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
|
/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "DHTPingTask.h"
#include "DHTMessage.h"
#include "DHTMessageFactory.h"
#include "DHTMessageDispatcher.h"
#include "DHTNode.h"
#include "DHTConstants.h"
#include "DHTPingReplyMessageCallback.h"
#include "DHTQueryMessage.h"
namespace aria2 {
DHTPingTask::DHTPingTask
(const SharedHandle<DHTNode>& remoteNode, int numMaxRetry):
remoteNode_(remoteNode),
numMaxRetry_(numMaxRetry),
numRetry_(0),
pingSuccessful_(false),
timeout_(DHT_MESSAGE_TIMEOUT)
{}
DHTPingTask::~DHTPingTask() {}
void DHTPingTask::addMessage()
{
SharedHandle<DHTMessage> m =
getMessageFactory()->createPingMessage(remoteNode_);
SharedHandle<DHTMessageCallback> callback
(new DHTPingReplyMessageCallback<DHTPingTask>(this));
getMessageDispatcher()->addMessageToQueue(m, timeout_, callback);
}
void DHTPingTask::startup()
{
addMessage();
}
void DHTPingTask::onReceived(const DHTPingReplyMessage* message)
{
pingSuccessful_ = true;
setFinished(true);
}
void DHTPingTask::onTimeout(const SharedHandle<DHTNode>& node)
{
++numRetry_;
if(numRetry_ >= numMaxRetry_) {
pingSuccessful_ = false;
setFinished(true);
} else {
addMessage();
}
}
bool DHTPingTask::isPingSuccessful() const
{
return pingSuccessful_;
}
} // namespace aria2
|
