Attempt at dealing with bad CDNs that disconnect during DL

Author: Marlamin

TACTSharp/CDN.cs

@@ -111,7 +111,7 @@ private void LoadCASCIndices()
                 var dataDir = Path.Combine(Settings.BaseDir, "Data", "data");
                 if (Directory.Exists(dataDir))
                 {
-                    if(CASCIndexInstances.Count > 0)
+                    if (CASCIndexInstances.Count > 0)
                         return;
 
                     var indexFiles = Directory.GetFiles(dataDir, "*.idx");
@@ -205,9 +205,18 @@ public async Task<string> GetPatchServiceFile(string product, string file = "ver
                 {
                     Directory.CreateDirectory(Path.GetDirectoryName(cachePath)!);
 
-                    using (var fileStream = new FileStream(cachePath, FileMode.Create, FileAccess.Write))
+                    try
+                    {
+                        using (var fileStream = new FileStream(cachePath, FileMode.Create, FileAccess.Write))
+                        {
+                            response.Content.ReadAsStream(token).CopyTo(fileStream);
+                        }
+                    }
+                    catch (Exception e)
                     {
-                        response.Content.ReadAsStream(token).CopyTo(fileStream);
+                        Console.WriteLine("Failed to download file: " + e.Message);
+                        File.Delete(cachePath);
+                        continue;
                     }
                 }
 
@@ -331,9 +340,18 @@ public unsafe bool TryGetLocalFile(string eKey, out ReadOnlySpan<byte> data)
                 {
                     Directory.CreateDirectory(Path.GetDirectoryName(cachePath)!);
 
-                    using (var fileStream = new FileStream(cachePath, FileMode.Create, FileAccess.Write))
+                    try
+                    {
+                        using (var fileStream = new FileStream(cachePath, FileMode.Create, FileAccess.Write))
+                        {
+                            response.Content.ReadAsStream(token).CopyTo(fileStream);
+                        }
+                    }
+                    catch (Exception e)
                     {
-                        response.Content.ReadAsStream(token).CopyTo(fileStream);
+                        Console.WriteLine("Failed to download file: " + e.Message);
+                        File.Delete(cachePath);
+                        continue;
                     }
                 }
 

TACTSharp/Config.cs

@@ -9,7 +9,11 @@ public Config(CDN cdn, string path, bool isFile)
         {
             if (!isFile)
             {
-                foreach (var line in Encoding.UTF8.GetString(cdn.GetFile("config", path)).Split('\n'))
+                var file = Encoding.UTF8.GetString(cdn.GetFile("config", path));
+                if (file[0] != '#')
+                    throw new IOException("Config file is unreadable");
+
+                foreach (var line in file.Split('\n'))
                 {
                     var splitLine = line.Split('=');
                     if (splitLine.Length > 1)
@@ -18,7 +22,11 @@ public Config(CDN cdn, string path, bool isFile)
             }
             else
             {
-                foreach (var line in File.ReadAllLines(path))
+                var file = File.ReadAllLines(path);
+                if (file[0][0] != '#')
+                    throw new IOException("Config file is unreadable");
+
+                foreach (var line in file)
                 {
                     var splitLine = line.Split('=');
                     if (splitLine.Length > 1)