Fix issue with default route prefix

README.md

@@ -67,4 +67,19 @@ The above is supported in the following SDKs;
 
 * [PlayFab C# SDK](https://github.com/PlayFab/CSharpSDK)
 * [PlayFab Unity SDK](https://github.com/PlayFab/UnitySDK)
-* [Unreal 4 Marketplace PlugIn for PlayFab](https://github.com/PlayFab/UnrealMarketplacePlugin)
+* [Unreal 4 Marketplace PlugIn for PlayFab](https://github.com/PlayFab/UnrealMarketplacePlugin)
+
+## Custom route prefixes
+
+If you use a custom route prefix in your host.json, you will need to change the /api/ part of the file content to match the custom route prefix specified in the host.json. For example, if your host.json specifies a route prefix
+of 'cs', then your playfab.local.settings.json should be as follows;
+
+```
+{ "LocalApiServer": "http://localhost:7071/cs/" }
+```
+
+If your host.json specifies an empty custom route prefix, then your playfab.local.settings.jsoon should be as follows;
+
+```
+{ "LocalApiServer": "http://localhost:7071/" }
+```

csharp/ExecuteFunction.cs

@@ -26,6 +26,7 @@ public static class LocalExecuteFunction
         private const string DEV_SECRET_KEY = "PLAYFAB_DEV_SECRET_KEY";
         private const string TITLE_ID = "PLAYFAB_TITLE_ID";
         private const string CLOUD_NAME = "PLAYFAB_CLOUD_NAME";
+        private const string _defaultRoutePrefix = "api";
         private static readonly HttpClient httpClient = new HttpClient();
 
         /// <summary>
@@ -327,8 +328,7 @@ private static string GetHostRoutePrefix()
             }
 
             var hostModel = PlayFabSimpleJson.DeserializeObject<HostJsonModel>(hostFileContent);
-
-            return hostModel?.extensions?.http?.routePrefix;
+            return hostModel?.extensions?.http?.routePrefix ?? _defaultRoutePrefix;
         }
 
         private static async Task<string> DecompressHttpBody(HttpRequest request)