refactor : 重构了Web文件系统公共类

方便小游戏共用基础代码。

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadPackageManifestOperation.cs

@@ -14,8 +14,8 @@ namespace YooAsset
         private readonly DefaultWebRemoteFileSystem _fileSystem;
         private readonly string _packageVersion;
         private readonly int _timeout;
-        private RequestWebRemotePackageHashOperation _requestWebPackageHashOp;
+        private RequestWebPackageHashOperation _requestWebPackageHashOp;
-        private LoadWebRemotePackageManifestOperation _loadWebPackageManifestOp;
+        private LoadWebPackageManifestOperation _loadWebPackageManifestOp;
         private ESteps _steps = ESteps.None;
 
 
@@ -38,7 +38,7 @@ namespace YooAsset
             {
                 if (_requestWebPackageHashOp == null)
                 {
-                    _requestWebPackageHashOp = new RequestWebRemotePackageHashOperation(_fileSystem, _packageVersion, _timeout);
+                    _requestWebPackageHashOp = new RequestWebPackageHashOperation(_fileSystem.RemoteServices, _fileSystem.PackageName, _packageVersion, _timeout);
                     _requestWebPackageHashOp.StartOperation();
                     AddChildOperation(_requestWebPackageHashOp);
                 }
@@ -64,7 +64,10 @@ namespace YooAsset
                 if (_loadWebPackageManifestOp == null)
                 {
                     string packageHash = _requestWebPackageHashOp.PackageHash;
-                    _loadWebPackageManifestOp = new LoadWebRemotePackageManifestOperation(_fileSystem, _packageVersion, packageHash, _timeout);
+                    string packageName = _fileSystem.PackageName;
+                    var manifestServices = _fileSystem.ManifestServices;
+                    var remoteServices = _fileSystem.RemoteServices;
+                    _loadWebPackageManifestOp = new LoadWebPackageManifestOperation(manifestServices, remoteServices, packageName, _packageVersion, packageHash, _timeout);
                     _loadWebPackageManifestOp.StartOperation();
                     AddChildOperation(_loadWebPackageManifestOp);
                 }

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSRequestPackageVersionOperation.cs

@@ -13,7 +13,7 @@ namespace YooAsset
         private readonly DefaultWebRemoteFileSystem _fileSystem;
         private readonly bool _appendTimeTicks;
         private readonly int _timeout;
-        private RequestWebRemotePackageVersionOperation _requestWebPackageVersionOp;
+        private RequestWebPackageVersionOperation _requestWebPackageVersionOp;
         private ESteps _steps = ESteps.None;
 
 
@@ -36,7 +36,7 @@ namespace YooAsset
             {
                 if (_requestWebPackageVersionOp == null)
                 {
-                    _requestWebPackageVersionOp = new RequestWebRemotePackageVersionOperation(_fileSystem, _appendTimeTicks, _timeout);
+                    _requestWebPackageVersionOp = new RequestWebPackageVersionOperation(_fileSystem.RemoteServices, _fileSystem.PackageName, _appendTimeTicks, _timeout);
                     _requestWebPackageVersionOp.StartOperation();
                     AddChildOperation(_requestWebPackageVersionOp);
                 }

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/LoadWebRemotePackageManifestOperation.cs

@@ -1,131 +0,0 @@
-
-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 readonly int _timeout;
-        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, int timeout)
-        {
-            _fileSystem = fileSystem;
-            _packageVersion = packageVersion;
-            _packageHash = packageHash;
-            _timeout = timeout;
-        }
-        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, _timeout);
-                    _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(_fileSystem.ManifestServices, _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);
-        }
-    }
-}

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageHashOperation.cs

@@ -1,92 +0,0 @@
-
-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);
-        }
-    }
-}

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageVersionOperation.cs

@@ -1,100 +0,0 @@
-
-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;
-        }
-    }
-}

Assets/YooAsset/Runtime/FileSystem/WebGame.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 9be3163f53935514d9e64e09686db957
+guid: 1ca8ffceab2965e4c8892f62efa86e90
 folderAsset: yes
 DefaultImporter:
   externalObjects: {}

Assets/YooAsset/Runtime/FileSystem/WebGame/Operation.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 97923f5987c469a4898718033af09e99
+guid: 10a171d1f549765498fc478ac208cfe5
 folderAsset: yes
 DefaultImporter:
   externalObjects: {}

Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/LoadWebPackageManifestOperation.cs

@@ -0,0 +1,135 @@
+using YooAsset;
+
+internal class LoadWebPackageManifestOperation : AsyncOperationBase
+{
+    private enum ESteps
+    {
+        None,
+        RequestFileData,
+        VerifyFileData,
+        LoadManifest,
+        Done,
+    }
+
+    private readonly IManifestRestoreServices _manifestServices;
+    private readonly IRemoteServices _remoteServices;
+    private readonly string _packageName;
+    private readonly string _packageVersion;
+    private readonly string _packageHash;
+    private readonly int _timeout;
+    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 LoadWebPackageManifestOperation(IManifestRestoreServices manifestServices, IRemoteServices remoteServices,
+        string packageName, string packageVersion, string packageHash, int timeout)
+    {
+        _manifestServices = manifestServices;
+        _remoteServices = remoteServices;
+        _packageName = packageName;
+        _packageVersion = packageVersion;
+        _packageHash = packageHash;
+        _timeout = timeout;
+    }
+    internal override void InternalStart()
+    {
+        _requestCount = WebRequestCounter.GetRequestFailedCount(_packageName, nameof(LoadWebPackageManifestOperation));
+        _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(_packageName, _packageVersion);
+                string url = GetRequestURL(fileName);
+                _webDataRequestOp = new UnityWebDataRequestOperation(url, _timeout);
+                _webDataRequestOp.StartOperation();
+                AddChildOperation(_webDataRequestOp);
+            }
+
+            _webDataRequestOp.UpdateOperation();
+            Progress = _webDataRequestOp.Progress;
+            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(_packageName, nameof(LoadWebPackageManifestOperation));
+            }
+        }
+
+        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 package manifest file!";
+            }
+        }
+
+        if (_steps == ESteps.LoadManifest)
+        {
+            if (_deserializer == null)
+            {
+                _deserializer = new DeserializeManifestOperation(_manifestServices, _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 GetRequestURL(string fileName)
+    {
+        // 轮流返回请求地址
+        if (_requestCount % 2 == 0)
+            return _remoteServices.GetRemoteMainURL(fileName);
+        else
+            return _remoteServices.GetRemoteFallbackURL(fileName);
+    }
+}

Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/LoadWebPackageManifestOperation.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: f2a5bb0106a45e540a43a05b72a75bcd
+guid: eb2ed9a86dbe88c42a3715b90df0e266
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/RequestWebPackageHashOperation.cs

@@ -0,0 +1,92 @@
+using YooAsset;
+
+internal class RequestWebPackageHashOperation : AsyncOperationBase
+{
+    private enum ESteps
+    {
+        None,
+        RequestPackageHash,
+        Done,
+    }
+
+    private readonly IRemoteServices _remoteServices;
+    private readonly string _packageName;
+    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 RequestWebPackageHashOperation(IRemoteServices remoteServices, string packageName, string packageVersion, int timeout)
+    {
+        _remoteServices = remoteServices;
+        _packageName = packageName;
+        _packageVersion = packageVersion;
+        _timeout = timeout;
+    }
+    internal override void InternalStart()
+    {
+        _requestCount = WebRequestCounter.GetRequestFailedCount(_packageName, nameof(RequestWebPackageHashOperation));
+        _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(_packageName, _packageVersion);
+                string url = GetRequestURL(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 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(_packageName, nameof(RequestWebPackageHashOperation));
+            }
+        }
+    }
+
+    private string GetRequestURL(string fileName)
+    {
+        // 轮流返回请求地址
+        if (_requestCount % 2 == 0)
+            return _remoteServices.GetRemoteMainURL(fileName);
+        else
+            return _remoteServices.GetRemoteFallbackURL(fileName);
+    }
+}

Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/RequestWebPackageHashOperation.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 8ac57bde14f2e1a4e9323751a7157ed7
+guid: 9c7603967834be04e9307b6d4eec2666
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/RequestWebPackageVersionOperation.cs

@@ -0,0 +1,100 @@
+using YooAsset;
+
+internal class RequestWebPackageVersionOperation : AsyncOperationBase
+{
+    private enum ESteps
+    {
+        None,
+        RequestPackageVersion,
+        Done,
+    }
+
+    private readonly IRemoteServices _remoteServices;
+    private readonly string _packageName;
+    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; }
+
+
+    public RequestWebPackageVersionOperation(IRemoteServices remoteServices, string packageName, bool appendTimeTicks, int timeout)
+    {
+        _remoteServices = remoteServices;
+        _packageName = packageName;
+        _appendTimeTicks = appendTimeTicks;
+        _timeout = timeout;
+    }
+    internal override void InternalStart()
+    {
+        _requestCount = WebRequestCounter.GetRequestFailedCount(_packageName, nameof(RequestWebPackageVersionOperation));
+        _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(_packageName);
+                string url = GetRequestURL(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 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(_packageName, nameof(RequestWebPackageVersionOperation));
+            }
+        }
+    }
+
+    private string GetRequestURL(string fileName)
+    {
+        string url;
+
+        // 轮流返回请求地址
+        if (_requestCount % 2 == 0)
+            url = _remoteServices.GetRemoteMainURL(fileName);
+        else
+            url = _remoteServices.GetRemoteFallbackURL(fileName);
+
+        // 在URL末尾添加时间戳
+        if (_appendTimeTicks)
+            return $"{url}?{System.DateTime.UtcNow.Ticks}";
+        else
+            return url;
+    }
+}

Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/RequestWebPackageVersionOperation.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 9a38597f546a46a429b24abd595c76e4
+guid: ae045c2050b3e8a4d91fb0585bdfb2c0
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2