Case-insensitive comparison of `public` branch

Fixes #429
Fixes #428

DepotDownloader/ContentDownloader.cs

@@ -21,7 +21,7 @@ namespace DepotDownloader
         public const uint INVALID_APP_ID = uint.MaxValue;
         public const uint INVALID_DEPOT_ID = uint.MaxValue;
         public const ulong INVALID_MANIFEST_ID = ulong.MaxValue;
-        public const string DEFAULT_BRANCH = "Public";
+        public const string DEFAULT_BRANCH = "public";
 
         public static DownloadConfig Config = new DownloadConfig();
 
@@ -243,7 +243,7 @@ namespace DepotDownloader
 
             var node = manifests[branch].Children.Count > 0 ? manifests[branch]["gid"] : manifests[branch];
 
-            if (branch != "Public" && node == KeyValue.Invalid)
+            if (node == KeyValue.Invalid && !string.Equals(branch, DEFAULT_BRANCH, StringComparison.OrdinalIgnoreCase))
             {
                 var node_encrypted = manifests_encrypted[branch];
                 if (node_encrypted != KeyValue.Invalid)
@@ -589,10 +589,10 @@ namespace DepotDownloader
             if (manifestId == INVALID_MANIFEST_ID)
             {
                 manifestId = GetSteam3DepotManifest(depotId, appId, branch);
-                if (manifestId == INVALID_MANIFEST_ID && branch != "public")
+                if (manifestId == INVALID_MANIFEST_ID && !string.Equals(branch, DEFAULT_BRANCH, StringComparison.OrdinalIgnoreCase))
                 {
-                    Console.WriteLine("Warning: Depot {0} does not have branch named \"{1}\". Trying public branch.", depotId, branch);
-                    branch = "public";
+                    Console.WriteLine("Warning: Depot {0} does not have branch named \"{1}\". Trying {2} branch.", depotId, branch, DEFAULT_BRANCH);
+                    branch = DEFAULT_BRANCH;
                     manifestId = GetSteam3DepotManifest(depotId, appId, branch);
                 }
 

DepotDownloader/Program.cs

@@ -376,7 +376,7 @@ namespace DepotDownloader
             Console.WriteLine("\t-app <#>\t\t\t\t- the AppID to download.");
             Console.WriteLine("\t-depot <#>\t\t\t\t- the DepotID to download.");
             Console.WriteLine("\t-manifest <id>\t\t\t- manifest id of content to download (requires -depot, default: current for branch).");
-            Console.WriteLine("\t-beta <branchname>\t\t\t- download from specified branch if available (default: Public).");
+            Console.WriteLine($"\t-beta <branchname>\t\t\t- download from specified branch if available (default: {ContentDownloader.DEFAULT_BRANCH}).");
             Console.WriteLine("\t-betapassword <pass>\t\t- branch password if applicable.");
             Console.WriteLine("\t-all-platforms\t\t\t- downloads all platform-specific depots when -app is used.");
             Console.WriteLine("\t-os <os>\t\t\t\t- the operating system for which to download the game (windows, macos or linux, default: OS the program is currently running on)");