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
|
/*
* Copyright (C) 2007-2010 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#include <bu/socket.h>
#include <bu/sio.h>
#include <sys/time.h>
#include <time.h>
using namespace Bu;
bool isUp()
{
try
{
Socket s("xagasoft.com", 9898, 1 );
char buf[5];
buf[s.read(buf, 2, 1, 0)] = '\0';
if( !strcmp( buf, "hi" ) )
return true;
else
return false;
}
catch(...)
{
return false;
}
}
int main()
{
uint32_t uUp = 0;
uint32_t uDown = 0;
uint32_t uTotal = 0;
struct timeval tv;
for(;;)
{
gettimeofday( &tv, NULL );
time_t goal = ((tv.tv_sec/5)+1)*5;
tv.tv_sec = goal-tv.tv_sec;
tv.tv_usec = 0-tv.tv_usec;
if( tv.tv_usec < 0 )
{
tv.tv_sec--;
tv.tv_usec = 1000000+tv.tv_usec;
}
select( 0, NULL, NULL, NULL, &tv );
gettimeofday( &tv, NULL );
if( isUp() )
{
uUp++;
sio << "status: up ";
}
else
{
uDown++;
sio << "status: down ";
}
uTotal++;
sio << "(up=" << (uUp*5) << "s, down=" << (uDown*5) << ") up for "
<< uUp*100/uTotal << "% of " << uTotal*5 << "s" << sio.nl
<< sio.flush;
}
}
|
