--- a/plugins/mod_bosh.lua Thu Jan 08 02:04:06 2009 +0000
+++ b/plugins/mod_bosh.lua Fri Jan 09 16:33:09 2009 +0000
@@ -6,27 +6,29 @@
local server = require "net.server";
local httpserver = require "net.httpserver";
local sm = require "core.sessionmanager";
+local sm_destroy_session = sm.destroy_session;
local new_uuid = require "util.uuid".generate;
local fire_event = require "core.eventmanager".fire_event;
local core_process_stanza = core_process_stanza;
local st = require "util.stanza";
local log = require "util.logger".init("bosh");
local stream_callbacks = { stream_tag = "http://jabber.org/protocol/httpbind|body" };
-
+local config = require "core.configmanager";
local xmlns_bosh = "http://jabber.org/protocol/httpbind"; -- (hard-coded into a literal in session.send)
-local BOSH_DEFAULT_HOLD = 1;
-local BOSH_DEFAULT_INACTIVITY = 30;
-local BOSH_DEFAULT_POLLING = 5;
-local BOSH_DEFAULT_REQUESTS = 2;
-local BOSH_DEFAULT_MAXPAUSE = 120;
+local BOSH_DEFAULT_HOLD = tonumber(config.get("*", "core", "bosh_default_hold")) or 1;
+local BOSH_DEFAULT_INACTIVITY = tonumber(config.get("*", "core", "bosh_max_inactivity")) or 30;
+local BOSH_DEFAULT_POLLING = tonumber(config.get("*", "core", "bosh_max_polling")) or 5;
+local BOSH_DEFAULT_REQUESTS = tonumber(config.get("*", "core", "bosh_max_requests")) or 2;
+local BOSH_DEFAULT_MAXPAUSE = tonumber(config.get("*", "core", "bosh_max_pause")) or 300;
local t_insert, t_remove, t_concat = table.insert, table.remove, table.concat;
local os_time = os.time;
local sessions = {};
+local inactive_sessions = {}; -- Sessions which have no open requests
--- Used to respond to idle sessions
+-- Used to respond to idle sessions (those with waiting requests)
local waiting_requests = {};
function on_destroy_request(request)
waiting_requests[request] = nil;
@@ -34,7 +36,6 @@
function handle_request(method, body, request)
if (not body) or request.method ~= "POST" then
- --return { status = "200 OK", headers = { ["Content-Type"] = "text/html" }, body = "<html><body>You don't look like a BOSH client to me... what do you want?</body></html>" };
return "<html><body>You really don't look like a BOSH client to me... what do you want?</body></html>";
end
if not method then
@@ -60,19 +61,16 @@
log("debug", "...sending what is in the buffer")
session.send(t_concat(session.send_buffer));
session.send_buffer = {};
- return;
else
-- or an empty response
log("debug", "...sending an empty response");
session.send("");
- return;
end
elseif #session.send_buffer > 0 then
log("debug", "Session has data in the send buffer, will send now..");
local resp = t_concat(session.send_buffer);
session.send_buffer = {};
session.send(resp);
- return;
end
if not request.destroyed and session.bosh_wait then
@@ -86,6 +84,7 @@
end
end
+local session_close_reply = tostring(st.stanza("body", { xmlns = xmlns_bosh, type = "terminate" }));
local function bosh_reset_stream(session) session.notopen = true; end
local function bosh_close_stream(session, reason) end
@@ -95,14 +94,15 @@
log("debug", "BOSH body open (sid: %s)", attr.sid);
local sid = attr.sid
if not sid then
+ -- New session request
-- TODO: Sanity checks here (rid, to, known host, etc.)
request.notopen = nil; -- Signals that we accept this opening tag
-- New session
sid = tostring(new_uuid());
local session = { type = "c2s_unauthed", conn = {}, sid = sid, rid = attr.rid, host = attr.to, bosh_version = attr.ver, bosh_wait = attr.wait, streamid = sid,
- bosh_hold = BOSH_DEFAULT_HOLD,
- requests = { }, send_buffer = {}, reset_stream = bosh_reset_stream, close = bosh_close_stream };
+ bosh_hold = BOSH_DEFAULT_HOLD, bosh_max_inactive = BOSH_DEFAULT_INACTIVITY,
+ requests = { }, send_buffer = {}, reset_stream = bosh_reset_stream, close = bosh_close_stream, dispatch_stanza = core_process_stanza };
sessions[sid] = session;
log("info", "New BOSH session, assigned it sid '%s'", sid);
local r, send_buffer = session.requests, session.send_buffer;
@@ -133,6 +133,10 @@
end
elseif s ~= "" then
log("debug", "Saved to send buffer because there are %d open requests", #r);
+ if session.bosh_max_inactive and not inactive_sessions[session] then
+ inactive_sessions[session] = os_time();
+ (session.log or log)("debug", "BOSH session marked as inactive at %d", inactive_sessions[session]);
+ end
-- Hmm, no requests are open :(
t_insert(session.send_buffer, tostring(s));
log("debug", "There are now %d things in the send_buffer", #session.send_buffer);
@@ -145,7 +149,7 @@
fire_event("stream-features", session, features);
--xmpp:version='1.0' xmlns:xmpp='urn:xmpp:xbosh'
local response = st.stanza("body", { xmlns = xmlns_bosh,
- inactivity = "30", polling = "5", requests = "2", hold = tostring(session.bosh_hold), maxpause = "120",
+ inactivity = tostring(BOSH_DEFAULT_INACTIVITY), polling = tostring(BOSH_DEFAULT_POLLING), requests = tostring(BOSH_DEFAULT_REQUESTS), hold = tostring(session.bosh_hold), maxpause = "120",
sid = sid, ver = '1.6', from = session.host, secure = 'true', ["xmpp:version"] = "1.0",
["xmlns:xmpp"] = "urn:xmpp:xbosh", ["xmlns:stream"] = "http://etherx.jabber.org/streams" }):add_child(features);
request:send(tostring(response));
@@ -163,6 +167,25 @@
return;
end
+ if attr.type == "terminate" then
+ -- Client wants to end this session
+ (session.log or log)("info", "BOSH client disconnected");
+ for _, held_request in ipairs(session.requests) do
+ held_request:send(session_close_reply);
+ held_request:destroy();
+ end
+ sm_destroy_session(session);
+ sessions[sid] = nil;
+ request.notopen = nil;
+ return;
+ end
+
+ -- If session was inactive, make sure it is now marked as not
+ if #session.requests == 0 then
+ (session.log or log)("debug", "BOSH client now active again at %d", os_time());
+ inactive_sessions[session] = nil;
+ end
+
if session.notopen then
local features = st.stanza("stream:features");
fire_event("stream-features", session, features);
@@ -200,6 +223,16 @@
end
end
end
+
+ now = now - 3;
+ for session, inactive_since in pairs(inactive_sessions) do
+ if now - inactive_since > session.bosh_max_inactive then
+ (session.log or log)("debug", "BOSH client inactive too long, destroying session at %d", now);
+ sessions[session.sid] = nil;
+ inactive_sessions[session] = nil;
+ sm_destroy_session(session, "BOSH client silent for over "..session.bosh_max_inactive.." seconds");
+ end
+ end
end
httpserver.new{ port = 5280, base = "http-bind", handler = handle_request, ssl = false}