Qt 5.11 | Qt Network | Torrent Example | torrentserver.cpp Example File

Qt 5.11.3 Reference Documentation

# torrentserver.cpp Example File

torrent/torrentserver.cpp

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      #include "connectionmanager.h"
      #include "peerwireclient.h"
      #include "ratecontroller.h"
      #include "torrentclient.h"
      #include "torrentserver.h"

      Q_GLOBAL_STATIC(TorrentServer, torrentServer)

      TorrentServer *TorrentServer::instance()
      {
          return torrentServer();
      }

      void TorrentServer::addClient(TorrentClient *client)
      {
          clients << client;
      }

      void TorrentServer::removeClient(TorrentClient *client)
      {
          clients.removeAll(client);
      }

      void TorrentServer::incomingConnection(qintptr socketDescriptor)
      {
          PeerWireClient *client =
              new PeerWireClient(ConnectionManager::instance()->clientId(), this);

          if (client->setSocketDescriptor(socketDescriptor)) {
              if (ConnectionManager::instance()->canAddConnection() && !clients.isEmpty()) {
                  connect(client, SIGNAL(infoHashReceived(QByteArray)),
                          this, SLOT(processInfoHash(QByteArray)));
                  connect(client, SIGNAL(error(QAbstractSocket::SocketError)),
                          this, SLOT(removeClient()));
                  RateController::instance()->addSocket(client);
                  ConnectionManager::instance()->addConnection(client);
                  return;
              }
          }
          client->abort();
          delete client;
      }

      void TorrentServer::removeClient()
      {
          PeerWireClient *peer = qobject_cast<PeerWireClient *>(sender());
          RateController::instance()->removeSocket(peer);
          ConnectionManager::instance()->removeConnection(peer);
          peer->deleteLater();
      }

      void TorrentServer::processInfoHash(const QByteArray &infoHash)
      {
          PeerWireClient *peer = qobject_cast<PeerWireClient *>(sender());
          foreach (TorrentClient *client, clients) {
              if (client->state() >= TorrentClient::Searching && client->infoHash() == infoHash) {
                  peer->disconnect(peer, 0, this, 0);
                  client->setupIncomingConnection(peer);
                  return;
              }
          }
          removeClient();
      }