// Implements Reactor func (bcR *BlockchainReactor) Receive(chId byte, src *p2p.Peer, msgBytes []byte) { _, msg, err := DecodeMessage(msgBytes) if err != nil { log.Warn("Error decoding message", "error", err) return } log.Info("Received message", "msg", msg) switch msg := msg.(type) { case *bcBlockRequestMessage: // Got a request for a block. Respond with block if we have it. block := bcR.store.LoadBlock(msg.Height) if block != nil { msg := &bcBlockResponseMessage{Block: block} queued := src.TrySend(BlockchainChannel, msg) if !queued { // queue is full, just ignore. } } else { // TODO peer is asking for things we don't have. } case *bcBlockResponseMessage: // Got a block. bcR.pool.AddBlock(msg.Block, src.Key) case *bcStatusRequestMessage: // Send peer our state. queued := src.TrySend(BlockchainChannel, &bcStatusResponseMessage{bcR.store.Height()}) if !queued { // sorry } case *bcStatusResponseMessage: // Got a peer status. Unverified. bcR.pool.SetPeerHeight(src.Key, msg.Height) default: log.Warn(Fmt("Unknown message type %v", reflect.TypeOf(msg))) } }