Retry http extension

src/Jackett/HttpClientExtensions.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Jackett
+{
+    public static class HttpClientExtensions
+    {
+        public static async Task<string> GetStringAsync(this HttpClient client, string uri, int retries)
+        {
+            Exception exception = null;
+            try
+            {
+                return await client.GetStringAsync(uri);
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+            }
+            if (retries > 0)
+                return await client.GetStringAsync(uri, --retries);
+            throw exception;
+        }
+    }
+}