From 2e2b53f8a1a3ee4839c7d1d18be8fa8b0269139f Mon Sep 17 00:00:00 2001
From: Alex Maitland <amaitland@users.noreply.github.com>
Date: Sat, 26 Aug 2023 07:46:25 +1000
Subject: [PATCH] Core - DownloadUrlAsync add optional UrlReqestFlags param

Discussion #4578
---
 CefSharp.Core/WebBrowserExtensionsEx.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/CefSharp.Core/WebBrowserExtensionsEx.cs b/CefSharp.Core/WebBrowserExtensionsEx.cs
index 537f7cba33..d6d770f189 100644
--- a/CefSharp.Core/WebBrowserExtensionsEx.cs
+++ b/CefSharp.Core/WebBrowserExtensionsEx.cs
@@ -99,9 +99,15 @@ public static void DownloadUrl(this IFrame frame, string url, Action<IUrlRequest
         /// </summary>
         /// <param name="frame">valid frame</param>
         /// <param name="url">url to download</param>
+        /// <param name="urlRequestFlags">control caching policy</param>
         /// <returns>A task that can be awaited to get the <see cref="T:byte[]"/> representing the Url</returns>
-        public static Task<byte[]> DownloadUrlAsync(this IFrame frame, string url)
+        public static Task<byte[]> DownloadUrlAsync(this IFrame frame, string url, UrlRequestFlags urlRequestFlags = UrlRequestFlags.None)
         {
+            if (frame == null)
+            {
+                throw new ArgumentNullException(nameof(frame));
+            }
+
             if (!frame.IsValid)
             {
                 throw new Exception("Frame is invalid, unable to continue.");
@@ -116,6 +122,7 @@ public static Task<byte[]> DownloadUrlAsync(this IFrame frame, string url)
 
                 request.Method = "GET";
                 request.Url = url;
+                request.Flags = urlRequestFlags;
 
                 var memoryStream = new MemoryStream();