PortMapper.hpp

/*
 * Copyright (c)2019 ZeroTier, Inc.
 *
 * Use of this software is governed by the Business Source License included
 * in the LICENSE.TXT file in the project's root directory.
 *
 * Change Date: 2026-01-01
 *
 * On the date above, in accordance with the Business Source License, use
 * of this software will be governed by version 2.0 of the Apache License.
 */
/****/

#ifdef ZT_USE_MINIUPNPC

#ifndef ZT_PORTMAPPER_HPP
#define ZT_PORTMAPPER_HPP

#include <vector>

#include "../node/Constants.hpp"
#include "../node/InetAddress.hpp"
#include "../node/Mutex.hpp"
#include "Thread.hpp"

/**
 * How frequently should we refresh our UPNP/NAT-PnP/whatever state?
 */
#define ZT_PORTMAPPER_REFRESH_DELAY 300000

namespace ZeroTier {

class PortMapperImpl;

/**
 * UPnP/NAT-PnP port mapping "daemon"
 */
class PortMapper
{
	friend class PortMapperImpl;

public:
	/**
	 * Create and start port mapper service
	 *
	 * @param localUdpPortToMap Port we want visible to the outside world
	 * @param name Unique name of this endpoint (based on ZeroTier address)
	 */
	PortMapper(int localUdpPortToMap,const char *uniqueName);

	~PortMapper();

	/**
	 * @return All current external mappings for our port
	 */
	std::vector<InetAddress> get() const;

private:
	PortMapperImpl *_impl;
};

} // namespace ZeroTier

#endif

#endif // ZT_USE_MINIUPNPC