prosody
524b8cd76780
util/uuid.lua

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Software / code / prosody

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util/uuid.lua @ 9994:524b8cd76780 0.11

net.server_epoll: Restore wantread flag after pause (fixes #1354) If a chunk of data has been received that is larger than the amount read at a time, then the connection is paused for a short time after which it tries to read some more. If, after that, there is still more data to read, it should do the same thing. However, because the "want read" flag is removed and was restored after the delayed reading, it would not schedule another delayed read.
author Kim Alvefur <zash@zash.se>
date Sat, 04 May 2019 04:23:35 +0200
parent 7078:ec17115e3721
child 12355:a0ff5c438e9d
line wrap: on
line source

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

local random = require "util.random";
local random_bytes = random.bytes;
local hex = require "util.hex".to;
local m_ceil = math.ceil;

local function get_nibbles(n)
	return hex(random_bytes(m_ceil(n/2))):sub(1, n);
end

local function get_twobits()
	return ("%x"):format(random_bytes(1):byte() % 4 + 8);
end

local function generate()
	-- generate RFC 4122 complaint UUIDs (version 4 - random)
	return get_nibbles(8).."-"..get_nibbles(4).."-4"..get_nibbles(3).."-"..(get_twobits())..get_nibbles(3).."-"..get_nibbles(12);
end

return {
	get_nibbles=get_nibbles;
	generate = generate ;
	-- COMPAT
	seed = random.seed;
};