+local config = require "core.configmanager";
+local ping_hosts = config.get("*", "mod_selftests", "ping_hosts") or { "coversant.interop.xmpp.org", "djabberd.interop.xmpp.org", "djabberd-trunk.interop.xmpp.org", "ejabberd.interop.xmpp.org", "openfire.interop.xmpp.org" };