vapor/errors"
10 msgs "github.com/vapor/netsync/messages"
11 "github.com/vapor/p2p"
12 "github.com/vapor/p2p/connection"
16 errProtocolHandshakeTimeout = errors.New("Protocol handshake timeout")
17 errStatusRequest = errors.New("Status request error")
20 //ProtocolReactor handles new coming protocol message.
21 type ProtocolReactor struct {
27 // NewProtocolReactor returns the reactor of whole blockchain.
28 func NewProtocolReactor(cm *ChainManager) *ProtocolReactor {
29 pr := &ProtocolReactor{
32 pr.BaseReactor = *p2p.NewBaseReactor("ProtocolReactor", pr)
36 // GetChannels implements Reactor
37 func (pr *ProtocolReactor) GetChannels() []*connection.ChannelDescriptor {
38 return []*connection.ChannelDescriptor{
40 ID: msgs.BlockchainChannel,
42 SendQueueCapacity: 100,
47 // OnStart implements BaseService
48 func (pr *ProtocolReactor) OnStart() error {
49 pr.BaseReactor.OnStart()
53 // OnStop implements BaseService
54 func (pr *ProtocolReactor) OnStop() {
55 pr.BaseReactor.OnStop()
58 // AddPeer implements Reactor by sending our state to peer.
59 func (pr *ProtocolReactor) AddPeer(peer *p2p.Peer) error {
61 if err := pr.cm.SendStatus(peer); err != nil {
64 pr.cm.syncTransactions(peer.Key)
68 // RemovePeer implements Reactor by removing peer from the pool.
69 func (pr *ProtocolReactor) RemovePeer(peer *p2p.Peer, reason interface{}) {
70 pr.cm.RemovePeer(peer.Key)
73 //decodeMessage decode msg
74 func decodeMessage(bz []byte) (msgType byte, msg msgs.BlockchainMessage, err error) {
77 r := bytes.NewReader(bz)
78 msg = wire.ReadBinary(struct{ msgs.BlockchainMessage }{}, r, msgs.MaxBlockchainResponseSize, &n, &err).(struct{ msgs.BlockchainMessage }).BlockchainMessage
79 if err != nil && n != len(bz) {
80 err = errors.New("DecodeMessage() had bytes left over")
85 // Receive implements Reactor by handling 4 types of messages (look below).
86 func (pr *ProtocolReactor) Receive(chID byte, src *p2p.Peer, msgBytes []byte) {
87 msgType, msg, err := decodeMessage(msgBytes)
89 log.WithFields(log.Fields{"module": logModule, "err": err}).Error("fail on reactor decoding message")
93 pr.cm.processMsg(src, msgType, msg)