proxy support. Merge PR: loic-sharma#744

Author: VAllens

src/BaGet.Core/Configuration/BaGetOptions.cs

@@ -54,4 +54,6 @@ public class BaGetOptions
     public SearchOptions Search { get; set; }
 
     public MirrorOptions Mirror { get; set; }
+
+    public ProxyOptions Proxy { get; set; }
 }

src/BaGet.Core/Configuration/ProxyOptions.cs

@@ -0,0 +1,8 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace BaGet.Core.Configuration;
+
+public class ProxyOptions
+{
+    public string Address { get; set; }
+}

src/BaGet.Core/Extensions/DependencyInjectionExtensions.cs

@@ -1,3 +1,5 @@
+using BaGet.Core.Configuration;
+
 namespace BaGet.Core;
 
 public static partial class DependencyInjectionExtensions
@@ -50,6 +52,7 @@ private static void AddConfiguration(this IServiceCollection services)
         services.AddBaGetOptions<DatabaseOptions>(nameof(BaGetOptions.Database));
         services.AddBaGetOptions<FileSystemStorageOptions>(nameof(BaGetOptions.Storage));
         services.AddBaGetOptions<MirrorOptions>(nameof(BaGetOptions.Mirror));
+        services.AddBaGetOptions<ProxyOptions>(nameof(BaGetOptions.Proxy));
         services.AddBaGetOptions<SearchOptions>(nameof(BaGetOptions.Search));
         services.AddBaGetOptions<StorageOptions>(nameof(BaGetOptions.Storage));
     }
@@ -159,10 +162,19 @@ private static HttpClient HttpClientFactory(IServiceProvider provider)
         var assemblyName = assembly.GetName().Name;
         var assemblyVersion = assembly.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion ?? "0.0.0";
 
-        var client = new HttpClient(new HttpClientHandler
+        var httpClientHandler = new HttpClientHandler
         {
             AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate,
-        });
+        };
+
+        var proxyOptions = provider.GetRequiredService<IOptions<ProxyOptions>>();
+
+        if (!string.IsNullOrEmpty(proxyOptions.Value.Address))
+        {
+            httpClientHandler.Proxy = new System.Net.WebProxy(proxyOptions.Value.Address);
+        }
+
+        var client = new HttpClient(httpClientHandler);
 
         client.DefaultRequestHeaders.Add("User-Agent", $"{assemblyName}/{assemblyVersion}");
         client.Timeout = TimeSpan.FromSeconds(options.PackageDownloadTimeoutSeconds);