api: bad request on fail

Pilz.Net/Api/ApiServer.cs

@@ -349,7 +349,7 @@ public class ApiServer : IApiServer
             }
             catch (MissingDataManagerException mdmex)
             {
-                Log.Error("DataManager is not supported by this server instnace!", mdmex);
+                Log.Error("DataManager is not supported by this server instance!", mdmex);
                 if (DebugMode) throw;
             }
             catch (Exception ex)
@@ -387,9 +387,11 @@ public class ApiServer : IApiServer
     {
         Log.Debug("Start handling request");
 
-        void close()
+        void close(bool badRequest)
         {
             Log.Debug("End handling request");
+            if (badRequest)
+                context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
             context.Response.OutputStream.Close();
         }
 
@@ -400,7 +402,7 @@ public class ApiServer : IApiServer
         if (string.IsNullOrWhiteSpace(path))
         {
             Log.Warn("Request has no path");
-            close();
+            close(true);
             return;
         }
 
@@ -409,7 +411,7 @@ public class ApiServer : IApiServer
         if (!TryGetHandler(path, query, context.Request.HttpMethod, out var handler))
         {
             Log.Warn("Request handler couldn't be found");
-            close();
+            close(true);
             return;
         }
 
@@ -433,13 +435,13 @@ public class ApiServer : IApiServer
             catch (OutOfMemoryException)
             {
                 Log.Error("Error reading remote data due to missing memory");
-                close();
+                close(true);
                 return;
             }
             catch (Exception ex)
             {
                 Log.Error("Error reading remote data", ex);
-                close();
+                close(true);
                 return;
             }
         }
@@ -451,7 +453,7 @@ public class ApiServer : IApiServer
         if (HandleMessage(context, path, query, handler, contentJson, authKey) is not PrivateApiResult result)
         {
             Log.Warn("Request couldn't be handled");
-            close();
+            close(true);
             return;
         }
 
@@ -482,7 +484,8 @@ public class ApiServer : IApiServer
         }
 
         Log.Debug("Finish response");
-        close();
+        close(false);
+        return;
     }
 
     protected virtual PrivateApiResult? HandleMessage(HttpListenerContext context, string url, string? query, PrivateMessageHandler handler, string? json, string? authKey)