plugins/mod_bosh.lua
author Matthew Wild <mwild1@gmail.com>
Fri, 27 Apr 2012 19:05:03 +0100
changeset 4725 d085db6285db
parent 4697 778eb9405a98
child 4738 e95458712782
permissions -rw-r--r--
mod_bosh: Add routes without trailing-'/', so that both /http-bind and /http-bind/ work again
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-- Prosody IM
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-- Copyright (C) 2008-2010 Matthew Wild
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-- Copyright (C) 2008-2010 Waqas Hussain
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-- 
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-- This project is MIT/X11 licensed. Please see the
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-- COPYING file in the source package for more information.
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--
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module:set_global(); -- Global module
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local hosts = _G.hosts;
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local new_xmpp_stream = require "util.xmppstream".new;
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local httpserver = require "net.httpserver";
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local sm = require "core.sessionmanager";
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local sm_destroy_session = sm.destroy_session;
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local new_uuid = require "util.uuid".generate;
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local fire_event = prosody.events.fire_event;
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local core_process_stanza = core_process_stanza;
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local st = require "util.stanza";
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local logger = require "util.logger";
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local log = logger.init("mod_bosh");
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local timer = require "util.timer";
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local xmlns_streams = "http://etherx.jabber.org/streams";
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local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
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local xmlns_bosh = "http://jabber.org/protocol/httpbind"; -- (hard-coded into a literal in session.send)
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local stream_callbacks = {
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	stream_ns = xmlns_bosh, stream_tag = "body", default_ns = "jabber:client" };
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local BOSH_DEFAULT_HOLD = module:get_option_number("bosh_default_hold", 1);
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local BOSH_DEFAULT_INACTIVITY = module:get_option_number("bosh_max_inactivity", 60);
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local BOSH_DEFAULT_POLLING = module:get_option_number("bosh_max_polling", 5);
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local BOSH_DEFAULT_REQUESTS = module:get_option_number("bosh_max_requests", 2);
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local consider_bosh_secure = module:get_option_boolean("consider_bosh_secure");
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local auto_cork = module:get_option_boolean("bosh_auto_cork", false);
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local default_headers = { ["Content-Type"] = "text/xml; charset=utf-8" };
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local cross_domain = module:get_option("cross_domain_bosh", false);
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if cross_domain then
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	default_headers["Access-Control-Allow-Methods"] = "GET, POST, OPTIONS";
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	default_headers["Access-Control-Allow-Headers"] = "Content-Type";
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	default_headers["Access-Control-Max-Age"] = "7200";
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	if cross_domain == true then
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		default_headers["Access-Control-Allow-Origin"] = "*";
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	elseif type(cross_domain) == "table" then
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		cross_domain = table.concat(cross_domain, ", ");
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	end
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	if type(cross_domain) == "string" then
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		default_headers["Access-Control-Allow-Origin"] = cross_domain;
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	end
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end
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local trusted_proxies = module:get_option_set("trusted_proxies", {"127.0.0.1"})._items;
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local function get_ip_from_request(request)
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	local ip = request.conn:ip();
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	local forwarded_for = request.headers["x-forwarded-for"];
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	if forwarded_for then
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		forwarded_for = forwarded_for..", "..ip;
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		for forwarded_ip in forwarded_for:gmatch("[^%s,]+") do
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			if not trusted_proxies[forwarded_ip] then
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				ip = forwarded_ip;
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			end
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		end
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	end
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	return ip;
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end
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local t_insert, t_remove, t_concat = table.insert, table.remove, table.concat;
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local os_time = os.time;
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local sessions = {};
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local inactive_sessions = {}; -- Sessions which have no open requests
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-- Used to respond to idle sessions (those with waiting requests)
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local waiting_requests = {};
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function on_destroy_request(request)
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	log("debug", "Request destroyed: %s", tostring(request));
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	waiting_requests[request] = nil;
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	local session = sessions[request.context.sid];
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	if session then
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		local requests = session.requests;
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		for i, r in ipairs(requests) do
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			if r == request then
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				t_remove(requests, i);
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				break;
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			end
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		end
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		-- If this session now has no requests open, mark it as inactive
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		local max_inactive = session.bosh_max_inactive;
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		if max_inactive and #requests == 0 then
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			inactive_sessions[session] = os_time() + max_inactive;
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			(session.log or log)("debug", "BOSH session marked as inactive (for %ds)", max_inactive);
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		end
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	end
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end
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local function handle_GET(request)
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	return [[<html><body>
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	<p>It works! Now point your BOSH client to this URL to connect to Prosody.</p>
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	<p>For more information see <a href="http://prosody.im/doc/setting_up_bosh">Prosody: Setting up BOSH</a>.</p>
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</body></html>]];
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end
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function handle_OPTIONS(request)
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	local headers = {};
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	for k,v in pairs(default_headers) do headers[k] = v; end
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	headers["Content-Type"] = nil;
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	return { headers = headers, body = "" };
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end
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function handle_POST(event)
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	log("debug", "Handling new request %s: %s\n----------", tostring(event.request), tostring(event.request.body));
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	local request, response = event.request, event.response;
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	response.on_destroy = on_destroy_request;
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	local body = request.body;
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	local context = { request = request, response = response, notopen = true };
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	local stream = new_xmpp_stream(context, stream_callbacks);
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	response.context = context;
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	-- stream:feed() calls the stream_callbacks, so all stanzas in
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	-- the body are processed in this next line before it returns.
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	-- In particular, the streamopened() stream callback is where
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	-- much of the session logic happens, because it's where we first
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	-- get to see the 'sid' of this request.
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	stream:feed(body);
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	-- Stanzas (if any) in the request have now been processed, and
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	-- we take care of the high-level BOSH logic here, including
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	-- giving a response or putting the request "on hold".
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	local session = sessions[context.sid];
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	if session then
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		-- Session was marked as inactive, since we have
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		-- a request open now, unmark it
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		if inactive_sessions[session] and #session.requests > 0 then
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			inactive_sessions[session] = nil;
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		end
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		local r = session.requests;
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		log("debug", "Session %s has %d out of %d requests open", context.sid, #r, session.bosh_hold);
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		log("debug", "and there are %d things in the send_buffer:", #session.send_buffer);
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		for i, thing in ipairs(session.send_buffer) do
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			log("debug", "    %s", tostring(thing));
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		end
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		if #r > session.bosh_hold then
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			-- We are holding too many requests, send what's in the buffer,
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			log("debug", "We are holding too many requests, so...");
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			if #session.send_buffer > 0 then
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				log("debug", "...sending what is in the buffer")
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				session.send(t_concat(session.send_buffer));
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				session.send_buffer = {};
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			else
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				-- or an empty response
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				log("debug", "...sending an empty response");
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				session.send("");
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			end
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		elseif #session.send_buffer > 0 then
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			log("debug", "Session has data in the send buffer, will send now..");
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			local resp = t_concat(session.send_buffer);
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			session.send_buffer = {};
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			session.send(resp);
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		end
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		if not response.finished then
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			-- We're keeping this request open, to respond later
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			log("debug", "Have nothing to say, so leaving request unanswered for now");
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			if session.bosh_wait then
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				waiting_requests[response] = os_time() + session.bosh_wait;
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			end
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		end
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		if session.bosh_terminate then
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			session.log("debug", "Closing session with %d requests open", #session.requests);
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			session:close();
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			return nil;
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		else
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			return true; -- Inform httpserver we shall reply later
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		end
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	end
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end
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local function bosh_reset_stream(session) session.notopen = true; end
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local stream_xmlns_attr = { xmlns = "urn:ietf:params:xml:ns:xmpp-streams" };
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local function bosh_close_stream(session, reason)
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	(session.log or log)("info", "BOSH client disconnected");
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	local close_reply = st.stanza("body", { xmlns = xmlns_bosh, type = "terminate",
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		["xmlns:stream"] = xmlns_streams });
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	if reason then
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		close_reply.attr.condition = "remote-stream-error";
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		if type(reason) == "string" then -- assume stream error
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			close_reply:tag("stream:error")
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				:tag(reason, {xmlns = xmlns_xmpp_streams});
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		elseif type(reason) == "table" then
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			if reason.condition then
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				close_reply:tag("stream:error")
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					:tag(reason.condition, stream_xmlns_attr):up();
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				if reason.text then
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					close_reply:tag("text", stream_xmlns_attr):text(reason.text):up();
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				end
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				if reason.extra then
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					close_reply:add_child(reason.extra);
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				end
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			elseif reason.name then -- a stanza
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				close_reply = reason;
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			end
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		end
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		log("info", "Disconnecting client, <stream:error> is: %s", tostring(close_reply));
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   221
	end
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   222
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	local response_body = tostring(close_reply);
684
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   224
	for _, held_request in ipairs(session.requests) do
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		held_request.headers = default_headers;
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		held_request:send(response_body);
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	end
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	sessions[session.sid]  = nil;
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	inactive_sessions[session] = nil;
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   230
	sm_destroy_session(session);
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   231
end
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   233
-- Handle the <body> tag in the request payload.
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function stream_callbacks.streamopened(context, attr)
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	local request, response = context.request, context.response;
4327
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   236
	local sid = attr.sid;
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	log("debug", "BOSH body open (sid: %s)", sid or "<none>");
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	if not sid then
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   239
		-- New session request
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		context.notopen = nil; -- Signals that we accept this opening tag
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   241
		
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		-- TODO: Sanity checks here (rid, to, known host, etc.)
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   243
		if not hosts[attr.to] then
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   244
			-- Unknown host
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			log("debug", "BOSH client tried to connect to unknown host: %s", tostring(attr.to));
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6d782b1fcc8a mod_bosh: Fix traceback when initiating a BOSH session to an unknown host
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   246
			local close_reply = st.stanza("body", { xmlns = xmlns_bosh, type = "terminate",
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e4d88f4a780c mod_bosh: s/xmlns:streams/xmlns:stream/ - fixes #265 (thanks Tim)
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   247
				["xmlns:stream"] = xmlns_streams, condition = "host-unknown" });
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			response:send(tostring(close_reply));
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   249
			return;
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		end
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		-- New session
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8e77a39826c2 mod_bosh: No need to tostring() uuids now
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		sid = new_uuid();
3071
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		local session = {
3460
742f6e5a4066 mod_bosh: Don't adjust rid when creating a session, as this is no longer necessary and causes a log message ('rid too large') to be erroneously printed, fixes #203
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   255
			type = "c2s_unauthed", conn = {}, sid = sid, rid = tonumber(attr.rid), host = attr.to,
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			bosh_version = attr.ver, bosh_wait = attr.wait, streamid = sid,
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			bosh_hold = BOSH_DEFAULT_HOLD, bosh_max_inactive = BOSH_DEFAULT_INACTIVITY,
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   258
			requests = { }, send_buffer = {}, reset_stream = bosh_reset_stream,
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   259
			close = bosh_close_stream, dispatch_stanza = core_process_stanza,
3472
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			log = logger.init("bosh"..sid),	secure = consider_bosh_secure or request.secure,
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			ip = get_ip_from_request(request);
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   262
		};
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		sessions[sid] = session;
1109
bb21eb3cd364 mod_bosh: Give BOSH sessions a logger (thanks Florob)
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diff changeset
   264
		
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   265
		session.log("debug", "BOSH session created for request from %s", session.ip);
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		log("info", "New BOSH session, assigned it sid '%s'", sid);
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		local r, send_buffer = session.requests, session.send_buffer;
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		function session.send(s)
3322
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diff changeset
   269
			-- We need to ensure that outgoing stanzas have the jabber:client xmlns
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   270
			if s.attr and not s.attr.xmlns then
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   271
				s = st.clone(s);
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   272
				s.attr.xmlns = "jabber:client";
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   273
			end
2099
73e083d01449 mod_bosh: Don't log response XML
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   274
			--log("debug", "Sending BOSH data: %s", tostring(s));
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			local oldest_request = r[1];
4442
bc0a68cae236 mod_bosh: Experimental option 'bosh_auto_cork' which witholds any response to a request until all stanzas in it have been processed.
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   276
			if oldest_request and (not(auto_cork) or waiting_requests[oldest_request]) then
2099
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   277
				log("debug", "We have an open request, so sending on that");
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   278
				oldest_request.headers = default_headers;
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   279
				oldest_request:send(t_concat({
4223
9fb6e8ec15ed mod_bosh: Fix terminate logic - process any stanzas in a terminating request, and add type='terminate' to any responses generated by those stanzas. Finally, close all remaining open requests with type='terminate' and close the session. Fixes #211 (thanks Maranda + waqas).
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parents: 4102
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   280
					"<body xmlns='http://jabber.org/protocol/httpbind' ",
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   281
					session.bosh_terminate and "type='terminate' " or "",
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   282
					"sid='", sid, "' xmlns:stream = 'http://etherx.jabber.org/streams'>",
9fb6e8ec15ed mod_bosh: Fix terminate logic - process any stanzas in a terminating request, and add type='terminate' to any responses generated by those stanzas. Finally, close all remaining open requests with type='terminate' and close the session. Fixes #211 (thanks Maranda + waqas).
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   283
					tostring(s),
9fb6e8ec15ed mod_bosh: Fix terminate logic - process any stanzas in a terminating request, and add type='terminate' to any responses generated by those stanzas. Finally, close all remaining open requests with type='terminate' and close the session. Fixes #211 (thanks Maranda + waqas).
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   284
					"</body>"
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diff changeset
   285
				}));
636
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   286
			elseif s ~= "" then
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   287
				log("debug", "Saved to send buffer because there are %d open requests", #r);
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   288
				-- Hmm, no requests are open :(
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   289
				t_insert(session.send_buffer, tostring(s));
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parents:
diff changeset
   290
				log("debug", "There are now %d things in the send_buffer", #session.send_buffer);
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   291
			end
4102
9df4e61c260b mod_bosh: Return true from send()
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   292
			return true;
636
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		end
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   294
		
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   295
		-- Send creation response
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   296
		
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   297
		local features = st.stanza("stream:features");
2608
68c43aaf681f mod_bosh: Fire stream-features event using new events API.
Waqas Hussain <waqas20@gmail.com>
parents: 2486
diff changeset
   298
		hosts[session.host].events.fire_event("stream-features", { origin = session, features = features });
636
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   299
		fire_event("stream-features", session, features);
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   300
		--xmpp:version='1.0' xmlns:xmpp='urn:xmpp:xbosh'
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diff changeset
   301
		local body = st.stanza("body", { xmlns = xmlns_bosh,
3725
926ece7d0e67 mod_bosh: Fixes to the session creation response - add mandatory 'wait' attribute, remove optional 'maxpause' which we don't support, and reformat the code to prevent long lines and wacky indentation. Fixes #219.
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parents: 3707
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   302
			wait = attr.wait,
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diff changeset
   303
			inactivity = tostring(BOSH_DEFAULT_INACTIVITY),
926ece7d0e67 mod_bosh: Fixes to the session creation response - add mandatory 'wait' attribute, remove optional 'maxpause' which we don't support, and reformat the code to prevent long lines and wacky indentation. Fixes #219.
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diff changeset
   304
			polling = tostring(BOSH_DEFAULT_POLLING),
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diff changeset
   305
			requests = tostring(BOSH_DEFAULT_REQUESTS),
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parents: 3707
diff changeset
   306
			hold = tostring(session.bosh_hold),
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diff changeset
   307
			sid = sid, authid = sid,
926ece7d0e67 mod_bosh: Fixes to the session creation response - add mandatory 'wait' attribute, remove optional 'maxpause' which we don't support, and reformat the code to prevent long lines and wacky indentation. Fixes #219.
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diff changeset
   308
			ver  = '1.6', from = session.host,
926ece7d0e67 mod_bosh: Fixes to the session creation response - add mandatory 'wait' attribute, remove optional 'maxpause' which we don't support, and reformat the code to prevent long lines and wacky indentation. Fixes #219.
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diff changeset
   309
			secure = 'true', ["xmpp:version"] = "1.0",
926ece7d0e67 mod_bosh: Fixes to the session creation response - add mandatory 'wait' attribute, remove optional 'maxpause' which we don't support, and reformat the code to prevent long lines and wacky indentation. Fixes #219.
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diff changeset
   310
			["xmlns:xmpp"] = "urn:xmpp:xbosh",
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diff changeset
   311
			["xmlns:stream"] = "http://etherx.jabber.org/streams"
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diff changeset
   312
		}):add_child(features);
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diff changeset
   313
		response.headers = default_headers;
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diff changeset
   314
		response:send(tostring(body));
2473
3f4cfa375bd6 mod_bosh: Trailing whitespace
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parents: 2467
diff changeset
   315
		
636
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   316
		request.sid = sid;
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   317
		return;
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   318
	end
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
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parents:
diff changeset
   319
	
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   320
	local session = sessions[sid];
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
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parents:
diff changeset
   321
	if not session then
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
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parents:
diff changeset
   322
		-- Unknown sid
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   323
		log("info", "Client tried to use sid '%s' which we don't know about", sid);
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   324
		response.headers = default_headers;
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   325
		response:send(tostring(st.stanza("body", { xmlns = xmlns_bosh, type = "terminate", condition = "item-not-found" })));
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   326
		context.notopen = nil;
636
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   327
		return;
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   328
	end
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   329
	
1663
b30c4d0bbe84 mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents: 1662
diff changeset
   330
	if session.rid then
b30c4d0bbe84 mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents: 1662
diff changeset
   331
		local rid = tonumber(attr.rid);
1664
6587b6c2678e mod_bosh: Calculate rid difference just once
Matthew Wild <mwild1@gmail.com>
parents: 1663
diff changeset
   332
		local diff = rid - session.rid;
6587b6c2678e mod_bosh: Calculate rid difference just once
Matthew Wild <mwild1@gmail.com>
parents: 1663
diff changeset
   333
		if diff > 1 then
1663
b30c4d0bbe84 mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents: 1662
diff changeset
   334
			session.log("warn", "rid too large (means a request was lost). Last rid: %d New rid: %s", session.rid, attr.rid);
1664
6587b6c2678e mod_bosh: Calculate rid difference just once
Matthew Wild <mwild1@gmail.com>
parents: 1663
diff changeset
   335
		elseif diff <= 0 then
1663
b30c4d0bbe84 mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents: 1662
diff changeset
   336
			-- Repeated, ignore
3041
7489ac1d5938 mod_bosh: Fix handling of rids by not dropping requests with repeated rids (assign them their sid instead), and always starting a session with first_rid-1.
Matthew Wild <mwild1@gmail.com>
parents: 3040
diff changeset
   337
			session.log("debug", "rid repeated (on request %s), ignoring: %s (diff %d)", request.id, session.rid, diff);
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   338
			context.notopen = nil;
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   339
			context.ignore = true;
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   340
			context.sid = sid;
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   341
			t_insert(session.requests, response);
1663
b30c4d0bbe84 mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents: 1662
diff changeset
   342
			return;
b30c4d0bbe84 mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents: 1662
diff changeset
   343
		end
b30c4d0bbe84 mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents: 1662
diff changeset
   344
		session.rid = rid;
b30c4d0bbe84 mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents: 1662
diff changeset
   345
	end
b30c4d0bbe84 mod_bosh: Basic handling of rids (more to come)
Matthew Wild <mwild1@gmail.com>
parents: 1662
diff changeset
   346
	
4223
9fb6e8ec15ed mod_bosh: Fix terminate logic - process any stanzas in a terminating request, and add type='terminate' to any responses generated by those stanzas. Finally, close all remaining open requests with type='terminate' and close the session. Fixes #211 (thanks Maranda + waqas).
Matthew Wild <mwild1@gmail.com>
parents: 4102
diff changeset
   347
	if attr.type == "terminate" then
9fb6e8ec15ed mod_bosh: Fix terminate logic - process any stanzas in a terminating request, and add type='terminate' to any responses generated by those stanzas. Finally, close all remaining open requests with type='terminate' and close the session. Fixes #211 (thanks Maranda + waqas).
Matthew Wild <mwild1@gmail.com>
parents: 4102
diff changeset
   348
		-- Client wants to end this session, which we'll do
9fb6e8ec15ed mod_bosh: Fix terminate logic - process any stanzas in a terminating request, and add type='terminate' to any responses generated by those stanzas. Finally, close all remaining open requests with type='terminate' and close the session. Fixes #211 (thanks Maranda + waqas).
Matthew Wild <mwild1@gmail.com>
parents: 4102
diff changeset
   349
		-- after processing any stanzas in this request
9fb6e8ec15ed mod_bosh: Fix terminate logic - process any stanzas in a terminating request, and add type='terminate' to any responses generated by those stanzas. Finally, close all remaining open requests with type='terminate' and close the session. Fixes #211 (thanks Maranda + waqas).
Matthew Wild <mwild1@gmail.com>
parents: 4102
diff changeset
   350
		session.bosh_terminate = true;
9fb6e8ec15ed mod_bosh: Fix terminate logic - process any stanzas in a terminating request, and add type='terminate' to any responses generated by those stanzas. Finally, close all remaining open requests with type='terminate' and close the session. Fixes #211 (thanks Maranda + waqas).
Matthew Wild <mwild1@gmail.com>
parents: 4102
diff changeset
   351
	end
9fb6e8ec15ed mod_bosh: Fix terminate logic - process any stanzas in a terminating request, and add type='terminate' to any responses generated by those stanzas. Finally, close all remaining open requests with type='terminate' and close the session. Fixes #211 (thanks Maranda + waqas).
Matthew Wild <mwild1@gmail.com>
parents: 4102
diff changeset
   352
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   353
	context.notopen = nil; -- Signals that we accept this opening tag
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   354
	t_insert(session.requests, response);
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   355
	context.sid = sid;
4438
7f51186ed28b mod_bosh: Move stream:features sending until after the current request has been added to session.requests. Ensures correct inactivity logic.
Matthew Wild <mwild1@gmail.com>
parents: 4437
diff changeset
   356
7f51186ed28b mod_bosh: Move stream:features sending until after the current request has been added to session.requests. Ensures correct inactivity logic.
Matthew Wild <mwild1@gmail.com>
parents: 4437
diff changeset
   357
	if session.notopen then
7f51186ed28b mod_bosh: Move stream:features sending until after the current request has been added to session.requests. Ensures correct inactivity logic.
Matthew Wild <mwild1@gmail.com>
parents: 4437
diff changeset
   358
		local features = st.stanza("stream:features");
7f51186ed28b mod_bosh: Move stream:features sending until after the current request has been added to session.requests. Ensures correct inactivity logic.
Matthew Wild <mwild1@gmail.com>
parents: 4437
diff changeset
   359
		hosts[session.host].events.fire_event("stream-features", { origin = session, features = features });
7f51186ed28b mod_bosh: Move stream:features sending until after the current request has been added to session.requests. Ensures correct inactivity logic.
Matthew Wild <mwild1@gmail.com>
parents: 4437
diff changeset
   360
		fire_event("stream-features", session, features);
7f51186ed28b mod_bosh: Move stream:features sending until after the current request has been added to session.requests. Ensures correct inactivity logic.
Matthew Wild <mwild1@gmail.com>
parents: 4437
diff changeset
   361
		session.send(features);
7f51186ed28b mod_bosh: Move stream:features sending until after the current request has been added to session.requests. Ensures correct inactivity logic.
Matthew Wild <mwild1@gmail.com>
parents: 4437
diff changeset
   362
		session.notopen = nil;
7f51186ed28b mod_bosh: Move stream:features sending until after the current request has been added to session.requests. Ensures correct inactivity logic.
Matthew Wild <mwild1@gmail.com>
parents: 4437
diff changeset
   363
	end
636
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   364
end
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   365
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   366
function stream_callbacks.handlestanza(context, stanza)
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   367
	if context.ignore then return; end
725
96110075288b Replacing pretty_print() with top_tag() for logging
Matthew Wild <mwild1@gmail.com>
parents: 701
diff changeset
   368
	log("debug", "BOSH stanza received: %s\n", stanza:top_tag());
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   369
	local session = sessions[context.sid];
636
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   370
	if session then
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   371
		if stanza.attr.xmlns == xmlns_bosh then
2959
62a3f824292a mod_bosh: Default stanza namespace should be jabber:client (fixes BOSH to work with recent namespace fix)
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
   372
			stanza.attr.xmlns = nil;
636
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   373
		end
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   374
		core_process_stanza(session, stanza);
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   375
	end
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   376
end
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   377
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   378
function stream_callbacks.error(context, error)
3447
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   379
	log("debug", "Error parsing BOSH request payload; %s", error);
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   380
	if not context.sid then
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   381
		local response = context.response;
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   382
		response.headers = default_headers;
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   383
		response.status_code = 400;
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   384
		request:send();
3447
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   385
		return;
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   386
	end
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   387
	
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   388
	local session = sessions[context.sid];
3447
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   389
	if error == "stream-error" then -- Remote stream error, we close normally
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   390
		session:close();
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   391
	else
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   392
		session:close({ condition = "bad-format", text = "Error processing stream" });
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   393
	end
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   394
end
cc2dc55e66f9 mod_bosh: Add error callback for xmlhandlers, to handle the case of invalid or unusable XML in the request payload
Matthew Wild <mwild1@gmail.com>
parents: 3439
diff changeset
   395
1864
b9389286eece mod_bosh: Fix for 'invalid key to next' error when 2 clients lose connection at the same time
Matthew Wild <mwild1@gmail.com>
parents: 1633
diff changeset
   396
local dead_sessions = {};
636
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   397
function on_timer()
660
b2c4a7ec31c6 Remove some old debugging code from mod_bosh
Matthew Wild <mwild1@gmail.com>
parents: 636
diff changeset
   398
	-- log("debug", "Checking for requests soon to timeout...");
636
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   399
	-- Identify requests timing out within the next few seconds
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   400
	local now = os_time() + 3;
4690
55f690fdc915 mod_bosh: Optimisation, store reply_before value as waiting_requests value (saves a lookup)
Matthew Wild <mwild1@gmail.com>
parents: 4684
diff changeset
   401
	for request, reply_before in pairs(waiting_requests) do
55f690fdc915 mod_bosh: Optimisation, store reply_before value as waiting_requests value (saves a lookup)
Matthew Wild <mwild1@gmail.com>
parents: 4684
diff changeset
   402
		if reply_before <= now then
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   403
			log("debug", "%s was soon to timeout (at %d, now %d), sending empty response", tostring(request), reply_before, now);
636
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   404
			-- Send empty response to let the
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   405
			-- client know we're still here
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   406
			if request.conn then
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   407
				sessions[request.context.sid].send("");
636
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   408
			end
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   409
		end
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   410
	end
679
9506bf204b1a Numerous BOSH improvements... handle client disconnects, either explicit or implicit through inactivity; allow specifying BOSH default parameters through config; fix to prevent prematurely closing request connections in some cases, before they were replied to
Matthew Wild <mwild1@gmail.com>
parents: 660
diff changeset
   411
	
9506bf204b1a Numerous BOSH improvements... handle client disconnects, either explicit or implicit through inactivity; allow specifying BOSH default parameters through config; fix to prevent prematurely closing request connections in some cases, before they were replied to
Matthew Wild <mwild1@gmail.com>
parents: 660
diff changeset
   412
	now = now - 3;
1864
b9389286eece mod_bosh: Fix for 'invalid key to next' error when 2 clients lose connection at the same time
Matthew Wild <mwild1@gmail.com>
parents: 1633
diff changeset
   413
	local n_dead_sessions = 0;
4436
aa79b3767f98 mod_bosh: Store time to destroy session in inactive_sessions, removing dependency on session.bosh_max_inactive in cleanup timer
Matthew Wild <mwild1@gmail.com>
parents: 4379
diff changeset
   414
	for session, close_after in pairs(inactive_sessions) do
aa79b3767f98 mod_bosh: Store time to destroy session in inactive_sessions, removing dependency on session.bosh_max_inactive in cleanup timer
Matthew Wild <mwild1@gmail.com>
parents: 4379
diff changeset
   415
		if close_after < now then
aa79b3767f98 mod_bosh: Store time to destroy session in inactive_sessions, removing dependency on session.bosh_max_inactive in cleanup timer
Matthew Wild <mwild1@gmail.com>
parents: 4379
diff changeset
   416
			(session.log or log)("debug", "BOSH client inactive too long, destroying session at %d", now);
aa79b3767f98 mod_bosh: Store time to destroy session in inactive_sessions, removing dependency on session.bosh_max_inactive in cleanup timer
Matthew Wild <mwild1@gmail.com>
parents: 4379
diff changeset
   417
			sessions[session.sid]  = nil;
679
9506bf204b1a Numerous BOSH improvements... handle client disconnects, either explicit or implicit through inactivity; allow specifying BOSH default parameters through config; fix to prevent prematurely closing request connections in some cases, before they were replied to
Matthew Wild <mwild1@gmail.com>
parents: 660
diff changeset
   418
			inactive_sessions[session] = nil;
4436
aa79b3767f98 mod_bosh: Store time to destroy session in inactive_sessions, removing dependency on session.bosh_max_inactive in cleanup timer
Matthew Wild <mwild1@gmail.com>
parents: 4379
diff changeset
   419
			n_dead_sessions = n_dead_sessions + 1;
aa79b3767f98 mod_bosh: Store time to destroy session in inactive_sessions, removing dependency on session.bosh_max_inactive in cleanup timer
Matthew Wild <mwild1@gmail.com>
parents: 4379
diff changeset
   420
			dead_sessions[n_dead_sessions] = session;
679
9506bf204b1a Numerous BOSH improvements... handle client disconnects, either explicit or implicit through inactivity; allow specifying BOSH default parameters through config; fix to prevent prematurely closing request connections in some cases, before they were replied to
Matthew Wild <mwild1@gmail.com>
parents: 660
diff changeset
   421
		end
9506bf204b1a Numerous BOSH improvements... handle client disconnects, either explicit or implicit through inactivity; allow specifying BOSH default parameters through config; fix to prevent prematurely closing request connections in some cases, before they were replied to
Matthew Wild <mwild1@gmail.com>
parents: 660
diff changeset
   422
	end
1864
b9389286eece mod_bosh: Fix for 'invalid key to next' error when 2 clients lose connection at the same time
Matthew Wild <mwild1@gmail.com>
parents: 1633
diff changeset
   423
b9389286eece mod_bosh: Fix for 'invalid key to next' error when 2 clients lose connection at the same time
Matthew Wild <mwild1@gmail.com>
parents: 1633
diff changeset
   424
	for i=1,n_dead_sessions do
b9389286eece mod_bosh: Fix for 'invalid key to next' error when 2 clients lose connection at the same time
Matthew Wild <mwild1@gmail.com>
parents: 1633
diff changeset
   425
		local session = dead_sessions[i];
b9389286eece mod_bosh: Fix for 'invalid key to next' error when 2 clients lose connection at the same time
Matthew Wild <mwild1@gmail.com>
parents: 1633
diff changeset
   426
		dead_sessions[i] = nil;
b9389286eece mod_bosh: Fix for 'invalid key to next' error when 2 clients lose connection at the same time
Matthew Wild <mwild1@gmail.com>
parents: 1633
diff changeset
   427
		sm_destroy_session(session, "BOSH client silent for over "..session.bosh_max_inactive.." seconds");
b9389286eece mod_bosh: Fix for 'invalid key to next' error when 2 clients lose connection at the same time
Matthew Wild <mwild1@gmail.com>
parents: 1633
diff changeset
   428
	end
3684
bd071e3901dc mod_bosh: Use util.timer for timers instead of server.addtimer.
Waqas Hussain <waqas20@gmail.com>
parents: 3542
diff changeset
   429
	return 1;
636
9c9c671ecc50 Initial mod_bosh, works, kind of, but quite incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
   430
end
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   431
module:add_timer(1, on_timer);
701
dc67e3cffff4 BOSH: Allow BOSH servers to be configured through config file
Matthew Wild <mwild1@gmail.com>
parents: 693
diff changeset
   432
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   433
function module.add_host(module)
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   434
	module:depends("http");
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   435
	module:provides("http", {
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   436
		default_path = "/http-bind";
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   437
		route = {
4725
d085db6285db mod_bosh: Add routes without trailing-'/', so that both /http-bind and /http-bind/ work again
Matthew Wild <mwild1@gmail.com>
parents: 4697
diff changeset
   438
			["GET"] = handle_GET;
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   439
			["GET /"] = handle_GET;
4725
d085db6285db mod_bosh: Add routes without trailing-'/', so that both /http-bind and /http-bind/ work again
Matthew Wild <mwild1@gmail.com>
parents: 4697
diff changeset
   440
			["OPTIONS"] = handle_OPTIONS;
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   441
			["OPTIONS /"] = handle_OPTIONS;
4725
d085db6285db mod_bosh: Add routes without trailing-'/', so that both /http-bind and /http-bind/ work again
Matthew Wild <mwild1@gmail.com>
parents: 4697
diff changeset
   442
			["POST"] = handle_POST;
4692
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   443
			["POST /"] = handle_POST;
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   444
		};
8e7c683d78ca mod_bosh: Large commit to update to mod_http/net.http.server APIs. Becomes a shared module.
Matthew Wild <mwild1@gmail.com>
parents: 4690
diff changeset
   445
	});
2354
5a00668ba0ab mod_bosh: Delay setup until after server is started.
Waqas Hussain <waqas20@gmail.com>
parents: 2099
diff changeset
   446
end