/*
* 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 P2P_TEST_STUN_SERVER_H_
#define P2P_TEST_STUN_SERVER_H_
#include <memory>
#include "absl/base/nullability.h"
#include "absl/strings/string_view.h"
#include "api/sequence_checker.h"
#include "api/transport/stun.h"
#include "rtc_base/async_packet_socket.h"
#include "rtc_base/async_udp_socket.h"
#include "rtc_base/network/received_packet.h"
#include "rtc_base/socket_address.h"
namespace webrtc {
const int STUN_SERVER_PORT =
3478;
class StunServer {
public:
// Creates a STUN server, which will listen on the given socket.
explicit StunServer(absl_nonnull std::unique_ptr<AsyncUDPSocket> socket);
// Removes the STUN server from the socket and deletes the socket.
virtual ~StunServer();
protected:
// Callback for packets from socket.
void OnPacket(AsyncPacketSocket* socket,
const ReceivedIpPacket& packet);
// Handlers for the different types of STUN/TURN requests:
virtual
void OnBindingRequest(StunMessage* msg,
const SocketAddress& addr);
void OnAllocateRequest(StunMessage* msg,
const SocketAddress& addr);
void OnSharedSecretRequest(StunMessage* msg,
const SocketAddress& addr);
void OnSendRequest(StunMessage* msg,
const SocketAddress& addr);
// Sends an error response to the given message back to the user.
void SendErrorResponse(
const StunMessage& msg,
const SocketAddress& addr,
int error_code,
absl::string_view error_desc);
// Sends the given message to the appropriate destination.
void SendResponse(
const StunMessage& msg,
const SocketAddress& addr);
// A helper method to compose a STUN binding response.
void GetStunBindResponse(StunMessage* message,
const SocketAddress& remote_addr,
StunMessage* response)
const;
private:
SequenceChecker sequence_checker_;
std::unique_ptr<AsyncUDPSocket> socket_;
};
}
// namespace webrtc
#endif // P2P_TEST_STUN_SERVER_H_
