【m】框架大更新

Assets/03.YooAsset/Runtime/DownloadSystem/Operation/Internal/UnityWebRequestOperation.cs

@@ -0,0 +1,98 @@
+using System;
+using UnityEngine.Networking;
+using UnityEngine;
+
+namespace YooAsset
+{
+    internal abstract class UnityWebRequestOperation : AsyncOperationBase
+    {
+        protected UnityWebRequest _webRequest;
+        protected readonly string _requestURL;
+        private bool _isAbort = false;
+
+        /// <summary>
+        /// HTTP返回码
+        /// </summary>
+        public long HttpCode { private set; get; }
+
+        /// <summary>
+        /// 当前下载的字节数
+        /// </summary>
+        public long DownloadedBytes { protected set; get; }
+
+        /// <summary>
+        /// 当前下载进度（0f - 1f）
+        /// </summary>
+        public float DownloadProgress { protected set; get; }
+
+        /// <summary>
+        /// 请求的URL地址
+        /// </summary>
+        public string URL
+        {
+            get { return _requestURL; }
+        }
+
+        internal UnityWebRequestOperation(string url)
+        {
+            _requestURL = url;
+        }
+        internal override void InternalAbort()
+        {
+            //TODO
+            // 1. 编辑器下停止运行游戏的时候主动终止下载任务
+            // 2. 真机上销毁包裹的时候主动终止下载任务
+            if (_isAbort == false)
+            {
+                if (_webRequest != null)
+                {
+                    _webRequest.Abort();
+                    _isAbort = true;
+                }
+            }
+        }
+
+        /// <summary>
+        /// 释放下载器
+        /// </summary>
+        protected void DisposeRequest()
+        {
+            if (_webRequest != null)
+            {
+                //注意：引擎底层会自动调用Abort方法
+                _webRequest.Dispose();
+                _webRequest = null;
+            }
+        }
+
+        /// <summary>
+        /// 检测请求结果
+        /// </summary>
+        protected bool CheckRequestResult()
+        {
+            HttpCode = _webRequest.responseCode;
+
+#if UNITY_2020_3_OR_NEWER
+            if (_webRequest.result != UnityWebRequest.Result.Success)
+            {
+                Error = $"URL : {_requestURL} Error : {_webRequest.error}";
+                return false;
+            }
+            else
+            {
+                return true;
+            }
+#else
+            if (_webRequest.isNetworkError || _webRequest.isHttpError)
+            {
+                Error = $"URL : {_requestURL} Error : {_webRequest.error}";
+                return false;
+            }
+            else
+            {
+                return true;
+            }
+#endif
+        }
+    }
+}