don't let every single possible client explode just because one malformed message was seen

franz/Telefranz.cs

@@ -37,24 +37,27 @@ namespace franz
                     while (!token.IsCancellationRequested)
                     {
                         var cr = topicConsumer.Consume();
+                        try{
                             var deserialized = JsonConvert.DeserializeObject(cr.Message.Value, messageType);
                             if (deserialized != null && (deserialized as gray_messages.message).type == deserialized.GetType().ToString())
                             {
                                 foreach (var waitingAction in externalSubscribers)
-                            {
-                                try
                                 {
                                     waitingAction(deserialized);
                                 }
+                            }
+                        }
+                        catch(JsonSerializationException jse)
+                        {
+                            Console.Error.WriteLine($"couldn't deserialize {cr?.Message?.Value} as {messageType}; {jse}");
+                        }
                         catch (Exception e)
                         {
-                                    Console.Error.WriteLine("if I don't catch this error the whole thing dies so...");
+                            Console.Error.WriteLine("something happened in an action handler for: ");
                             Console.Error.WriteLine(JsonConvert.SerializeObject(e));
                         }
                     }
                 }
-                    }
-                }
                 finally
                 {
                     topicConsumer.Close();