1 /* <!-- copyright */
2 /*
3 * aria2 - The high speed download utility
4 *
5 * Copyright (C) 2006 Tatsuhiro Tsujikawa
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 *
21 * In addition, as a special exception, the copyright holders give
22 * permission to link the code of portions of this program with the
23 * OpenSSL library under certain conditions as described in each
24 * individual source file, and distribute linked combinations
25 * including the two.
26 * You must obey the GNU General Public License in all respects
27 * for all of the code used other than OpenSSL. If you modify
28 * file(s) with this exception, you may extend this exception to your
29 * version of the file(s), but you are not obligated to do so. If you
30 * do not wish to do so, delete this exception statement from your
31 * version. If you delete this exception statement from all source
32 * files in the program, then also delete it here.
33 */
34 /* copyright --> */
35 #include "PeerInitiateConnectionCommand.h"
36 #include "InitiatorMSEHandshakeCommand.h"
37 #include "PeerInteractionCommand.h"
38 #include "DownloadEngine.h"
39 #include "DlAbortEx.h"
40 #include "message.h"
41 #include "prefs.h"
42 #include "SocketCore.h"
43 #include "Logger.h"
44 #include "LogFactory.h"
45 #include "Peer.h"
46 #include "BtRuntime.h"
47 #include "PeerStorage.h"
48 #include "PieceStorage.h"
49 #include "PeerConnection.h"
50 #include "RequestGroup.h"
51 #include "util.h"
52 #include "fmt.h"
53
54 namespace aria2 {
55
PeerInitiateConnectionCommand(cuid_t cuid,RequestGroup * requestGroup,const std::shared_ptr<Peer> & peer,DownloadEngine * e,const std::shared_ptr<BtRuntime> & btRuntime,bool mseHandshakeEnabled)56 PeerInitiateConnectionCommand::PeerInitiateConnectionCommand(
57 cuid_t cuid, RequestGroup* requestGroup, const std::shared_ptr<Peer>& peer,
58 DownloadEngine* e, const std::shared_ptr<BtRuntime>& btRuntime,
59 bool mseHandshakeEnabled)
60 : PeerAbstractCommand(cuid, peer, e),
61 requestGroup_(requestGroup),
62 btRuntime_(btRuntime),
63 mseHandshakeEnabled_(mseHandshakeEnabled)
64 {
65 btRuntime_->increaseConnections();
66 requestGroup_->increaseNumCommand();
67 }
68
~PeerInitiateConnectionCommand()69 PeerInitiateConnectionCommand::~PeerInitiateConnectionCommand()
70 {
71 requestGroup_->decreaseNumCommand();
72 btRuntime_->decreaseConnections();
73 }
74
executeInternal()75 bool PeerInitiateConnectionCommand::executeInternal()
76 {
77 A2_LOG_INFO(fmt(MSG_CONNECTING_TO_SERVER, getCuid(),
78 getPeer()->getIPAddress().c_str(), getPeer()->getPort()));
79 createSocket();
80 getSocket()->establishConnection(getPeer()->getIPAddress(),
81 getPeer()->getPort(), false);
82 getSocket()->applyIpDscp();
83 if (mseHandshakeEnabled_) {
84 auto c = make_unique<InitiatorMSEHandshakeCommand>(
85 getCuid(), requestGroup_, getPeer(), getDownloadEngine(), btRuntime_,
86 getSocket());
87 c->setPeerStorage(peerStorage_);
88 c->setPieceStorage(pieceStorage_);
89 getDownloadEngine()->addCommand(std::move(c));
90 }
91 else {
92 getDownloadEngine()->addCommand(make_unique<PeerInteractionCommand>(
93 getCuid(), requestGroup_, getPeer(), getDownloadEngine(), btRuntime_,
94 pieceStorage_, peerStorage_, getSocket(),
95 PeerInteractionCommand::INITIATOR_SEND_HANDSHAKE));
96 }
97 return true;
98 }
99
100 // TODO this method removed when PeerBalancerCommand is implemented
prepareForNextPeer(time_t wait)101 bool PeerInitiateConnectionCommand::prepareForNextPeer(time_t wait)
102 {
103 if (peerStorage_->isPeerAvailable() && btRuntime_->lessThanEqMinPeers()) {
104 cuid_t ncuid = getDownloadEngine()->newCUID();
105 std::shared_ptr<Peer> peer = peerStorage_->checkoutPeer(ncuid);
106 // sanity check
107 if (peer) {
108 auto command = make_unique<PeerInitiateConnectionCommand>(
109 ncuid, requestGroup_, peer, getDownloadEngine(), btRuntime_);
110 command->setPeerStorage(peerStorage_);
111 command->setPieceStorage(pieceStorage_);
112 getDownloadEngine()->addCommand(std::move(command));
113 }
114 }
115 return true;
116 }
117
onAbort()118 void PeerInitiateConnectionCommand::onAbort()
119 {
120 peerStorage_->returnPeer(getPeer());
121 }
122
exitBeforeExecute()123 bool PeerInitiateConnectionCommand::exitBeforeExecute()
124 {
125 return btRuntime_->isHalt();
126 }
127
setPeerStorage(const std::shared_ptr<PeerStorage> & peerStorage)128 void PeerInitiateConnectionCommand::setPeerStorage(
129 const std::shared_ptr<PeerStorage>& peerStorage)
130 {
131 peerStorage_ = peerStorage;
132 }
133
setPieceStorage(const std::shared_ptr<PieceStorage> & pieceStorage)134 void PeerInitiateConnectionCommand::setPieceStorage(
135 const std::shared_ptr<PieceStorage>& pieceStorage)
136 {
137 pieceStorage_ = pieceStorage;
138 }
139
140 } // namespace aria2
141