refactor : 重构网络下载模块

新增通用下载接口，扩展了默认的Unity引擎下载器
2026-01-05 19:44:10 +08:00
parent 1884fab0c2
commit c87efdb509
89 changed files with 2597 additions and 1641 deletions
@@ -11,6 +11,11 @@ namespace YooAsset
        protected readonly Dictionary<string, string> _records = new Dictionary<string, string>(10000);
        protected string _packageRoot;

+        /// <summary>
+        /// 下载后台接口
+        /// </summary>
+        public IDownloadBackend DownloadBackend { private set; get; }
+
        /// <summary>
        /// 包裹名称
        /// </summary>
@@ -145,6 +150,10 @@ namespace YooAsset
                throw new YooFileSystemException($"{nameof(DefaultEditorFileSystem)} package root is null or empty !");

            _packageRoot = packageRoot;
+
+            // 创建默认的下载后台接口
+            if (DownloadBackend == null)
+                DownloadBackend = new UnityWebRequestBackend(DownloadSystemHelper.UnityWebRequestCreater);
        }
        public virtual void OnDestroy()
        {
@@ -17,7 +17,7 @@ namespace YooAsset
        // 下载参数
        protected readonly DefaultEditorFileSystem _fileSystem;
        protected readonly DownloadFileOptions _options;
-        protected UnityVirtualBundleRequestOperation _unityDownloadFileOp;
+        protected IDownloadFileRequest _downloadFileOp;

        protected int _requestCount = 0;
        protected float _tryAgainTimer = 0;
@@ -68,29 +68,22 @@ namespace YooAsset

                string url = GetRequestURL();
                int speed = _fileSystem.VirtualDownloadSpeed;
-                _unityDownloadFileOp = new UnityVirtualBundleRequestOperation(Bundle, speed, url);
-                _unityDownloadFileOp.StartOperation();
+                var args = new DownloadSimulateRequestArgs(url, Bundle.FileSize, speed);
+                _downloadFileOp = _fileSystem.DownloadBackend.CreateSimulateRequest(args);
+                _downloadFileOp.SendRequest();
                _steps = ESteps.CheckRequest;
            }

            // 检测下载结果
            if (_steps == ESteps.CheckRequest)
            {
-                if (IsWaitForAsyncComplete)
-                    _unityDownloadFileOp.WaitForAsyncComplete();
-
-                // 因为并发数量限制，下载器可能被挂起！
-                if (_unityDownloadFileOp.Status == EOperationStatus.None)
+                Progress = _downloadFileOp.DownloadProgress;
+                DownloadedBytes = _downloadFileOp.DownloadedBytes;
+                DownloadProgress = _downloadFileOp.DownloadProgress;
+                if (_downloadFileOp.IsDone == false)
                    return;

-                _unityDownloadFileOp.UpdateOperation();
-                Progress = _unityDownloadFileOp.Progress;
-                DownloadedBytes = _unityDownloadFileOp.DownloadedBytes;
-                DownloadProgress = _unityDownloadFileOp.DownloadProgress;
-                if (_unityDownloadFileOp.IsDone == false)
-                    return;
-
-                if (_unityDownloadFileOp.Status == EOperationStatus.Succeed)
+                if (_downloadFileOp.Status == EDownloadRequestStatus.Succeed)
                {
                    _fileSystem.RecordDownloadFile(Bundle);
                    _steps = ESteps.Done;
@@ -101,13 +94,13 @@ namespace YooAsset
                    if (IsWaitForAsyncComplete == false && _failedTryAgain > 0)
                    {
                        _steps = ESteps.TryAgain;
-                        YooLogger.Warning($"Failed download : {_unityDownloadFileOp.URL} Try again !");
+                        YooLogger.Warning($"Failed download : {_downloadFileOp.URL} Try again !");
                    }
                    else
                    {
                        _steps = ESteps.Done;
                        Status = EOperationStatus.Failed;
-                        Error = _unityDownloadFileOp.Error;
+                        Error = _downloadFileOp.Error;
                        YooLogger.Error(Error);
                    }
                }
@@ -130,13 +123,11 @@ namespace YooAsset
        }
        internal override void InternalWaitForAsyncComplete()
        {
-            while (true)
+            if (_steps != ESteps.Done)
            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
+                _steps = ESteps.Done;
+                Status = EOperationStatus.Failed;
+                Error = $"Try load bundle {Bundle.BundleName} from remote !";
            }
        }