prosody
735b8f4a6d7e
plugins/mod_motd.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

File

plugins/mod_motd.lua @ 11661:735b8f4a6d7e

net.http: Send entire HTTP request header as one write When opportunistic writes are enabled this reduces the number of syscalls and TCP packets sent on the wire. Experiments with TCP Fast Open made this even more obvious. That table trick probably wasn't as efficient. Lua generates bytecode for a table with zero array slots and space for two entries in the hash part, plus code to set [2] and [4]. I didn't verify but I suspect it would have had to resize the table when setting [1] and [3], although probably only once. Concatenating the strings directly in Lua is easier to read and involves no extra table or function call.
author Kim Alvefur <zash@zash.se>
date Thu, 08 Jul 2021 18:21:59 +0200
parent 9791:ca0473cadd1c
child 12977:74b9e05af71e
line wrap: on
line source

-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
-- Copyright (C) 2010 Jeff Mitchell
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

local host = module:get_host();
local motd_text = module:get_option_string("motd_text");
local motd_jid = module:get_option_string("motd_jid", host);

if not motd_text then return; end

local st = require "util.stanza";

motd_text = motd_text:gsub("^%s*(.-)%s*$", "%1"):gsub("\n[ \t]+", "\n"); -- Strip indentation from the config

module:hook("presence/initial", function (event)
	local session = event.origin;
	local motd_stanza =
		st.message({ to = session.full_jid, from = motd_jid })
			:tag("body"):text(motd_text);
	module:send(motd_stanza);
	module:log("debug", "MOTD send to user %s", session.full_jid);
end, 1);