aboutsummaryrefslogtreecommitdiffstats
path: root/net/server.lua
blob: 1240c98d0f471f521b276c92a3967c344256d811 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
-- 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.
--

if not (prosody and prosody.config_loaded) then
	-- This module only supports loading inside Prosody, outside Prosody
	-- you should directly require net.server_select or server_event, etc.
	error(debug.traceback("Loading outside Prosody or Prosody not yet initialized"), 0);
end

local log = require "prosody.util.logger".init("net.server");

local default_backend = "epoll";

local server_type = require "prosody.core.configmanager".get("*", "network_backend") or default_backend;

if require "prosody.core.configmanager".get("*", "use_libevent") then
	server_type = "event";
end

if server_type == "event" then
	if not pcall(require, "luaevent.core") then
		log("error", "libevent not found, falling back to %s", default_backend);
		server_type = default_backend;
	end
end

local server;
local set_config;
if server_type == "event" then
	server = require "prosody.net.server_event";

	local defaults = {};
	for k,v in pairs(server.cfg) do
		defaults[k] = v;
	end
	function set_config(settings)
		local event_settings = {
			ACCEPT_DELAY = settings.accept_retry_interval;
			ACCEPT_QUEUE = settings.tcp_backlog;
			CLEAR_DELAY = settings.event_clear_interval;
			CONNECT_TIMEOUT = settings.connect_timeout;
			DEBUG = settings.debug;
			HANDSHAKE_TIMEOUT = settings.ssl_handshake_timeout;
			MAX_CONNECTIONS = settings.max_connections;
			MAX_HANDSHAKE_ATTEMPTS = settings.max_ssl_handshake_roundtrips;
			MAX_READ_LENGTH = settings.max_receive_buffer_size;
			MAX_SEND_LENGTH = settings.max_send_buffer_size;
			READ_TIMEOUT = settings.read_timeout;
			WRITE_TIMEOUT = settings.send_timeout;
		};

		for k,default in pairs(defaults) do
			server.cfg[k] = event_settings[k] or default;
		end
	end
elseif server_type == "select" then
	-- TODO Remove completely.
	log("warn", "select is deprecated, the new default is epoll. For more info see https://prosody.im/doc/network_backend");
	server = require "prosody.net.server_select";

	local defaults = {};
	for k,v in pairs(server.getsettings()) do
		defaults[k] = v;
	end
	function set_config(settings)
		local select_settings = {};
		for k,default in pairs(defaults) do
			select_settings[k] = settings[k] or default;
		end
		server.changesettings(select_settings);
	end
else
	server = require("prosody.net.server_"..server_type);
	set_config = server.set_config;
	if not server.get_backend then
		function server.get_backend()
			return server_type;
		end
	end
end

-- If server.hook_signal exists, replace signal.signal()
local has_signal, signal = pcall(require, "prosody.util.signal");
if has_signal then
	if server.hook_signal then
		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
	else
		server.hook_signal = signal.signal;
	end
else
	if not server.hook_signal then
		server.hook_signal = function()
			return false, "signal hooking not supported"
		end
	end
end

if prosody and set_config then
	local config_get = require "prosody.core.configmanager".get;
	local function load_config()
		local settings = config_get("*", "network_settings") or {};
		return set_config(settings);
	end
	load_config();
	prosody.events.add_handler("config-reloaded", load_config);
end

local tls_builder = server.tls_builder;
-- resolving the basedir here avoids util.sslconfig depending on
-- prosody.paths.config
function server.tls_builder()
	return tls_builder(prosody.paths.config or "")
end

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