Fix speedtest core type (2dust#8900)

* Fix speedtest core type

* Simplify code

Author: DHR60

v2rayN/ServiceLib/Handler/Builder/CoreConfigContextBuilder.cs

@@ -268,7 +268,7 @@ public static async Task<CoreConfigContextBuilderAllResult> BuildAll(Config conf
         {
             IndexId = $"inner-{Utils.GetGuid(false)}",
             ConfigType = EConfigType.ProxyChain,
-            CoreType = node.CoreType ?? ECoreType.Xray,
+            CoreType = AppManager.Instance.GetCoreType(node, node.ConfigType),
         };
         List<string?> childItems = [prevNode?.IndexId, node.IndexId, nextNode?.IndexId];
         var chainExtraItem = chainNode.GetProtocolExtra() with

v2rayN/ServiceLib/Handler/CoreConfigHandler.cs

@@ -21,7 +21,7 @@ public static async Task<RetResult> GenerateClientConfig(CoreConfigContext conte
                 _ => await GenerateClientCustomConfig(node, fileName)
             };
         }
-        else if (AppManager.Instance.GetCoreType(node, node.ConfigType) == ECoreType.sing_box)
+        else if (context.RunCoreType == ECoreType.sing_box)
         {
             result = new CoreConfigSingboxService(context).GenerateClientConfigContent();
         }
@@ -128,12 +128,11 @@ public static async Task<RetResult> GenerateClientSpeedtestConfig(Config config,
     public static async Task<RetResult> GenerateClientSpeedtestConfig(Config config, CoreConfigContext context, ServerTestItem testItem, string fileName)
     {
         var result = new RetResult();
-        var node = context.Node;
         var initPort = AppManager.Instance.GetLocalPort(EInboundProtocol.speedtest);
         var port = Utils.GetFreePort(initPort + testItem.QueueNum);
         testItem.Port = port;
 
-        if (AppManager.Instance.GetCoreType(node, node.ConfigType) == ECoreType.sing_box)
+        if (context.RunCoreType == ECoreType.sing_box)
         {
             result = new CoreConfigSingboxService(context).GenerateClientSpeedtestConfig(port);
         }

v2rayN/ServiceLib/Manager/CoreManager.cs

@@ -132,7 +132,7 @@ public async Task LoadCore(CoreConfigContext? mainContext, CoreConfigContext? pr
             return null;
         }
 
-        var coreType = AppManager.Instance.GetCoreType(node, node.ConfigType);
+        var coreType = context.RunCoreType;
         var coreInfo = CoreInfoManager.Instance.GetCoreInfo(coreType);
         return await RunProcess(coreInfo, fileName, true, false);
     }