# HG changeset patch
# User Matthew Wild <mwild1@gmail.com>
# Date 1259170763 0
# Node ID 141896297ceaa849ceeeb421ed47cbc0ed4e9df0
# Parent  2abca9cc78b1c134093f5cc9d8bf53c60e394e41# Parent  7cb6460b18d8202c4cc18df301146e852dde2690
Merge with Tobias's SASL redesign branch

diff -r 7cb6460b18d8 -r 141896297cea core/loggingmanager.lua
--- a/core/loggingmanager.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/core/loggingmanager.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -17,6 +17,12 @@
 local os_date, os_getenv = os.date, os.getenv;
 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
 
+if os.getenv("__FLUSH_LOG") then
+	local io_flush = io.flush;
+	local _io_write = io_write;
+	io_write = function(...) _io_write(...); io_flush(); end
+end
+
 local config = require "core.configmanager";
 local eventmanager = require "core.eventmanager";
 local logger = require "util.logger";
diff -r 7cb6460b18d8 -r 141896297cea core/modulemanager.lua
--- a/core/modulemanager.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/core/modulemanager.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -28,7 +28,9 @@
 local next = next;
 local rawget = rawget;
 local error = error;
-local tostring = tostring;
+local tostring, tonumber = tostring, tonumber;
+
+local array, set = require "util.array", require "util.set";
 
 local autoload_modules = {"presence", "message", "iq"};
 
@@ -400,6 +402,85 @@
 	return value;
 end
 
+function api:get_option_string(...)
+	local value = self:get_option(...);
+	if type(value) == "table" then
+		if #value > 1 then
+			self:log("error", "Config option '%s' does not take a list, using just the first item", name);
+		end
+		value = value[1];
+	end
+	if value == nil then
+		return nil;
+	end
+	return tostring(value);
+end
+
+function api:get_option_number(name, ...)
+	local value = self:get_option(name, ...);
+	if type(value) == "table" then
+		if #value > 1 then
+			self:log("error", "Config option '%s' does not take a list, using just the first item", name);
+		end
+		value = value[1];
+	end
+	local ret = tonumber(value);
+	if value ~= nil and ret == nil then
+		self:log("error", "Config option '%s' not understood, expecting a number", name);
+	end
+	return ret;
+end
+
+function api:get_option_boolean(name, ...)
+	local value = self:get_option(name, ...);
+	if type(value) == "table" then
+		if #value > 1 then
+			self:log("error", "Config option '%s' does not take a list, using just the first item", name);
+		end
+		value = value[1];
+	end
+	if value == nil then
+		return nil;
+	end
+	local ret = value == true or value == "true" or value == 1 or nil;
+	if ret == nil then
+		ret = (value == false or value == "false" or value == 0);
+		if ret then
+			ret = false;
+		else
+			ret = nil;
+		end
+	end
+	if ret == nil then
+		self:log("error", "Config option '%s' not understood, expecting true/false", name);
+	end
+	return ret;
+end
+
+function api:get_option_array(name, ...)
+	local value = self:get_option(name, ...);
+
+	if value == nil then
+		return nil;
+	end
+	
+	if type(value) ~= "table" then
+		return array{ value }; -- Assume any non-list is a single-item list
+	end
+	
+	return array():append(value); -- Clone
+end
+
+function api:get_option_set(name, ...)
+	local value = self:get_option_array(name, ...);
+	
+	if value == nil then
+		return nil;
+	end
+	
+	return set.new(value);
+end
+
 local t_remove = _G.table.remove;
 local module_items = multitable_new();
 function api:add_item(key, value)
diff -r 7cb6460b18d8 -r 141896297cea core/objectmanager.lua
--- a/core/objectmanager.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/core/objectmanager.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -6,63 +6,63 @@
 -- COPYING file in the source package for more information.
 --
 
-
-local new_multitable = require "util.multitable".new;
-local t_insert = table.insert;
-local t_concat = table.concat;
-local tostring = tostring;
-local unpack = unpack;
-local pairs = pairs;
-local error = error;
-local type = type;
-local _G = _G;
-
-local data = new_multitable();
-
-module "objectmanager"
-
-function set(...)
-	return data:set(...);
-end
-function remove(...)
-	return data:remove(...);
-end
-function get(...)
-	return data:get(...);
-end
-
-local function get_path(path)
-	if type(path) == "table" then return path; end
-	local s = {};
-	for part in tostring(path):gmatch("[%w_]+") do
-		t_insert(s, part);
-	end
-	return s;
-end
-
-function get_object(path)
-	path = get_path(path)
-	return data:get(unpack(path)), path;
-end
-function set_object(path, object)
-	path = get_path(path);
-	data:set(unpack(path), object);
-end
-
-data:set("ls", function(_dir)
-	local obj, dir = get_object(_dir);
-	if not obj then error("object not found: " .. t_concat(dir, '/')); end
-	local r = {};
-	if type(obj) == "table" then
-		for key, val in pairs(obj) do
-			r[key] = type(val);
-		end
-	end
-	return r;
-end);
-data:set("get", get_object);
-data:set("set", set_object);
-data:set("echo", function(...) return {...}; end);
-data:set("_G", _G);
-
-return _M;
+
+local new_multitable = require "util.multitable".new;
+local t_insert = table.insert;
+local t_concat = table.concat;
+local tostring = tostring;
+local unpack = unpack;
+local pairs = pairs;
+local error = error;
+local type = type;
+local _G = _G;
+
+local data = new_multitable();
+
+module "objectmanager"
+
+function set(...)
+	return data:set(...);
+end
+function remove(...)
+	return data:remove(...);
+end
+function get(...)
+	return data:get(...);
+end
+
+local function get_path(path)
+	if type(path) == "table" then return path; end
+	local s = {};
+	for part in tostring(path):gmatch("[%w_]+") do
+		t_insert(s, part);
+	end
+	return s;
+end
+
+function get_object(path)
+	path = get_path(path)
+	return data:get(unpack(path)), path;
+end
+function set_object(path, object)
+	path = get_path(path);
+	data:set(unpack(path), object);
+end
+
+data:set("ls", function(_dir)
+	local obj, dir = get_object(_dir);
+	if not obj then error("object not found: " .. t_concat(dir, '/')); end
+	local r = {};
+	if type(obj) == "table" then
+		for key, val in pairs(obj) do
+			r[key] = type(val);
+		end
+	end
+	return r;
+end);
+data:set("get", get_object);
+data:set("set", set_object);
+data:set("echo", function(...) return {...}; end);
+data:set("_G", _G);
+
+return _M;
diff -r 7cb6460b18d8 -r 141896297cea core/s2smanager.lua
--- a/core/s2smanager.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/core/s2smanager.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -79,15 +79,15 @@
 end
 
 function send_to_host(from_host, to_host, data)
+	if not hosts[from_host] then
+		log("warn", "Attempt to send stanza from %s - a host we don't serve", from_host);
+		return false;
+	end
 	local host = hosts[from_host].s2sout[to_host];
 	if host then
 		-- We have a connection to this host already
-		if host.type == "s2sout_unauthed" and data.name ~= "db:verify" and ((not data.xmlns) or data.xmlns == "jabber:client" or data.xmlns == "jabber:server") then
+		if host.type == "s2sout_unauthed" and (data.name ~= "db:verify" or not host.dialback_key) and ((not data.xmlns) or data.xmlns == "jabber:client" or data.xmlns == "jabber:server") then
 			(host.log or log)("debug", "trying to send over unauthed s2sout to "..to_host);
-			if not host.notopen and not host.dialback_key and host.sends2s then
-				host.log("debug", "dialback had not been initiated");
-				initiate_dialback(host);
-			end
 			
 			-- Queue stanza until we are able to send it
 			if host.sendq then t_insert(host.sendq, {tostring(data), st.reply(data)});
@@ -110,6 +110,7 @@
 	else
 		log("debug", "opening a new outgoing connection for this stanza");
 		local host_session = new_outgoing(from_host, to_host);
+
 		-- Store in buffer
 		host_session.sendq = { {tostring(data), st.reply(data)} };
 		log("debug", "stanza [%s] queued until connection complete", tostring(data.name));
@@ -131,7 +132,7 @@
 	open_sessions = open_sessions + 1;
 	local w, log = conn.write, logger_init("s2sin"..tostring(conn):match("[a-f0-9]+$"));
 	session.log = log;
-	session.sends2s = function (t) log("debug", "sending: %s", tostring(t)); w(tostring(t)); end
+	session.sends2s = function (t) log("debug", "sending: %s", t.top_tag and t:top_tag() or t:match("^([^>]*>?)")); w(conn, tostring(t)); end
 	incoming_s2s[session] = true;
 	add_task(connect_timeout, function ()
 		if session.conn ~= conn or
@@ -159,7 +160,7 @@
 			host_session.log = log;
 		end
 		
-		-- This is the first call, can't fail (the first step is DNS lookup)
+		-- Kick the connection attempting machine
 		attempt_connection(host_session);
 		
 		if not host_session.sends2s then		
@@ -187,6 +188,10 @@
 	local from_host, to_host = host_session.from_host, host_session.to_host;
 	local connect_host, connect_port = idna_to_ascii(to_host), 5269;
 	
+	if not connect_host then
+		return false;
+	end
+	
 	if not err then -- This is our first attempt
 		log("debug", "First attempt to connect to %s, starting with SRV lookup...", to_host);
 		host_session.connecting = true;
@@ -316,9 +321,9 @@
 	cl.register_outgoing(conn, host_session);
 	
 	local w, log = conn.write, host_session.log;
-	host_session.sends2s = function (t) log("debug", "sending: %s", tostring(t)); w(tostring(t)); end
+	host_session.sends2s = function (t) log("debug", "sending: %s", (t.top_tag and t:top_tag()) or t:match("^[^>]*>?")); w(conn, tostring(t)); end
 	
-	conn.write(format([[<stream:stream xmlns='jabber:server' xmlns:db='jabber:server:dialback' xmlns:stream='http://etherx.jabber.org/streams' from='%s' to='%s' version='1.0' xml:lang='en'>]], from_host, to_host));
+	conn:write(format([[<stream:stream xmlns='jabber:server' xmlns:db='jabber:server:dialback' xmlns:stream='http://etherx.jabber.org/streams' from='%s' to='%s' version='1.0' xml:lang='en'>]], from_host, to_host));
 	log("debug", "Connection attempt in progress...");
 	add_task(connect_timeout, function ()
 		if host_session.conn ~= conn or
diff -r 7cb6460b18d8 -r 141896297cea core/sessionmanager.lua
--- a/core/sessionmanager.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/core/sessionmanager.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -10,7 +10,6 @@
 
 local tonumber, tostring = tonumber, tostring;
 local ipairs, pairs, print, next= ipairs, pairs, print, next;
-local collectgarbage = collectgarbage;
 local format = import("string", "format");
 
 local hosts = hosts;
@@ -50,8 +49,8 @@
 	open_sessions = open_sessions + 1;
 	log("debug", "open sessions now: ".. open_sessions);
 	local w = conn.write;
-	session.send = function (t) w(tostring(t)); end
-	session.ip = conn.ip();
+	session.send = function (t) w(conn, tostring(t)); end
+	session.ip = conn:ip();
 	local conn_name = "c2s"..tostring(conn):match("[a-f0-9]+$");
 	session.log = logger.init(conn_name);
 	
@@ -201,22 +200,32 @@
 end
 
 function send_to_available_resources(user, host, stanza)
+	local jid = user.."@"..host;
 	local count = 0;
-	local to = stanza.attr.to;
-	stanza.attr.to = nil;
-	local h = hosts[host];
-	if h and h.type == "local" then
-		local u = h.sessions[user];
-		if u then
-			for k, session in pairs(u.sessions) do
-				if session.presence then
-					session.send(stanza);
-					count = count + 1;
-				end
+	local user = bare_sessions[jid];
+	if user then
+		for k, session in pairs(user.sessions) do
+			if session.presence then
+				session.send(stanza);
+				count = count + 1;
 			end
 		end
 	end
-	stanza.attr.to = to;
+	return count;
+end
+
+function send_to_interested_resources(user, host, stanza)
+	local jid = user.."@"..host;
+	local count = 0;
+	local user = bare_sessions[jid];
+	if user then
+		for k, session in pairs(user.sessions) do
+			if session.interested then
+				session.send(stanza);
+				count = count + 1;
+			end
+		end
+	end
 	return count;
 end
 
diff -r 7cb6460b18d8 -r 141896297cea core/stanza_router.lua
--- a/core/stanza_router.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/core/stanza_router.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -180,7 +180,7 @@
 			local xmlns = stanza.attr.xmlns;
 			--stanza.attr.xmlns = "jabber:server";
 			stanza.attr.xmlns = nil;
-			log("debug", "sending s2s stanza: %s", tostring(stanza));
+			log("debug", "sending s2s stanza: %s", tostring(stanza.top_tag and stanza:top_tag()) or stanza);
 			send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors
 			stanza.attr.xmlns = xmlns; -- reset
 		else
diff -r 7cb6460b18d8 -r 141896297cea net/adns.lua
--- a/net/adns.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/net/adns.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -45,10 +45,10 @@
 function new_async_socket(sock, resolver)
 	local newconn, peername = {}, "<unknown>";
 	local listener = {};
-	function listener.incoming(conn, data)
+	function listener.onincoming(conn, data)
 		dns.feed(sock, data);
 	end
-	function listener.disconnect(conn, err)
+	function listener.ondisconnect(conn, err)
 		log("warn", "DNS socket for %s disconnected: %s", peername, err);
 		local servers = resolver.server;
 		if resolver.socketset[newconn.handler] == resolver.best_server and resolver.best_server == #servers then
@@ -68,7 +68,7 @@
 	newconn.handler.setsockname = function (_, ...) return sock:setsockname(...); end
 	newconn.handler.setpeername = function (_, ...) peername = (...); local ret = sock:setpeername(...); _.setsend(sock.send); return ret; end
 	newconn.handler.connect = function (_, ...) return sock:connect(...) end	
-	newconn.handler.send = function (_, data) _.write(data); return _.sendbuffer(); end	
+	newconn.handler.send = function (_, data) _.write(_, data); return _.sendbuffer(); end	
 	return newconn.handler;
 end
 
diff -r 7cb6460b18d8 -r 141896297cea net/connlisteners.lua
--- a/net/connlisteners.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/net/connlisteners.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -61,9 +61,14 @@
 		end
 	end
 	
-	return server.addserver(h, 
-			(udata and udata.port) or h.default_port or error("Can't start listener "..name.." because no port was specified, and it has no default port", 0), 
-				(udata and udata.interface) or h.default_interface or "*", (udata and udata.mode) or h.default_mode or 1, (udata and udata.ssl) or nil, 99999999, udata and udata.type == "ssl");
+	local interface = (udata and udata.interface) or h.default_interface or "*";
+	local port = (udata and udata.port) or h.default_port or error("Can't start listener "..name.." because no port was specified, and it has no default port", 0);
+	local mode = (udata and udata.mode) or h.default_mode or 1;
+	local ssl = (udata and udata.ssl) or nil;
+	local maxclients = 99999999;
+	local autossl = udata and udata.type == "ssl";
+	
+	return server.addserver(interface, port, h, mode, ssl, autossl);
 end
 
 return _M;
diff -r 7cb6460b18d8 -r 141896297cea net/http.lua
--- a/net/http.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/net/http.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -152,7 +152,7 @@
 	end
 	
 	req.handler, req.conn = server.wrapclient(socket.tcp(), req.host, req.port or 80, listener, "*a");
-	req.write = req.handler.write;
+	req.write = function (...) return req.handler:write(...); end
 	req.conn:settimeout(0);
 	local ok, err = req.conn:connect(req.host, req.port or 80);
 	if not ok and err ~= "timeout" then
@@ -200,7 +200,7 @@
 function destroy_request(request)
 	if request.conn then
 		request.handler.close()
-		listener.disconnect(request.conn, "closed");
+		listener.ondisconnect(request.conn, "closed");
 	end
 end
 
diff -r 7cb6460b18d8 -r 141896297cea net/httpclient_listener.lua
--- a/net/httpclient_listener.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/net/httpclient_listener.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -15,7 +15,7 @@
 
 local httpclient = { default_port = 80, default_mode = "*a" };
 
-function httpclient.listener(conn, data)
+function httpclient.onincoming(conn, data)
 	local request = requests[conn];
 
 	if not request then
@@ -28,7 +28,7 @@
 	end
 end
 
-function httpclient.disconnect(conn, err)
+function httpclient.ondisconnect(conn, err)
 	local request = requests[conn];
 	if request then
 		request:reader(nil);
diff -r 7cb6460b18d8 -r 141896297cea net/httpserver.lua
--- a/net/httpserver.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/net/httpserver.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -209,7 +209,7 @@
 
 function new_request(handler)
 	return { handler = handler, conn = handler.socket, 
-			write = handler.write, state = "request", 
+			write = function (...) return handler:write(...); end, state = "request", 
 			server = http_servers[handler.serverport()],
 			send = send_response,
 			destroy = destroy_request,
@@ -230,7 +230,7 @@
 		end
 		request.handler.close()
 		if request.conn then
-			listener.disconnect(request.handler, "closed");
+			listener.ondisconnect(request.handler, "closed");
 		end
 	end
 end
diff -r 7cb6460b18d8 -r 141896297cea net/httpserver_listener.lua
--- a/net/httpserver_listener.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/net/httpserver_listener.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -16,7 +16,7 @@
 
 local httpserver = { default_port = 80, default_mode = "*a" };
 
-function httpserver.listener(conn, data)
+function httpserver.onincoming(conn, data)
 	local request = requests[conn];
 
 	if not request then
@@ -34,7 +34,7 @@
 	end
 end
 
-function httpserver.disconnect(conn, err)
+function httpserver.ondisconnect(conn, err)
 	local request = requests[conn];
 	if request and not request.destroyed then
 		request.conn = nil;
diff -r 7cb6460b18d8 -r 141896297cea net/server.lua
--- a/net/server.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/net/server.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -1,914 +1,33 @@
--- 
--- server.lua by blastbeat of the luadch project
--- Re-used here under the MIT/X Consortium License
--- 
--- Modifications (C) 2008-2009 Matthew Wild, Waqas Hussain
---
-
--- // wrapping luadch stuff // --
-
-local use = function( what )
-    return _G[ what ]
-end
-local clean = function( tbl )
-    for i, k in pairs( tbl ) do
-        tbl[ i ] = nil
-    end
-end
-
-local log, table_concat = require ("util.logger").init("socket"), table.concat;
-local out_put = function (...) return log("debug", table_concat{...}); end
-local out_error = function (...) return log("warn", table_concat{...}); end
-local mem_free = collectgarbage
-
-----------------------------------// DECLARATION //--
-
---// constants //--
-
-local STAT_UNIT = 1    -- byte
-
---// lua functions //--
-
-local type = use "type"
-local pairs = use "pairs"
-local ipairs = use "ipairs"
-local tostring = use "tostring"
-local collectgarbage = use "collectgarbage"
-
---// lua libs //--
-
-local os = use "os"
-local table = use "table"
-local string = use "string"
-local coroutine = use "coroutine"
-
---// lua lib methods //--
-
-local os_time = os.time
-local os_difftime = os.difftime
-local table_concat = table.concat
-local table_remove = table.remove
-local string_len = string.len
-local string_sub = string.sub
-local coroutine_wrap = coroutine.wrap
-local coroutine_yield = coroutine.yield
-
---// extern libs //--
-
-local luasec = select( 2, pcall( require, "ssl" ) )
-local luasocket = require "socket"
-
---// extern lib methods //--
-
-local ssl_wrap = ( luasec and luasec.wrap )
-local socket_bind = luasocket.bind
-local socket_sleep = luasocket.sleep
-local socket_select = luasocket.select
-local ssl_newcontext = ( luasec and luasec.newcontext )
-
---// functions //--
-
-local id
-local loop
-local stats
-local idfalse
-local addtimer
-local closeall
-local addserver
-local getserver
-local wrapserver
-local getsettings
-local closesocket
-local removesocket
-local removeserver
-local changetimeout
-local wrapconnection
-local changesettings
-
---// tables //--
-
-local _server
-local _readlist
-local _timerlist
-local _sendlist
-local _socketlist
-local _closelist
-local _readtimes
-local _writetimes
-
---// simple data types //--
-
-local _
-local _readlistlen
-local _sendlistlen
-local _timerlistlen
-
-local _sendtraffic
-local _readtraffic
-
-local _selecttimeout
-local _sleeptime
-
-local _starttime
-local _currenttime
-
-local _maxsendlen
-local _maxreadlen
-
-local _checkinterval
-local _sendtimeout
-local _readtimeout
-
-local _cleanqueue
-
-local _timer
-
-local _maxclientsperserver
-
-----------------------------------// DEFINITION //--
-
-_server = { }    -- key = port, value = table; list of listening servers
-_readlist = { }    -- array with sockets to read from
-_sendlist = { }    -- arrary with sockets to write to
-_timerlist = { }    -- array of timer functions
-_socketlist = { }    -- key = socket, value = wrapped socket (handlers)
-_readtimes = { }   -- key = handler, value = timestamp of last data reading
-_writetimes = { }   -- key = handler, value = timestamp of last data writing/sending
-_closelist = { }    -- handlers to close
-
-_readlistlen = 0    -- length of readlist
-_sendlistlen = 0    -- length of sendlist
-_timerlistlen = 0    -- lenght of timerlist
-
-_sendtraffic = 0    -- some stats
-_readtraffic = 0
-
-_selecttimeout = 1    -- timeout of socket.select
-_sleeptime = 0    -- time to wait at the end of every loop
-
-_maxsendlen = 51000 * 1024    -- max len of send buffer
-_maxreadlen = 25000 * 1024    -- max len of read buffer
-
-_checkinterval = 1200000    -- interval in secs to check idle clients
-_sendtimeout = 60000    -- allowed send idle time in secs
-_readtimeout = 6 * 60 * 60    -- allowed read idle time in secs
-
-_cleanqueue = false    -- clean bufferqueue after using
-
-_maxclientsperserver = 1000
-
-_maxsslhandshake = 30 -- max handshake round-trips
-----------------------------------// PRIVATE //--
-
-wrapserver = function( listeners, socket, ip, serverport, pattern, sslctx, maxconnections, startssl )    -- this function wraps a server
-
-    maxconnections = maxconnections or _maxclientsperserver
-
-    local connections = 0
-
-    local dispatch, disconnect = listeners.incoming or listeners.listener, listeners.disconnect
-
-    local err
-
-    local ssl = false
-
-    if sslctx then
-        ssl = true
-        if not ssl_newcontext then
-            out_error "luasec not found"
-            ssl = false
-        end
-        if type( sslctx ) ~= "table" then
-            out_error "server.lua: wrong server sslctx"
-            ssl = false
-        end
-        local ctx;
-        ctx, err = ssl_newcontext( sslctx )
-        if not ctx then
-            err = err or "wrong sslctx parameters"
-            local file;
-            file = err:match("^error loading (.-) %(");
-            if file then
-            	if file == "private key" then
-            		file = sslctx.key or "your private key";
-            	elseif file == "certificate" then
-            		file = sslctx.certificate or "your certificate file";
-            	end
-	        local reason = err:match("%((.+)%)$") or "some reason";
-	        if reason == "Permission denied" then
-	        	reason = "Check that the permissions allow Prosody to read this file.";
-	        elseif reason == "No such file or directory" then
-	        	reason = "Check that the path is correct, and the file exists.";
-	        elseif reason == "system lib" then
-	        	reason = "Previous error (see logs), or other system error.";
-	        else
-	        	reason = "Reason: "..tostring(reason or "unknown"):lower();
-	        end
-	        log("error", "SSL/TLS: Failed to load %s: %s", file, reason);
-	    else
-                log("error", "SSL/TLS: Error initialising for port %d: %s", serverport, err );
-            end
-            ssl = false
-        end
-        sslctx = ctx;
-    end
-    if not ssl then
-      sslctx = false;
-      if startssl then
-         log("error", "Failed to listen on port %d due to SSL/TLS to SSL/TLS initialisation errors (see logs)", serverport )
-         return nil, "Cannot start ssl,  see log for details"
-       end
-    end
-
-    local accept = socket.accept
-
-    --// public methods of the object //--
-
-    local handler = { }
-
-    handler.shutdown = function( ) end
-
-    handler.ssl = function( )
-        return ssl
-    end
-    handler.sslctx = function( )
-        return sslctx
-    end
-    handler.remove = function( )
-        connections = connections - 1
-    end
-    handler.close = function( )
-        for _, handler in pairs( _socketlist ) do
-            if handler.serverport == serverport then
-                handler.disconnect( handler, "server closed" )
-                handler.close( true )
-            end
-        end
-        socket:close( )
-        _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
-        _readlistlen = removesocket( _readlist, socket, _readlistlen )
-        _socketlist[ socket ] = nil
-        handler = nil
-        socket = nil
-        --mem_free( )
-        out_put "server.lua: closed server handler and removed sockets from list"
-    end
-    handler.ip = function( )
-        return ip
-    end
-    handler.serverport = function( )
-        return serverport
-    end
-    handler.socket = function( )
-        return socket
-    end
-    handler.readbuffer = function( )
-        if connections > maxconnections then
-            out_put( "server.lua: refused new client connection: server full" )
-            return false
-        end
-        local client, err = accept( socket )    -- try to accept
-        if client then
-            local ip, clientport = client:getpeername( )
-            client:settimeout( 0 )
-            local handler, client, err = wrapconnection( handler, listeners, client, ip, serverport, clientport, pattern, sslctx, startssl )    -- wrap new client socket
-            if err then    -- error while wrapping ssl socket
-                return false
-            end
-            connections = connections + 1
-            out_put( "server.lua: accepted new client connection from ", tostring(ip), ":", tostring(clientport), " to ", tostring(serverport))
-            return dispatch( handler )
-        elseif err then    -- maybe timeout or something else
-            out_put( "server.lua: error with new client connection: ", tostring(err) )
-            return false
-        end
-    end
-    return handler
-end
-
-wrapconnection = function( server, listeners, socket, ip, serverport, clientport, pattern, sslctx, startssl )    -- this function wraps a client to a handler object
-
-    socket:settimeout( 0 )
-
-    --// local import of socket methods //--
-
-    local send
-    local receive
-    local shutdown
-
-    --// private closures of the object //--
-
-    local ssl
-
-    local dispatch = listeners.incoming or listeners.listener
-    local status = listeners.status
-    local disconnect = listeners.disconnect
-
-    local bufferqueue = { }    -- buffer array
-    local bufferqueuelen = 0    -- end of buffer array
-
-    local toclose
-    local fatalerror
-    local needtls
-
-    local bufferlen = 0
-
-    local noread = false
-    local nosend = false
-
-    local sendtraffic, readtraffic = 0, 0
-
-    local maxsendlen = _maxsendlen
-    local maxreadlen = _maxreadlen
-
-    --// public methods of the object //--
-
-    local handler = bufferqueue    -- saves a table ^_^
-
-    handler.dispatch = function( )
-        return dispatch
-    end
-    handler.disconnect = function( )
-        return disconnect
-    end
-    handler.setlistener = function( listeners )
-        dispatch = listeners.incoming
-        disconnect = listeners.disconnect
-    end
-    handler.getstats = function( )
-        return readtraffic, sendtraffic
-    end
-    handler.ssl = function( )
-        return ssl
-    end
-    handler.sslctx = function ( )
-        return sslctx
-    end
-    handler.send = function( _, data, i, j )
-        return send( socket, data, i, j )
-    end
-    handler.receive = function( pattern, prefix )
-        return receive( socket, pattern, prefix )
-    end
-    handler.shutdown = function( pattern )
-        return shutdown( socket, pattern )
-    end
-    handler.close = function( forced )
-        if not handler then return true; end
-        _readlistlen = removesocket( _readlist, socket, _readlistlen )
-        _readtimes[ handler ] = nil
-        if bufferqueuelen ~= 0 then
-            if not ( forced or fatalerror ) then
-                handler.sendbuffer( )
-                if bufferqueuelen ~= 0 then   -- try again...
-                    if handler then
-                        handler.write = nil    -- ... but no further writing allowed
-                    end
-                    toclose = true
-                    return false
-                end
-            else
-                send( socket, table_concat( bufferqueue, "", 1, bufferqueuelen ), 1, bufferlen )    -- forced send
-            end
-        end
-        if socket then
-          _ = shutdown and shutdown( socket )
-          socket:close( )
-          _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
-          _socketlist[ socket ] = nil
-          socket = nil
-        else
-          out_put "server.lua: socket already closed"
-        end
-        if handler then
-            _writetimes[ handler ] = nil
-            _closelist[ handler ] = nil
-            handler = nil
-        end
-	if server then
-		server.remove( )
-	end
-        out_put "server.lua: closed client handler and removed socket from list"
-        return true
-    end
-    handler.ip = function( )
-        return ip
-    end
-    handler.serverport = function( )
-        return serverport
-    end
-    handler.clientport = function( )
-        return clientport
-    end
-    local write = function( data )
-        bufferlen = bufferlen + string_len( data )
-        if bufferlen > maxsendlen then
-            _closelist[ handler ] = "send buffer exceeded"   -- cannot close the client at the moment, have to wait to the end of the cycle
-            handler.write = idfalse    -- dont write anymore
-            return false
-        elseif socket and not _sendlist[ socket ] then
-            _sendlistlen = addsocket(_sendlist, socket, _sendlistlen)
-        end
-        bufferqueuelen = bufferqueuelen + 1
-        bufferqueue[ bufferqueuelen ] = data
-        if handler then
-        	_writetimes[ handler ] = _writetimes[ handler ] or _currenttime
-        end
-        return true
-    end
-    handler.write = write
-    handler.bufferqueue = function( )
-        return bufferqueue
-    end
-    handler.socket = function( )
-        return socket
-    end
-    handler.pattern = function( new )
-        pattern = new or pattern
-        return pattern
-    end
-    handler.setsend = function ( newsend )
-        send = newsend or send
-        return send
-    end
-    handler.bufferlen = function( readlen, sendlen )
-        maxsendlen = sendlen or maxsendlen
-        maxreadlen = readlen or maxreadlen
-        return maxreadlen, maxsendlen
-    end
-    handler.lock = function( switch )
-        if switch == true then
-            handler.write = idfalse
-            local tmp = _sendlistlen
-            _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
-            _writetimes[ handler ] = nil
-            if _sendlistlen ~= tmp then
-                nosend = true
-            end
-            tmp = _readlistlen
-            _readlistlen = removesocket( _readlist, socket, _readlistlen )
-            _readtimes[ handler ] = nil
-            if _readlistlen ~= tmp then
-                noread = true
-            end
-        elseif switch == false then
-            handler.write = write
-            if noread then
-                noread = false
-                _readlistlen = addsocket(_readlist, socket, _readlistlen)
-                _readtimes[ handler ] = _currenttime
-            end
-            if nosend then
-                nosend = false
-                write( "" )
-            end
-        end
-        return noread, nosend
-    end
-    local _readbuffer = function( )    -- this function reads data
-        local buffer, err, part = receive( socket, pattern )    -- receive buffer with "pattern"
-        if not err or ( err == "timeout" or err == "wantread" ) then    -- received something
-            local buffer = buffer or part or ""
-            local len = string_len( buffer )
-            if len > maxreadlen then
-                disconnect( handler, "receive buffer exceeded" )
-                handler.close( true )
-                return false
-            end
-            local count = len * STAT_UNIT
-            readtraffic = readtraffic + count
-            _readtraffic = _readtraffic + count
-            _readtimes[ handler ] = _currenttime
-            --out_put( "server.lua: read data '", buffer:gsub("[^%w%p ]", "."), "', error: ", err )
-            return dispatch( handler, buffer, err )
-        else    -- connections was closed or fatal error
-            out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " read error: ", tostring(err) )
-            fatalerror = true
-            disconnect( handler, err )
-	    _ = handler and handler.close( )
-            return false
-        end
-    end
-    local _sendbuffer = function( )    -- this function sends data
-    	local succ, err, byte, buffer, count;
-    	local count;
-    	if socket then
-            buffer = table_concat( bufferqueue, "", 1, bufferqueuelen )
-            succ, err, byte = send( socket, buffer, 1, bufferlen )
-            count = ( succ or byte or 0 ) * STAT_UNIT
-            sendtraffic = sendtraffic + count
-            _sendtraffic = _sendtraffic + count
-            _ = _cleanqueue and clean( bufferqueue )
-            --out_put( "server.lua: sended '", buffer, "', bytes: ", tostring(succ), ", error: ", tostring(err), ", part: ", tostring(byte), ", to: ", tostring(ip), ":", tostring(clientport) )
-        else
-            succ, err, count = false, "closed", 0;
-        end
-        if succ then    -- sending succesful
-            bufferqueuelen = 0
-            bufferlen = 0
-            _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )    -- delete socket from writelist
-            _ = needtls and handler.starttls(true)
-            _writetimes[ handler ] = nil
-	    _ = toclose and handler.close( )
-            return true
-        elseif byte and ( err == "timeout" or err == "wantwrite" ) then    -- want write
-            buffer = string_sub( buffer, byte + 1, bufferlen )    -- new buffer
-            bufferqueue[ 1 ] = buffer    -- insert new buffer in queue
-            bufferqueuelen = 1
-            bufferlen = bufferlen - byte
-            _writetimes[ handler ] = _currenttime
-            return true
-        else    -- connection was closed during sending or fatal error
-            out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " write error: ", tostring(err) )
-            fatalerror = true
-            disconnect( handler, err )
-            _ = handler and handler.close( )
-            return false
-        end
-    end
-
-    -- Set the sslctx
-    local handshake;
-    function handler.set_sslctx(new_sslctx)
-        ssl = true
-        sslctx = new_sslctx;
-        local wrote
-        local read
-        handshake = coroutine_wrap( function( client )    -- create handshake coroutine
-                local err
-                for i = 1, _maxsslhandshake do
-                    _sendlistlen = ( wrote and removesocket( _sendlist, client, _sendlistlen ) ) or _sendlistlen
-                    _readlistlen = ( read and removesocket( _readlist, client, _readlistlen ) ) or _readlistlen
-                    read, wrote = nil, nil
-                    _, err = client:dohandshake( )
-                    if not err then
-                        out_put( "server.lua: ssl handshake done" )
-                        handler.readbuffer = _readbuffer    -- when handshake is done, replace the handshake function with regular functions
-                        handler.sendbuffer = _sendbuffer
-                        _ = status and status( handler, "ssl-handshake-complete" )
-                        _readlistlen = addsocket(_readlist, client, _readlistlen)
-                        return true
-                    else
-                       out_put( "server.lua: error during ssl handshake: ", tostring(err) )
-                       if err == "wantwrite" and not wrote then
-                           _sendlistlen = addsocket(_sendlist, client, _sendlistlen)
-                           wrote = true
-                       elseif err == "wantread" and not read then
-                           _readlistlen = addsocket(_readlist, client, _readlistlen)
-                           read = true
-                       else
-                           break;
-                       end
-                       --coroutine_yield( handler, nil, err )    -- handshake not finished
-                       coroutine_yield( )
-                    end
-                end
-                disconnect( handler, "ssl handshake failed" )
-                _ = handler and handler.close( true )    -- forced disconnect
-                return false    -- handshake failed
-            end
-        )
-    end
-    if sslctx then    -- ssl?
-    	handler.set_sslctx(sslctx);
-        if startssl then    -- ssl now?
-            --out_put("server.lua: ", "starting ssl handshake")
-	    local err
-            socket, err = ssl_wrap( socket, sslctx )    -- wrap socket
-            if err then
-                out_put( "server.lua: ssl error: ", tostring(err) )
-                --mem_free( )
-                return nil, nil, err    -- fatal error
-            end
-            socket:settimeout( 0 )
-            handler.readbuffer = handshake
-            handler.sendbuffer = handshake
-            handshake( socket ) -- do handshake
-            if not socket then
-                return nil, nil, "ssl handshake failed";
-            end
-        else
-            -- We're not automatically doing SSL, so we're not secure (yet)
-            ssl = false
-            handler.starttls = function( now )
-                if not now then
-                    --out_put "server.lua: we need to do tls, but delaying until later"
-                    needtls = true
-                    return
-                end
-                --out_put( "server.lua: attempting to start tls on " .. tostring( socket ) )
-                local oldsocket, err = socket
-                socket, err = ssl_wrap( socket, sslctx )    -- wrap socket
-                --out_put( "server.lua: sslwrapped socket is " .. tostring( socket ) )
-                if err then
-                    out_put( "server.lua: error while starting tls on client: ", tostring(err) )
-                    return nil, err    -- fatal error
-                end
-
-                socket:settimeout( 0 )
-
-                -- add the new socket to our system
-
-                send = socket.send
-                receive = socket.receive
-                shutdown = id
-
-                _socketlist[ socket ] = handler
-                _readlistlen = addsocket(_readlist, socket, _readlistlen)
-
-                -- remove traces of the old socket
-
-                _readlistlen = removesocket( _readlist, oldsocket, _readlistlen )
-                _sendlistlen = removesocket( _sendlist, oldsocket, _sendlistlen )
-                _socketlist[ oldsocket ] = nil
-
-                handler.starttls = nil
-                needtls = nil
-                
-                -- Secure now
-                ssl = true
-
-                handler.readbuffer = handshake
-                handler.sendbuffer = handshake
-                handshake( socket )    -- do handshake
-            end
-            handler.readbuffer = _readbuffer
-            handler.sendbuffer = _sendbuffer
-        end
-    else    -- normal connection
-        ssl = false
-        handler.readbuffer = _readbuffer
-        handler.sendbuffer = _sendbuffer
-    end
-
-    send = socket.send
-    receive = socket.receive
-    shutdown = ( ssl and id ) or socket.shutdown
-
-    _socketlist[ socket ] = handler
-    _readlistlen = addsocket(_readlist, socket, _readlistlen)
-
-    return handler, socket
-end
-
-id = function( )
-end
-
-idfalse = function( )
-    return false
-end
-
-addsocket = function( list, socket, len )
-    if not list[ socket ] then
-      len = len + 1
-      list[ len ] = socket
-      list[ socket ] = len
-    end
-    return len;
-end
-
-removesocket = function( list, socket, len )    -- this function removes sockets from a list ( copied from copas )
-    local pos = list[ socket ]
-    if pos then
-        list[ socket ] = nil
-        local last = list[ len ]
-        list[ len ] = nil
-        if last ~= socket then
-            list[ last ] = pos
-            list[ pos ] = last
-        end
-        return len - 1
-    end
-    return len
-end
-
-closesocket = function( socket )
-    _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
-    _readlistlen = removesocket( _readlist, socket, _readlistlen )
-    _socketlist[ socket ] = nil
-    socket:close( )
-    --mem_free( )
-end
-
-----------------------------------// PUBLIC //--
-
-addserver = function( listeners, port, addr, pattern, sslctx, maxconnections, startssl )    -- this function provides a way for other scripts to reg a server
-    local err
-    --out_put("server.lua: autossl on ", port, " is ", startssl)
-    if type( listeners ) ~= "table" then
-        err = "invalid listener table"
-    end
-    if not type( port ) == "number" or not ( port >= 0 and port <= 65535 ) then
-        err = "invalid port"
-    elseif _server[ port ] then
-        err =  "listeners on port '" .. port .. "' already exist"
-    elseif sslctx and not luasec then
-        err = "luasec not found"
-    end
-    if err then
-        out_error( "server.lua, port ", port, ": ", err )
-        return nil, err
-    end
-    addr = addr or "*"
-    local server, err = socket_bind( addr, port )
-    if err then
-        out_error( "server.lua, port ", port, ": ", err )
-        return nil, err
-    end
-    local handler, err = wrapserver( listeners, server, addr, port, pattern, sslctx, maxconnections, startssl )    -- wrap new server socket
-    if not handler then
-        server:close( )
-        return nil, err
-    end
-    server:settimeout( 0 )
-    _readlistlen = addsocket(_readlist, server, _readlistlen)
-    _server[ port ] = handler
-    _socketlist[ server ] = handler
-    out_put( "server.lua: new server listener on '", addr, ":", port, "'" )
-    return handler
-end
-
-getserver = function ( port )
-	return _server[ port ];
-end
-
-removeserver = function( port )
-    local handler = _server[ port ]
-    if not handler then
-        return nil, "no server found on port '" .. tostring( port ) .. "'"
-    end
-    handler.close( )
-    _server[ port ] = nil
-    return true
-end
-
-closeall = function( )
-    for _, handler in pairs( _socketlist ) do
-        handler.close( )
-        _socketlist[ _ ] = nil
-    end
-    _readlistlen = 0
-    _sendlistlen = 0
-    _timerlistlen = 0
-    _server = { }
-    _readlist = { }
-    _sendlist = { }
-    _timerlist = { }
-    _socketlist = { }
-    --mem_free( )
-end
-
-getsettings = function( )
-    return  _selecttimeout, _sleeptime, _maxsendlen, _maxreadlen, _checkinterval, _sendtimeout, _readtimeout, _cleanqueue, _maxclientsperserver, _maxsslhandshake
-end
-
-changesettings = function( new )
-    if type( new ) ~= "table" then
-        return nil, "invalid settings table"
-    end
-    _selecttimeout = tonumber( new.timeout ) or _selecttimeout
-    _sleeptime = tonumber( new.sleeptime ) or _sleeptime
-    _maxsendlen = tonumber( new.maxsendlen ) or _maxsendlen
-    _maxreadlen = tonumber( new.maxreadlen ) or _maxreadlen
-    _checkinterval = tonumber( new.checkinterval ) or _checkinterval
-    _sendtimeout = tonumber( new.sendtimeout ) or _sendtimeout
-    _readtimeout = tonumber( new.readtimeout ) or _readtimeout
-    _cleanqueue = new.cleanqueue
-    _maxclientsperserver = new._maxclientsperserver or _maxclientsperserver
-    _maxsslhandshake = new._maxsslhandshake or _maxsslhandshake
-    return true
-end
-
-addtimer = function( listener )
-    if type( listener ) ~= "function" then
-        return nil, "invalid listener function"
-    end
-    _timerlistlen = _timerlistlen + 1
-    _timerlist[ _timerlistlen ] = listener
-    return true
-end
-
-stats = function( )
-    return _readtraffic, _sendtraffic, _readlistlen, _sendlistlen, _timerlistlen
-end
-
-local dontstop = true; -- thinking about tomorrow, ...
-
-setquitting = function (quit)
-	dontstop = not quit;
-	return;
-end
-
-loop = function( )    -- this is the main loop of the program
-    while dontstop do
-        local read, write, err = socket_select( _readlist, _sendlist, _selecttimeout )
-        for i, socket in ipairs( write ) do    -- send data waiting in writequeues
-            local handler = _socketlist[ socket ]
-            if handler then
-                handler.sendbuffer( )
-            else
-                closesocket( socket )
-                out_put "server.lua: found no handler and closed socket (writelist)"    -- this should not happen
-            end
-        end
-        for i, socket in ipairs( read ) do    -- receive data
-            local handler = _socketlist[ socket ]
-            if handler then
-                handler.readbuffer( )
-            else
-                closesocket( socket )
-                out_put "server.lua: found no handler and closed socket (readlist)"    -- this can happen
-            end
-        end
-        for handler, err in pairs( _closelist ) do
-            handler.disconnect( )( handler, err )
-            handler.close( true )    -- forced disconnect
-        end
-        clean( _closelist )
-        _currenttime = os_time( )
-        if os_difftime( _currenttime - _timer ) >= 1 then
-            for i = 1, _timerlistlen do
-                _timerlist[ i ]( _currenttime )    -- fire timers
-            end
-            _timer = _currenttime
-        end
-        socket_sleep( _sleeptime )    -- wait some time
-        --collectgarbage( )
-    end
-    return "quitting"
-end
-
---// EXPERIMENTAL //--
-
-local wrapclient = function( socket, ip, serverport, listeners, pattern, sslctx, startssl )
-    local handler = wrapconnection( nil, listeners, socket, ip, serverport, "clientport", pattern, sslctx, startssl )
-    _socketlist[ socket ] = handler
-    _sendlistlen = addsocket(_sendlist, socket, _sendlistlen)
-    return handler, socket
-end
-
-local addclient = function( address, port, listeners, pattern, sslctx, startssl )
-    local client, err = luasocket.tcp( )
-    if err then
-        return nil, err
-    end
-    client:settimeout( 0 )
-    _, err = client:connect( address, port )
-    if err then    -- try again
-        local handler = wrapclient( client, address, port, listeners )
-    else
-        wrapconnection( nil, listeners, client, address, port, "clientport", pattern, sslctx, startssl )
-    end
-end
-
---// EXPERIMENTAL //--
-
-----------------------------------// BEGIN //--
-
-use "setmetatable" ( _socketlist, { __mode = "k" } )
-use "setmetatable" ( _readtimes, { __mode = "k" } )
-use "setmetatable" ( _writetimes, { __mode = "k" } )
-
-_timer = os_time( )
-_starttime = os_time( )
-
-addtimer( function( )
-        local difftime = os_difftime( _currenttime - _starttime )
-        if difftime > _checkinterval then
-            _starttime = _currenttime
-            for handler, timestamp in pairs( _writetimes ) do
-                if os_difftime( _currenttime - timestamp ) > _sendtimeout then
-                    --_writetimes[ handler ] = nil
-                    handler.disconnect( )( handler, "send timeout" )
-                    handler.close( true )    -- forced disconnect
-                end
-            end
-            for handler, timestamp in pairs( _readtimes ) do
-                if os_difftime( _currenttime - timestamp ) > _readtimeout then
-                    --_readtimes[ handler ] = nil
-                    handler.disconnect( )( handler, "read timeout" )
-                    handler.close( )    -- forced disconnect?
-                end
-            end
-        end
-    end
-)
-
-----------------------------------// PUBLIC INTERFACE //--
-
-return {
-
-    addclient = addclient,
-    wrapclient = wrapclient,
-    
-    loop = loop,
-    stats = stats,
-    closeall = closeall,
-    addtimer = addtimer,
-    addserver = addserver,
-    getserver = getserver,
-    getsettings = getsettings,
-    setquitting = setquitting,
-    removeserver = removeserver,
-    changesettings = changesettings,
-}
+
+local use_luaevent = 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
+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; 
diff -r 7cb6460b18d8 -r 141896297cea net/server_event.lua
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/net/server_event.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -0,0 +1,764 @@
+--[[
+
+
+			server.lua based on lua/libevent by blastbeat
+
+			notes:
+			-- when using luaevent, never register 2 or more EV_READ at one socket, same for EV_WRITE
+			-- you cant even register a new EV_READ/EV_WRITE callback inside another one
+			-- never call eventcallback:close( ) from inside eventcallback
+			-- to do some of the above, use timeout events or something what will called from outside
+			-- dont let garbagecollect eventcallbacks, as long they are running
+			-- when using luasec, there are 4 cases of timeout errors: wantread or wantwrite during reading or writing
+
+--]]
+
+
+local SCRIPT_NAME           = "server_event.lua"
+local SCRIPT_VERSION        = "0.05"
+local SCRIPT_AUTHOR         = "blastbeat"
+local LAST_MODIFIED         = "2009/11/20"
+
+local cfg = {
+	MAX_CONNECTIONS       = 100000,  -- max per server connections (use "ulimit -n" on *nix)
+	MAX_HANDSHAKE_ATTEMPS = 10,  -- attemps to finish ssl handshake
+	HANDSHAKE_TIMEOUT     = 1,  -- timout in seconds per handshake attemp
+	MAX_READ_LENGTH       = 1024 * 1024 * 1024 * 1024,  -- max bytes allowed to read from sockets
+	MAX_SEND_LENGTH       = 1024 * 1024 * 1024 * 1024,  -- max bytes size of write buffer (for writing on sockets)
+	ACCEPT_DELAY          = 10,  -- seconds to wait until the next attemp of a full server to accept
+	READ_TIMEOUT          = 60 * 30,  -- timeout in seconds for read data from socket
+	WRITE_TIMEOUT         = 30,  -- timeout in seconds for write data on socket
+	CONNECT_TIMEOUT       = 10,  -- timeout in seconds for connection attemps
+	CLEAR_DELAY           = 5,  -- seconds to wait for clearing interface list (and calling ondisconnect listeners) 
+	DEBUG                 = true,  -- show debug messages
+}
+
+local function use(x) return rawget(_G, x); end
+local print = use "print"
+local pcall = use "pcall"
+local ipairs = use "ipairs"
+local string = use "string"
+local select = use "select"
+local require = use "require"
+local tostring = use "tostring"
+local coroutine = use "coroutine"
+local setmetatable = use "setmetatable"
+
+local ssl = use "ssl"
+local socket = use "socket"
+
+local log = require ("util.logger").init("socket")
+
+local function debug(...)
+	return log("debug", ("%s "):rep(select('#', ...)), ...)
+end
+local vdebug = debug;
+
+local bitor = ( function( ) -- thx Rici Lake
+	local hasbit = function( x, p )
+		return x % ( p + p ) >= p
+	end
+	return function( x, y ) 
+		local p = 1
+		local z = 0
+		local limit = x > y and x or y
+		while p <= limit do 
+			if hasbit( x, p ) or hasbit( y, p ) then
+				z = z + p
+			end
+			p = p + p
+		end
+		return z
+	end
+end )( )
+
+local event = require "luaevent.core"
+local base = event.new( )
+local EV_READ = event.EV_READ
+local EV_WRITE = event.EV_WRITE
+local EV_TIMEOUT = event.EV_TIMEOUT
+
+local EV_READWRITE = bitor( EV_READ, EV_WRITE )
+
+local interfacelist = ( function( )  -- holds the interfaces for sockets
+	local array = { }
+	local len = 0
+	return function( method, arg )
+		if "add" == method then
+			len = len + 1
+			array[ len ] = arg
+			arg:_position( len )
+			return len
+		elseif "delete" == method then
+			if len <= 0 then
+				return nil, "array is already empty"
+			end
+			local position = arg:_position()  -- get position in array
+			if position ~= len then
+				local interface = array[ len ]  -- get last interface
+				array[ position ] = interface  -- copy it into free position
+				array[ len ] = nil  -- free last position
+				interface:_position( position )  -- set new position in array
+			else  -- free last position
+				array[ len ] = nil
+			end
+			len = len - 1
+			return len    
+		else
+			return array
+		end
+	end
+end )( )
+
+-- Client interface methods
+local interface_mt
+do
+	interface_mt = {}; interface_mt.__index = interface_mt;
+	
+	local addevent = base.addevent
+	local coroutine_wrap, coroutine_yield = coroutine.wrap,coroutine.yield
+	local string_len = string.len
+	
+	-- Private methods
+	function interface_mt:_position(new_position)
+			self.position = new_position or self.position
+			return self.position;
+	end
+	function interface_mt:_close() -- regs event to start self:_destroy()
+			local callback = function( )
+				self:_destroy();
+				self.eventclose = nil
+				return -1
+			end
+			self.eventclose = addevent( base, nil, EV_TIMEOUT, callback, 0 )
+			return true
+	end
+	
+	function interface_mt:_start_connection(plainssl) -- should be called from addclient
+			local callback = function( event )
+				if EV_TIMEOUT == event then  -- timout during connection
+					self.fatalerror = "connection timeout"
+					self.listener.ontimeout( self )  -- call timeout listener
+					self:_close()
+					debug( "new connection failed. id:", self.id, "error:", self.fatalerror )
+				else
+					if plainssl then  -- start ssl session
+						self:_start_ssl( self.listener.onconnect )
+					else  -- normal connection
+						self:_start_session( self.listener.onconnect )
+					end
+					debug( "new connection established. id:", self.id )
+				end
+				self.eventconnect = nil
+				return -1
+			end
+			self.eventconnect = addevent( base, self.conn, EV_WRITE, callback, cfg.CONNECT_TIMEOUT )
+			return true
+	end
+	function interface_mt:_start_session(onconnect) -- new session, for example after startssl
+		if self.type == "client" then
+			local callback = function( )
+				self:_lock( false,  false, false )
+				--vdebug( "start listening on client socket with id:", self.id )      
+				self.eventread = addevent( base, self.conn, EV_READ, self.readcallback, cfg.READ_TIMEOUT )  -- register callback
+				self:onconnect()
+				self.eventsession = nil
+				return -1
+			end
+			self.eventsession = addevent( base, nil, EV_TIMEOUT, callback, 0 )
+		else
+			self:_lock( false )
+			--vdebug( "start listening on server socket with id:", self.id )
+			self.eventread = addevent( base, self.conn, EV_READ, self.readcallback )  -- register callback
+		end
+		return true
+	end
+	function interface_mt:_start_ssl(arg) -- old socket will be destroyed, therefore we have to close read/write events first
+			--vdebug( "starting ssl session with client id:", self.id )
+			local _
+			_ = self.eventread and self.eventread:close( )  -- close events; this must be called outside of the event callbacks!
+			_ = self.eventwrite and self.eventwrite:close( )
+			self.eventread, self.eventwrite = nil, nil
+			local err
+			self.conn, err = ssl.wrap( self.conn, self._sslctx )
+			if err then
+				self.fatalerror = err
+				self.conn = nil  -- cannot be used anymore
+				if "onconnect" == arg then
+					self.ondisconnect = nil  -- dont call this when client isnt really connected
+				end
+				self:_close()
+				debug( "fatal error while ssl wrapping:", err )
+				return false
+			end
+			self.conn:settimeout( 0 )  -- set non blocking
+			local handshakecallback = coroutine_wrap(
+				function( event )
+					local _, err
+					local attempt = 0
+					local maxattempt = cfg.MAX_HANDSHAKE_ATTEMPS
+					while attempt < 1000 do  -- no endless loop
+						attempt = attempt + 1
+						debug( "ssl handshake of client with id:"..tostring(self).."attemp:"..attempt )
+						if attempt > maxattempt then
+							self.fatalerror = "max handshake attemps exceeded"
+						elseif EV_TIMEOUT == event then
+							self.fatalerror = "timeout during handshake"
+						else
+							_, err = self.conn:dohandshake( )
+							if not err then
+								self:_lock( false, false, false )  -- unlock the interface; sending, closing etc allowed
+								self.send = self.conn.send  -- caching table lookups with new client object
+								self.receive = self.conn.receive
+								local onsomething
+								if "onconnect" == arg then  -- trigger listener
+									onsomething = self.onconnect
+								else
+									onsomething = self.onsslconnection
+								end
+								self:_start_session( onsomething )
+								debug( "ssl handshake done" )
+								self.eventhandshake = nil
+								return -1
+							end
+							debug( "error during ssl handshake:", err ) 
+							if err == "wantwrite" then
+								event = EV_WRITE
+							elseif err == "wantread" then
+								event = EV_READ
+							else
+								self.fatalerror = err
+							end            
+						end
+						if self.fatalerror then
+							if "onconnect" == arg then
+								self.ondisconnect = nil  -- dont call this when client isnt really connected
+							end
+							self:_close()
+							debug( "handshake failed because:", self.fatalerror )
+							self.eventhandshake = nil
+							return -1
+						end
+						event = coroutine_yield( event, cfg.HANDSHAKE_TIMEOUT )  -- yield this monster...
+					end
+				end
+			)
+			debug "starting handshake..."
+			self:_lock( false, true, true )  -- unlock read/write events, but keep interface locked 
+			self.eventhandshake = addevent( base, self.conn, EV_READWRITE, handshakecallback, cfg.HANDSHAKE_TIMEOUT )
+			return true
+	end
+	function interface_mt:_destroy()  -- close this interface + events and call last listener
+			debug( "closing client with id:", self.id )
+			self:_lock( true, true, true )  -- first of all, lock the interface to avoid further actions
+			local _
+			_ = self.eventread and self.eventread:close( )  -- close events; this must be called outside of the event callbacks!
+			if self.type == "client" then
+				_ = self.eventwrite and self.eventwrite:close( )
+				_ = self.eventhandshake and self.eventhandshake:close( )
+				_ = self.eventstarthandshake and self.eventstarthandshake:close( )
+				_ = self.eventconnect and self.eventconnect:close( )
+				_ = self.eventsession and self.eventsession:close( )
+				_ = self.eventwritetimeout and self.eventwritetimeout:close( )
+				_ = self.eventreadtimeout and self.eventreadtimeout:close( )
+				_ = self.ondisconnect and self:ondisconnect( self.fatalerror )  -- call ondisconnect listener (wont be the case if handshake failed on connect)
+				_ = self.conn and self.conn:close( ) -- close connection, must also be called outside of any socket registered events!
+				self._server:counter(-1);
+				self.eventread, self.eventwrite = nil, nil
+				self.eventstarthandshake, self.eventhandshake, self.eventclose = nil, nil, nil
+				self.readcallback, self.writecallback = nil, nil
+			else
+				self.conn:close( )
+				self.eventread, self.eventclose = nil, nil
+				self.interface, self.readcallback = nil, nil
+			end
+			interfacelist( "delete", self )
+			return true
+	end
+	
+	function interface_mt:_lock(nointerface, noreading, nowriting)  -- lock or unlock this interface or events
+			self.nointerface, self.noreading, self.nowriting = nointerface, noreading, nowriting
+			return nointerface, noreading, nowriting
+	end
+
+	function interface_mt:counter(c)
+		if c then
+			self._connections = self._connections - c
+		end
+		return self._connections
+	end
+	
+	-- Public methods
+	function interface_mt:write(data)
+		if self.nowriting then return nil, "locked" end
+		--vdebug( "try to send data to client, id/data:", self.id, data )
+		data = tostring( data )
+		local len = string_len( data )
+		local total = len + self.writebufferlen
+		if total > cfg.MAX_SEND_LENGTH then  -- check buffer length
+			local err = "send buffer exceeded"
+			debug( "error:", err )  -- to much, check your app
+			return nil, err
+		end 
+		self.writebuffer = self.writebuffer .. data -- new buffer
+		self.writebufferlen = total
+		if not self.eventwrite then  -- register new write event
+			--vdebug( "register new write event" )
+			self.eventwrite = addevent( base, self.conn, EV_WRITE, self.writecallback, cfg.WRITE_TIMEOUT )
+		end
+		return true
+	end
+	function interface_mt:close(now)
+		if self.nointerface then return nil, "locked"; end
+		debug( "try to close client connection with id:", self.id )
+		if self.type == "client" then
+			self.fatalerror = "client to close"
+			if ( not self.eventwrite ) or now then  -- try to close immediately
+				self:_lock( true, true, true )
+				self:_close()
+				return true
+			else  -- wait for incomplete write request
+				self:_lock( true, true, false )
+				debug "closing delayed until writebuffer is empty"
+				return nil, "writebuffer not empty, waiting"
+			end
+		else
+			debug( "try to close server with id:", self.id, "args:", now )
+			self.fatalerror = "server to close"
+			self:_lock( true )
+			local count = 0
+			for _, item in ipairs( interfacelist( ) ) do
+				if ( item.type ~= "server" ) and ( item._server == self ) then  -- client/server match
+					if item:close( now ) then  -- writebuffer was empty
+						count = count + 1
+					end
+				end
+			end
+			local timeout = 0  -- dont wait for unfinished writebuffers of clients...
+			if not now then
+				timeout = cfg.WRITE_TIMEOUT  -- ...or wait for it
+			end
+			self:_close( timeout )  -- add new event to remove the server interface
+			debug( "seconds remained until server is closed:", timeout )
+			return count  -- returns finished clients with empty writebuffer
+		end
+	end
+	
+	function interface_mt:server()
+		return self._server or self;
+	end
+	
+	function interface_mt:port()
+		return self._port
+	end
+	
+	function interface_mt:ip()
+		return self._ip
+	end
+	
+	function interface_mt:ssl()
+		return self._usingssl
+	end
+
+	function interface_mt:type()
+		return self._type or "client"
+	end
+	
+	function interface_mt:connections()
+		return self._connections
+	end
+	
+	function interface_mt:address()
+		return self.addr
+	end
+	
+	function interface_mt:set_sslctx(sslctx)
+		self._sslctx = sslctx;
+	end
+	
+	function interface_mt:starttls()
+		debug( "try to start ssl at client id:", self.id )
+		local err
+		if not self._sslctx then  -- no ssl available
+			err = "no ssl context available"
+		elseif self._usingssl then  -- startssl was already called
+			err = "ssl already active"
+		end
+		if err then
+			debug( "error:", err )
+			return nil, err      
+		end
+		self._usingssl = true
+		self.startsslcallback = function( )  -- we have to start the handshake outside of a read/write event
+			self.startsslcallback = nil
+			self:_start_ssl();
+			self.eventstarthandshake = nil
+			return -1
+		end
+		if not self.eventwrite then
+			self:_lock( true, true, true )  -- lock the interface, to not disturb the handshake
+			self.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, self.startsslcallback, 0 )  -- add event to start handshake
+		else  -- wait until writebuffer is empty
+			self:_lock( true, true, false )
+			debug "ssl session delayed until writebuffer is empty..."
+		end
+		return true
+	end
+	
+	function interface_mt.onconnect()
+	end
+end			
+
+-- End of client interface methods
+
+local handleclient;
+do
+	local string_sub = string.sub  -- caching table lookups
+	local string_len = string.len
+	local addevent = base.addevent
+	local coroutine_wrap = coroutine.wrap
+	local socket_gettime = socket.gettime
+	local coroutine_yield = coroutine.yield
+	function handleclient( client, ip, port, server, pattern, listener, _, sslctx )  -- creates an client interface
+		--vdebug("creating client interfacce...")
+		local interface = {
+			type = "client";
+			conn = client;
+			currenttime = socket_gettime( );  -- safe the origin
+			writebuffer = "";  -- writebuffer
+			writebufferlen = 0;  -- length of writebuffer
+			send = client.send;  -- caching table lookups
+			receive = client.receive;
+			onconnect = listener.onconnect;  -- will be called when client disconnects
+			ondisconnect = listener.ondisconnect;  -- will be called when client disconnects
+			onincoming = listener.onincoming;  -- will be called when client sends data
+			eventread = false, eventwrite = false, eventclose = false,
+			eventhandshake = false, eventstarthandshake = false;  -- event handler
+			eventconnect = false, eventsession = false;  -- more event handler...
+			eventwritetimeout = false;  -- even more event handler...
+			eventreadtimeout = false;
+			fatalerror = false;  -- error message
+			writecallback = false;  -- will be called on write events
+			readcallback = false;  -- will be called on read events
+			nointerface = true;  -- lock/unlock parameter of this interface
+			noreading = false, nowriting = false;  -- locks of the read/writecallback
+			startsslcallback = false;  -- starting handshake callback
+			position = false;  -- position of client in interfacelist
+			
+			-- Properties
+			_ip = ip, _port = port, _server = server, _pattern = pattern,
+			_sslctx = sslctx; -- parameters
+			_usingssl = false;  -- client is using ssl;
+		}
+		interface.id = tostring(interface):match("%x+$");
+		interface.writecallback = function( event )  -- called on write events
+			--vdebug( "new client write event, id/ip/port:", interface, ip, port )
+			if interface.nowriting or ( interface.fatalerror and ( "client to close" ~= interface.fatalerror ) ) then  -- leave this event
+				--vdebug( "leaving this event because:", interface.nowriting or interface.fatalerror )
+				interface.eventwrite = false
+				return -1
+			end
+			if EV_TIMEOUT == event then  -- took too long to write some data to socket -> disconnect
+				interface.fatalerror = "timeout during writing"
+				debug( "writing failed:", interface.fatalerror ) 
+				interface:_close()
+				interface.eventwrite = false
+				return -1
+			else  -- can write :)
+				if interface._usingssl then  -- handle luasec
+					if interface.eventreadtimeout then  -- we have to read first
+						local ret = interface.readcallback( )  -- call readcallback
+						--vdebug( "tried to read in writecallback, result:", ret )
+					end
+					if interface.eventwritetimeout then  -- luasec only
+						interface.eventwritetimeout:close( )  -- first we have to close timeout event which where regged after a wantread error
+						interface.eventwritetimeout = false
+					end
+				end
+				local succ, err, byte = interface.conn:send( interface.writebuffer, 1, interface.writebufferlen )
+				--vdebug( "write data:", interface.writebuffer, "error:", err, "part:", byte )
+				if succ then  -- writing succesful
+					interface.writebuffer = ""
+					interface.writebufferlen = 0
+					if interface.fatalerror then
+						debug "closing client after writing"
+						interface:_close()  -- close interface if needed
+					elseif interface.startsslcallback then  -- start ssl connection if needed
+						debug "starting ssl handshake after writing"
+						interface.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, interface.startsslcallback, 0 )
+					elseif interface.eventreadtimeout then
+						return EV_WRITE, EV_TIMEOUT
+					end
+					interface.eventwrite = nil
+					return -1
+				elseif byte then  -- want write again
+					--vdebug( "writebuffer is not empty:", err )
+					interface.writebuffer = string_sub( interface.writebuffer, byte + 1, interface.writebufferlen )  -- new buffer
+					interface.writebufferlen = interface.writebufferlen - byte            
+					if "wantread" == err then  -- happens only with luasec
+						local callback = function( )
+							interface:_close()
+							interface.eventwritetimeout = nil
+							return evreturn, evtimeout
+						end
+						interface.eventwritetimeout = addevent( base, nil, EV_TIMEOUT, callback, cfg.WRITE_TIMEOUT )  -- reg a new timeout event
+						debug( "wantread during write attemp, reg it in readcallback but dont know what really happens next..." )
+						-- hopefully this works with luasec; its simply not possible to use 2 different write events on a socket in luaevent
+						return -1
+					end
+					return EV_WRITE, cfg.WRITE_TIMEOUT 
+				else  -- connection was closed during writing or fatal error
+					interface.fatalerror = err or "fatal error"
+					debug( "connection failed in write event:", interface.fatalerror ) 
+					interface:_close()
+					interface.eventwrite = nil
+					return -1
+				end
+			end
+		end
+		
+		interface.readcallback = function( event )  -- called on read events
+			--vdebug( "new client read event, id/ip/port:", interface, ip, port )
+			if interface.noreading or interface.fatalerror then  -- leave this event
+				--vdebug( "leaving this event because:", interface.noreading or interface.fatalerror )
+				interface.eventread = nil
+				return -1
+			end
+			if EV_TIMEOUT == event then  -- took too long to get some data from client -> disconnect
+				interface.fatalerror = "timeout during receiving"
+				debug( "connection failed:", interface.fatalerror ) 
+				interface:_close()
+				interface.eventread = nil
+				return -1
+			else -- can read
+				if interface._usingssl then  -- handle luasec
+					if interface.eventwritetimeout then  -- ok, in the past writecallback was regged
+						local ret = interface.writecallback( )  -- call it
+						--vdebug( "tried to write in readcallback, result:", ret )
+					end
+					if interface.eventreadtimeout then
+						interface.eventreadtimeout:close( )
+						interface.eventreadtimeout = nil
+					end
+				end
+				local buffer, err, part = interface.conn:receive( pattern )  -- receive buffer with "pattern"
+				--vdebug( "read data:", tostring(buffer), "error:", tostring(err), "part:", tostring(part) )        
+				buffer = buffer or part or ""
+				local len = string_len( buffer )
+				if len > cfg.MAX_READ_LENGTH then  -- check buffer length
+					interface.fatalerror = "receive buffer exceeded"
+					debug( "fatal error:", interface.fatalerror )
+					interface:_close()
+					interface.eventread = nil
+					return -1
+				end
+				if err and ( err ~= "timeout" and err ~= "wantread" ) then
+					if "wantwrite" == err then -- need to read on write event
+						if not interface.eventwrite then  -- register new write event if needed
+							interface.eventwrite = addevent( base, interface.conn, EV_WRITE, interface.writecallback, cfg.WRITE_TIMEOUT )
+						end
+						interface.eventreadtimeout = addevent( base, nil, EV_TIMEOUT,
+							function( )
+								interface:_close()
+							end, cfg.READ_TIMEOUT
+						)             
+						debug( "wantwrite during read attemp, reg it in writecallback but dont know what really happens next..." )
+						-- to be honest i dont know what happens next, if it is allowed to first read, the write etc...
+					else  -- connection was closed or fatal error            
+						interface.fatalerror = err
+						debug( "connection failed in read event:", interface.fatalerror ) 
+						interface:_close()
+						interface.eventread = nil
+						return -1
+					end
+				end
+				interface.onincoming( interface, buffer, err )  -- send new data to listener
+				return EV_READ, cfg.READ_TIMEOUT
+			end
+		end
+
+		client:settimeout( 0 )  -- set non blocking
+		setmetatable(interface, interface_mt)
+		interfacelist( "add", interface )  -- add to interfacelist
+		return interface
+	end
+end
+
+local handleserver
+do
+	function handleserver( server, addr, port, pattern, listener, sslctx, startssl )  -- creates an server interface
+		debug "creating server interface..."
+		local interface = {
+			_connections = 0;
+			
+			conn = server;
+			onconnect = listener.onconnect;  -- will be called when new client connected
+			eventread = false;  -- read event handler
+			eventclose = false; -- close event handler
+			readcallback = false; -- read event callback
+			fatalerror = false; -- error message
+			nointerface = true;  -- lock/unlock parameter
+		}
+		interface.id = tostring(interface):match("%x+$");
+		interface.readcallback = function( event )  -- server handler, called on incoming connections
+			--vdebug( "server can accept, id/addr/port:", interface, addr, port )
+			if interface.fatalerror then
+				--vdebug( "leaving this event because:", self.fatalerror )
+				interface.eventread = nil
+				return -1
+			end
+			local delay = cfg.ACCEPT_DELAY
+			if EV_TIMEOUT == event then
+				if interface._connections >= cfg.MAX_CONNECTIONS then  -- check connection count
+					debug( "to many connections, seconds to wait for next accept:", delay )
+					return EV_TIMEOUT, delay  -- timeout...
+				else
+					return EV_READ  -- accept again
+				end
+			end
+			--vdebug("max connection check ok, accepting...")
+			local client, err = server:accept()    -- try to accept; TODO: check err
+			while client do
+				if interface._connections >= cfg.MAX_CONNECTIONS then
+					client:close( )  -- refuse connection
+					debug( "maximal connections reached, refuse client connection; accept delay:", delay )
+					return EV_TIMEOUT, delay  -- delay for next accept attemp
+				end
+				local ip, port = client:getpeername( )
+				interface._connections = interface._connections + 1  -- increase connection count
+				local clientinterface = handleclient( client, ip, port, interface, pattern, listener, nil, sslctx )
+				--vdebug( "client id:", clientinterface, "startssl:", startssl )
+				if startssl then
+					clientinterface:_start_ssl( clientinterface.onconnect )
+				else
+					clientinterface:_start_session( clientinterface.onconnect )
+				end
+				debug( "accepted incoming client connection from:", ip, port )
+				client, err = server:accept()    -- try to accept again
+			end
+			return EV_READ
+		end
+		
+		server:settimeout( 0 )
+		setmetatable(interface, interface_mt)
+		interfacelist( "add", interface )
+		interface:_start_session()
+		return interface
+	end
+end
+
+local addserver = ( function( )
+	return function( addr, port, listener, pattern, sslcfg, startssl )  -- TODO: check arguments
+		--vdebug( "creating new tcp server with following parameters:", addr or "nil", port or "nil", sslcfg or "nil", startssl or "nil")
+		local server, err = socket.bind( addr, port, cfg.ACCEPT_QUEUE )  -- create server socket
+		if not server then
+			debug( "creating server socket failed because:", err )
+			return nil, err
+		end
+		local sslctx
+		if sslcfg then
+			if not ssl then
+				debug "fatal error: luasec not found"
+				return nil, "luasec not found"
+			end
+			sslctx, err = ssl.newcontext( sslcfg )
+			if err then
+				debug( "error while creating new ssl context for server socket:", err )
+				return nil, err
+			end
+		end      
+		local interface = handleserver( server, addr, port, pattern, listener, sslctx, startssl )  -- new server handler
+		debug( "new server created with id:", tostring(interface))
+		return interface
+	end
+end )( )
+
+local wrapclient = ( function( )
+	return function( client, addr, serverport, listener, pattern, localaddr, localport, sslcfg, startssl )
+		debug( "try to connect to:", addr, serverport, "with parameters:", pattern, localaddr, localport, sslcfg, startssl )
+		local sslctx
+		if sslcfg then  -- handle ssl/new context
+			if not ssl then
+				debug "need luasec, but not available" 
+				return nil, "luasec not found"
+			end
+			sslctx, err = ssl.newcontext( sslcfg )
+			if err then
+				debug( "cannot create new ssl context:", err )
+				return nil, err
+			end
+		end
+	end
+end )( )
+
+local addclient = ( function( )
+	return function( addr, serverport, listener, pattern, localaddr, localport, sslcfg, startssl )
+		local client, err = socket.tcp()  -- creating new socket
+		if not client then
+			debug( "cannot create socket:", err ) 
+			return nil, err
+		end
+		client:settimeout( 0 )  -- set nonblocking
+		if localaddr then
+			local res, err = client:bind( localaddr, localport, -1 )
+			if not res then
+				debug( "cannot bind client:", err )
+				return nil, err
+			end
+		end
+		local res, err = client:connect( addr, serverport )  -- connect
+		if res or ( err == "timeout" ) then
+			local ip, port = client:getsockname( )
+			local server = function( )
+				return nil, "this is a dummy server interface"
+			end
+			local interface = handleclient( client, ip, port, server, pattern, listener, sslctx )
+			interface:_start_connection( startssl )
+			debug( "new connection id:", interface )
+			return interface, err
+		else
+			debug( "new connection failed:", err )
+			return nil, err
+		end
+		return wrapclient( client, addr, serverport, listener, pattern, localaddr, localport, sslcfg, startssl )    
+	end
+end )( )
+
+local loop = function( )  -- starts the event loop
+	return base:loop( )
+end
+
+local newevent = ( function( )
+	local add = base.addevent
+	return function( ... )
+		return add( base, ... )
+	end
+end )( )
+
+local closeallservers = function( arg )
+	for _, item in ipairs( interfacelist( ) ) do
+		if item "type" == "server" then
+			item( "close", arg )
+		end
+	end
+end
+
+return {
+
+	cfg = cfg,
+	base = base,
+	loop = loop,
+	event = event,
+	event_base = base,
+	addevent = newevent,
+	addserver = addserver,
+	addclient = addclient,
+	wrapclient = wrapclient,
+	closeallservers = closeallservers,
+
+	__NAME = SCRIPT_NAME,
+	__DATE = LAST_MODIFIED,
+	__AUTHOR = SCRIPT_AUTHOR,
+	__VERSION = SCRIPT_VERSION,
+
+}
diff -r 7cb6460b18d8 -r 141896297cea net/server_select.lua
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/net/server_select.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -0,0 +1,914 @@
+-- 
+-- server.lua by blastbeat of the luadch project
+-- Re-used here under the MIT/X Consortium License
+-- 
+-- Modifications (C) 2008-2009 Matthew Wild, Waqas Hussain
+--
+
+-- // wrapping luadch stuff // --
+
+local use = function( what )
+    return _G[ what ]
+end
+local clean = function( tbl )
+    for i, k in pairs( tbl ) do
+        tbl[ i ] = nil
+    end
+end
+
+local log, table_concat = require ("util.logger").init("socket"), table.concat;
+local out_put = function (...) return log("debug", table_concat{...}); end
+local out_error = function (...) return log("warn", table_concat{...}); end
+local mem_free = collectgarbage
+
+----------------------------------// DECLARATION //--
+
+--// constants //--
+
+local STAT_UNIT = 1    -- byte
+
+--// lua functions //--
+
+local type = use "type"
+local pairs = use "pairs"
+local ipairs = use "ipairs"
+local tostring = use "tostring"
+local collectgarbage = use "collectgarbage"
+
+--// lua libs //--
+
+local os = use "os"
+local table = use "table"
+local string = use "string"
+local coroutine = use "coroutine"
+
+--// lua lib methods //--
+
+local os_time = os.time
+local os_difftime = os.difftime
+local table_concat = table.concat
+local table_remove = table.remove
+local string_len = string.len
+local string_sub = string.sub
+local coroutine_wrap = coroutine.wrap
+local coroutine_yield = coroutine.yield
+
+--// extern libs //--
+
+local luasec = select( 2, pcall( require, "ssl" ) )
+local luasocket = require "socket"
+
+--// extern lib methods //--
+
+local ssl_wrap = ( luasec and luasec.wrap )
+local socket_bind = luasocket.bind
+local socket_sleep = luasocket.sleep
+local socket_select = luasocket.select
+local ssl_newcontext = ( luasec and luasec.newcontext )
+
+--// functions //--
+
+local id
+local loop
+local stats
+local idfalse
+local addtimer
+local closeall
+local addserver
+local getserver
+local wrapserver
+local getsettings
+local closesocket
+local removesocket
+local removeserver
+local changetimeout
+local wrapconnection
+local changesettings
+
+--// tables //--
+
+local _server
+local _readlist
+local _timerlist
+local _sendlist
+local _socketlist
+local _closelist
+local _readtimes
+local _writetimes
+
+--// simple data types //--
+
+local _
+local _readlistlen
+local _sendlistlen
+local _timerlistlen
+
+local _sendtraffic
+local _readtraffic
+
+local _selecttimeout
+local _sleeptime
+
+local _starttime
+local _currenttime
+
+local _maxsendlen
+local _maxreadlen
+
+local _checkinterval
+local _sendtimeout
+local _readtimeout
+
+local _cleanqueue
+
+local _timer
+
+local _maxclientsperserver
+
+----------------------------------// DEFINITION //--
+
+_server = { }    -- key = port, value = table; list of listening servers
+_readlist = { }    -- array with sockets to read from
+_sendlist = { }    -- arrary with sockets to write to
+_timerlist = { }    -- array of timer functions
+_socketlist = { }    -- key = socket, value = wrapped socket (handlers)
+_readtimes = { }   -- key = handler, value = timestamp of last data reading
+_writetimes = { }   -- key = handler, value = timestamp of last data writing/sending
+_closelist = { }    -- handlers to close
+
+_readlistlen = 0    -- length of readlist
+_sendlistlen = 0    -- length of sendlist
+_timerlistlen = 0    -- lenght of timerlist
+
+_sendtraffic = 0    -- some stats
+_readtraffic = 0
+
+_selecttimeout = 1    -- timeout of socket.select
+_sleeptime = 0    -- time to wait at the end of every loop
+
+_maxsendlen = 51000 * 1024    -- max len of send buffer
+_maxreadlen = 25000 * 1024    -- max len of read buffer
+
+_checkinterval = 1200000    -- interval in secs to check idle clients
+_sendtimeout = 60000    -- allowed send idle time in secs
+_readtimeout = 6 * 60 * 60    -- allowed read idle time in secs
+
+_cleanqueue = false    -- clean bufferqueue after using
+
+_maxclientsperserver = 1000
+
+_maxsslhandshake = 30 -- max handshake round-trips
+----------------------------------// PRIVATE //--
+
+wrapserver = function( listeners, socket, ip, serverport, pattern, sslctx, maxconnections, startssl )    -- this function wraps a server
+
+    maxconnections = maxconnections or _maxclientsperserver
+
+    local connections = 0
+
+    local dispatch, disconnect = listeners.onincoming, listeners.ondisconnect
+
+    local err
+
+    local ssl = false
+
+    if sslctx then
+        ssl = true
+        if not ssl_newcontext then
+            out_error "luasec not found"
+            ssl = false
+        end
+        if type( sslctx ) ~= "table" then
+            out_error "server.lua: wrong server sslctx"
+            ssl = false
+        end
+        local ctx;
+        ctx, err = ssl_newcontext( sslctx )
+        if not ctx then
+            err = err or "wrong sslctx parameters"
+            local file;
+            file = err:match("^error loading (.-) %(");
+            if file then
+            	if file == "private key" then
+            		file = sslctx.key or "your private key";
+            	elseif file == "certificate" then
+            		file = sslctx.certificate or "your certificate file";
+            	end
+	        local reason = err:match("%((.+)%)$") or "some reason";
+	        if reason == "Permission denied" then
+	        	reason = "Check that the permissions allow Prosody to read this file.";
+	        elseif reason == "No such file or directory" then
+	        	reason = "Check that the path is correct, and the file exists.";
+	        elseif reason == "system lib" then
+	        	reason = "Previous error (see logs), or other system error.";
+	        else
+	        	reason = "Reason: "..tostring(reason or "unknown"):lower();
+	        end
+	        log("error", "SSL/TLS: Failed to load %s: %s", file, reason);
+	    else
+                log("error", "SSL/TLS: Error initialising for port %d: %s", serverport, err );
+            end
+            ssl = false
+        end
+        sslctx = ctx;
+    end
+    if not ssl then
+      sslctx = false;
+      if startssl then
+         log("error", "Failed to listen on port %d due to SSL/TLS to SSL/TLS initialisation errors (see logs)", serverport )
+         return nil, "Cannot start ssl,  see log for details"
+       end
+    end
+
+    local accept = socket.accept
+
+    --// public methods of the object //--
+
+    local handler = { }
+
+    handler.shutdown = function( ) end
+
+    handler.ssl = function( )
+        return ssl
+    end
+    handler.sslctx = function( )
+        return sslctx
+    end
+    handler.remove = function( )
+        connections = connections - 1
+    end
+    handler.close = function( )
+        for _, handler in pairs( _socketlist ) do
+            if handler.serverport == serverport then
+                handler.disconnect( handler, "server closed" )
+                handler:close( true )
+            end
+        end
+        socket:close( )
+        _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
+        _readlistlen = removesocket( _readlist, socket, _readlistlen )
+        _socketlist[ socket ] = nil
+        handler = nil
+        socket = nil
+        --mem_free( )
+        out_put "server.lua: closed server handler and removed sockets from list"
+    end
+    handler.ip = function( )
+        return ip
+    end
+    handler.serverport = function( )
+        return serverport
+    end
+    handler.socket = function( )
+        return socket
+    end
+    handler.readbuffer = function( )
+        if connections > maxconnections then
+            out_put( "server.lua: refused new client connection: server full" )
+            return false
+        end
+        local client, err = accept( socket )    -- try to accept
+        if client then
+            local ip, clientport = client:getpeername( )
+            client:settimeout( 0 )
+            local handler, client, err = wrapconnection( handler, listeners, client, ip, serverport, clientport, pattern, sslctx, startssl )    -- wrap new client socket
+            if err then    -- error while wrapping ssl socket
+                return false
+            end
+            connections = connections + 1
+            out_put( "server.lua: accepted new client connection from ", tostring(ip), ":", tostring(clientport), " to ", tostring(serverport))
+            return dispatch( handler )
+        elseif err then    -- maybe timeout or something else
+            out_put( "server.lua: error with new client connection: ", tostring(err) )
+            return false
+        end
+    end
+    return handler
+end
+
+wrapconnection = function( server, listeners, socket, ip, serverport, clientport, pattern, sslctx, startssl )    -- this function wraps a client to a handler object
+
+    socket:settimeout( 0 )
+
+    --// local import of socket methods //--
+
+    local send
+    local receive
+    local shutdown
+
+    --// private closures of the object //--
+
+    local ssl
+
+    local dispatch = listeners.onincoming
+    local status = listeners.status
+    local disconnect = listeners.ondisconnect
+
+    local bufferqueue = { }    -- buffer array
+    local bufferqueuelen = 0    -- end of buffer array
+
+    local toclose
+    local fatalerror
+    local needtls
+
+    local bufferlen = 0
+
+    local noread = false
+    local nosend = false
+
+    local sendtraffic, readtraffic = 0, 0
+
+    local maxsendlen = _maxsendlen
+    local maxreadlen = _maxreadlen
+
+    --// public methods of the object //--
+
+    local handler = bufferqueue    -- saves a table ^_^
+
+    handler.dispatch = function( )
+        return dispatch
+    end
+    handler.disconnect = function( )
+        return disconnect
+    end
+    handler.setlistener = function( self, listeners )
+        dispatch = listeners.onincoming
+        disconnect = listeners.ondisconnect
+    end
+    handler.getstats = function( )
+        return readtraffic, sendtraffic
+    end
+    handler.ssl = function( )
+        return ssl
+    end
+    handler.sslctx = function ( )
+        return sslctx
+    end
+    handler.send = function( _, data, i, j )
+        return send( socket, data, i, j )
+    end
+    handler.receive = function( pattern, prefix )
+        return receive( socket, pattern, prefix )
+    end
+    handler.shutdown = function( pattern )
+        return shutdown( socket, pattern )
+    end
+    handler.close = function( forced )
+        if not handler then return true; end
+        _readlistlen = removesocket( _readlist, socket, _readlistlen )
+        _readtimes[ handler ] = nil
+        if bufferqueuelen ~= 0 then
+            if not ( forced or fatalerror ) then
+                handler.sendbuffer( )
+                if bufferqueuelen ~= 0 then   -- try again...
+                    if handler then
+                        handler.write = nil    -- ... but no further writing allowed
+                    end
+                    toclose = true
+                    return false
+                end
+            else
+                send( socket, table_concat( bufferqueue, "", 1, bufferqueuelen ), 1, bufferlen )    -- forced send
+            end
+        end
+        if socket then
+          _ = shutdown and shutdown( socket )
+          socket:close( )
+          _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
+          _socketlist[ socket ] = nil
+          socket = nil
+        else
+          out_put "server.lua: socket already closed"
+        end
+        if handler then
+            _writetimes[ handler ] = nil
+            _closelist[ handler ] = nil
+            handler = nil
+        end
+	if server then
+		server.remove( )
+	end
+        out_put "server.lua: closed client handler and removed socket from list"
+        return true
+    end
+    handler.ip = function( )
+        return ip
+    end
+    handler.serverport = function( )
+        return serverport
+    end
+    handler.clientport = function( )
+        return clientport
+    end
+    local write = function( self, data )
+        bufferlen = bufferlen + string_len( data )
+        if bufferlen > maxsendlen then
+            _closelist[ handler ] = "send buffer exceeded"   -- cannot close the client at the moment, have to wait to the end of the cycle
+            handler.write = idfalse    -- dont write anymore
+            return false
+        elseif socket and not _sendlist[ socket ] then
+            _sendlistlen = addsocket(_sendlist, socket, _sendlistlen)
+        end
+        bufferqueuelen = bufferqueuelen + 1
+        bufferqueue[ bufferqueuelen ] = data
+        if handler then
+        	_writetimes[ handler ] = _writetimes[ handler ] or _currenttime
+        end
+        return true
+    end
+    handler.write = write
+    handler.bufferqueue = function( self )
+        return bufferqueue
+    end
+    handler.socket = function( self )
+        return socket
+    end
+    handler.pattern = function( self, new )
+        pattern = new or pattern
+        return pattern
+    end
+    handler.setsend = function ( self, newsend )
+        send = newsend or send
+        return send
+    end
+    handler.bufferlen = function( self, readlen, sendlen )
+        maxsendlen = sendlen or maxsendlen
+        maxreadlen = readlen or maxreadlen
+        return maxreadlen, maxsendlen
+    end
+    handler.lock = function( self, switch )
+        if switch == true then
+            handler.write = idfalse
+            local tmp = _sendlistlen
+            _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
+            _writetimes[ handler ] = nil
+            if _sendlistlen ~= tmp then
+                nosend = true
+            end
+            tmp = _readlistlen
+            _readlistlen = removesocket( _readlist, socket, _readlistlen )
+            _readtimes[ handler ] = nil
+            if _readlistlen ~= tmp then
+                noread = true
+            end
+        elseif switch == false then
+            handler.write = write
+            if noread then
+                noread = false
+                _readlistlen = addsocket(_readlist, socket, _readlistlen)
+                _readtimes[ handler ] = _currenttime
+            end
+            if nosend then
+                nosend = false
+                write( "" )
+            end
+        end
+        return noread, nosend
+    end
+    local _readbuffer = function( )    -- this function reads data
+        local buffer, err, part = receive( socket, pattern )    -- receive buffer with "pattern"
+        if not err or ( err == "timeout" or err == "wantread" ) then    -- received something
+            local buffer = buffer or part or ""
+            local len = string_len( buffer )
+            if len > maxreadlen then
+                disconnect( handler, "receive buffer exceeded" )
+                handler.close( true )
+                return false
+            end
+            local count = len * STAT_UNIT
+            readtraffic = readtraffic + count
+            _readtraffic = _readtraffic + count
+            _readtimes[ handler ] = _currenttime
+            --out_put( "server.lua: read data '", buffer:gsub("[^%w%p ]", "."), "', error: ", err )
+            return dispatch( handler, buffer, err )
+        else    -- connections was closed or fatal error
+            out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " read error: ", tostring(err) )
+            fatalerror = true
+            disconnect( handler, err )
+	    _ = handler and handler.close( )
+            return false
+        end
+    end
+    local _sendbuffer = function( )    -- this function sends data
+    	local succ, err, byte, buffer, count;
+    	local count;
+    	if socket then
+            buffer = table_concat( bufferqueue, "", 1, bufferqueuelen )
+            succ, err, byte = send( socket, buffer, 1, bufferlen )
+            count = ( succ or byte or 0 ) * STAT_UNIT
+            sendtraffic = sendtraffic + count
+            _sendtraffic = _sendtraffic + count
+            _ = _cleanqueue and clean( bufferqueue )
+            --out_put( "server.lua: sended '", buffer, "', bytes: ", tostring(succ), ", error: ", tostring(err), ", part: ", tostring(byte), ", to: ", tostring(ip), ":", tostring(clientport) )
+        else
+            succ, err, count = false, "closed", 0;
+        end
+        if succ then    -- sending succesful
+            bufferqueuelen = 0
+            bufferlen = 0
+            _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )    -- delete socket from writelist
+            _ = needtls and handler:starttls(true)
+            _writetimes[ handler ] = nil
+	    _ = toclose and handler.close( )
+            return true
+        elseif byte and ( err == "timeout" or err == "wantwrite" ) then    -- want write
+            buffer = string_sub( buffer, byte + 1, bufferlen )    -- new buffer
+            bufferqueue[ 1 ] = buffer    -- insert new buffer in queue
+            bufferqueuelen = 1
+            bufferlen = bufferlen - byte
+            _writetimes[ handler ] = _currenttime
+            return true
+        else    -- connection was closed during sending or fatal error
+            out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " write error: ", tostring(err) )
+            fatalerror = true
+            disconnect( handler, err )
+            _ = handler and handler.close( )
+            return false
+        end
+    end
+
+    -- Set the sslctx
+    local handshake;
+    function handler.set_sslctx(self, new_sslctx)
+        ssl = true
+        sslctx = new_sslctx;
+        local wrote
+        local read
+        handshake = coroutine_wrap( function( client )    -- create handshake coroutine
+                local err
+                for i = 1, _maxsslhandshake do
+                    _sendlistlen = ( wrote and removesocket( _sendlist, client, _sendlistlen ) ) or _sendlistlen
+                    _readlistlen = ( read and removesocket( _readlist, client, _readlistlen ) ) or _readlistlen
+                    read, wrote = nil, nil
+                    _, err = client:dohandshake( )
+                    if not err then
+                        out_put( "server.lua: ssl handshake done" )
+                        handler.readbuffer = _readbuffer    -- when handshake is done, replace the handshake function with regular functions
+                        handler.sendbuffer = _sendbuffer
+                        _ = status and status( handler, "ssl-handshake-complete" )
+                        _readlistlen = addsocket(_readlist, client, _readlistlen)
+                        return true
+                    else
+                       out_put( "server.lua: error during ssl handshake: ", tostring(err) )
+                       if err == "wantwrite" and not wrote then
+                           _sendlistlen = addsocket(_sendlist, client, _sendlistlen)
+                           wrote = true
+                       elseif err == "wantread" and not read then
+                           _readlistlen = addsocket(_readlist, client, _readlistlen)
+                           read = true
+                       else
+                           break;
+                       end
+                       --coroutine_yield( handler, nil, err )    -- handshake not finished
+                       coroutine_yield( )
+                    end
+                end
+                disconnect( handler, "ssl handshake failed" )
+                _ = handler and handler:close( true )    -- forced disconnect
+                return false    -- handshake failed
+            end
+        )
+    end
+    if sslctx then    -- ssl?
+    	handler:set_sslctx(sslctx);
+        if startssl then    -- ssl now?
+            --out_put("server.lua: ", "starting ssl handshake")
+	    local err
+            socket, err = ssl_wrap( socket, sslctx )    -- wrap socket
+            if err then
+                out_put( "server.lua: ssl error: ", tostring(err) )
+                --mem_free( )
+                return nil, nil, err    -- fatal error
+            end
+            socket:settimeout( 0 )
+            handler.readbuffer = handshake
+            handler.sendbuffer = handshake
+            handshake( socket ) -- do handshake
+            if not socket then
+                return nil, nil, "ssl handshake failed";
+            end
+        else
+            -- We're not automatically doing SSL, so we're not secure (yet)
+            ssl = false
+            handler.starttls = function( self, now )
+                if not now then
+                    --out_put "server.lua: we need to do tls, but delaying until later"
+                    needtls = true
+                    return
+                end
+                --out_put( "server.lua: attempting to start tls on " .. tostring( socket ) )
+                local oldsocket, err = socket
+                socket, err = ssl_wrap( socket, sslctx )    -- wrap socket
+                --out_put( "server.lua: sslwrapped socket is " .. tostring( socket ) )
+                if err then
+                    out_put( "server.lua: error while starting tls on client: ", tostring(err) )
+                    return nil, err    -- fatal error
+                end
+
+                socket:settimeout( 0 )
+
+                -- add the new socket to our system
+
+                send = socket.send
+                receive = socket.receive
+                shutdown = id
+
+                _socketlist[ socket ] = handler
+                _readlistlen = addsocket(_readlist, socket, _readlistlen)
+
+                -- remove traces of the old socket
+
+                _readlistlen = removesocket( _readlist, oldsocket, _readlistlen )
+                _sendlistlen = removesocket( _sendlist, oldsocket, _sendlistlen )
+                _socketlist[ oldsocket ] = nil
+
+                handler.starttls = nil
+                needtls = nil
+                
+                -- Secure now
+                ssl = true
+
+                handler.readbuffer = handshake
+                handler.sendbuffer = handshake
+                handshake( socket )    -- do handshake
+            end
+            handler.readbuffer = _readbuffer
+            handler.sendbuffer = _sendbuffer
+        end
+    else    -- normal connection
+        ssl = false
+        handler.readbuffer = _readbuffer
+        handler.sendbuffer = _sendbuffer
+    end
+
+    send = socket.send
+    receive = socket.receive
+    shutdown = ( ssl and id ) or socket.shutdown
+
+    _socketlist[ socket ] = handler
+    _readlistlen = addsocket(_readlist, socket, _readlistlen)
+
+    return handler, socket
+end
+
+id = function( )
+end
+
+idfalse = function( )
+    return false
+end
+
+addsocket = function( list, socket, len )
+    if not list[ socket ] then
+      len = len + 1
+      list[ len ] = socket
+      list[ socket ] = len
+    end
+    return len;
+end
+
+removesocket = function( list, socket, len )    -- this function removes sockets from a list ( copied from copas )
+    local pos = list[ socket ]
+    if pos then
+        list[ socket ] = nil
+        local last = list[ len ]
+        list[ len ] = nil
+        if last ~= socket then
+            list[ last ] = pos
+            list[ pos ] = last
+        end
+        return len - 1
+    end
+    return len
+end
+
+closesocket = function( socket )
+    _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )
+    _readlistlen = removesocket( _readlist, socket, _readlistlen )
+    _socketlist[ socket ] = nil
+    socket:close( )
+    --mem_free( )
+end
+
+----------------------------------// PUBLIC //--
+
+addserver = function( addr, port, listeners, pattern, sslctx, startssl )    -- this function provides a way for other scripts to reg a server
+    local err
+    --out_put("server.lua: autossl on ", port, " is ", startssl)
+    if type( listeners ) ~= "table" then
+        err = "invalid listener table"
+    end
+    if not type( port ) == "number" or not ( port >= 0 and port <= 65535 ) then
+        err = "invalid port"
+    elseif _server[ port ] then
+        err =  "listeners on port '" .. port .. "' already exist"
+    elseif sslctx and not luasec then
+        err = "luasec not found"
+    end
+    if err then
+        out_error( "server.lua, port ", port, ": ", err )
+        return nil, err
+    end
+    addr = addr or "*"
+    local server, err = socket_bind( addr, port )
+    if err then
+        out_error( "server.lua, port ", port, ": ", err )
+        return nil, err
+    end
+    local handler, err = wrapserver( listeners, server, addr, port, pattern, sslctx, _maxclientsperserver, startssl )    -- wrap new server socket
+    if not handler then
+        server:close( )
+        return nil, err
+    end
+    server:settimeout( 0 )
+    _readlistlen = addsocket(_readlist, server, _readlistlen)
+    _server[ port ] = handler
+    _socketlist[ server ] = handler
+    out_put( "server.lua: new server listener on '", addr, ":", port, "'" )
+    return handler
+end
+
+getserver = function ( port )
+	return _server[ port ];
+end
+
+removeserver = function( port )
+    local handler = _server[ port ]
+    if not handler then
+        return nil, "no server found on port '" .. tostring( port ) .. "'"
+    end
+    handler:close( )
+    _server[ port ] = nil
+    return true
+end
+
+closeall = function( )
+    for _, handler in pairs( _socketlist ) do
+        handler:close( )
+        _socketlist[ _ ] = nil
+    end
+    _readlistlen = 0
+    _sendlistlen = 0
+    _timerlistlen = 0
+    _server = { }
+    _readlist = { }
+    _sendlist = { }
+    _timerlist = { }
+    _socketlist = { }
+    --mem_free( )
+end
+
+getsettings = function( )
+    return  _selecttimeout, _sleeptime, _maxsendlen, _maxreadlen, _checkinterval, _sendtimeout, _readtimeout, _cleanqueue, _maxclientsperserver, _maxsslhandshake
+end
+
+changesettings = function( new )
+    if type( new ) ~= "table" then
+        return nil, "invalid settings table"
+    end
+    _selecttimeout = tonumber( new.timeout ) or _selecttimeout
+    _sleeptime = tonumber( new.sleeptime ) or _sleeptime
+    _maxsendlen = tonumber( new.maxsendlen ) or _maxsendlen
+    _maxreadlen = tonumber( new.maxreadlen ) or _maxreadlen
+    _checkinterval = tonumber( new.checkinterval ) or _checkinterval
+    _sendtimeout = tonumber( new.sendtimeout ) or _sendtimeout
+    _readtimeout = tonumber( new.readtimeout ) or _readtimeout
+    _cleanqueue = new.cleanqueue
+    _maxclientsperserver = new._maxclientsperserver or _maxclientsperserver
+    _maxsslhandshake = new._maxsslhandshake or _maxsslhandshake
+    return true
+end
+
+addtimer = function( listener )
+    if type( listener ) ~= "function" then
+        return nil, "invalid listener function"
+    end
+    _timerlistlen = _timerlistlen + 1
+    _timerlist[ _timerlistlen ] = listener
+    return true
+end
+
+stats = function( )
+    return _readtraffic, _sendtraffic, _readlistlen, _sendlistlen, _timerlistlen
+end
+
+local dontstop = true; -- thinking about tomorrow, ...
+
+setquitting = function (quit)
+	dontstop = not quit;
+	return;
+end
+
+loop = function( )    -- this is the main loop of the program
+    while dontstop do
+        local read, write, err = socket_select( _readlist, _sendlist, _selecttimeout )
+        for i, socket in ipairs( write ) do    -- send data waiting in writequeues
+            local handler = _socketlist[ socket ]
+            if handler then
+                handler.sendbuffer( )
+            else
+                closesocket( socket )
+                out_put "server.lua: found no handler and closed socket (writelist)"    -- this should not happen
+            end
+        end
+        for i, socket in ipairs( read ) do    -- receive data
+            local handler = _socketlist[ socket ]
+            if handler then
+                handler.readbuffer( )
+            else
+                closesocket( socket )
+                out_put "server.lua: found no handler and closed socket (readlist)"    -- this can happen
+            end
+        end
+        for handler, err in pairs( _closelist ) do
+            handler.disconnect( )( handler, err )
+            handler:close( true )    -- forced disconnect
+        end
+        clean( _closelist )
+        _currenttime = os_time( )
+        if os_difftime( _currenttime - _timer ) >= 1 then
+            for i = 1, _timerlistlen do
+                _timerlist[ i ]( _currenttime )    -- fire timers
+            end
+            _timer = _currenttime
+        end
+        socket_sleep( _sleeptime )    -- wait some time
+        --collectgarbage( )
+    end
+    return "quitting"
+end
+
+--// EXPERIMENTAL //--
+
+local wrapclient = function( socket, ip, serverport, listeners, pattern, sslctx, startssl )
+    local handler = wrapconnection( nil, listeners, socket, ip, serverport, "clientport", pattern, sslctx, startssl )
+    _socketlist[ socket ] = handler
+    _sendlistlen = addsocket(_sendlist, socket, _sendlistlen)
+    return handler, socket
+end
+
+local addclient = function( address, port, listeners, pattern, sslctx, startssl )
+    local client, err = luasocket.tcp( )
+    if err then
+        return nil, err
+    end
+    client:settimeout( 0 )
+    _, err = client:connect( address, port )
+    if err then    -- try again
+        local handler = wrapclient( client, address, port, listeners )
+    else
+        wrapconnection( nil, listeners, client, address, port, "clientport", pattern, sslctx, startssl )
+    end
+end
+
+--// EXPERIMENTAL //--
+
+----------------------------------// BEGIN //--
+
+use "setmetatable" ( _socketlist, { __mode = "k" } )
+use "setmetatable" ( _readtimes, { __mode = "k" } )
+use "setmetatable" ( _writetimes, { __mode = "k" } )
+
+_timer = os_time( )
+_starttime = os_time( )
+
+addtimer( function( )
+        local difftime = os_difftime( _currenttime - _starttime )
+        if difftime > _checkinterval then
+            _starttime = _currenttime
+            for handler, timestamp in pairs( _writetimes ) do
+                if os_difftime( _currenttime - timestamp ) > _sendtimeout then
+                    --_writetimes[ handler ] = nil
+                    handler.disconnect( )( handler, "send timeout" )
+                    handler:close( true )    -- forced disconnect
+                end
+            end
+            for handler, timestamp in pairs( _readtimes ) do
+                if os_difftime( _currenttime - timestamp ) > _readtimeout then
+                    --_readtimes[ handler ] = nil
+                    handler.disconnect( )( handler, "read timeout" )
+                    handler:close( )    -- forced disconnect?
+                end
+            end
+        end
+    end
+)
+
+----------------------------------// PUBLIC INTERFACE //--
+
+return {
+
+    addclient = addclient,
+    wrapclient = wrapclient,
+    
+    loop = loop,
+    stats = stats,
+    closeall = closeall,
+    addtimer = addtimer,
+    addserver = addserver,
+    getserver = getserver,
+    getsettings = getsettings,
+    setquitting = setquitting,
+    removeserver = removeserver,
+    changesettings = changesettings,
+}
diff -r 7cb6460b18d8 -r 141896297cea net/xmppclient_listener.lua
--- a/net/xmppclient_listener.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/net/xmppclient_listener.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -61,7 +61,7 @@
 		function session.data(conn, data)
 			local ok, err = parser:parse(data);
 			if ok then return; end
-			log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "));
+			log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "):gsub("[%z\1-\31]", "_"));
 			session:close("xml-not-well-formed");
 		end
 		
@@ -100,15 +100,15 @@
 			end
 		end
 		session.send("</stream:stream>");
-		session.conn.close();
-		xmppclient.disconnect(session.conn, (reason and (reason.text or reason.condition)) or reason or "session closed");
+		session.conn:close();
+		xmppclient.ondisconnect(session.conn, (reason and (reason.text or reason.condition)) or reason or "session closed");
 	end
 end
 
 
 -- End of session methods --
 
-function xmppclient.listener(conn, data)
+function xmppclient.onincoming(conn, data)
 	local session = sessions[conn];
 	if not session then
 		session = sm_new_session(conn);
@@ -117,7 +117,7 @@
 		session.log("info", "Client connected");
 		
 		-- Client is using legacy SSL (otherwise mod_tls sets this flag)
-		if conn.ssl() then
+		if conn:ssl() then
 			session.secure = true;
 		end
 		
@@ -133,14 +133,13 @@
 	end
 end
 	
-function xmppclient.disconnect(conn, err)
+function xmppclient.ondisconnect(conn, err)
 	local session = sessions[conn];
 	if session then
 		(session.log or log)("info", "Client disconnected: %s", err);
 		sm_destroy_session(session, err);
 		sessions[conn]  = nil;
 		session = nil;
-		collectgarbage("collect");
 	end
 end
 
diff -r 7cb6460b18d8 -r 141896297cea net/xmppcomponent_listener.lua
--- a/net/xmppcomponent_listener.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/net/xmppcomponent_listener.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -118,16 +118,16 @@
 		end
 		session.send("</stream:stream>");
 		session.conn.close();
-		component_listener.disconnect(session.conn, "stream error");
+		component_listener.ondisconnect(session.conn, "stream error");
 	end
 end
 
 --- Component connlistener
-function component_listener.listener(conn, data)
+function component_listener.onincoming(conn, data)
 	local session = sessions[conn];
 	if not session then
 		local _send = conn.write;
-		session = { type = "component", conn = conn, send = function (data) return _send(tostring(data)); end };
+		session = { type = "component", conn = conn, send = function (data) return _send(conn, tostring(data)); end };
 		sessions[conn] = session;
 
 		-- Logging functions --
@@ -157,7 +157,7 @@
 	end
 end
 	
-function component_listener.disconnect(conn, err)
+function component_listener.ondisconnect(conn, err)
 	local session = sessions[conn];
 	if session then
 		(session.log or log)("info", "component disconnected: %s (%s)", tostring(session.host), tostring(err));
@@ -169,7 +169,6 @@
 		sessions[conn]  = nil;
 		for k in pairs(session) do session[k] = nil; end
 		session = nil;
-		collectgarbage("collect");
 	end
 end
 
diff -r 7cb6460b18d8 -r 141896297cea net/xmppserver_listener.lua
--- a/net/xmppserver_listener.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/net/xmppserver_listener.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -104,14 +104,14 @@
 			session.conn.close(true); -- Force FIXME: timer?
 		end
 		session.conn.close();
-		xmppserver.disconnect(session.conn, "stream error");
+		xmppserver.ondisconnect(session.conn, "stream error");
 	end
 end
 
 
 -- End of session methods --
 
-function xmppserver.listener(conn, data)
+function xmppserver.onincoming(conn, data)
 	local session = sessions[conn];
 	if not session then
 		session = s2s_new_incoming(conn);
@@ -148,7 +148,7 @@
 	end
 end
 
-function xmppserver.disconnect(conn, err)
+function xmppserver.ondisconnect(conn, err)
 	local session = sessions[conn];
 	if session then
 		if err and err ~= "closed" and session.srv_hosts then
@@ -162,7 +162,6 @@
 		s2s_destroy_session(session);
 		sessions[conn]  = nil;
 		session = nil;
-		collectgarbage("collect");
 	end
 end
 
diff -r 7cb6460b18d8 -r 141896297cea plugins/mod_bosh.lua
--- a/plugins/mod_bosh.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/plugins/mod_bosh.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -152,7 +152,7 @@
 		local r, send_buffer = session.requests, session.send_buffer;
 		local response = { headers = default_headers }
 		function session.send(s)
-			log("debug", "Sending BOSH data: %s", tostring(s));
+			--log("debug", "Sending BOSH data: %s", tostring(s));
 			local oldest_request = r[1];
 			while oldest_request and oldest_request.destroyed do
 				t_remove(r, 1);
@@ -160,7 +160,7 @@
 				oldest_request = r[1];
 			end
 			if oldest_request then
-				log("debug", "We have an open request, so using that to send with");
+				log("debug", "We have an open request, so sending on that");
 				response.body = t_concat{"<body xmlns='http://jabber.org/protocol/httpbind' sid='", sid, "' xmlns:stream = 'http://etherx.jabber.org/streams'>", tostring(s), "</body>" };
 				oldest_request:send(response);
 				--log("debug", "Sent");
diff -r 7cb6460b18d8 -r 141896297cea plugins/mod_console.lua
--- a/plugins/mod_console.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/plugins/mod_console.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -33,7 +33,7 @@
 console = {};
 
 function console:new_session(conn)
-	local w = function(s) conn.write(s:gsub("\n", "\r\n")); end;
+	local w = function(s) conn:write(s:gsub("\n", "\r\n")); end;
 	local session = { conn = conn;
 			send = function (t) w(tostring(t)); end;
 			print = function (t) w("| "..tostring(t).."\n"); end;
@@ -53,7 +53,7 @@
 
 local sessions = {};
 
-function console_listener.listener(conn, data)
+function console_listener.onincoming(conn, data)
 	local session = sessions[conn];
 	
 	if not session then
@@ -126,7 +126,7 @@
 	session.send(string.char(0));
 end
 
-function console_listener.disconnect(conn, err)
+function console_listener.ondisconnect(conn, err)
 	local session = sessions[conn];
 	if session then
 		session.disconnect();
diff -r 7cb6460b18d8 -r 141896297cea plugins/mod_presence.lua
--- a/plugins/mod_presence.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/plugins/mod_presence.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -233,6 +233,7 @@
 				-- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too)
 			end
 		else
+			core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="unavailable"})); -- acknowledging receipt
 			if not rostermanager.is_contact_pending_in(node, host, from_bare) then
 				if rostermanager.set_contact_pending_in(node, host, from_bare) then
 					sessionmanager.send_to_available_resources(node, host, stanza);
@@ -241,14 +242,17 @@
 		end
 	elseif stanza.attr.type == "unsubscribe" then
 		if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then
+			sessionmanager.send_to_interested_resources(node, host, stanza);
 			rostermanager.roster_push(node, host, from_bare);
 		end
 	elseif stanza.attr.type == "subscribed" then
 		if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then
+			sessionmanager.send_to_interested_resources(node, host, stanza);
 			rostermanager.roster_push(node, host, from_bare);
 		end
 	elseif stanza.attr.type == "unsubscribed" then
 		if rostermanager.process_inbound_subscription_cancellation(node, host, from_bare) then
+			sessionmanager.send_to_interested_resources(node, host, stanza);
 			rostermanager.roster_push(node, host, from_bare);
 		end
 	end -- discard any other type
diff -r 7cb6460b18d8 -r 141896297cea plugins/mod_proxy65.lua
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/mod_proxy65.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -0,0 +1,268 @@
+-- Copyright (C) 2009 Thilo Cestonaro
+-- 
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+--[[
+* to restart the proxy in the console: e.g.
+module:unload("proxy65");
+> server.removeserver(<proxy65_port>);
+module:load("proxy65", <proxy65_jid>);
+]]--
+
+if module:get_host_type() ~= "component" then
+	error("proxy65 should be loaded as a component, please see http://prosody.im/doc/components", 0);
+end
+
+local jid_split = require "util.jid".split;
+local st = require "util.stanza";
+local componentmanager = require "core.componentmanager";
+local config_get = require "core.configmanager".get;
+local connlisteners = require "net.connlisteners";
+local sha1 = require "util.hashes".sha1;
+
+local host, name = module:get_host(), "SOCKS5 Bytestreams Service";
+local sessions, transfers, component, replies_cache = {}, {}, nil, {};
+
+local proxy_port = config_get(host, "core", "proxy65_port") or 5000;
+local proxy_interface = config_get(host, "core", "proxy65_interface") or "*";
+local proxy_address = config_get(host, "core", "proxy65_address") or (proxy_interface ~= "*" and proxy_interface) or host;
+local proxy_acl = config_get(host, "core", "proxy65_acl");
+
+local connlistener = { default_port = proxy_port, default_interface = proxy_interface, default_mode = "*a" };
+
+function connlistener.listener(conn, data)
+	local session = sessions[conn] or {};
+	
+	if session.setup == nil and data ~= nil and data:sub(1):byte() == 0x05 and data:len() > 2 then
+		local nmethods = data:sub(2):byte();
+		local methods = data:sub(3);
+		local supported = false;
+		for i=1, nmethods, 1 do
+			if(methods:sub(i):byte() == 0x00) then -- 0x00 == method: NO AUTH
+				supported = true;
+				break;
+			end
+		end
+		if(supported) then
+			module:log("debug", "new session found ... ")
+			session.setup = true;
+			sessions[conn] = session;
+			conn:write(string.char(5, 0));
+		end
+		return;
+	end
+	if session.setup then
+		if session.sha ~= nil and transfers[session.sha] ~= nil then
+			local sha = session.sha;
+			if transfers[sha].activated == true and transfers[sha].initiator == conn and transfers[sha].target ~= nil then
+				transfers[sha].target:write(data);
+				return;
+			end
+		end
+		if data ~= nil and data:len() == 0x2F and  -- 40 == length of SHA1 HASH, and 7 other bytes => 47 => 0x2F
+			data:sub(1):byte() == 0x05 and -- SOCKS5 has 5 in first byte
+			data:sub(2):byte() == 0x01 and -- CMD must be 1
+			data:sub(3):byte() == 0x00 and -- RSV must be 0
+			data:sub(4):byte() == 0x03 and -- ATYP must be 3
+			data:sub(5):byte() == 40 and -- SHA1 HASH length must be 40 (0x28)
+			data:sub(-2):byte() == 0x00 and -- PORT must be 0, size 2 byte
+			data:sub(-1):byte() == 0x00 		
+		then
+			local sha = data:sub(6, 45); -- second param is not count! it's the ending index (included!)
+			if transfers[sha] == nil then
+				transfers[sha] = {};
+				transfers[sha].activated = false;
+				transfers[sha].target = conn;
+				session.sha = sha;
+				module:log("debug", "target connected ... ");
+			elseif transfers[sha].target ~= nil then
+				transfers[sha].initiator = conn;
+				session.sha = sha;
+				module:log("debug", "initiator connected ... ");
+			end
+			conn:write(string.char(5, 0, 0, 3, sha:len()) .. sha .. string.char(0, 0)); -- VER, REP, RSV, ATYP, BND.ADDR (sha), BND.PORT (2 Byte)
+		else
+			log:module("warn", "Neither data transfer nor initial connect of a participator of a transfer.")
+			conn.close();
+		end
+	else
+		if data ~= nil then
+			module:log("warn", "unknown connection with no authentication data -> closing it");
+			conn.close();
+		end
+	end
+end
+
+function connlistener.disconnect(conn, err)
+	local session = sessions[conn];
+	if session then
+		if session.sha and transfers[session.sha] then
+			local initiator, target = transfers[session.sha].initiator, transfers[session.sha].target;
+			if initiator == conn and target ~= nil then
+				target.close();
+			elseif target == conn and initiator ~= nil then
+			 	initiator.close();
+			end
+			transfers[session.sha] = nil;
+		end
+		-- Clean up any session-related stuff here
+		sessions[conn] = nil;
+	end
+end
+
+local function get_disco_info(stanza)
+	local reply = replies_cache.disco_info;
+	if reply == nil then
+	 	reply = st.iq({type='result', from=host}):query("http://jabber.org/protocol/disco#info")
+			:tag("identity", {category='proxy', type='bytestreams', name=name}):up()
+			:tag("feature", {var="http://jabber.org/protocol/bytestreams"});
+		replies_cache.disco_info = reply;
+	end
+
+	reply.attr.id = stanza.attr.id;
+	reply.attr.to = stanza.attr.from;
+	return reply;
+end
+
+local function get_disco_items(stanza)
+	local reply = replies_cache.disco_items;
+	if reply == nil then
+	 	reply = st.iq({type='result', from=host}):query("http://jabber.org/protocol/disco#items");
+		replies_cache.disco_items = reply;
+	end
+	
+	reply.attr.id = stanza.attr.id;
+	reply.attr.to = stanza.attr.from;
+	return reply;
+end
+
+local function _jid_join(node, host, resource)
+	local ret = host;
+	if ret then
+		if node then
+			ret = node .. "@" .. ret;
+		end
+		if resource then
+			ret = ret .. "/" .. resource;
+		end
+	end
+	return ret;
+end
+
+local function get_stream_host(origin, stanza)
+	local reply = replies_cache.stream_host;
+	local err_reply = replies_cache.stream_host_err;
+	local sid = stanza.tags[1].attr.sid;
+	local allow = false;
+	local jid_node, jid_host, jid_resource = jid_split(stanza.attr.from);
+	
+	if stanza.attr.from == nil then
+		jid_node = origin.username;
+		jid_host = origin.host;
+		jid_resource = origin.resource;
+	end
+	
+	if proxy_acl and #proxy_acl > 0 then
+		if host ~= nil then -- at least a domain is needed.
+			for _, acl in ipairs(proxy_acl) do
+				local acl_node, acl_host, acl_resource = jid_split(acl);
+				if ((acl_node ~= nil and acl_node == jid_node) or acl_node == nil) and
+				   ((acl_host ~= nil and acl_host == jid_host) or acl_host == nil) and
+				   ((acl_resource ~= nil and acl_resource == jid_resource) or acl_resource == nil) then
+					allow = true;
+				end
+			end
+		end
+	else
+		allow = true;
+	end
+	if allow == true then
+		if reply == nil then
+			reply = st.iq({type="result", from=host})
+				:query("http://jabber.org/protocol/bytestreams")
+				:tag("streamhost", {jid=host, host=proxy_address, port=proxy_port});
+			replies_cache.stream_host = reply;
+		end
+	else
+		module:log("warn", "Denying use of proxy for %s", tostring(_jid_join(jid_node, jid_host, jid_resource)));
+		if err_reply == nil then
+			err_reply = st.iq({type="error", from=host})
+				:query("http://jabber.org/protocol/bytestreams")
+				:tag("error", {code='403', type='auth'})
+				:tag("forbidden", {xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'});
+			replies_cache.stream_host_err = err_reply;
+		end
+		reply = err_reply;
+	end
+	reply.attr.id = stanza.attr.id;
+	reply.attr.to = stanza.attr.from;
+	reply.tags[1].attr.sid = sid;
+	return reply;
+end
+
+module.unload = function()
+	componentmanager.deregister_component(host);
+	connlisteners.deregister(module.host .. ':proxy65');
+end
+
+local function set_activation(stanza)
+	local from, to, sid, reply = nil;
+	from = stanza.attr.from;
+	if stanza.tags[1] ~= nil and tostring(stanza.tags[1].name) == "query" then
+		if stanza.tags[1].attr ~= nil then
+			sid = stanza.tags[1].attr.sid;
+		end
+		if stanza.tags[1].tags[1] ~= nil and tostring(stanza.tags[1].tags[1].name) == "activate" then
+			to = stanza.tags[1].tags[1][1];
+		end
+	end
+	if from ~= nil and to ~= nil and sid ~= nil then
+		reply = st.iq({type="result", from=host, to=from});
+		reply.attr.id = stanza.attr.id;
+	end
+	return reply, from, to, sid;
+end
+
+function handle_to_domain(origin, stanza)
+	local to_node, to_host, to_resource = jid_split(stanza.attr.to);
+	if to_node == nil then
+		local type = stanza.attr.type;
+		if type == "error" or type == "result" then return; end
+		if stanza.name == "iq" and type == "get" then
+			local xmlns = stanza.tags[1].attr.xmlns
+			if xmlns == "http://jabber.org/protocol/disco#info" then
+				origin.send(get_disco_info(stanza));
+				return true;
+			elseif xmlns == "http://jabber.org/protocol/disco#items" then
+				origin.send(get_disco_items(stanza));
+				return true;
+			elseif xmlns == "http://jabber.org/protocol/bytestreams" then
+				origin.send(get_stream_host(origin, stanza));
+				return true;
+			end
+		elseif stanza.name == "iq" and type == "set" then
+			local reply, from, to, sid = set_activation(stanza);
+			if reply ~= nil and from ~= nil and to ~= nil and sid ~= nil then
+				local sha = sha1(sid .. from .. to, true);
+				if transfers[sha] == nil then
+					module:log("error", "transfers[sha]: nil");
+				elseif(transfers[sha] ~= nil and transfers[sha].initiator ~= nil and transfers[sha].target ~= nil) then
+					origin.send(reply);
+					transfers[sha].activated = true;
+				end
+			else
+				module:log("error", "activation failed: sid: %s, initiator: %s, target: %s", tostring(sid), tostring(from), tostring(to));
+			end
+		end
+	end
+	return;
+end
+
+if not connlisteners.register(module.host .. ':proxy65', connlistener) then
+	error("mod_proxy65: Could not establish a connection listener. Check your configuration please.");
+	error(" one possible cause for this would be that two proxy65 components share the same port.");
+end
+
+connlisteners.start(module.host .. ':proxy65');
+component = componentmanager.register_component(host, handle_to_domain);
diff -r 7cb6460b18d8 -r 141896297cea plugins/mod_tls.lua
--- a/plugins/mod_tls.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/plugins/mod_tls.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -20,9 +20,9 @@
 				session.send(st.stanza("proceed", { xmlns = xmlns_starttls }));
 				session:reset_stream();
 				if session.host and hosts[session.host].ssl_ctx_in then
-					session.conn.set_sslctx(hosts[session.host].ssl_ctx_in);
+					session.conn:set_sslctx(hosts[session.host].ssl_ctx_in);
 				end
-				session.conn.starttls();
+				session.conn:starttls();
 				session.log("info", "TLS negotiation started...");
 				session.secure = false;
 			else
@@ -37,9 +37,9 @@
 				session.sends2s(st.stanza("proceed", { xmlns = xmlns_starttls }));
 				session:reset_stream();
 				if session.to_host and hosts[session.to_host].ssl_ctx_in then
-					session.conn.set_sslctx(hosts[session.to_host].ssl_ctx_in);
+					session.conn:set_sslctx(hosts[session.to_host].ssl_ctx_in);
 				end
-				session.conn.starttls();
+				session.conn:starttls();
 				session.log("info", "TLS negotiation started for incoming s2s...");
 				session.secure = false;
 			else
@@ -91,7 +91,7 @@
 			module:log("debug", "Proceeding with TLS on s2sout...");
 			local format, to_host, from_host = string.format, session.to_host, session.from_host;
 			session:reset_stream();
-			session.conn.starttls(true);
+			session.conn:starttls(true);
 			session.secure = false;
 			return true;
 		end);
diff -r 7cb6460b18d8 -r 141896297cea prosody
--- a/prosody	Thu Nov 19 17:53:52 2009 +0100
+++ b/prosody	Wed Nov 25 17:39:23 2009 +0000
@@ -14,7 +14,7 @@
 CFG_PLUGINDIR=os.getenv("PROSODY_PLUGINDIR");
 CFG_DATADIR=os.getenv("PROSODY_DATADIR");
 
--- -- -- -- -- -- -- ---- -- -- -- -- -- -- -- --
+-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
 
 if CFG_SOURCEDIR then
 	package.path = CFG_SOURCEDIR.."/?.lua;"..package.path;
@@ -58,7 +58,27 @@
 function read_config()
 	-- TODO: Check for other formats when we add support for them
 	-- Use lfs? Make a new conf/ dir?
-	local ok, level, err = config.load((CFG_CONFIGDIR or ".").."/prosody.cfg.lua");
+	local filenames = {};
+	
+	local filename;
+	if arg[1] == "--config" and arg[2] then
+		table.insert(filenames, arg[2]);
+		if CFG_CONFIGDIR then
+			table.insert(filenames, CFG_CONFIGDIR.."/"..arg[2]);
+		end
+	else
+		table.insert(filenames, (CFG_CONFIGDIR or ".").."/prosody.cfg.lua");
+	end
+	for _,_filename in ipairs(filenames) do
+		filename = _filename;
+		local file = io.open(filename);
+		if file then
+			file:close();
+			CFG_CONFIGDIR = filename:match("^(.*)[\\/][^\\/]*$");
+			break;
+		end
+	end
+	local ok, level, err = config.load(filename);
 	if not ok then
 		print("\n");
 		print("**************************");
@@ -82,13 +102,13 @@
 end
 
 function load_libraries()
-	--- Initialize logging
+	-- Initialize logging
 	require "core.loggingmanager"
 	
-	--- Check runtime dependencies
+	-- Check runtime dependencies
 	require "util.dependencies"
 	
-	--- Load socket framework
+	-- Load socket framework
 	server = require "net.server"
 end	
 
diff -r 7cb6460b18d8 -r 141896297cea tests/modulemanager_option_conversion.lua
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/modulemanager_option_conversion.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -0,0 +1,55 @@
+package.path = "../?.lua;"..package.path;
+
+local api = require "core.modulemanager".api;
+
+local module = setmetatable({}, {__index = api});
+local opt = nil;
+function module:log() end
+function module:get_option(name)
+	if name == "opt" then
+		return opt;
+	else
+		return nil;
+	end
+end
+
+function test_value(value, returns)
+	opt = value;
+	assert(module:get_option_number("opt") == returns.number, "number doesn't match");
+	assert(module:get_option_string("opt") == returns.string, "string doesn't match");
+	assert(module:get_option_boolean("opt") == returns.boolean, "boolean doesn't match");
+	
+	if type(returns.array) == "table" then
+		local target_array, returned_array = returns.array, module:get_option_array("opt");
+		assert(#target_array == #returned_array, "array length doesn't match");
+		for i=1,#target_array do
+			assert(target_array[i] == returned_array[i], "array item doesn't match");
+		end
+	else
+		assert(module:get_option_array("opt") == returns.array, "array is returned (not nil)");
+	end
+	
+	if type(returns.set) == "table" then
+		local target_items, returned_items = set.new(returns.set), module:get_option_set("opt");
+		assert(target_items == returned_items, "set doesn't match");
+	else
+		assert(module:get_option_set("opt") == returns.set, "set is returned (not nil)");
+	end
+end
+
+test_value(nil, {});
+
+test_value(true, { boolean = true, string = "true", array = {true}, set = {true} });
+test_value(false, { boolean = false, string = "false", array = {false}, set = {false} });
+test_value("true", { boolean = true, string = "true", array = {"true"}, set = {"true"} });
+test_value("false", { boolean = false, string = "false", array = {"false"}, set = {"false"} });
+test_value(1, { boolean = true, string = "1", array = {1}, set = {1}, number = 1 });
+test_value(0, { boolean = false, string = "0", array = {0}, set = {0}, number = 0 });
+
+test_value("hello world", { string = "hello world", array = {"hello world"}, set = {"hello world"} });
+test_value(1234, { string = "1234", number = 1234, array = {1234}, set = {1234} });
+
+test_value({1, 2, 3}, { boolean = true, string = "1", number = 1, array = {1, 2, 3}, set = {1, 2, 3} });
+test_value({1, 2, 3, 3, 4}, {boolean = true, string = "1", number = 1, array = {1, 2, 3, 3, 4}, set = {1, 2, 3, 4} });
+test_value({0, 1, 2, 3}, { boolean = false, string = "0", number = 0, array = {0, 1, 2, 3}, set = {0, 1, 2, 3} });
+
diff -r 7cb6460b18d8 -r 141896297cea util/datamanager.lua
--- a/util/datamanager.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/util/datamanager.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -15,13 +15,13 @@
 local log = require "util.logger".init("datamanager");
 local io_open = io.open;
 local os_remove = os.remove;
-local io_popen = io.popen;
 local tostring, tonumber = tostring, tonumber;
 local error = error;
 local next = next;
 local t_insert = table.insert;
 local append = require "util.serialization".append;
 local path_separator = "/"; if os.getenv("WINDIR") then path_separator = "\\" end
+local lfs_mkdir = require "lfs".mkdir;
 
 module "datamanager"
 
@@ -43,7 +43,7 @@
 local function mkdir(path)
 	path = path:gsub("/", path_separator); -- TODO as an optimization, do this during path creation rather than here
 	if not _mkdir[path] then
-		local x = io_popen("mkdir \""..path.."\" 2>&1"):read("*a");
+		lfs_mkdir(path);
 		_mkdir[path] = true;
 	end
 	return path;
diff -r 7cb6460b18d8 -r 141896297cea util/dependencies.lua
--- a/util/dependencies.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/util/dependencies.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -17,8 +17,12 @@
 	print("Prosody was unable to find "..tostring(name));
 	print("This package can be obtained in the following ways:");
 	print("");
-	for k,v in pairs(sources) do
-		print("", k, v);
+	local longest_platform = 0;
+	for platform in pairs(sources) do
+		longest_platform = math.max(longest_platform, #platform);
+	end
+	for platform, source in pairs(sources) do
+		print("", platform..":"..(" "):rep(4+longest_platform-#platform)..source);
 	end
 	print("");
 	print(msg or (name.." is required for Prosody to run, so we will now exit."));
@@ -30,24 +34,51 @@
 local lxp = softreq "lxp"
 
 if not lxp then
-	missingdep("luaexpat", { ["Ubuntu 8.04 (Hardy)"] = "sudo apt-get install liblua5.1-expat0"; ["luarocks"] = "luarocks install luaexpat"; });
+	missingdep("luaexpat", {
+			["Debian/Ubuntu"] = "sudo apt-get install liblua5.1-expat0";
+			["luarocks"] = "luarocks install luaexpat";
+			["Source"] = "http://www.keplerproject.org/luaexpat/";
+		});
 	fatal = true;
 end
 
 local socket = softreq "socket"
 
 if not socket then
-	missingdep("luasocket", { ["Ubuntu 8.04 (Hardy)"] = "sudo apt-get install liblua5.1-socket2"; ["luarocks"] = "luarocks install luasocket"; });
+	missingdep("luasocket", {
+			["Debian/Ubuntu"] = "sudo apt-get install liblua5.1-socket2";
+			["luarocks"] = "luarocks install luasocket";
+			["Source"] = "http://www.tecgraf.puc-rio.br/~diego/professional/luasocket/";
+		});
 	fatal = true;
 end
 	
+local lfs, err = softreq "lfs"
+if not lfs then
+	missingdep("luafilesystem", {
+			["luarocks"] = "luarocks install luafilesystem";
+	 		["Debian/Ubuntu"] = "sudo apt-get install liblua5.1-luafilesystem0";
+	 		["Source"] = "http://www.keplerproject.org/luafilesystem/";
+	 	});
+	fatal = true;
+end
+
 local ssl = softreq "ssl"
 
 if not ssl then
 	if config.get("*", "core", "run_without_ssl") then
 		log("warn", "Running without SSL support because run_without_ssl is defined in the config");
 	else
-		missingdep("LuaSec", { ["Source"] = "http://www.inf.puc-rio.br/~brunoos/luasec/" }, "SSL/TLS support will not be available");
+		missingdep("LuaSec", {
+				["Debian/Ubuntu"] = "http://prosody.im/download/start#debian_and_ubuntu";
+				["luarocks"] = "luarocks install luasec";
+				["Source"] = "http://www.inf.puc-rio.br/~brunoos/luasec/";
+			}, "SSL/TLS support will not be available");
+	end
+else
+	local major, minor, veryminor, patched = ssl._VERSION:match("(%d+)%.(%d+)%.?(%d*)(M?)");
+	if not major or ((tonumber(major) == 0 and (tonumber(minor) or 0) <= 3 and (tonumber(veryminor) or 0) <= 2) and patched ~= "M") then
+		log("error", "This version of LuaSec contains a known bug that causes disconnects, see http://prosody.im/doc/depends");
 	end
 end
 
diff -r 7cb6460b18d8 -r 141896297cea util/serialization.lua
--- a/util/serialization.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/util/serialization.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -13,6 +13,7 @@
 local t_concat = table.concat;
 local error = error;
 local pairs = pairs;
+local next = next;
 
 local debug_traceback = debug.traceback;
 local log = require "util.logger".init("serialization");
@@ -34,21 +35,25 @@
 	elseif type(o) == "string" then
 		func(t, (("%q"):format(o):gsub("\\\n", "\\n")));
 	elseif type(o) == "table" then
-		func(t, "{\n");
-		for k,v in pairs(o) do
-			func(t, indent(ind));
-			func(t, "[");
-			func(t, basicSerialize(k));
-			func(t, "] = ");
-			if ind == 0 then
-				_simplesave(v, 0, t, func);
-			else
-				_simplesave(v, ind+1, t, func);
+		if next(o) then
+			func(t, "{\n");
+			for k,v in pairs(o) do
+				func(t, indent(ind));
+				func(t, "[");
+				func(t, basicSerialize(k));
+				func(t, "] = ");
+				if ind == 0 then
+					_simplesave(v, 0, t, func);
+				else
+					_simplesave(v, ind+1, t, func);
+				end
+				func(t, ";\n");
 			end
-			func(t, ",\n");
+			func(t, indent(ind-1));
+			func(t, "}");
+		else
+			func(t, "{}");
 		end
-		func(t, indent(ind-1));
-		func(t, "}");
 	elseif type(o) == "boolean" then
 		func(t, (o and "true" or "false"));
 	else
diff -r 7cb6460b18d8 -r 141896297cea util/timer.lua
--- a/util/timer.lua	Thu Nov 19 17:53:52 2009 +0100
+++ b/util/timer.lua	Wed Nov 25 17:39:23 2009 +0000
@@ -8,6 +8,9 @@
 
 
 local ns_addtimer = require "net.server".addtimer;
+local event = require "net.server".event;
+local event_base = require "net.server".event_base;
+
 local get_time = os.time;
 local t_insert = table.insert;
 local t_remove = table.remove;
@@ -19,33 +22,51 @@
 
 module "timer"
 
-local function _add_task(delay, func)
-	local current_time = get_time();
-	delay = delay + current_time;
-	if delay >= current_time then
-		t_insert(new_data, {delay, func});
-	else func(); end
+local _add_task;
+if not event then
+	function _add_task(delay, func)
+		local current_time = get_time();
+		delay = delay + current_time;
+		if delay >= current_time then
+			t_insert(new_data, {delay, func});
+		else
+			func();
+		end
+	end
+
+	ns_addtimer(function()
+		local current_time = get_time();
+		if #new_data > 0 then
+			for _, d in pairs(new_data) do
+				t_insert(data, d);
+			end
+			new_data = {};
+		end
+		
+		for i, d in pairs(data) do
+			local t, func = d[1], d[2];
+			if t <= current_time then
+				data[i] = nil;
+				local r = func(current_time);
+				if type(r) == "number" then _add_task(r, func); end
+			end
+		end
+	end);
+else
+	local EVENT_LEAVE = (event.core and event.core.LEAVE) or -1;
+	function _add_task(delay, func)
+		event_base:addevent(nil, event.EV_TIMEOUT, function ()
+			local ret = func();
+			if ret then
+				_add_task(ret, func);
+			else
+				return EVENT_LEAVE;
+			end
+		end
+		, delay);
+	end
 end
 
 add_task = _add_task;
 
-ns_addtimer(function()
-	local current_time = get_time();
-	if #new_data > 0 then
-		for _, d in pairs(new_data) do
-			t_insert(data, d);
-		end
-		new_data = {};
-	end
-	
-	for i, d in pairs(data) do
-		local t, func = d[1], d[2];
-		if t <= current_time then
-			data[i] = nil;
-			local r = func(current_time);
-			if type(r) == "number" then _add_task(r, func); end
-		end
-	end
-end);
-
 return _M;