add offline update server catch branch

See merge request ryubing/ryujinx!246

assets/Locales/RenderDoc.json

@@ -7,8 +7,8 @@
         "de_DE": "",
         "el_GR": "",
         "en_US": "Start RenderDoc Frame Capture",
-        "es_ES": "",
-        "fr_FR": "",
+        "es_ES": "Iniciar una captura de fotograma de RenderDoc",
+        "fr_FR": "Démarrer une capture de trame RenderDoc",
         "he_IL": "",
         "it_IT": "",
         "ja_JP": "",
@@ -32,8 +32,8 @@
         "de_DE": "",
         "el_GR": "",
         "en_US": "End RenderDoc Frame Capture",
-        "es_ES": "",
-        "fr_FR": "",
+        "es_ES": "Detener la captura de fotograma de RenderDoc",
+        "fr_FR": "Arrêter la capture de trame RenderDoc",
         "he_IL": "",
         "it_IT": "",
         "ja_JP": "",
@@ -57,8 +57,8 @@
         "de_DE": "",
         "el_GR": "",
         "en_US": "Discard RenderDoc Frame Capture",
-        "es_ES": "",
-        "fr_FR": "",
+        "es_ES": "Descartar la captura de fotograma de RenderDoc",
+        "fr_FR": "Supprimer la capture de trame RenderDoc",
         "he_IL": "",
         "it_IT": "",
         "ja_JP": "",
@@ -82,8 +82,8 @@
         "de_DE": "",
         "el_GR": "",
         "en_US": "Ends the currently active RenderDoc Frame Capture, immediately discarding its result.",
-        "es_ES": "",
-        "fr_FR": "",
+        "es_ES": "Finaliza la captura de fotograma de RenderDoc actualmente activa y descarta inmediatamente su resultado.",
+        "fr_FR": "Met fin à la capture de trame RenderDoc en cours, en supprimant immédiatement son résultat.",
         "he_IL": "",
         "it_IT": "",
         "ja_JP": "",

src/Ryujinx/Systems/Updater/Updater.GitLab.cs

@@ -7,6 +7,7 @@ using Ryujinx.Common.Logging;
 using Ryujinx.Systems.Update.Client;
 using Ryujinx.Systems.Update.Common;
 using System;
+using System.Net;
 using System.Net.Http;
 using System.Threading.Tasks;
 
@@ -46,6 +47,12 @@ namespace Ryujinx.Ava.Systems
                 return Return<VersionResponse>.Failure(
                     new MessageError("DNS resolution error occurred. Is your internet down?"));
             }
+            catch (HttpRequestException hre)
+                when (hre.StatusCode is HttpStatusCode.BadGateway)
+            {
+                return Return<VersionResponse>.Failure(
+                    new MessageError("Could not connect to the update server, but it appears like you have internet. It seems like the update server is offline, try again later."));
+            }
         }
 
         public static async Task<Optional<(Version Current, Version Incoming)>> CheckVersionAsync(bool showVersionUpToDate = false)