长安链源码分析启动（7）

// Start ChainMakerServer.func (server *ChainMakerServer) Start() error {	// 1) 启动网络	if err := server.net.Start(); err != nil {		log.Errorf("[Net] start failed, %s", err.Error())		return err	}	log.Infof("[Net] start success!")
	//初始化加密引擎	engine.InitCryptoEngine(localconf.ChainMakerConfig.CryptoEngine, false)
	// 2) 启动每一个链	server.blockchains.Range(func(_, value interface{}) bool {		chain, _ := value.(*Blockchain)		go startBlockchain(chain)		return true	})	// 3) ready	close(server.readyC)	return nil}

func (l *LiquidNet) Start() error {	l.lock.Lock()	defer l.lock.Unlock()
	var err error
	if l.startUp {		return ErrorNetRunning	}
	// confirm config	l.confirmConfig()
	// 加载私钥	l.hostCfg.PrivateKey, err = asym.PrivateKeyFromPEM(l.cryptoCfg.KeyBytes, nil)	if err != nil {		return err	}
	// 确认网络类型	var netType lHost.NetworkType	firstListenAddr := l.hostCfg.ListenAddresses[0]	netType = lHost.ConfirmNetworkTypeByAddr(firstListenAddr)	if netType == lHost.UnknownNetwork {		return ErrorWrongAddressOrUnsupported	}	log.Infof("[LiquidNet] network type: %s", netType)
	// 设置链的trust roots	err = l.setUpChainTrustRoots()	if err != nil {		return err	}
  //设置TlsConfig	err = l.setUpTlsConfig(netType)	if err != nil {		return err	}
	// 创建一个新的Host	newHost, err := l.hostCfg.NewHost(netType, l.context, log)	if err != nil {		return err	}
	l.host = newHost	// bind notifiee	l.bindNotifiee()
	//开启适配pkt	if l.extensionsCfg.EnablePkt {		log.Infof("[LiquidNet] Pkt enabled.")		l.pktAdapter = newPktAdapter(l.host, log)		l.pktAdapter.run()		err = l.host.RegisterMsgPayloadHandler(pktProtocol, l.pktAdapter.msgPayloadFunc)		if err != nil {			return err		}	}
	//开启优先级控制	if l.extensionsCfg.EnablePriorityCtrl {		log.Infof("[LiquidNet] priority control enabled.")		l.priorityController = priorityblocker.NewBlocker(nil)		l.priorityController.Run()	}
	// 启动host	err = newHost.Start()	if err != nil {		log.Errorf("[LiquidNet] host start failed, %s", err.Error())		return err	}
	// 启动自动发现服务	l.discoveryService, err = protocoldiscovery.NewProtocolBasedDiscovery(		l.host,		protocoldiscovery.WithLogger(log),		protocoldiscovery.WithMaxQuerySize(3),	)	if err != nil {		log.Errorf("[LiquidNet] set up discovery service failed, %s", err.Error())		return err	}	log.Info("[LiquidNet] discovery service set up.")	l.startUp = true	return err}