ET5.0服务器热更功能Demo实现

本人使用的是VS2019和Unity2019.3.0f6版本.net3.1，导入ET5.0项目后，我们来实现如何服务器代码热更.

申明：因为ET5.0原版本使用热更无法正常使用，所以修改了部分源码，至于以后ET作者是否会修复完整，导致现在修改的项目是否冲突暂不可知.

打开服务器工程

方案一（改动大）：

1.在入口类Program的Main函数中为Game.Scene添加MailBoxComponent组件

Game.Scene.AddComponent<MailBoxComponent>();

2.找到C2M_ReloadHandler类，改为

[MessageHandler]
   public class C2M_ReloadHandler : AMRpcHandler<C2M_Reload, M2C_Reload>
   {
       protected override async ETTask Run(Session session, C2M_Reload request, M2C_Reload response, Action reply)
       {

             if (!(request.Account == "XXX" && request.Password == "XXX"))
           {
               Log.Error($"error reload account and password: {MongoHelper.ToJson(request)}");
               return;
           }
           System.Collections.Generic.List<StartConfig> allConfig = Game.Scene.GetComponent<StartConfigComponent>().AllConfig.List;
           NetInnerComponent netInnerComponent = Game.Scene.GetComponent<NetInnerComponent>();
           foreach (StartConfig startConfig in allConfig)
           {
               InnerConfig innerConfig = startConfig.GetComponent<InnerConfig>();
               Session serverSession = netInnerComponent.Get(innerConfig.Address);
               //await serverSession.Call(new M2A_Reload());
               await ActorMessageSenderComponent.Instance.Call(startConfig.SceneInstanceId, new M2A_Reload());
               //Game.EventSystem.Add(DLLType.Hotfix, DllHelper.GetHotfixAssembly());
               Log.Info("热更成功");
           }
           reply();
       }
   }

3.找到M2A_ReloadHandler类，修改为

//[MessageHandler]

[ActorMessageHandler]
   public class M2A_ReloadHandler : AMActorRpcHandler<Scene, M2A_Reload, A2M_Reload>
   {
       protected override async ETTask Run(Scene scene, M2A_Reload request, A2M_Reload response, Action reply)
       {
           Game.EventSystem.Add(DLLType.Hotfix, DllHelper.GetHotfixAssembly());
           reply();
           await ETTask.CompletedTask;
       }
   }

4.找到InnerMessageDispatcherHelper类的HandleIActorRequest方法，只需将replyId 后移：

//long replyId = IdGenerater.GetProcessId(iActorRequest.ActorId);

iActorRequest.ActorId = iActorRequest.ActorId & IdGenerater.HeadMask | IdGenerater.Head;
long replyId = IdGenerater.GetProcessId(iActorRequest.ActorId);

至此，就能实现服务器热更.

方案二（改动小）：将热更实现的具体代码放入请求处理函数中

1. 找到C2M_ReloadHandler 类，修改如下

//Unity中需要输入的账号密码
           if (!(request.Account == "XXX" && request.Password == "XXX"))
           {
               Log.Error($"error reload account and password: {MongoHelper.ToJson(request)}");
               return;
           }

System.Collections.Generic.List<StartConfig> allConfig = Game.Scene.GetComponent<StartConfigComponent>().AllConfig.List;
           NetInnerComponent netInnerComponent = Game.Scene.GetComponent<NetInnerComponent>();
           foreach (StartConfig startConfig in allConfig)
           {
               InnerConfig innerConfig = startConfig.GetComponent<InnerConfig>();
               Session serverSession = netInnerComponent.Get(innerConfig.Address);
               //await serverSession.Call(new M2A_Reload());
               Game.EventSystem.Add(DLLType.Hotfix, DllHelper.GetHotfixAssembly());
               Log.Info("热更成功");
           }
           reply();
       }
   }

测试：

1.先编译整个Server工程

2.Unity开启Init场景，打开Tools->命令行配置->启动服务器