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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*
lag.c : irssi
Copyright (C) 1999 Timo Sirainen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "module.h"
#include "signals.h"
#include "misc.h"
#include "settings.h"
#include "irc-servers.h"
#include "servers-redirect.h"
static int timeout_tag;
static void lag_get(IRC_SERVER_REC *server)
{
g_get_current_time(&server->lag_sent);
server->lag_last_check = time(NULL);
server_redirect_event(server, "ping", 1, NULL, FALSE,
"lag ping error",
"event pong", "lag pong", NULL);
irc_send_cmdv(server, "PING %s", server->real_address);
}
/* we didn't receive PONG for some reason .. try again */
static void lag_ping_error(IRC_SERVER_REC *server)
{
lag_get(server);
}
static void lag_event_pong(IRC_SERVER_REC *server, const char *data,
const char *nick, const char *addr)
{
GTimeVal now;
g_return_if_fail(data != NULL);
if (server->lag_sent.tv_sec == 0) {
/* not expecting lag reply.. */
return;
}
g_get_current_time(&now);
server->lag = (int) get_timeval_diff(&now, &server->lag_sent);
memset(&server->lag_sent, 0, sizeof(server->lag_sent));
signal_emit("server lag", 1, server);
}
static void sig_unknown_command(IRC_SERVER_REC *server, const char *data)
{
char *params, *cmd;
g_return_if_fail(data != NULL);
params = event_get_params(data, 2, NULL, &cmd);
if (g_strcasecmp(cmd, "PING") == 0) {
/* some servers have disabled PING command, don't bother
trying alternative methods to detect lag with these
servers. */
server->disable_lag = TRUE;
server->lag_sent.tv_sec = 0;
server->lag = 0;
}
g_free(params);
}
static int sig_check_lag(void)
{
GSList *tmp, *next;
time_t now;
int lag_check_time, max_lag;
lag_check_time = settings_get_time("lag_check_time")/1000;
max_lag = settings_get_time("lag_max_before_disconnect")/1000;
if (lag_check_time <= 0)
return 1;
now = time(NULL);
for (tmp = servers; tmp != NULL; tmp = next) {
IRC_SERVER_REC *rec = tmp->data;
next = tmp->next;
if (!IS_IRC_SERVER(rec) || rec->disable_lag)
continue;
if (rec->lag_sent.tv_sec != 0) {
/* waiting for lag reply */
if (max_lag > 1 && now-rec->lag_sent.tv_sec > max_lag) {
/* too much lag, disconnect */
signal_emit("server lag disconnect", 1, rec);
rec->connection_lost = TRUE;
server_disconnect((SERVER_REC *) rec);
}
} else if (rec->lag_last_check+lag_check_time < now &&
rec->cmdcount == 0 && rec->connected) {
/* no commands in buffer - get the lag */
lag_get(rec);
}
}
return 1;
}
void lag_init(void)
{
settings_add_time("misc", "lag_check_time", "1min");
settings_add_time("misc", "lag_max_before_disconnect", "5min");
timeout_tag = g_timeout_add(1000, (GSourceFunc) sig_check_lag, NULL);
signal_add_first("lag pong", (SIGNAL_FUNC) lag_event_pong);
signal_add("lag ping error", (SIGNAL_FUNC) lag_ping_error);
signal_add("event 421", (SIGNAL_FUNC) sig_unknown_command);
}
void lag_deinit(void)
{
g_source_remove(timeout_tag);
signal_remove("lag pong", (SIGNAL_FUNC) lag_event_pong);
signal_remove("lag ping error", (SIGNAL_FUNC) lag_ping_error);
signal_remove("event 421", (SIGNAL_FUNC) sig_unknown_command);
}
|