chromium/third_party/webrtc/rtc_base/nat_server.h

/*
 *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef RTC_BASE_NAT_SERVER_H_
#define RTC_BASE_NAT_SERVER_H_

#include <map>
#include <set>

#include "rtc_base/async_udp_socket.h"
#include "rtc_base/nat_types.h"
#include "rtc_base/proxy_server.h"
#include "rtc_base/socket_address_pair.h"
#include "rtc_base/socket_factory.h"
#include "rtc_base/synchronization/mutex.h"
#include "rtc_base/thread.h"

namespace rtc {

// Change how routes (socketaddress pairs) are compared based on the type of
// NAT.  The NAT server maintains a hashtable of the routes that it knows
// about.  So these affect which routes are treated the same.
struct RouteCmp { … };

// Changes how addresses are compared based on the filtering rules of the NAT.
struct AddrCmp { … };

// Implements the NAT device.  It listens for packets on the internal network,
// translates them, and sends them out over the external network.
//
// TCP connections initiated from the internal side of the NAT server are
// also supported, by making a connection to the NAT server's TCP address and
// then sending the remote address in quasi-STUN format. The connection status
// will be indicated back to the client as a 1 byte status code, where '0'
// indicates success.

const int NAT_SERVER_UDP_PORT = …;
const int NAT_SERVER_TCP_PORT = …;

class NATServer { … };

}  // namespace rtc

#endif  // RTC_BASE_NAT_SERVER_H_