libnm-glib: print a bold warning about reaching a D-Bus limit

This causes incorrect application behaviour, so libnm-glib should warn
at least.

diff --git a/libnm-glib/nm-remote-settings.c b/libnm-glib/nm-remote-settings.c
index d5f4ca6..ba0aa47 100644 (file)
--- a/libnm-glib/nm-remote-settings.c
+++ b/libnm-glib/nm-remote-settings.c
@@ -469,6 +469,7 @@ connection_inited (GObject *source, GAsyncResult *result, gpointer user_data)
        AddConnectionInfo *addinfo;
        const char *path;
        GError *error = NULL, *local;
+       static gboolean print_once = TRUE;
 
        path = nm_connection_get_path (NM_CONNECTION (remote));
        addinfo = add_connection_info_find (self, remote);
@@ -504,6 +505,14 @@ connection_inited (GObject *source, GAsyncResult *result, gpointer user_data)
                if (!dbus_g_error_has_name (error, "org.freedesktop.NetworkManager.Settings.PermissionDenied"))
                        g_hash_table_remove (priv->pending, path);
 
+               if (print_once && error->code == DBUS_GERROR_LIMITS_EXCEEDED) {
+                       g_printerr ("Warning: libnm-glib:%s(): a D-Bus limit exceeded: %s. The application might not work properly.\n"
+                                   "Consider increasing max_replies_per_connection limit in /etc/dbus-1/system.d/org.freedesktop.NetworkManager.conf "
+                                   "like <limit name=\"max_replies_per_connection\">2048</limit>",
+                                   __func__, error->message);
+                       print_once = FALSE;
+               }
+
                g_error_free (error);
        }