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Support pausing sessions (thanks to Stefan Strigler) (thanks to Stefan Strigler)
SVN Revision: 2286
This commit is contained in:
Badlop
parent
c151da684d
commit
8aede81188
@ -4,12 +4,12 @@
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%%% Purpose : Implements XMPP over BOSH (XEP-0205) (formerly known as
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%%% HTTP Binding)
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%%% Created : 21 Sep 2005 by Stefan Strigler <steve@zeank.in-berlin.de>
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%%% Id : $Id: ejabberd_http_bind.erl 278 2007-08-16 10:53:28Z sstrigler $
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%%% Id : $Id: ejabberd_http_bind.erl 280 2007-08-16 13:25:41Z sstrigler $
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%%%----------------------------------------------------------------------
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-module(ejabberd_http_bind).
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-author('steve@zeank.in-berlin.de').
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-vsn('$Rev: 278 $').
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-vsn('$Rev: 280 $').
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-behaviour(gen_fsm).
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@ -53,6 +53,7 @@
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last_poll,
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ctime = 0,
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timer,
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pause=0,
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req_list = [] % list of requests
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}).
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@ -73,9 +74,12 @@
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-define(MAX_REQUESTS, 2). % number of simultaneous requests
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-define(MIN_POLLING, 2000000). % don't poll faster than that or we will
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% shoot you (time in µsec)
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-define(MAX_WAIT, 3600). % max num of secs to keep a request on hold
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-define(MAX_WAIT, 3600). % max num of secs to keep a request on hold
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-define(MAX_INACTIVITY, 30000). % msecs to wait before terminating
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% idle sessions
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-define(MAX_PAUSE, 120). % may num of sec a client is allowed to pause
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% the session
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-define(CT, {"Content-Type", "text/xml; charset=utf-8"}).
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-define(HEADER, [?CT]).
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@ -288,14 +292,19 @@ handle_sync_event({http_put, Rid, Attrs, Payload, Hold, StreamTo},
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RidAllow = case StateData#state.rid of
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none ->
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%% first request - nothing saved so far
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true;
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{true, 0};
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OldRid ->
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?DEBUG("state.rid/cur rid: ~p/~p",
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[OldRid, Rid]),
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if
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(OldRid < Rid) and
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(Rid =< (OldRid + Hold + 1)) ->
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true;
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case xml:get_attr_s("pause", Attrs) of
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Pause1 when Pause1 =< ?MAX_PAUSE ->
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{true, Pause1};
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_ ->
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{true, 0}
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end;
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(Rid =< OldRid) and
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(Rid > OldRid - Hold - 1) ->
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repeat;
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@ -309,7 +318,7 @@ handle_sync_event({http_put, Rid, Attrs, Payload, Hold, StreamTo},
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true;
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false ->
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false;
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true ->
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{true, _} ->
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case StateData#state.key of
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"" ->
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true;
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@ -360,7 +369,7 @@ handle_sync_event({http_put, Rid, Attrs, Payload, Hold, StreamTo},
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end,
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{reply, Reply, StateName,
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StateData#state{input = "cancel", last_poll = LastPoll}};
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true ->
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{true, Pause} ->
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SaveKey = if
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NewKey == "" ->
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Key;
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@ -380,11 +389,19 @@ handle_sync_event({http_put, Rid, Attrs, Payload, Hold, StreamTo},
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El#hbr.rid > (Rid - 1 - Hold)]
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],
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%% ?DEBUG("reqlist: ~p", [ReqList]),
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%% setup next timer
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cancel_timer(StateData#state.timer),
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if
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Pause > 0 ->
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Timer = erlang:start_timer(
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Pause, self(), []);
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true ->
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Timer = erlang:start_timer(
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?MAX_INACTIVITY, self(), [])
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end,
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case StateData#state.waiting_input of
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false ->
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cancel_timer(StateData#state.timer),
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Timer = erlang:start_timer(
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?MAX_INACTIVITY, self(), []),
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Input = Payload ++ [StateData#state.input],
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Reply = ok,
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{reply, Reply, StateName,
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@ -393,6 +410,7 @@ handle_sync_event({http_put, Rid, Attrs, Payload, Hold, StreamTo},
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key = SaveKey,
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ctime = TNow,
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timer = Timer,
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pause = Pause,
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last_poll = LastPoll,
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req_list = ReqList
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}};
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@ -416,9 +434,6 @@ handle_sync_event({http_put, Rid, Attrs, Payload, Hold, StreamTo},
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?DEBUG("really sending now: ~s", [SendPacket]),
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Receiver ! {tcp, {http_bind, self()},
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list_to_binary(SendPacket)},
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cancel_timer(StateData#state.timer),
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Timer = erlang:start_timer(
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?MAX_INACTIVITY, self(), []),
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Reply = ok,
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{reply, Reply, StateName,
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StateData#state{waiting_input = false,
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@ -428,6 +443,7 @@ handle_sync_event({http_put, Rid, Attrs, Payload, Hold, StreamTo},
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key = SaveKey,
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ctime = TNow,
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timer = Timer,
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pause = Pause,
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last_poll = LastPoll,
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req_list = ReqList
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}}
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@ -439,16 +455,26 @@ handle_sync_event({http_put, Rid, Attrs, Payload, Hold, StreamTo},
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end;
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handle_sync_event({http_get, Rid, Wait, Hold}, _From, StateName, StateData) ->
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%% setup timer
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cancel_timer(StateData#state.timer),
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if
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StateData#state.pause > 0 ->
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Timer = erlang:start_timer(
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StateData#state.pause, self(), []);
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true ->
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Timer = erlang:start_timer(
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?MAX_INACTIVITY, self(), [])
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end,
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{_,TSec,TMSec} = now(),
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TNow = TSec*1000*1000 + TMSec,
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cancel_timer(StateData#state.timer),
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Timer = erlang:start_timer(?MAX_INACTIVITY, self(), []),
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if
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(Hold > 0) and
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(StateData#state.output == "") and
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((TNow - StateData#state.ctime) < (Wait*1000*1000)) and
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(StateData#state.rid == Rid) and
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(StateData#state.input /= "cancel") ->
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(StateData#state.input /= "cancel") and
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(StateData#state.pause == 0) ->
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Output = StateData#state.output,
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ReqList = StateData#state.req_list,
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Reply = {ok, keep_on_hold};
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@ -678,6 +704,8 @@ prepare_response(#http_bind{id=Sid, wait=Wait, hold=Hold}=Sess,
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{"inactivity",
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integer_to_list(
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trunc(?MAX_INACTIVITY/1000))},
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{"maxpause",
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integer_to_list(?MAX_PAUSE)},
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{"polling",
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integer_to_list(
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trunc(?MIN_POLLING/1000000))},
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