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-- 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 use_luaevent = prosody and require "core.configmanager".get("*", "core", "use_libevent");

if use_luaevent then
use_luaevent = pcall(require, "luaevent.core");
if not use_luaevent then
log("error", "libevent not found, falling back to select()");
end
end

local server;

if use_luaevent then
server = require "net.server_event";
-- util.timer requires "net.server", so instead of having
-- Lua look for, and load us again (causing a loop) - set this here
-- (usually it isn't set until we return, look down there...)
package.loaded["net.server"] = server;

-- Backwards compatibility for timers, addtimer
-- called a function roughly every second
local add_task = require "util.timer".add_task;
function server.addtimer(f)
return add_task(1, function (...) f(...); return 1; end);
end

-- Overwrite signal.signal() because we need to ask libevent to
-- handle them instead
local ok, signal = pcall(require, "util.signal");
if ok and signal then
local _signal_signal = signal.signal;
function signal.signal(signal_id, handler)
if type(signal_id) == "string" then
signal_id = signal[signal_id:upper()];
end
if type(signal_id) ~= "number" then
return false, "invalid-signal";
end
return server.hook_signal(signal_id, handler);
end
end
else
server = require "net.server_select";
package.loaded["net.server"] = server;
end

-- require "net.server" shall now forever return this,
-- ie. server_select or server_event as chosen above.
return server;
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