--- a/util/xmppstream.lua	Mon May 10 17:02:37 2021 +0100
+++ b/util/xmppstream.lua	Mon May 10 17:03:27 2021 +0100
@@ -293,6 +293,9 @@
 			return ok, err;
 		end,
 		set_session = meta.set_session;
+		set_stanza_size_limit = function (_, new_stanza_size_limit)
+			stanza_size_limit = new_stanza_size_limit;
+		end;
 	};
 end