return undefined hosts and ports in error cases

Author: timo

src/io/asyncsocket.c

@@ -710,6 +710,10 @@ static void on_connection(uv_stream_t *server, int status) {
             MVMObject *msg_box = MVM_repr_box_str(tc,
                 tc->instance->boot_types.BOOTStr, msg_str);
             MVM_repr_push_o(tc, arr, msg_box);
+            MVM_repr_push_o(tc, arr, tc->instance->boot_types.BOOTStr);
+            MVM_repr_push_o(tc, arr, tc->instance->boot_types.BOOTInt);
+            MVM_repr_push_o(tc, arr, tc->instance->boot_types.BOOTStr);
+            MVM_repr_push_o(tc, arr, tc->instance->boot_types.BOOTInt);
         });
         });
     }
@@ -742,7 +746,12 @@ static void listen_setup(MVMThreadContext *tc, uv_loop_t *loop, MVMObject *async
                     tc->instance->VMString, uv_strerror(r));
                 MVMObject *msg_box = MVM_repr_box_str(tc,
                     tc->instance->boot_types.BOOTStr, msg_str);
+
                 MVM_repr_push_o(tc, arr, msg_box);
+                MVM_repr_push_o(tc, arr, tc->instance->boot_types.BOOTStr);
+                MVM_repr_push_o(tc, arr, tc->instance->boot_types.BOOTInt);
+                MVM_repr_push_o(tc, arr, tc->instance->boot_types.BOOTStr);
+                MVM_repr_push_o(tc, arr, tc->instance->boot_types.BOOTInt);
             });
             MVM_repr_push_o(tc, t->body.queue, arr);
         });