optimization request http

System.Common.CoreLib/Net/Http/GeneralHttpClientFactory.cs

@@ -2,13 +2,16 @@
 
 namespace System.Net.Http
 {
-    public abstract class HttpService
+    /// <summary>
+    /// 通用 <see cref="HttpClient"/> 工厂
+    /// </summary>
+    public abstract class GeneralHttpClientFactory
     {
         protected readonly ILogger logger;
         protected readonly IHttpPlatformHelper http_helper;
         readonly IHttpClientFactory _clientFactory;
 
-        public HttpService(
+        public GeneralHttpClientFactory(
             ILogger logger,
             IHttpPlatformHelper http_helper,
             IHttpClientFactory clientFactory)

System.Common.CoreLib/Net/Http/HttpPlatformHelper.cs

@@ -1,4 +1,5 @@
 using System.IO;
+using System.IO.FileFormats;
 
 namespace System.Net.Http
 {
@@ -9,6 +10,17 @@ namespace System.Net.Http
 
         public virtual string UserAgent => DefaultUserAgent;
 
+        public virtual string AcceptImages => "image/png, image/*; q=0.8";
+
+        static readonly Lazy<ImageFormat[]> mSupportedImageFormats = new(() => new ImageFormat[]
+        {
+            ImageFormat.JPEG,
+            ImageFormat.PNG,
+            ImageFormat.GIF,
+        });
+
+        public virtual ImageFormat[] SupportedImageFormats => mSupportedImageFormats.Value;
+
         public (string filePath, string mime)? TryHandleUploadFile(Stream fileStream) => null;
     }
 }

System.Common.CoreLib/Net/Http/IHttpPlatformHelper.cs

@@ -1,4 +1,5 @@
 using System.IO;
+using System.IO.FileFormats;
 
 namespace System.Net.Http
 {
@@ -14,6 +15,9 @@ namespace System.Net.Http
         /// </summary>
         string UserAgent { get; }
 
+        string AcceptImages { get; }
+
+        ImageFormat[] SupportedImageFormats { get; }
         /// <summary>
         /// 尝试将需要上传的文件流[处理]后保存到临时路径中并返回信息
         /// <para>[处理]由客户端平台原生实现</para>