Rename plugins/s2s/ to plugins/mod_s2s/

2 files changed, 0 insertions, 838 deletions

diff --git a/plugins/s2s/mod_s2s.lua b/plugins/s2s/mod_s2s.lua
deleted file mode 100644
index 649cd595..00000000
--- a/plugins/s2s/mod_s2s.lua
+++ /dev/null
@@ -1,486 +0,0 @@
--- Prosody IM
--- Copyright (C) 2008-2010 Matthew Wild
--- Copyright (C) 2008-2010 Waqas Hussain
--- 
--- This project is MIT/X11 licensed. Please see the
--- COPYING file in the source package for more information.
---
-
-module:set_global();
-
-local prosody = prosody;
-local hosts = prosody.hosts;
-local core_process_stanza = core_process_stanza;
-
-local tostring, type = tostring, type;
-local t_insert = table.insert;
-local xpcall, traceback = xpcall, debug.traceback;
-
-local add_task = require "util.timer".add_task;
-local st = require "util.stanza";
-local initialize_filters = require "util.filters".initialize;
-local nameprep = require "util.encodings".stringprep.nameprep;
-local new_xmpp_stream = require "util.xmppstream".new;
-local s2s_new_incoming = require "core.s2smanager".new_incoming;
-local s2s_new_outgoing = require "core.s2smanager".new_outgoing;
-local s2s_destroy_session = require "core.s2smanager".destroy_session;
-local s2s_mark_connected = require "core.s2smanager".mark_connected;
-local uuid_gen = require "util.uuid".generate;
-local cert_verify_identity = require "util.x509".verify_identity;
-
-local s2sout = module:require("s2sout");
-
-local connect_timeout = module:get_option_number("s2s_timeout", 60);
-
-local sessions = module:shared("sessions");
-
-local log = module._log;
-
---- Handle stanzas to remote domains
-
-local bouncy_stanzas = { message = true, presence = true, iq = true };
-local function bounce_sendq(session, reason)
-	local sendq = session.sendq;
-	if not sendq then return; end
-	session.log("info", "sending error replies for "..#sendq.." queued stanzas because of failed outgoing connection to "..tostring(session.to_host));
-	local dummy = {
-		type = "s2sin";
-		send = function(s)
-			(session.log or log)("error", "Replying to to an s2s error reply, please report this! Traceback: %s", traceback());
-		end;
-		dummy = true;
-	};
-	for i, data in ipairs(sendq) do
-		local reply = data[2];
-		if reply and not(reply.attr.xmlns) and bouncy_stanzas[reply.name] then
-			reply.attr.type = "error";
-			reply:tag("error", {type = "cancel"})
-				:tag("remote-server-not-found", {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}):up();
-			if reason then
-				reply:tag("text", {xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"})
-					:text("Server-to-server connection failed: "..reason):up();
-			end
-			core_process_stanza(dummy, reply);
-		end
-		sendq[i] = nil;
-	end
-	session.sendq = nil;
-end
-
-module:hook("route/remote", function (event)
-	local from_host, to_host, stanza = event.from_host, event.to_host, event.stanza;
-	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 (stanza.name ~= "db:verify" or not host.dialback_key) then
-			(host.log or log)("debug", "trying to send over unauthed s2sout to "..to_host);
-
-			-- Queue stanza until we are able to send it
-			if host.sendq then t_insert(host.sendq, {tostring(stanza), stanza.attr.type ~= "error" and stanza.attr.type ~= "result" and st.reply(stanza)});
-			else host.sendq = { {tostring(stanza), stanza.attr.type ~= "error" and stanza.attr.type ~= "result" and st.reply(stanza)} }; end
-			host.log("debug", "stanza [%s] queued ", stanza.name);
-			return true;
-		elseif host.type == "local" or host.type == "component" then
-			log("error", "Trying to send a stanza to ourselves??")
-			log("error", "Traceback: %s", traceback());
-			log("error", "Stanza: %s", tostring(stanza));
-			return false;
-		else
-			(host.log or log)("debug", "going to send stanza to "..to_host.." from "..from_host);
-			-- FIXME
-			if host.from_host ~= from_host then
-				log("error", "WARNING! This might, possibly, be a bug, but it might not...");
-				log("error", "We are going to send from %s instead of %s", tostring(host.from_host), tostring(from_host));
-			end
-			host.sends2s(stanza);
-			host.log("debug", "stanza sent over "..host.type);
-			return true;
-		end
-	end
-end, 200);
-
-module:hook("route/remote", function (event)
-	local from_host, to_host, stanza = event.from_host, event.to_host, event.stanza;
-	log("debug", "opening a new outgoing connection for this stanza");
-	local host_session = s2s_new_outgoing(from_host, to_host);
-
-	-- Store in buffer
-	host_session.bounce_sendq = bounce_sendq;
-	host_session.sendq = { {tostring(stanza), stanza.attr.type ~= "error" and stanza.attr.type ~= "result" and st.reply(stanza)} };
-	log("debug", "stanza [%s] queued until connection complete", tostring(stanza.name));
-	s2sout.initiate_connection(host_session);
-	if (not host_session.connecting) and (not host_session.conn) then
-		log("warn", "Connection to %s failed already, destroying session...", to_host);
-		s2s_destroy_session(host_session, "Connection failed");
-		return false;
-	end
-	return true;
-end, 100);
-
---- Helper to check that a session peer's certificate is valid
-local function check_cert_status(session)
-	local conn = session.conn:socket()
-	local cert
-	if conn.getpeercertificate then
-		cert = conn:getpeercertificate()
-	end
-
-	if cert then
-		local chain_valid, errors = conn:getpeerverification()
-		-- Is there any interest in printing out all/the number of errors here?
-		if not chain_valid then
-			(session.log or log)("debug", "certificate chain validation result: invalid");
-			for depth, t in ipairs(errors) do
-				(session.log or log)("debug", "certificate error(s) at depth %d: %s", depth-1, table.concat(t, ", "))
-			end
-			session.cert_chain_status = "invalid";
-		else
-			(session.log or log)("debug", "certificate chain validation result: valid");
-			session.cert_chain_status = "valid";
-
-			local host = session.direction == "incoming" and session.from_host or session.to_host
-
-			-- We'll go ahead and verify the asserted identity if the
-			-- connecting server specified one.
-			if host then
-				if cert_verify_identity(host, "xmpp-server", cert) then
-					session.cert_identity_status = "valid"
-				else
-					session.cert_identity_status = "invalid"
-				end
-			end
-		end
-	end
-end
-
---- XMPP stream event handlers
-
-local stream_callbacks = { default_ns = "jabber:server", handlestanza =  core_process_stanza };
-
-local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
-
-function stream_callbacks.streamopened(session, attr)
-	local send = session.sends2s;
-	
-	-- TODO: #29: SASL/TLS on s2s streams
-	session.version = tonumber(attr.version) or 0;
-	
-	-- TODO: Rename session.secure to session.encrypted
-	if session.secure == false then
-		session.secure = true;
-	end
-
-	if session.direction == "incoming" then
-		-- Send a reply stream header
-		
-		-- Validate to/from
-		local to, from = nameprep(attr.to), nameprep(attr.from);
-		if not to and attr.to then -- COMPAT: Some servers do not reliably set 'to' (especially on stream restarts)
-			session:close({ condition = "improper-addressing", text = "Invalid 'to' address" });
-			return;
-		end
-		if not from and attr.from then -- COMPAT: Some servers do not reliably set 'from' (especially on stream restarts)
-			session:close({ condition = "improper-addressing", text = "Invalid 'from' address" });
-			return;
-		end
-		
-		-- Set session.[from/to]_host if they have not been set already and if
-		-- this session isn't already authenticated
-		if session.type == "s2sin_unauthed" and from and not session.from_host then
-			session.from_host = from;
-		elseif from ~= session.from_host then
-			session:close({ condition = "improper-addressing", text = "New stream 'from' attribute does not match original" });
-			return;
-		end
-		if session.type == "s2sin_unauthed" and to and not session.to_host then
-			session.to_host = to;
-		elseif to ~= session.to_host then
-			session:close({ condition = "improper-addressing", text = "New stream 'to' attribute does not match original" });
-			return;
-		end
-		
-		session.streamid = uuid_gen();
-		(session.log or log)("debug", "Incoming s2s received %s", st.stanza("stream:stream", attr):top_tag());
-		if session.to_host then
-			if not hosts[session.to_host] then
-				-- Attempting to connect to a host we don't serve
-				session:close({
-					condition = "host-unknown";
-					text = "This host does not serve "..session.to_host
-				});
-				return;
-			elseif hosts[session.to_host].disallow_s2s then
-				-- Attempting to connect to a host that disallows s2s
-				session:close({
-					condition = "policy-violation";
-					text = "Server-to-server communication is not allowed to this host";
-				});
-				return;
-			end
-		end
-
-		if session.secure and not session.cert_chain_status then check_cert_status(session); end
-
-		send("<?xml version='1.0'?>");
-		send(st.stanza("stream:stream", { xmlns='jabber:server', ["xmlns:db"]='jabber:server:dialback',
-				["xmlns:stream"]='http://etherx.jabber.org/streams', id=session.streamid, from=session.to_host, to=session.from_host, version=(session.version > 0 and "1.0" or nil) }):top_tag());
-		if session.version >= 1.0 then
-			local features = st.stanza("stream:features");
-			
-			if session.to_host then
-				hosts[session.to_host].events.fire_event("s2s-stream-features", { origin = session, features = features });
-			else
-				(session.log or log)("warn", "No 'to' on stream header from %s means we can't offer any features", session.from_host or "unknown host");
-			end
-			
-			log("debug", "Sending stream features: %s", tostring(features));
-			send(features);
-		end
-	elseif session.direction == "outgoing" then
-		-- If we are just using the connection for verifying dialback keys, we won't try and auth it
-		if not attr.id then error("stream response did not give us a streamid!!!"); end
-		session.streamid = attr.id;
-
-		if session.secure and not session.cert_chain_status then check_cert_status(session); end
-
-		-- Send unauthed buffer
-		-- (stanzas which are fine to send before dialback)
-		-- Note that this is *not* the stanza queue (which
-		-- we can only send if auth succeeds) :)
-		local send_buffer = session.send_buffer;
-		if send_buffer and #send_buffer > 0 then
-			log("debug", "Sending s2s send_buffer now...");
-			for i, data in ipairs(send_buffer) do
-				session.sends2s(tostring(data));
-				send_buffer[i] = nil;
-			end
-		end
-		session.send_buffer = nil;
-	
-		-- If server is pre-1.0, don't wait for features, just do dialback
-		if session.version < 1.0 then
-			if not session.dialback_verifying then
-				hosts[session.from_host].events.fire_event("s2s-authenticate-legacy", { origin = session });
-			else
-				s2s_mark_connected(session);
-			end
-		end
-	end
-	session.notopen = nil;
-	session.send = function(stanza) prosody.events.fire_event("route/remote", { from_host = session.to_host, to_host = session.from_host, stanza = stanza}) end;
-end
-
-function stream_callbacks.streamclosed(session)
-	(session.log or log)("debug", "Received </stream:stream>");
-	session:close();
-end
-
-function stream_callbacks.streamdisconnected(session, err)
-	if err and err ~= "closed" and session.direction == "outgoing" then
-		(session.log or log)("debug", "s2s connection attempt failed: %s", err);
-		if s2sout.attempt_connection(session, err) then
-			(session.log or log)("debug", "...so we're going to try another target");
-			return true; -- Session lives for now
-		end
-	end
-	(session.log or log)("info", "s2s disconnected: %s->%s (%s)", tostring(session.from_host), tostring(session.to_host), tostring(err or "closed"));
-	s2s_destroy_session(session, err);
-end
-
-function stream_callbacks.error(session, error, data)
-	if error == "no-stream" then
-		session:close("invalid-namespace");
-	elseif error == "parse-error" then
-		session.log("debug", "Server-to-server XML parse error: %s", tostring(error));
-		session:close("not-well-formed");
-	elseif error == "stream-error" then
-		local condition, text = "undefined-condition";
-		for child in data:children() do
-			if child.attr.xmlns == xmlns_xmpp_streams then
-				if child.name ~= "text" then
-					condition = child.name;
-				else
-					text = child:get_text();
-				end
-				if condition ~= "undefined-condition" and text then
-					break;
-				end
-			end
-		end
-		text = condition .. (text and (" ("..text..")") or "");
-		session.log("info", "Session closed by remote with error: %s", text);
-		session:close(nil, text);
-	end
-end
-
-local function handleerr(err) log("error", "Traceback[s2s]: %s: %s", tostring(err), traceback()); end
-function stream_callbacks.handlestanza(session, stanza)
-	if stanza.attr.xmlns == "jabber:client" then --COMPAT: Prosody pre-0.6.2 may send jabber:client
-		stanza.attr.xmlns = nil;
-	end
-	stanza = session.filter("stanzas/in", stanza);
-	if stanza then
-		return xpcall(function () return core_process_stanza(session, stanza) end, handleerr);
-	end
-end
-
-local listener = {};
-
---- Session methods
-local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
-local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
-local function session_close(session, reason, remote_reason)
-	local log = session.log or log;
-	if session.conn then
-		if session.notopen then
-			session.sends2s("<?xml version='1.0'?>");
-			session.sends2s(st.stanza("stream:stream", default_stream_attr):top_tag());
-		end
-		if reason then
-			if type(reason) == "string" then -- assume stream error
-				log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, reason);
-				session.sends2s(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }));
-			elseif type(reason) == "table" then
-				if reason.condition then
-					local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up();
-					if reason.text then
-						stanza:tag("text", stream_xmlns_attr):text(reason.text):up();
-					end
-					if reason.extra then
-						stanza:add_child(reason.extra);
-					end
-					log("info", "Disconnecting %s[%s], <stream:error> is: %s", session.host or "(unknown host)", session.type, tostring(stanza));
-					session.sends2s(stanza);
-				elseif reason.name then -- a stanza
-					log("info", "Disconnecting %s->%s[%s], <stream:error> is: %s", session.from_host or "(unknown host)", session.to_host or "(unknown host)", session.type, tostring(reason));
-					session.sends2s(reason);
-				end
-			end
-		end
-		session.sends2s("</stream:stream>");
-		if session.notopen or not session.conn:close() then
-			session.conn:close(true); -- Force FIXME: timer?
-		end
-		session.conn:close();
-		listener.ondisconnect(session.conn, remote_reason or (reason and (reason.text or reason.condition)) or reason or "stream closed");
-	end
-end
-
--- Session initialization logic shared by incoming and outgoing
-local function initialize_session(session)
-	local stream = new_xmpp_stream(session, stream_callbacks);
-	session.stream = stream;
-	
-	session.notopen = true;
-		
-	function session.reset_stream()
-		session.notopen = true;
-		session.stream:reset();
-	end
-	
-	local filter = session.filter;
-	function session.data(data)
-		data = filter("bytes/in", data);
-		if data then
-			local ok, err = stream:feed(data);
-			if ok then return; end
-			(session.log or log)("warn", "Received invalid XML: %s", data);
-			(session.log or log)("warn", "Problem was: %s", err);
-			session:close("not-well-formed");
-		end
-	end
-
-	session.close = session_close;
-
-	local handlestanza = stream_callbacks.handlestanza;
-	function session.dispatch_stanza(session, stanza)
-		return handlestanza(session, stanza);
-	end
-
-	local conn = session.conn;
-	add_task(connect_timeout, function ()
-		if session.conn ~= conn or session.connecting
-		or session.type == "s2sin" or session.type == "s2sout" then
-			return; -- Ok, we're connect[ed|ing]
-		end
-		-- Not connected, need to close session and clean up
-		(session.log or log)("debug", "Destroying incomplete session %s->%s due to inactivity",
-		session.from_host or "(unknown)", session.to_host or "(unknown)");
-		session:close("connection-timeout");
-	end);
-end
-
-function listener.onconnect(conn)
-	if not sessions[conn] then -- May be an existing outgoing session
-		local session = s2s_new_incoming(conn);
-		sessions[conn] = session;
-		session.log("debug", "Incoming s2s connection");
-
-		local filter = initialize_filters(session);
-		local w = conn.write;
-		session.sends2s = function (t)
-			log("debug", "sending: %s", t.top_tag and t:top_tag() or t:match("^([^>]*>?)"));
-			if t.name then
-				t = filter("stanzas/out", t);
-			end
-			if t then
-				t = filter("bytes/out", tostring(t));
-				if t then
-					return w(conn, t);
-				end
-			end
-		end
-	
-		initialize_session(session);
-	end
-end
-
-function listener.onincoming(conn, data)
-	local session = sessions[conn];
-	if session then
-		session.data(data);
-	end
-end
-	
-function listener.onstatus(conn, status)
-	if status == "ssl-handshake-complete" then
-		local session = sessions[conn];
-		if session and session.direction == "outgoing" then
-			session.log("debug", "Sending stream header...");
-			session:open_stream(session.from_host, session.to_host);
-		end
-	end
-end
-
-function listener.ondisconnect(conn, err)
-	local session = sessions[conn];
-	if session then
-		if stream_callbacks.streamdisconnected(session, err) then
-			return; -- Connection lives, for now
-		end
-	end
-	sessions[conn] = nil;
-end
-
-function listener.register_outgoing(conn, session)
-	session.direction = "outgoing";
-	sessions[conn] = session;
-	initialize_session(session);
-end
-
-s2sout.set_listener(listener);
-
-module:add_item("net-provider", {
-	name = "s2s";
-	listener = listener;
-	default_port = 5269;
-	encryption = "starttls";
-	multiplex = {
-		pattern = "^<.*:stream.*%sxmlns%s*=%s*(['\"])jabber:server%1.*>";
-	};
-});
-
diff --git a/plugins/s2s/s2sout.lib.lua b/plugins/s2s/s2sout.lib.lua
deleted file mode 100644
index f3496597..00000000
--- a/plugins/s2s/s2sout.lib.lua
+++ /dev/null
@@ -1,352 +0,0 @@
--- Prosody IM
--- Copyright (C) 2008-2010 Matthew Wild
--- Copyright (C) 2008-2010 Waqas Hussain
--- 
--- This project is MIT/X11 licensed. Please see the
--- COPYING file in the source package for more information.
---
-
---- Module containing all the logic for connecting to a remote server
-
-local portmanager = require "core.portmanager";
-local wrapclient = require "net.server".wrapclient;
-local initialize_filters = require "util.filters".initialize;
-local idna_to_ascii = require "util.encodings".idna.to_ascii;
-local new_ip = require "util.ip".new_ip;
-local rfc3484_dest = require "util.rfc3484".destination;
-local socket = require "socket";
-local adns = require "net.adns";
-local dns = require "net.dns";
-local t_insert, t_sort, ipairs = table.insert, table.sort, ipairs;
-local st = require "util.stanza";
-
-local s2s_destroy_session = require "core.s2smanager".destroy_session;
-
-local log = module._log;
-
-local sources = {};
-
-local max_dns_depth = module:get_option_number("dns_max_depth", 3);
-
-local s2sout = {};
-
-local s2s_listener;
-
-
-function s2sout.set_listener(listener)
-	s2s_listener = listener;
-end
-
-local function compare_srv_priorities(a,b)
-	return a.priority < b.priority or (a.priority == b.priority and a.weight > b.weight);
-end
-
-local function session_open_stream(session, from, to)
-	session.sends2s(st.stanza("stream:stream", {
-		xmlns='jabber:server', ["xmlns:db"]='jabber:server:dialback',
-		["xmlns:stream"]='http://etherx.jabber.org/streams',
-		from=from, to=to, version='1.0', ["xml:lang"]='en'}):top_tag());
-end
-
-function s2sout.initiate_connection(host_session)
-	initialize_filters(host_session);
-	host_session.open_stream = session_open_stream;
-	
-	-- Kick the connection attempting machine into life
-	if not s2sout.attempt_connection(host_session) then
-		-- Intentionally not returning here, the
-		-- session is needed, connected or not
-		s2s_destroy_session(host_session);
-	end
-	
-	if not host_session.sends2s then
-		-- A sends2s which buffers data (until the stream is opened)
-		-- note that data in this buffer will be sent before the stream is authed
-		-- and will not be ack'd in any way, successful or otherwise
-		local buffer;
-		function host_session.sends2s(data)
-			if not buffer then
-				buffer = {};
-				host_session.send_buffer = buffer;
-			end
-			log("debug", "Buffering data on unconnected s2sout to %s", tostring(host_session.to_host));
-			buffer[#buffer+1] = data;
-			log("debug", "Buffered item %d: %s", #buffer, tostring(data));
-		end
-	end
-end
-
-function s2sout.attempt_connection(host_session, err)
-	local from_host, to_host = host_session.from_host, host_session.to_host;
-	local connect_host, connect_port = to_host and 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;
-		local handle;
-		handle = adns.lookup(function (answer)
-			handle = nil;
-			host_session.connecting = nil;
-			if answer then
-				log("debug", to_host.." has SRV records, handling...");
-				local srv_hosts = {};
-				host_session.srv_hosts = srv_hosts;
-				for _, record in ipairs(answer) do
-					t_insert(srv_hosts, record.srv);
-				end
-				if #srv_hosts == 1 and srv_hosts[1].target == "." then
-					log("debug", to_host.." does not provide a XMPP service");
-					s2s_destroy_session(host_session, err); -- Nothing to see here
-					return;
-				end
-				t_sort(srv_hosts, compare_srv_priorities);
-				
-				local srv_choice = srv_hosts[1];
-				host_session.srv_choice = 1;
-				if srv_choice then
-					connect_host, connect_port = srv_choice.target or to_host, srv_choice.port or connect_port;
-					log("debug", "Best record found, will connect to %s:%d", connect_host, connect_port);
-				end
-			else
-				log("debug", to_host.." has no SRV records, falling back to A");
-			end
-			-- Try with SRV, or just the plain hostname if no SRV
-			local ok, err = s2sout.try_connect(host_session, connect_host, connect_port);
-			if not ok then
-				if not s2sout.attempt_connection(host_session, err) then
-					-- No more attempts will be made
-					s2s_destroy_session(host_session, err);
-				end
-			end
-		end, "_xmpp-server._tcp."..connect_host..".", "SRV");
-		
-		return true; -- Attempt in progress
-	elseif host_session.ip_hosts then
-		return s2sout.try_connect(host_session, connect_host, connect_port, err);
-	elseif host_session.srv_hosts and #host_session.srv_hosts > host_session.srv_choice then -- Not our first attempt, and we also have SRV
-		host_session.srv_choice = host_session.srv_choice + 1;
-		local srv_choice = host_session.srv_hosts[host_session.srv_choice];
-		connect_host, connect_port = srv_choice.target or to_host, srv_choice.port or connect_port;
-		host_session.log("info", "Connection failed (%s). Attempt #%d: This time to %s:%d", tostring(err), host_session.srv_choice, connect_host, connect_port);
-	else
-		host_session.log("info", "Out of connection options, can't connect to %s", tostring(host_session.to_host));
-		-- We're out of options
-		return false;
-	end
-	
-	if not (connect_host and connect_port) then
-		-- Likely we couldn't resolve DNS
-		log("warn", "Hmm, we're without a host (%s) and port (%s) to connect to for %s, giving up :(", tostring(connect_host), tostring(connect_port), tostring(to_host));
-		return false;
-	end
-
-	return s2sout.try_connect(host_session, connect_host, connect_port);
-end
-
-function s2sout.try_next_ip(host_session)
-	host_session.connecting = nil;
-	host_session.ip_choice = host_session.ip_choice + 1;
-	local ip = host_session.ip_hosts[host_session.ip_choice];
-	local ok, err= s2sout.make_connect(host_session, ip.ip, ip.port);
-	if not ok then
-		if not s2sout.attempt_connection(host_session, err or "closed") then
-			err = err and (": "..err) or "";
-			s2s_destroy_session(host_session, "Connection failed"..err);
-		end
-	end
-end
-
-function s2sout.try_connect(host_session, connect_host, connect_port, err)
-	host_session.connecting = true;
-
-	if not err then
-		local IPs = {};
-		host_session.ip_hosts = IPs;
-		local handle4, handle6;
-		local has_other = false;
-
-		handle4 = adns.lookup(function (reply, err)
-			handle4 = nil;
-
-			-- COMPAT: This is a compromise for all you CNAME-(ab)users :)
-			if not (reply and reply[#reply] and reply[#reply].a) then
-				local count = max_dns_depth;
-				reply = dns.peek(connect_host, "CNAME", "IN");
-				while count > 0 and reply and reply[#reply] and not reply[#reply].a and reply[#reply].cname do
-					log("debug", "Looking up %s (DNS depth is %d)", tostring(reply[#reply].cname), count);
-					reply = dns.peek(reply[#reply].cname, "A", "IN") or dns.peek(reply[#reply].cname, "CNAME", "IN");
-					count = count - 1;
-				end
-			end
-			-- end of CNAME resolving
-
-			if reply and reply[#reply] and reply[#reply].a then
-				for _, ip in ipairs(reply) do
-					log("debug", "DNS reply for %s gives us %s", connect_host, ip.a);
-					IPs[#IPs+1] = new_ip(ip.a, "IPv4");
-				end
-			end
-
-			if has_other then
-				if #IPs > 0 then
-					rfc3484_dest(host_session.ip_hosts, sources);
-					for i = 1, #IPs do
-						IPs[i] = {ip = IPs[i], port = connect_port};
-					end
-					host_session.ip_choice = 0;
-					s2sout.try_next_ip(host_session);
-				else
-					log("debug", "DNS lookup failed to get a response for %s", connect_host);
-					host_session.ip_hosts = nil;
-					if not s2sout.attempt_connection(host_session, "name resolution failed") then -- Retry if we can
-						log("debug", "No other records to try for %s - destroying", host_session.to_host);
-						err = err and (": "..err) or "";
-						s2s_destroy_session(host_session, "DNS resolution failed"..err); -- End of the line, we can't
-					end
-				end
-			else
-				has_other = true;
-			end
-		end, connect_host, "A", "IN");
-
-		handle6 = adns.lookup(function (reply, err)
-			handle6 = nil;
-
-			if reply and reply[#reply] and reply[#reply].aaaa then
-				for _, ip in ipairs(reply) do
-					log("debug", "DNS reply for %s gives us %s", connect_host, ip.aaaa);
-					IPs[#IPs+1] = new_ip(ip.aaaa, "IPv6");
-				end
-			end
-
-			if has_other then
-				if #IPs > 0 then
-					rfc3484_dest(host_session.ip_hosts, sources);
-					for i = 1, #IPs do
-						IPs[i] = {ip = IPs[i], port = connect_port};
-					end
-					host_session.ip_choice = 0;
-					s2sout.try_next_ip(host_session);
-				else
-					log("debug", "DNS lookup failed to get a response for %s", connect_host);
-					host_session.ip_hosts = nil;
-					if not s2sout.attempt_connection(host_session, "name resolution failed") then -- Retry if we can
-						log("debug", "No other records to try for %s - destroying", host_session.to_host);
-						err = err and (": "..err) or "";
-						s2s_destroy_session(host_session, "DNS resolution failed"..err); -- End of the line, we can't
-					end
-				end
-			else
-				has_other = true;
-			end
-		end, connect_host, "AAAA", "IN");
-
-		return true;
-	elseif host_session.ip_hosts and #host_session.ip_hosts > host_session.ip_choice then -- Not our first attempt, and we also have IPs left to try
-		s2sout.try_next_ip(host_session);
-	else
-		host_session.ip_hosts = nil;
-		if not s2sout.attempt_connection(host_session, "out of IP addresses") then -- Retry if we can
-			log("debug", "No other records to try for %s - destroying", host_session.to_host);
-			err = err and (": "..err) or "";
-			s2s_destroy_session(host_session, "Connecting failed"..err); -- End of the line, we can't
-			return false;
-		end
-	end
-
-	return true;
-end
-
-function s2sout.make_connect(host_session, connect_host, connect_port)
-	(host_session.log or log)("info", "Beginning new connection attempt to %s ([%s]:%d)", host_session.to_host, connect_host.addr, connect_port);
-	-- Ok, we're going to try to connect
-	
-	local from_host, to_host = host_session.from_host, host_session.to_host;
-	
-	local conn, handler;
-	if connect_host.proto == "IPv4" then
-		conn, handler = socket.tcp();
-	else
-		if not socket.tcp6 then
-			log("warn", "Could not connect to "..to_host..". Your version of lua-socket does not support IPv6");
-			return false, "no-ipv6";
-		end
-		conn, handler = socket.tcp6();
-	end
-	
-	if not conn then
-		log("warn", "Failed to create outgoing connection, system error: %s", handler);
-		return false, handler;
-	end
-
-	conn:settimeout(0);
-	local success, err = conn:connect(connect_host.addr, connect_port);
-	if not success and err ~= "timeout" then
-		log("warn", "s2s connect() to %s (%s:%d) failed: %s", host_session.to_host, connect_host.addr, connect_port, err);
-		return false, err;
-	end
-	
-	conn = wrapclient(conn, connect_host.addr, connect_port, s2s_listener, "*a");
-	host_session.conn = conn;
-	
-	local filter = initialize_filters(host_session);
-	local w, log = conn.write, host_session.log;
-	host_session.sends2s = function (t)
-		log("debug", "sending: %s", (t.top_tag and t:top_tag()) or t:match("^[^>]*>?"));
-		if t.name then
-			t = filter("stanzas/out", t);
-		end
-		if t then
-			t = filter("bytes/out", tostring(t));
-			if t then
-				return w(conn, tostring(t));
-			end
-		end
-	end
-	
-	-- Register this outgoing connection so that xmppserver_listener knows about it
-	-- otherwise it will assume it is a new incoming connection
-	s2s_listener.register_outgoing(conn, host_session);
-	
-	host_session:open_stream(from_host, to_host);
-	
-	log("debug", "Connection attempt in progress...");
-	return true;
-end
-
-module:hook_global("service-added", function (event)
-	if event.name ~= "s2s" then return end
-
-	local s2s_sources = portmanager.get_active_services():get("s2s");
-	if not s2s_sources then
-		module:log("warn", "s2s not listening on any ports, outgoing connections may fail");
-		return;
-	end
-	for source, _ in pairs(s2s_sources) do
-		if source == "*" or source == "0.0.0.0" then
-			if not socket.local_addresses then
-				sources[#sources + 1] = new_ip("0.0.0.0", "IPv4");
-			else
-				for _, addr in ipairs(socket.local_addresses("ipv4", true)) do
-					sources[#sources + 1] = new_ip(addr, "IPv4");
-				end
-			end
-		elseif source == "::" then
-			if not socket.local_addresses then
-				sources[#sources + 1] = new_ip("::", "IPv6");
-			else
-				for _, addr in ipairs(socket.local_addresses("ipv6", true)) do
-					sources[#sources + 1] = new_ip(addr, "IPv6");
-				end
-			end
-		else
-			sources[#sources + 1] = new_ip(source, (source:find(":") and "IPv6") or "IPv4");
-		end
-	end
-end);
-
-return s2sout;