examples/network/torrent/torrentserver.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the examples of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
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    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
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    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include "connectionmanager.h"
       
    43 #include "peerwireclient.h"
       
    44 #include "ratecontroller.h"
       
    45 #include "torrentclient.h"
       
    46 #include "torrentserver.h"
       
    47 
       
    48 Q_GLOBAL_STATIC(TorrentServer, torrentServer)
       
    49 
       
    50 TorrentServer *TorrentServer::instance()
       
    51 {
       
    52     return torrentServer();
       
    53 }
       
    54 
       
    55 void TorrentServer::addClient(TorrentClient *client)
       
    56 {
       
    57     clients << client;
       
    58 }
       
    59 
       
    60 void TorrentServer::removeClient(TorrentClient *client)
       
    61 {
       
    62     clients.removeAll(client);
       
    63 }
       
    64 
       
    65 void TorrentServer::incomingConnection(int socketDescriptor)
       
    66 {
       
    67     PeerWireClient *client =
       
    68   	new PeerWireClient(ConnectionManager::instance()->clientId(), this);
       
    69 
       
    70     if (client->setSocketDescriptor(socketDescriptor)) {
       
    71         if (ConnectionManager::instance()->canAddConnection() && !clients.isEmpty()) {
       
    72             connect(client, SIGNAL(infoHashReceived(const QByteArray &)),
       
    73                     this, SLOT(processInfoHash(const QByteArray &)));
       
    74             connect(client, SIGNAL(error(QAbstractSocket::SocketError)),
       
    75                     this, SLOT(removeClient()));
       
    76             RateController::instance()->addSocket(client);
       
    77             ConnectionManager::instance()->addConnection(client);
       
    78             return;
       
    79         }
       
    80     }
       
    81     client->abort();
       
    82     delete client;
       
    83 }
       
    84 
       
    85 void TorrentServer::removeClient()
       
    86 {
       
    87     PeerWireClient *peer = qobject_cast<PeerWireClient *>(sender());
       
    88     RateController::instance()->removeSocket(peer);
       
    89     ConnectionManager::instance()->removeConnection(peer);
       
    90     peer->deleteLater();
       
    91 }
       
    92 
       
    93 void TorrentServer::processInfoHash(const QByteArray &infoHash)
       
    94 {
       
    95     PeerWireClient *peer = qobject_cast<PeerWireClient *>(sender());
       
    96     foreach (TorrentClient *client, clients) {
       
    97         if (client->state() >= TorrentClient::Searching && client->infoHash() == infoHash) {
       
    98             peer->disconnect(peer, 0, this, 0);
       
    99             client->setupIncomingConnection(peer);
       
   100             return;
       
   101         }
       
   102     }
       
   103     removeClient();
       
   104 }