--- /dev/null
+package chainmgr
+
+import (
+ "bytes"
+
+ log "github.com/sirupsen/logrus"
+ "github.com/tendermint/go-wire"
+
+ "github.com/vapor/errors"
+ msgs "github.com/vapor/netsync/messages"
+ "github.com/vapor/p2p"
+ "github.com/vapor/p2p/connection"
+)
+
+//ProtocolReactor handles new coming protocol message.
+type ProtocolReactor struct {
+ p2p.BaseReactor
+
+ cm *ChainManager
+}
+
+// NewProtocolReactor returns the reactor of whole blockchain.
+func NewProtocolReactor(cm *ChainManager) *ProtocolReactor {
+ pr := &ProtocolReactor{
+ cm: cm,
+ }
+ pr.BaseReactor = *p2p.NewBaseReactor("ProtocolReactor", pr)
+ return pr
+}
+
+// GetChannels implements Reactor
+func (pr *ProtocolReactor) GetChannels() []*connection.ChannelDescriptor {
+ return []*connection.ChannelDescriptor{
+ {
+ ID: msgs.BlockchainChannel,
+ Priority: 5,
+ SendQueueCapacity: 100,
+ },
+ }
+}
+
+// OnStart implements BaseService
+func (pr *ProtocolReactor) OnStart() error {
+ pr.BaseReactor.OnStart()
+ return nil
+}
+
+// OnStop implements BaseService
+func (pr *ProtocolReactor) OnStop() {
+ pr.BaseReactor.OnStop()
+}
+
+// AddPeer implements Reactor by sending our state to peer.
+func (pr *ProtocolReactor) AddPeer(peer *p2p.Peer) error {
+ pr.cm.AddPeer(peer)
+ if err := pr.cm.SendStatus(peer); err != nil {
+ return err
+ }
+ pr.cm.syncTransactions(peer.Key)
+ return nil
+}
+
+// RemovePeer implements Reactor by removing peer from the pool.
+func (pr *ProtocolReactor) RemovePeer(peer *p2p.Peer, reason interface{}) {
+ pr.cm.RemovePeer(peer.Key)
+}
+
+//decodeMessage decode msg
+func decodeMessage(bz []byte) (msgType byte, msg msgs.BlockchainMessage, err error) {
+ msgType = bz[0]
+ n := int(0)
+ r := bytes.NewReader(bz)
+ msg = wire.ReadBinary(struct{ msgs.BlockchainMessage }{}, r, msgs.MaxBlockchainResponseSize, &n, &err).(struct{ msgs.BlockchainMessage }).BlockchainMessage
+ if err != nil && n != len(bz) {
+ err = errors.New("DecodeMessage() had bytes left over")
+ }
+ return
+}
+
+// Receive implements Reactor by handling 4 types of messages (look below).
+func (pr *ProtocolReactor) Receive(chID byte, src *p2p.Peer, msgBytes []byte) {
+ msgType, msg, err := decodeMessage(msgBytes)
+ if err != nil {
+ log.WithFields(log.Fields{"module": logModule, "err": err}).Error("fail on reactor decoding message")
+ return
+ }
+
+ pr.cm.processMsg(src, msgType, msg)
+}