Update DownloadSystem

Assets/YooAsset/Runtime/DownloadSystem/DownloaderBase.cs

@@ -0,0 +1,122 @@
+
+namespace YooAsset
+{
+	internal abstract class DownloaderBase
+	{
+		protected enum ESteps
+		{
+			None,
+			CreateDownload,
+			CheckDownload,
+			TryAgain,
+			Succeed,
+			Failed,
+		}
+
+		protected readonly BundleInfo _bundleInfo;
+
+		protected ESteps _steps = ESteps.None;
+
+		protected int _timeout;
+		protected int _failedTryAgain;
+		protected int _requestCount;
+		protected string _requestURL;
+
+		protected string _lastError = string.Empty;
+		protected float _downloadProgress = 0f;
+		protected ulong _downloadedBytes = 0;
+
+
+		/// <summary>
+		/// 下载进度（0-100f）
+		/// </summary>
+		public float DownloadProgress
+		{
+			get { return _downloadProgress; }
+		}
+
+		/// <summary>
+		/// 已经下载的总字节数
+		/// </summary>
+		public ulong DownloadedBytes
+		{
+			get { return _downloadedBytes; }
+		}
+
+
+		internal DownloaderBase(BundleInfo bundleInfo)
+		{
+			_bundleInfo = bundleInfo;
+		}
+		internal void SendRequest(int failedTryAgain, int timeout)
+		{
+			if (string.IsNullOrEmpty(_bundleInfo.LocalPath))
+				throw new System.ArgumentNullException();
+
+			if (_steps == ESteps.None)
+			{
+				_failedTryAgain = failedTryAgain;
+				_timeout = timeout;
+				_steps = ESteps.CreateDownload;
+			}
+		}
+		internal void SetDone()
+		{
+			_steps = ESteps.Succeed;
+		}
+		internal abstract void Update();
+
+		/// <summary>
+		/// 获取网络请求地址
+		/// </summary>
+		protected string GetRequestURL()
+		{
+			// 轮流返回请求地址
+			_requestCount++;
+			if (_requestCount % 2 == 0)
+				return _bundleInfo.RemoteFallbackURL;
+			else
+				return _bundleInfo.RemoteMainURL;
+		}
+
+		/// <summary>
+		/// 获取资源包信息
+		/// </summary>
+		public BundleInfo GetBundleInfo()
+		{
+			return _bundleInfo;
+		}
+
+		/// <summary>
+		/// 检测下载器是否已经完成（无论成功或失败）
+		/// </summary>
+		public bool IsDone()
+		{
+			return _steps == ESteps.Succeed || _steps == ESteps.Failed;
+		}
+
+		/// <summary>
+		/// 下载过程是否发生错误
+		/// </summary>
+		public bool HasError()
+		{
+			return _steps == ESteps.Failed;
+		}
+
+		/// <summary>
+		/// 报告错误信息
+		/// </summary>
+		public void ReportError()
+		{
+			YooLogger.Error($"Failed to download : {_requestURL} Error : {_lastError}");
+		}
+
+		/// <summary>
+		/// 获取最近一条错误日志
+		/// </summary>
+		public string GetLastError()
+		{
+			return _lastError;
+		}
+	}
+}

Assets/YooAsset/Runtime/DownloadSystem/DownloaderBase.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: dda4d1eafa2c9f34fade509f8dae9c04
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/YooAsset/Runtime/DownloadSystem/FileDownloader.cs

@@ -7,82 +7,39 @@ using UnityEngine.Networking;
 
 namespace YooAsset
 {
-	internal class FileDownloader
+	internal sealed class FileDownloader : DownloaderBase
 	{
-		private enum ESteps
-		{
-			None,
-			CreateDownload,
-			CheckDownload,
-			TryAgain,
-			Succeed,
-			Failed,
-		}
-
-		private readonly BundleInfo _bundleInfo;
 		private UnityWebRequest _webRequest;
 		private UnityWebRequestAsyncOperation _operationHandle;
 
-		private ESteps _steps = ESteps.None;
-		private string _lastError = string.Empty;
-
-		private int _timeout;
-		private int _failedTryAgain;
-		private int _requestCount;
-		private string _requestURL;
-
 		// 重置变量
 		private bool _isAbort = false;
 		private ulong _latestDownloadBytes;
 		private float _latestDownloadRealtime;
 		private float _tryAgainTimer;
 
-		/// <summary>
-		/// 下载进度（0-100f）
-		/// </summary>
-		public float DownloadProgress { private set; get; }
 
-		/// <summary>
-		/// 已经下载的总字节数
-		/// </summary>
-		public ulong DownloadedBytes { private set; get; }
-
-
-		internal FileDownloader(BundleInfo bundleInfo)
+		internal FileDownloader(BundleInfo bundleInfo) : base(bundleInfo)
 		{
-			_bundleInfo = bundleInfo;
 		}
-		internal void SendRequest(int failedTryAgain, int timeout)
-		{
-			if (string.IsNullOrEmpty(_bundleInfo.LocalPath))
-				throw new ArgumentNullException();
-
-			if (_steps == ESteps.None)
-			{
-				_failedTryAgain = failedTryAgain;
-				_timeout = timeout;
-				_steps = ESteps.CreateDownload;
-			}
-		}
-		internal void Update()
+		internal override void Update()
 		{
 			if (_steps == ESteps.None)
 				return;
-			if (_steps == ESteps.Failed || _steps == ESteps.Succeed)
+			if (IsDone())
 				return;
 
 			// 创建下载器
 			if (_steps == ESteps.CreateDownload)
 			{
 				// 重置变量
-				DownloadProgress = 0f;
-				DownloadedBytes = 0;
+				_downloadProgress = 0f;
+				_downloadedBytes = 0;
 				_isAbort = false;
 				_latestDownloadBytes = 0;
 				_latestDownloadRealtime = Time.realtimeSinceStartup;
 				_tryAgainTimer = 0f;
 
-				_requestCount++;
 				_requestURL = GetRequestURL();
 				_webRequest = new UnityWebRequest(_requestURL, UnityWebRequest.kHttpVerbGET);
 				DownloadHandlerFile handler = new DownloadHandlerFile(_bundleInfo.LocalPath);
@@ -96,8 +53,8 @@ namespace YooAsset
 			// 检测下载结果
 			if (_steps == ESteps.CheckDownload)
 			{
-				DownloadProgress = _webRequest.downloadProgress * 100f;
-				DownloadedBytes = _webRequest.downloadedBytes;
+				_downloadProgress = _webRequest.downloadProgress * 100f;
+				_downloadedBytes = _webRequest.downloadedBytes;
 				if (_operationHandle.isDone == false)
 				{
 					CheckTimeout();
@@ -105,47 +62,50 @@ namespace YooAsset
 				}
 
 				// 检查网络错误
-				bool isError = false;
+				bool hasError = false;
 #if UNITY_2020_3_OR_NEWER
 				if (_webRequest.result != UnityWebRequest.Result.Success)
 				{
-					isError = true;
+					hasError = true;
 					_lastError = _webRequest.error;
 				}
 #else
 				if (_webRequest.isNetworkError || _webRequest.isHttpError)
 				{
-					isError = true;
+					hasError = true;
 					_lastError = _webRequest.error;
 				}
 #endif
 
 				// 检查文件完整性
-				if (isError == false)
+				if (hasError == false)
 				{
 					// 注意：如果文件验证失败需要删除文件
 					if (DownloadSystem.CheckContentIntegrity(_bundleInfo) == false)
 					{
-						isError = true;
+						hasError = true;
 						_lastError = $"Verification failed";
-						if (File.Exists(_bundleInfo.LocalPath))
-							File.Delete(_bundleInfo.LocalPath);
 					}
 				}
 
-				if (isError)
+				if (hasError == false)
+				{
+					_steps = ESteps.Succeed;
+					DownloadSystem.CacheVerifyFile(_bundleInfo.Hash, _bundleInfo.BundleName);
+				}
+				else
 				{
 					ReportError();
+
+					if (File.Exists(_bundleInfo.LocalPath))
+						File.Delete(_bundleInfo.LocalPath);
+
+					// 失败后重新尝试
 					if (_failedTryAgain > 0)
 						_steps = ESteps.TryAgain;
 					else
 						_steps = ESteps.Failed;
 				}
-				else
-				{
-					_steps = ESteps.Succeed;
-					DownloadSystem.CacheVerifyFile(_bundleInfo.Hash, _bundleInfo.BundleName);
-				}
 
 				// 释放下载器
 				DisposeWebRequest();
@@ -155,7 +115,7 @@ namespace YooAsset
 			if (_steps == ESteps.TryAgain)
 			{
 				_tryAgainTimer += Time.unscaledDeltaTime;
-				if (_tryAgainTimer > 0.5f)
+				if (_tryAgainTimer > 1f)
 				{
 					_failedTryAgain--;
 					_steps = ESteps.CreateDownload;
@@ -163,19 +123,6 @@ namespace YooAsset
 				}
 			}
 		}
-		internal void SetDone()
-		{
-			_steps = ESteps.Succeed;
-		}
-
-		private string GetRequestURL()
-		{
-			// 轮流返回请求地址
-			if (_requestCount % 2 == 0)
-				return _bundleInfo.RemoteFallbackURL;
-			else
-				return _bundleInfo.RemoteMainURL;
-		}
 		private void CheckTimeout()
 		{
 			// 注意：在连续时间段内无新增下载数据及判定为超时
@@ -205,46 +152,5 @@ namespace YooAsset
 				_operationHandle = null;
 			}
 		}
-
-		/// <summary>
-		/// 获取资源包信息
-		/// </summary>
-		public BundleInfo GetBundleInfo()
-		{
-			return _bundleInfo;
-		}
-
-		/// <summary>
-		/// 检测下载器是否已经完成（无论成功或失败）
-		/// </summary>
-		public bool IsDone()
-		{
-			return _steps == ESteps.Succeed || _steps == ESteps.Failed;
-		}
-
-		/// <summary>
-		/// 下载过程是否发生错误
-		/// </summary>
-		/// <returns></returns>
-		public bool HasError()
-		{
-			return _steps == ESteps.Failed;
-		}
-
-		/// <summary>
-		/// 报告错误信息
-		/// </summary>
-		public void ReportError()
-		{
-			YooLogger.Error($"Failed to download : {_requestURL} Error : {_lastError}");
-		}
-
-		/// <summary>
-		/// 获取最近一条错误日志
-		/// </summary>
-		public string GetLastError()
-		{
-			return _lastError;
-		}
 	}
 }

Assets/YooAsset/Runtime/DownloadSystem/HttpDownloader.cs

@@ -0,0 +1,243 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.IO;
+using System.Net;
+using System.Net.Security;
+using System.Threading;
+
+namespace YooAsset
+{
+	internal sealed class HttpDownloader : DownloaderBase
+	{
+		/// <summary>
+		/// 多线程下载器
+		/// </summary>
+		private class ThreadDownloader
+		{
+			private const int BufferSize = 1042 * 4;
+
+			private Thread _thread;
+			private string _url;
+			private string _savePath;
+			private string _fileHash;
+			private string _fileCRC;
+			private long _fileSize;
+			private int _timeout;
+
+			/// <summary>
+			/// 下载是否结束
+			/// </summary>
+			public bool IsDone = false;
+
+			/// <summary>
+			/// 下载结果（成功或失败）
+			/// </summary>
+			public bool Result = false;
+
+			/// <summary>
+			/// 错误日志
+			/// </summary>
+			public string Error = string.Empty;
+
+			/// <summary>
+			/// 下载进度
+			/// </summary>
+			public float DownloadProgress = 0f;
+
+			/// <summary>
+			/// 已经下载的总字节数
+			/// </summary>
+			public ulong DownloadedBytes = 0;
+
+
+			/// <summary>
+			/// 开始下载
+			/// </summary>
+			public void Run(string url, string savePath, string fileHash, string fileCRC, long fileSize, int timeout)
+			{
+				_url = url;
+				_savePath = savePath;
+				_fileHash = fileHash;
+				_fileCRC = fileCRC;
+				_fileSize = fileSize;
+				_timeout = timeout;
+
+				_thread = new Thread(ThreadRun);
+				_thread.IsBackground = true;
+				_thread.Start();
+			}
+
+			/// <summary>
+			/// 销毁下载器
+			/// </summary>
+			public void Dispose()
+			{
+				if (_thread != null)
+				{
+					_thread.Abort();
+					_thread = null;
+				}
+			}
+
+
+			private void ThreadRun()
+			{
+				long fileTotalSize = _fileSize;
+
+				FileStream fileStream = null;
+				Stream webStream = null;
+				HttpWebResponse fileResponse = null;
+
+				try
+				{
+					// 创建文件流
+					fileStream = new FileStream(_savePath, FileMode.OpenOrCreate, FileAccess.Write);
+					long fileLength = fileStream.Length;
+
+					// 创建HTTP下载请求
+					HttpWebRequest fileRequest = WebRequest.Create(_url) as HttpWebRequest;
+					fileRequest.Timeout = _timeout;
+					fileRequest.ReadWriteTimeout = _timeout;
+					fileRequest.ProtocolVersion = HttpVersion.Version10;
+					if (fileLength > 0)
+					{
+						// 注意：设置远端请求文件的起始位置
+						fileRequest.AddRange(fileLength);
+						// 注意：设置本地文件流的起始位置
+						fileStream.Seek(fileLength, SeekOrigin.Begin);
+					}
+
+					// 读取下载数据并保存到文件
+					fileResponse = fileRequest.GetResponse() as HttpWebResponse;
+					webStream = fileResponse.GetResponseStream();
+					byte[] buffer = new byte[BufferSize];
+					while (true)
+					{
+						int length = webStream.Read(buffer, 0, buffer.Length);
+						if (length <= 0)
+							break;
+
+						fileStream.Write(buffer, 0, length);
+
+						// 计算下载进度
+						// 注意：原子操作保证数据安全
+						fileLength += length;
+						float progress = fileLength / fileTotalSize;
+						DownloadProgress = progress;
+						DownloadedBytes = (ulong)fileLength;
+					}
+
+					// 验证下载文件完整性
+					bool verfiyResult = DownloadSystem.CheckContentIntegrity(_savePath, _fileSize, _fileCRC);
+					if (verfiyResult)
+					{
+						Result = true;
+					}
+					else
+					{
+						Result = false;
+						Error = $"Verify file content failed : {_fileHash}";
+					}
+				}
+				catch (Exception e)
+				{
+					Result = false;
+					Error = e.Message;
+				}
+				finally
+				{
+					if (webStream != null)
+					{
+						webStream.Close();
+						webStream.Dispose();
+					}
+
+					if (fileResponse != null)
+					{
+						fileResponse.Close();
+					}
+
+					if (fileStream != null)
+					{
+						fileStream.Close();
+						fileStream.Dispose();
+					}
+
+					IsDone = true;
+				}
+			}
+		}
+
+
+		private ThreadDownloader _threadDownloader;
+		private float _tryAgainTimer;
+
+		internal HttpDownloader(BundleInfo bundleInfo) : base(bundleInfo)
+		{
+		}
+		internal override void Update()
+		{
+			if (_steps == ESteps.None)
+				return;
+			if (IsDone())
+				return;
+
+			if (_steps == ESteps.CreateDownload)
+			{
+				// 重置变量
+				_downloadProgress = 0f;
+				_downloadedBytes = 0;
+				_tryAgainTimer = 0f;
+
+				_requestURL = GetRequestURL();
+				_threadDownloader = new ThreadDownloader();
+				_threadDownloader.Run(_requestURL, _bundleInfo.LocalPath, _bundleInfo.Hash, _bundleInfo.CRC, _bundleInfo.SizeBytes, _timeout);
+				_steps = ESteps.CheckDownload;
+			}
+
+			if (_steps == ESteps.CheckDownload)
+			{
+				_downloadProgress = _threadDownloader.DownloadProgress * 100f;
+				_downloadedBytes = _threadDownloader.DownloadedBytes;
+				if (_threadDownloader.IsDone == false)
+					return;
+
+				if (_threadDownloader.Result)
+				{
+					DownloadSystem.CacheVerifyFile(_bundleInfo.Hash, _bundleInfo.BundleName);
+					_steps = ESteps.Succeed;
+				}
+				else
+				{
+					_lastError = _threadDownloader.Error;
+					ReportError();
+
+					if (File.Exists(_bundleInfo.LocalPath))
+						File.Delete(_bundleInfo.LocalPath);
+
+					// 失败后重新尝试
+					if (_failedTryAgain > 0)
+						_steps = ESteps.TryAgain;
+					else
+						_steps = ESteps.Failed;
+				}
+
+				// 释放下载器
+				_threadDownloader.Dispose();
+			}
+
+			// 重新尝试下载
+			if (_steps == ESteps.TryAgain)
+			{
+				_tryAgainTimer += UnityEngine.Time.unscaledDeltaTime;
+				if (_tryAgainTimer > 1f)
+				{
+					_failedTryAgain--;
+					_steps = ESteps.CreateDownload;
+					YooLogger.Warning($"Try again download : {_requestURL}");
+				}
+			}
+		}
+	}
+}

Assets/YooAsset/Runtime/PatchSystem/Download/HttpDownloader.cs

@@ -1,266 +0,0 @@
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.IO;
-using System.Net;
-using System.Net.Security;
-using System.Threading;
-
-namespace YooAsset
-{
-	internal class HttpDownloader
-	{
-		private enum ESteps
-		{
-			None,
-			CreateDownload,
-			CheckDownload,
-			Succeed,
-			Failed,
-		}
-
-		private readonly BundleInfo _bundleInfo;
-		private ESteps _steps = ESteps.None;
-
-		// 线程
-		private bool _threadOver = false;
-		private bool _threadResult = false;
-		private string _threadError = string.Empty;
-		private Thread _thread;
-
-		// 保留参数
-		private int _timeout;
-		private int _failedTryAgain;
-		private int _requestCount;
-
-		// 下载结果
-		private string _downloadError = string.Empty;
-		private float _downloadProgress = 0f;
-		private long _downloadBytes = 0;
-
-		/// <summary>
-		/// 下载进度（0-100f）
-		/// </summary>
-		public float DownloadProgress 
-		{ 
-			get
-			{
-				return _downloadProgress;
-			}
-		}
-		
-		/// <summary>
-		/// 已经下载的总字节数
-		/// </summary>
-		public long DownloadedBytes
-		{
-			get
-			{
-				return _downloadBytes;
-			}
-		}
-
-
-		internal HttpDownloader(BundleInfo bundleInfo)
-		{
-			_bundleInfo = bundleInfo;
-		}
-		internal void SendRequest(int failedTryAgain, int timeout)
-		{
-			_failedTryAgain = failedTryAgain;
-			_timeout = timeout;
-		}
-		internal void Update()
-		{
-			if (_steps == ESteps.None)
-				return;
-			if (_steps == ESteps.Succeed || _steps == ESteps.Failed)
-				return;
-
-			if(_steps == ESteps.CreateDownload)
-			{
-				_downloadError = string.Empty;
-				_downloadProgress = 0f;
-				_downloadBytes = 0;
-
-				_threadOver = false;
-				_threadResult = false;
-				_threadError = string.Empty;
-				_thread = new Thread(ThreadRun);
-				_thread.IsBackground = true;
-				_thread.Start();
-				_steps = ESteps.CheckDownload;
-			}
-
-			if(_steps == ESteps.CheckDownload)
-			{
-				if (_threadOver == false)
-					return;
-
-				if(_thread != null)
-				{
-					_thread.Abort();
-					_thread = null;
-				}
-
-				_downloadError = _threadError;
-				if (_threadResult)
-				{
-					DownloadSystem.CacheVerifyFile(_bundleInfo.Hash, _bundleInfo.BundleName);
-					_steps = ESteps.Succeed;
-				}
-				else
-				{
-					// 失败后重新尝试
-					if(_failedTryAgain > 0)
-					{
-						_failedTryAgain--;
-						_steps = ESteps.CreateDownload;
-					}
-					else
-					{
-						_steps = ESteps.Failed;	
-					}
-				}
-			}
-		}
-		internal void SetDone()
-		{
-			_steps = ESteps.Succeed;
-		}
-
-		/// <summary>
-		/// 获取资源包信息
-		/// </summary>
-		public BundleInfo GetBundleInfo()
-		{
-			return _bundleInfo;
-		}
-
-		/// <summary>
-		/// 检测下载器是否已经完成（无论成功或失败）
-		/// </summary>
-		public bool IsDone()
-		{
-			return _steps == ESteps.Succeed || _steps == ESteps.Failed;
-		}
-
-		/// <summary>
-		/// 下载过程是否发生错误
-		/// </summary>
-		public bool HasError()
-		{
-			return _steps == ESteps.Failed;
-		}
-
-		/// <summary>
-		/// 报告错误信息
-		/// </summary>
-		public void ReportError()
-		{
-			YooLogger.Error(_downloadError);
-		}
-
-
-		#region 多线程下载
-		public const int BufferSize = 1042 * 4;
-		private void ThreadRun()
-		{
-			string url = GetRequestURL();
-			string savePath = _bundleInfo.LocalPath;
-			long fileTotalSize = _bundleInfo.SizeBytes;
-			
-			FileStream fileStream = null;
-			Stream webStream = null;
-			HttpWebResponse fileResponse = null;
-
-			try
-			{
-				// 创建文件流
-				fileStream = new FileStream(savePath, FileMode.OpenOrCreate, FileAccess.Write);
-				long fileLength = fileStream.Length;
-
-				// 创建HTTP下载请求
-				HttpWebRequest fileRequest = WebRequest.Create(url) as HttpWebRequest;
-				fileRequest.Timeout = _timeout;
-				fileRequest.ReadWriteTimeout = _timeout;
-				fileRequest.ProtocolVersion = HttpVersion.Version10;
-				if (fileLength > 0)
-				{
-					// 注意：设置远端请求文件的起始位置
-					fileRequest.AddRange(fileLength);
-					// 注意：设置本地文件流的起始位置
-					fileStream.Seek(fileLength, SeekOrigin.Begin);
-				}
-
-				// 读取下载数据并保存到文件
-				fileResponse = fileRequest.GetResponse() as HttpWebResponse;
-				webStream = fileResponse.GetResponseStream();
-				byte[] buffer = new byte[BufferSize];
-				while (true)
-				{
-					int length = webStream.Read(buffer, 0, buffer.Length);
-					if (length <= 0)
-						break;
-
-					fileStream.Write(buffer, 0, length);
-
-					// 计算下载进度
-					// 注意：原子操作保证数据安全
-					fileLength += length;
-					float progress = (fileLength / fileTotalSize) * 100f;
-					_downloadProgress = progress;
-					_downloadBytes = fileLength;
-				}
-
-				// 验证下载文件完整性
-				bool verfiyResult = DownloadSystem.CheckContentIntegrity(savePath, _bundleInfo.SizeBytes, _bundleInfo.CRC);
-				if(verfiyResult)
-				{
-					_threadResult = true;
-				}
-				else
-				{
-					_threadResult = false;
-					_threadError = $"Verify file content failed : {_bundleInfo.Hash}";
-				}
-			}
-			catch (Exception e)
-			{
-				_threadResult = false;
-				_threadError = e.Message;
-			}
-			finally
-			{
-				if (webStream != null)
-				{
-					webStream.Close();
-					webStream.Dispose();
-				}
-
-				if (fileResponse != null)
-				{
-					fileResponse.Close();
-				}
-
-				if (fileStream != null)
-				{
-					fileStream.Close();
-					fileStream.Dispose();
-				}
-
-				_threadOver = true;
-			}
-		}
-		private string GetRequestURL()
-		{
-			// 轮流返回请求地址
-			_requestCount++;
-			if (_requestCount % 2 == 0)
-				return _bundleInfo.RemoteFallbackURL;
-			else
-				return _bundleInfo.RemoteMainURL;
-		}
-		#endregion
-	}
-}