mod_c2s, mod_s2s, mod_component, mod_bosh, mod_websockets: Set default stanza size limits c2s/bosh/ws streams will default to 256KB, s2s and components to 512KB. These values are aligned with ejabberd's default settings, which should reduce issues related to inconsistent size limits between servers on the XMPP network. The previous default (10MB) is excessive for any production server, and allows significant memory usage by even unauthenticated sessions.

author: Matthew Wild <mwild1@gmail.com>
date: Fri, 07 May 2021 17:03:49 +0100
parent: 11113:10301c214f4e
child: 11560:3bbb1af92514
--- a/plugins/mod_websocket.lua	Fri May 07 16:41:39 2021 +0100
+++ b/plugins/mod_websocket.lua	Fri May 07 17:03:49 2021 +0100
@@ -28,7 +28,7 @@
 
 local t_concat = table.concat;
 
-local stanza_size_limit = module:get_option_number("c2s_stanza_size_limit", 10 * 1024 * 1024);
+local stanza_size_limit = module:get_option_number("c2s_stanza_size_limit", 1024 * 256);
 local frame_buffer_limit = module:get_option_number("websocket_frame_buffer_limit", 2 * stanza_size_limit);
 local frame_fragment_limit = module:get_option_number("websocket_frame_fragment_limit", 8);
 local stream_close_timeout = module:get_option_number("c2s_close_timeout", 5);