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/*
* udprelay.h - the header file of UdpRelay class
*
* Copyright (C) 2014-2017 Symeon Huang <hzwhuang@gmail.com>
*
* This file is part of the libQtShadowsocks.
*
* libQtShadowsocks is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* libQtShadowsocks 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libQtShadowsocks; see the file LICENSE. If not, see
* <http://www.gnu.org/licenses/>.
*/
#ifndef UDPRELAY_H
#define UDPRELAY_H
#include <QObject>
#include <QUdpSocket>
#include <QHostAddress>
#include <map>
#include "address.h"
#include "encryptor.h"
namespace QSS {
class QSS_EXPORT UdpRelay : public QObject
{
Q_OBJECT
public:
UdpRelay(const std::string& method,
const std::string& password,
bool is_local,
bool auto_ban,
Address serverAddress);
UdpRelay(const UdpRelay &) = delete;
void setup(const QHostAddress &localAddr,
const uint16_t &localPort);
bool isListening() const;
public slots:
bool listen(const QHostAddress& addr, uint16_t port);
void close();
signals:
/*
* The same situation here.
* We only count "listen" socket's read and written bytes
*/
void bytesRead(quint64);
void bytesSend(quint64);
private:
//64KB, same as shadowsocks-python (udprelay)
static const int64_t RemoteRecvSize = 65536;
const Address serverAddress;
const bool isLocal;
const bool autoBan;
QUdpSocket listenSocket;
std::unique_ptr<Encryptor> encryptor;
std::map<Address, std::shared_ptr<QUdpSocket> > m_cache;
private slots:
void onSocketError();
void onListenStateChanged(QAbstractSocket::SocketState);
void onServerUdpSocketReadyRead();
};
}
#endif // UDPRELAY_H
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