From cc086832649f2212c45716f0d111f4238e69aa6c Mon Sep 17 00:00:00 2001
From: UnknownShadow200 <unknownshadow200@gmail.com>
Date: Thu, 8 Feb 2018 15:45:47 +1100
Subject: [PATCH] Fix launcher crashing on recent mono (Thanks Odd0002)

---
 ClassicalSharp/Network/Utils/AsyncDownloader.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ClassicalSharp/Network/Utils/AsyncDownloader.cs b/ClassicalSharp/Network/Utils/AsyncDownloader.cs
index 74d92cc13..ebfeae62d 100644
--- a/ClassicalSharp/Network/Utils/AsyncDownloader.cs
+++ b/ClassicalSharp/Network/Utils/AsyncDownloader.cs
@@ -227,8 +227,8 @@ namespace ClassicalSharp.Network {
 			try {
 				HttpWebRequest req = MakeRequest(request);
 				using (HttpWebResponse response = (HttpWebResponse)req.GetResponse()) {
-					request.ETag = response.Headers[HttpResponseHeader.ETag];
-					if (response.Headers[HttpResponseHeader.LastModified] != null) {
+					request.ETag = response.Headers.Get("ETag");
+					if (response.Headers.Get("Last-Modified") != null) {
 						request.LastModified = response.LastModified;					
 					}
 					request.Data = DownloadContent(request, response);