TE6 打飞机Demo

TE6 打飞机Demo

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/DefaultWebRemoteFileSystem.cs

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+using System;
+using System.IO;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace YooAsset
+{
+    /// <summary>
+    /// Web文件系统
+    /// </summary>
+    internal class DefaultWebRemoteFileSystem : IFileSystem
+    {
+        /// <summary>
+        /// 包裹名称
+        /// </summary>
+        public string PackageName { private set; get; }
+
+        /// <summary>
+        /// 文件根目录
+        /// </summary>
+        public string FileRoot
+        {
+            get
+            {
+                return string.Empty;
+            }
+        }
+
+        /// <summary>
+        /// 文件数量
+        /// </summary>
+        public int FileCount
+        {
+            get
+            {
+                return 0;
+            }
+        }
+
+        #region 自定义参数
+        /// <summary>
+        /// 禁用Unity的网络缓存
+        /// </summary>
+        public bool DisableUnityWebCache { private set; get; } = false;
+
+        /// <summary>
+        /// 自定义参数：跨域下载服务接口
+        /// </summary>
+        public IRemoteServices RemoteServices { private set; get; } = null;
+
+        /// <summary>
+        ///  自定义参数：解密方法类
+        /// </summary>
+        public IWebDecryptionServices DecryptionServices { private set; get; }
+        #endregion
+
+
+        public DefaultWebRemoteFileSystem()
+        {
+        }
+        public virtual FSInitializeFileSystemOperation InitializeFileSystemAsync()
+        {
+            var operation = new DWRFSInitializeOperation(this);
+            return operation;
+        }
+        public virtual FSLoadPackageManifestOperation LoadPackageManifestAsync(string packageVersion, int timeout)
+        {
+            var operation = new DWRFSLoadPackageManifestOperation(this, packageVersion, timeout);
+            return operation;
+        }
+        public virtual FSRequestPackageVersionOperation RequestPackageVersionAsync(bool appendTimeTicks, int timeout)
+        {
+            var operation = new DWRFSRequestPackageVersionOperation(this, appendTimeTicks, timeout);
+            return operation;
+        }
+        public virtual FSClearCacheFilesOperation ClearCacheFilesAsync(PackageManifest manifest, ClearCacheFilesOptions options)
+        {
+            var operation = new FSClearCacheFilesCompleteOperation();
+            return operation;
+        }
+        public virtual FSDownloadFileOperation DownloadFileAsync(PackageBundle bundle, DownloadFileOptions options)
+        {
+            throw new System.NotImplementedException();
+        }
+        public virtual FSLoadBundleOperation LoadBundleFile(PackageBundle bundle)
+        {
+            if (bundle.BundleType == (int)EBuildBundleType.AssetBundle)
+            {
+                var operation = new DWRFSLoadAssetBundleOperation(this, bundle);
+                return operation;
+            }
+            else
+            {
+                string error = $"{nameof(DefaultWebRemoteFileSystem)} not support load bundle type : {bundle.BundleType}";
+                var operation = new FSLoadBundleCompleteOperation(error);
+                return operation;
+            }
+        }
+
+        public virtual void SetParameter(string name, object value)
+        {
+            if (name == FileSystemParametersDefine.DISABLE_UNITY_WEB_CACHE)
+            {
+                DisableUnityWebCache = Convert.ToBoolean(value);
+            }
+            else if (name == FileSystemParametersDefine.REMOTE_SERVICES)
+            {
+                RemoteServices = (IRemoteServices)value;
+            }
+            else if (name == FileSystemParametersDefine.DECRYPTION_SERVICES)
+            {
+                DecryptionServices = (IWebDecryptionServices)value;
+            }
+            else
+            {
+                YooLogger.Warning($"Invalid parameter : {name}");
+            }
+        }
+        public virtual void OnCreate(string packageName, string packageRoot)
+        {
+            PackageName = packageName;
+        }
+        public virtual void OnDestroy()
+        {
+        }
+
+        public virtual bool Belong(PackageBundle bundle)
+        {
+            return true;
+        }
+        public virtual bool Exists(PackageBundle bundle)
+        {
+            return true;
+        }
+        public virtual bool NeedDownload(PackageBundle bundle)
+        {
+            return false;
+        }
+        public virtual bool NeedUnpack(PackageBundle bundle)
+        {
+            return false;
+        }
+        public virtual bool NeedImport(PackageBundle bundle)
+        {
+            return false;
+        }
+
+        public virtual string GetBundleFilePath(PackageBundle bundle)
+        {
+            throw new System.NotImplementedException();
+        }
+        public virtual byte[] ReadBundleFileData(PackageBundle bundle)
+        {
+            throw new System.NotImplementedException();
+        }
+        public virtual string ReadBundleFileText(PackageBundle bundle)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        #region 内部方法
+        #endregion
+    }
+}

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/DefaultWebRemoteFileSystem.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: f511714bfc7c1104aa6200ee0826e9e3
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 1086ea45b8b84fe43ba1ef69b4f813dc
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSInitializeOperation.cs

@@ -0,0 +1,20 @@
+
+namespace YooAsset
+{
+    internal class DWRFSInitializeOperation : FSInitializeFileSystemOperation
+    {
+        private readonly DefaultWebRemoteFileSystem _fileSystem;
+
+        public DWRFSInitializeOperation(DefaultWebRemoteFileSystem fileSystem)
+        {
+            _fileSystem = fileSystem;
+        }
+        internal override void InternalStart()
+        {
+            Status = EOperationStatus.Succeed;
+        }
+        internal override void InternalUpdate()
+        {
+        }
+    }
+}

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSInitializeOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: f30b92e4f3b9e594ca0481128b56cc21
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadBundleOperation.cs

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+
+namespace YooAsset
+{
+    internal class DWRFSLoadAssetBundleOperation : FSLoadBundleOperation
+    {
+        private enum ESteps
+        {
+            None,
+            DownloadAssetBundle,
+            Done,
+        }
+
+        private readonly DefaultWebRemoteFileSystem _fileSystem;
+        private readonly PackageBundle _bundle;
+        private DownloadAssetBundleOperation _downloadAssetBundleOp;
+        private ESteps _steps = ESteps.None;
+
+
+        internal DWRFSLoadAssetBundleOperation(DefaultWebRemoteFileSystem fileSystem, PackageBundle bundle)
+        {
+            _fileSystem = fileSystem;
+            _bundle = bundle;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.DownloadAssetBundle;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.DownloadAssetBundle)
+            {
+                if (_downloadAssetBundleOp == null)
+                {
+                    DownloadFileOptions options = new DownloadFileOptions(int.MaxValue, 60);
+                    options.MainURL = _fileSystem.RemoteServices.GetRemoteMainURL(_bundle.FileName);
+                    options.FallbackURL = _fileSystem.RemoteServices.GetRemoteFallbackURL(_bundle.FileName);
+
+                    if (_bundle.Encrypted)
+                    {
+                        _downloadAssetBundleOp = new DownloadWebEncryptAssetBundleOperation(true, _fileSystem.DecryptionServices, _bundle, options);
+                        _downloadAssetBundleOp.StartOperation();
+                        AddChildOperation(_downloadAssetBundleOp);
+                    }
+                    else
+                    {
+                        _downloadAssetBundleOp = new DownloadWebNormalAssetBundleOperation(_fileSystem.DisableUnityWebCache, _bundle, options);
+                        _downloadAssetBundleOp.StartOperation();
+                        AddChildOperation(_downloadAssetBundleOp);
+                    }
+                }
+
+                _downloadAssetBundleOp.UpdateOperation();
+                DownloadProgress = _downloadAssetBundleOp.DownloadProgress;
+                DownloadedBytes = _downloadAssetBundleOp.DownloadedBytes;
+                Progress = _downloadAssetBundleOp.Progress;
+                if (_downloadAssetBundleOp.IsDone == false)
+                    return;
+
+                if (_downloadAssetBundleOp.Status == EOperationStatus.Succeed)
+                {
+                    var assetBundle = _downloadAssetBundleOp.Result;
+                    if (assetBundle == null)
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"{nameof(DownloadAssetBundleOperation)} loaded asset bundle is null !";
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Result = new AssetBundleResult(_fileSystem, _bundle, assetBundle, null);
+                        Status = EOperationStatus.Succeed;
+                    }
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _downloadAssetBundleOp.Error;
+                }
+            }
+        }
+        internal override void InternalWaitForAsyncComplete()
+        {
+            if (_steps != ESteps.Done)
+            {
+                _steps = ESteps.Done;
+                Status = EOperationStatus.Failed;
+                Error = "WebGL platform not support sync load method !";
+                UnityEngine.Debug.LogError(Error);
+            }
+        }
+    }
+}

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadBundleOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 270b776fd379b0f45bc602c845720733
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadPackageManifestOperation.cs

@@ -0,0 +1,92 @@
+
+namespace YooAsset
+{
+    internal class DWRFSLoadPackageManifestOperation : FSLoadPackageManifestOperation
+    {
+        private enum ESteps
+        {
+            None,
+            RequestWebPackageHash,
+            LoadWebPackageManifest,
+            Done,
+        }
+
+        private readonly DefaultWebRemoteFileSystem _fileSystem;
+        private readonly string _packageVersion;
+        private readonly int _timeout;
+        private RequestWebRemotePackageHashOperation _requestWebPackageHashOp;
+        private LoadWebRemotePackageManifestOperation _loadWebPackageManifestOp;
+        private ESteps _steps = ESteps.None;
+
+
+        public DWRFSLoadPackageManifestOperation(DefaultWebRemoteFileSystem fileSystem, string packageVersion, int timeout)
+        {
+            _fileSystem = fileSystem;
+            _packageVersion = packageVersion;
+            _timeout = timeout;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.RequestWebPackageHash;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.RequestWebPackageHash)
+            {
+                if (_requestWebPackageHashOp == null)
+                {
+                    _requestWebPackageHashOp = new RequestWebRemotePackageHashOperation(_fileSystem, _packageVersion, _timeout);
+                    _requestWebPackageHashOp.StartOperation();
+                    AddChildOperation(_requestWebPackageHashOp);
+                }
+
+                _requestWebPackageHashOp.UpdateOperation();
+                if (_requestWebPackageHashOp.IsDone == false)
+                    return;
+
+                if (_requestWebPackageHashOp.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.LoadWebPackageManifest;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _requestWebPackageHashOp.Error;
+                }
+            }
+
+            if (_steps == ESteps.LoadWebPackageManifest)
+            {
+                if (_loadWebPackageManifestOp == null)
+                {
+                    string packageHash = _requestWebPackageHashOp.PackageHash;
+                    _loadWebPackageManifestOp = new LoadWebRemotePackageManifestOperation(_fileSystem, _packageVersion, packageHash);
+                    _loadWebPackageManifestOp.StartOperation();
+                    AddChildOperation(_loadWebPackageManifestOp);
+                }
+
+                _loadWebPackageManifestOp.UpdateOperation();
+                Progress = _loadWebPackageManifestOp.Progress;
+                if (_loadWebPackageManifestOp.IsDone == false)
+                    return;
+
+                if (_loadWebPackageManifestOp.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.Done;
+                    Manifest = _loadWebPackageManifestOp.Manifest;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _loadWebPackageManifestOp.Error;
+                }
+            }
+        }
+    }
+}

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadPackageManifestOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 2611f6fbc97de1a4d9a38116045d4faf
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSRequestPackageVersionOperation.cs

@@ -0,0 +1,64 @@
+
+namespace YooAsset
+{
+    internal class DWRFSRequestPackageVersionOperation : FSRequestPackageVersionOperation
+    {
+        private enum ESteps
+        {
+            None,
+            RequestPackageVersion,
+            Done,
+        }
+
+        private readonly DefaultWebRemoteFileSystem _fileSystem;
+        private readonly bool _appendTimeTicks;
+        private readonly int _timeout;
+        private RequestWebRemotePackageVersionOperation _requestWebPackageVersionOp;
+        private ESteps _steps = ESteps.None;
+
+
+        internal DWRFSRequestPackageVersionOperation(DefaultWebRemoteFileSystem fileSystem, bool appendTimeTicks, int timeout)
+        {
+            _fileSystem = fileSystem;
+            _appendTimeTicks = appendTimeTicks;
+            _timeout = timeout;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.RequestPackageVersion;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.RequestPackageVersion)
+            {
+                if (_requestWebPackageVersionOp == null)
+                {
+                    _requestWebPackageVersionOp = new RequestWebRemotePackageVersionOperation(_fileSystem, _appendTimeTicks, _timeout);
+                    _requestWebPackageVersionOp.StartOperation();
+                    AddChildOperation(_requestWebPackageVersionOp);
+                }
+
+                _requestWebPackageVersionOp.UpdateOperation();
+                Progress = _requestWebPackageVersionOp.Progress;
+                if (_requestWebPackageVersionOp.IsDone == false)
+                    return;
+
+                if (_requestWebPackageVersionOp.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.Done;
+                    PackageVersion = _requestWebPackageVersionOp.PackageVersion;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _requestWebPackageVersionOp.Error;
+                }
+            }
+        }
+    }
+}

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSRequestPackageVersionOperation.cs.meta

@@ -0,0 +1,11 @@
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+guid: d1c5335974b2432458ed902e20cc954e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 9be3163f53935514d9e64e09686db957
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/LoadWebRemotePackageManifestOperation.cs

@@ -0,0 +1,129 @@
+
+namespace YooAsset
+{
+    internal class LoadWebRemotePackageManifestOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            RequestFileData,
+            VerifyFileData,
+            LoadManifest,
+            Done,
+        }
+
+        private readonly DefaultWebRemoteFileSystem _fileSystem;
+        private readonly string _packageVersion;
+        private readonly string _packageHash;
+        private UnityWebDataRequestOperation _webDataRequestOp;
+        private DeserializeManifestOperation _deserializer;
+        private int _requestCount = 0;
+        private ESteps _steps = ESteps.None;
+
+        /// <summary>
+        /// 包裹清单
+        /// </summary>
+        public PackageManifest Manifest { private set; get; }
+
+
+        internal LoadWebRemotePackageManifestOperation(DefaultWebRemoteFileSystem fileSystem, string packageVersion, string packageHash)
+        {
+            _fileSystem = fileSystem;
+            _packageVersion = packageVersion;
+            _packageHash = packageHash;
+        }
+        internal override void InternalStart()
+        {
+            _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(LoadWebRemotePackageManifestOperation));
+            _steps = ESteps.RequestFileData;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.RequestFileData)
+            {
+                if (_webDataRequestOp == null)
+                {
+                    string fileName = YooAssetSettingsData.GetManifestBinaryFileName(_fileSystem.PackageName, _packageVersion);
+                    string url = GetWebRequestURL(fileName);
+                    _webDataRequestOp = new UnityWebDataRequestOperation(url);
+                    _webDataRequestOp.StartOperation();
+                    AddChildOperation(_webDataRequestOp);
+                }
+
+                _webDataRequestOp.UpdateOperation();
+                if (_webDataRequestOp.IsDone == false)
+                    return;
+
+                if (_webDataRequestOp.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.VerifyFileData;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _webDataRequestOp.Error;
+                    WebRequestCounter.RecordRequestFailed(_fileSystem.PackageName, nameof(LoadWebRemotePackageManifestOperation));
+                }
+            }
+
+            if (_steps == ESteps.VerifyFileData)
+            {
+                if (ManifestTools.VerifyManifestData(_webDataRequestOp.Result, _packageHash))
+                {
+                    _steps = ESteps.LoadManifest;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = "Failed to verify web remote package manifest file!";
+                }
+            }
+
+            if (_steps == ESteps.LoadManifest)
+            {
+                if (_deserializer == null)
+                {
+                    _deserializer = new DeserializeManifestOperation(_webDataRequestOp.Result);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
+                }
+
+                _deserializer.UpdateOperation();
+                Progress = _deserializer.Progress;
+                if (_deserializer.IsDone == false)
+                    return;
+
+                if (_deserializer.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.Done;
+                    Manifest = _deserializer.Manifest;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _deserializer.Error;
+                }
+            }
+        }
+        internal override string InternalGetDesc()
+        {
+            return $"PackageVersion : {_packageVersion} PackageHash : {_packageHash}";
+        }
+
+        private string GetWebRequestURL(string fileName)
+        {
+            // 轮流返回请求地址
+            if (_requestCount % 2 == 0)
+                return _fileSystem.RemoteServices.GetRemoteMainURL(fileName);
+            else
+                return _fileSystem.RemoteServices.GetRemoteFallbackURL(fileName);
+        }
+    }
+}

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/LoadWebRemotePackageManifestOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 8ac57bde14f2e1a4e9323751a7157ed7
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageHashOperation.cs

@@ -0,0 +1,92 @@
+
+namespace YooAsset
+{
+    internal class RequestWebRemotePackageHashOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            RequestPackageHash,
+            Done,
+        }
+
+        private readonly DefaultWebRemoteFileSystem _fileSystem;
+        private readonly string _packageVersion;
+        private readonly int _timeout;
+        private UnityWebTextRequestOperation _webTextRequestOp;
+        private int _requestCount = 0;
+        private ESteps _steps = ESteps.None;
+
+        /// <summary>
+        /// 包裹哈希值
+        /// </summary>
+        public string PackageHash { private set; get; }
+
+
+        public RequestWebRemotePackageHashOperation(DefaultWebRemoteFileSystem fileSystem, string packageVersion, int timeout)
+        {
+            _fileSystem = fileSystem;
+            _packageVersion = packageVersion;
+            _timeout = timeout;
+        }
+        internal override void InternalStart()
+        {
+            _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(RequestWebRemotePackageHashOperation));
+            _steps = ESteps.RequestPackageHash;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.RequestPackageHash)
+            {
+                if (_webTextRequestOp == null)
+                {
+                    string fileName = YooAssetSettingsData.GetPackageHashFileName(_fileSystem.PackageName, _packageVersion);
+                    string url = GetWebRequestURL(fileName);
+                    _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
+                }
+
+                _webTextRequestOp.UpdateOperation();
+                Progress = _webTextRequestOp.Progress;
+                if (_webTextRequestOp.IsDone == false)
+                    return;
+
+                if (_webTextRequestOp.Status == EOperationStatus.Succeed)
+                {
+                    PackageHash = _webTextRequestOp.Result;
+                    if (string.IsNullOrEmpty(PackageHash))
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"Web remote package hash file content is empty !";
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Succeed;
+                    }
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _webTextRequestOp.Error;
+                    WebRequestCounter.RecordRequestFailed(_fileSystem.PackageName, nameof(RequestWebRemotePackageHashOperation));
+                }
+            }
+        }
+
+        private string GetWebRequestURL(string fileName)
+        {
+            // 轮流返回请求地址
+            if (_requestCount % 2 == 0)
+                return _fileSystem.RemoteServices.GetRemoteMainURL(fileName);
+            else
+                return _fileSystem.RemoteServices.GetRemoteFallbackURL(fileName);
+        }
+    }
+}

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageHashOperation.cs.meta

@@ -0,0 +1,11 @@
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+guid: f2a5bb0106a45e540a43a05b72a75bcd
+MonoImporter:
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+  serializedVersion: 2
+  defaultReferences: []
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UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageVersionOperation.cs

@@ -0,0 +1,100 @@
+
+namespace YooAsset
+{
+    internal class RequestWebRemotePackageVersionOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            RequestPackageVersion,
+            Done,
+        }
+
+        private readonly DefaultWebRemoteFileSystem _fileSystem;
+        private readonly bool _appendTimeTicks;
+        private readonly int _timeout;
+        private UnityWebTextRequestOperation _webTextRequestOp;
+        private int _requestCount = 0;
+        private ESteps _steps = ESteps.None;
+
+        /// <summary>
+        /// 包裹版本
+        /// </summary>
+        public string PackageVersion { private set; get; }
+
+
+        internal RequestWebRemotePackageVersionOperation(DefaultWebRemoteFileSystem fileSystem, bool appendTimeTicks, int timeout)
+        {
+            _fileSystem = fileSystem;
+            _appendTimeTicks = appendTimeTicks;
+            _timeout = timeout;
+        }
+        internal override void InternalStart()
+        {
+            _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(RequestWebRemotePackageVersionOperation));
+            _steps = ESteps.RequestPackageVersion;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.RequestPackageVersion)
+            {
+                if (_webTextRequestOp == null)
+                {
+                    string fileName = YooAssetSettingsData.GetPackageVersionFileName(_fileSystem.PackageName);
+                    string url = GetWebRequestURL(fileName);
+                    _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
+                }
+
+                _webTextRequestOp.UpdateOperation();
+                Progress = _webTextRequestOp.Progress;
+                if (_webTextRequestOp.IsDone == false)
+                    return;
+
+                if (_webTextRequestOp.Status == EOperationStatus.Succeed)
+                {
+                    PackageVersion = _webTextRequestOp.Result;
+                    if (string.IsNullOrEmpty(PackageVersion))
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"Web remote package version file content is empty !";
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Succeed;
+                    }
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _webTextRequestOp.Error;
+                    WebRequestCounter.RecordRequestFailed(_fileSystem.PackageName, nameof(RequestWebRemotePackageVersionOperation));
+                }
+            }
+        }
+
+        private string GetWebRequestURL(string fileName)
+        {
+            string url;
+
+            // 轮流返回请求地址
+            if (_requestCount % 2 == 0)
+                url = _fileSystem.RemoteServices.GetRemoteMainURL(fileName);
+            else
+                url = _fileSystem.RemoteServices.GetRemoteFallbackURL(fileName);
+
+            // 在URL末尾添加时间戳
+            if (_appendTimeTicks)
+                return $"{url}?{System.DateTime.UtcNow.Ticks}";
+            else
+                return url;
+        }
+    }
+}

UnityProject/Packages/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageVersionOperation.cs.meta

@@ -0,0 +1,11 @@
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