1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
%%%----------------------------------------------------------------------
%%% File : ejabberd_receiver.erl
%%% Author : Alexey Shchepin <alexey@sevcom.net>
%%% Purpose : Socket receiver for C2S and S2S connections
%%% Created : 10 Nov 2003 by Alexey Shchepin <alexey@sevcom.net>
%%% Id : $Id$
%%%----------------------------------------------------------------------
-module(ejabberd_receiver).
-author('alexey@sevcom.net').
-vsn('$Revision$ ').
-export([start/3,
receiver/4,
change_shaper/2,
reset_stream/1]).
-include("ejabberd.hrl").
start(Socket, SockMod, Shaper) ->
proc_lib:spawn(?MODULE, receiver, [Socket, SockMod, Shaper, self()]).
receiver(Socket, SockMod, Shaper, C2SPid) ->
XMLStreamPid = xml_stream:start(self(), C2SPid),
ShaperState = shaper:new(Shaper),
Timeout = case SockMod of
ssl ->
20;
_ ->
infinity
end,
receiver(Socket, SockMod, ShaperState, C2SPid, XMLStreamPid, Timeout).
receiver(Socket, SockMod, ShaperState, C2SPid, XMLStreamPid, Timeout) ->
case catch SockMod:recv(Socket, 0, Timeout) of
{ok, Text} ->
ShaperSt1 = receive
{change_shaper, Shaper} ->
shaper:new(Shaper)
after 0 ->
ShaperState
end,
NewShaperState = shaper:update(ShaperSt1, size(Text)),
XMLStreamPid1 = receive
reset_stream ->
exit(XMLStreamPid, closed),
xml_stream:start(self(), C2SPid)
after 0 ->
XMLStreamPid
end,
xml_stream:send_text(XMLStreamPid1, Text),
receiver(Socket, SockMod, NewShaperState, C2SPid, XMLStreamPid1,
Timeout);
{error, timeout} ->
receiver(Socket, SockMod, ShaperState, C2SPid, XMLStreamPid,
Timeout);
{error, Reason} ->
exit(XMLStreamPid, closed),
gen_fsm:send_event(C2SPid, closed),
ok;
{'EXIT', Reason} ->
?ERROR_MSG("(~w) abnormal ~w:recv termination:~n\t~p~n",
[Socket, SockMod, Reason]),
exit(XMLStreamPid, closed),
gen_fsm:send_event(C2SPid, closed),
ok
end.
change_shaper(Pid, Shaper) ->
Pid ! {change_shaper, Shaper}.
reset_stream(Pid) ->
Pid ! reset_stream.
|
