update download system

新增方法YooAssets.SetDownloadSystemRedirectLimit()

Assets/YooAsset/Runtime/AssetSystem/Loader/AssetBundleWebLoader.cs

@@ -171,17 +171,17 @@ namespace YooAsset
 				if (CacheSystem.DisableUnityCacheOnWebGL)
 				{
 					_webRequest = UnityWebRequestAssetBundle.GetAssetBundle(FileLoadPath);
-					_webRequest.SendWebRequest();
-					_steps = ESteps.CheckLoadWebFile;
 				}
 				else
 				{
 					var hash = Hash128.Parse(MainBundleInfo.Bundle.FileHash);
 					_webRequest = UnityWebRequestAssetBundle.GetAssetBundle(FileLoadPath, hash);
+				}
+
+				DownloadSystem.SetUnityWebRequest(_webRequest);
 				_webRequest.SendWebRequest();
 				_steps = ESteps.CheckLoadWebFile;
 			}
-			}
 
 			// 6. 检测AssetBundle加载结果
 			if (_steps == ESteps.CheckLoadWebFile)

Assets/YooAsset/Runtime/DownloadSystem/DownloadSystem.cs

@@ -32,6 +32,11 @@ namespace YooAsset
 		/// </summary>
 		public static CertificateHandler CertificateHandlerInstance = null;
 
+		/// <summary>
+		/// 网络重定向次数
+		/// </summary>
+		public static int RedirectLimit { set; get; } = -1;
+
 		/// <summary>
 		/// 启用断点续传功能文件的最小字节数
 		/// </summary>
@@ -128,11 +133,29 @@ namespace YooAsset
 		/// </summary>
 		public static UnityWebRequest NewRequest(string requestURL)
 		{
+			UnityWebRequest webRequest;
 			if (RequestDelegate != null)
-				return RequestDelegate.Invoke(requestURL);
+				webRequest = RequestDelegate.Invoke(requestURL);
+			else
+				webRequest = new UnityWebRequest(requestURL, UnityWebRequest.kHttpVerbGET);
 
-			var request = new UnityWebRequest(requestURL, UnityWebRequest.kHttpVerbGET);
+			SetUnityWebRequest(webRequest);
-			return request;
+			return webRequest;
+		}
+
+		/// <summary>
+		/// 设置网络请求的自定义参数
+		/// </summary>
+		public static void SetUnityWebRequest(UnityWebRequest webRequest)
+		{
+			if (RedirectLimit >= 0)
+				webRequest.redirectLimit = RedirectLimit;
+
+			if (CertificateHandlerInstance != null)
+			{
+				webRequest.certificateHandler = CertificateHandlerInstance;
+				webRequest.disposeCertificateHandlerOnDispose = false;
+			}
 		}
 
 		/// <summary>

Assets/YooAsset/Runtime/DownloadSystem/Downloader/FileDownloader.cs

@@ -101,13 +101,6 @@ namespace YooAsset
 				handler.removeFileOnAbort = true;
 				_webRequest.downloadHandler = handler;
 				_webRequest.disposeDownloadHandlerOnDispose = true;
-
-				if (DownloadSystem.CertificateHandlerInstance != null)
-				{
-					_webRequest.certificateHandler = DownloadSystem.CertificateHandlerInstance;
-					_webRequest.disposeCertificateHandlerOnDispose = false;
-				}
-
 				_webRequest.SendWebRequest();
 				_steps = ESteps.CheckDownload;
 			}
@@ -137,13 +130,6 @@ namespace YooAsset
 				_webRequest.disposeDownloadHandlerOnDispose = true;
 				if (fileLength > 0)
 					_webRequest.SetRequestHeader("Range", $"bytes={fileLength}-");
-
-				if (DownloadSystem.CertificateHandlerInstance != null)
-				{
-					_webRequest.certificateHandler = DownloadSystem.CertificateHandlerInstance;
-					_webRequest.disposeCertificateHandlerOnDispose = false;
-				}
-
 				_webRequest.SendWebRequest();
 				_steps = ESteps.CheckDownload;
 			}

Assets/YooAsset/Runtime/YooAssets.cs

@@ -217,6 +217,21 @@ namespace YooAsset
 			DownloadSystem.RequestDelegate = requestDelegate;
 		}
 
+		/// <summary>
+		/// 设置下载系统参数，网络重定向次数（Unity引擎默认值32）
+		/// 注意：不支持设置为负值
+		/// </summary>
+		public static void SetDownloadSystemRedirectLimit(int redirectLimit)
+		{
+			if (redirectLimit < 0)
+			{
+				YooLogger.Warning($"Invalid param value : {redirectLimit}");
+				return;
+			}
+
+			DownloadSystem.RedirectLimit = redirectLimit;
+		}
+
 		/// <summary>
 		/// 设置异步系统参数，每帧执行消耗的最大时间切片（单位：毫秒）
 		/// </summary>