72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
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/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef P2P_BASE_STUN_SERVER_H_
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#define P2P_BASE_STUN_SERVER_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <memory>
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#include "api/transport/stun.h"
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#include "rtc_base/async_packet_socket.h"
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#include "rtc_base/async_udp_socket.h"
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#include "rtc_base/socket_address.h"
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#include "rtc_base/third_party/sigslot/sigslot.h"
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namespace cricket {
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const int STUN_SERVER_PORT = 3478;
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class StunServer : public sigslot::has_slots<> {
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public:
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// Creates a STUN server, which will listen on the given socket.
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explicit StunServer(rtc::AsyncUDPSocket* socket);
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// Removes the STUN server from the socket and deletes the socket.
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~StunServer() override;
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protected:
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// Slot for AsyncSocket.PacketRead:
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void OnPacket(rtc::AsyncPacketSocket* socket,
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const char* buf,
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size_t size,
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const rtc::SocketAddress& remote_addr,
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const int64_t& packet_time_us);
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// Handlers for the different types of STUN/TURN requests:
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virtual void OnBindingRequest(StunMessage* msg,
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const rtc::SocketAddress& addr);
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void OnAllocateRequest(StunMessage* msg, const rtc::SocketAddress& addr);
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void OnSharedSecretRequest(StunMessage* msg, const rtc::SocketAddress& addr);
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void OnSendRequest(StunMessage* msg, const rtc::SocketAddress& addr);
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// Sends an error response to the given message back to the user.
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void SendErrorResponse(const StunMessage& msg,
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const rtc::SocketAddress& addr,
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int error_code,
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const char* error_desc);
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// Sends the given message to the appropriate destination.
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void SendResponse(const StunMessage& msg, const rtc::SocketAddress& addr);
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// A helper method to compose a STUN binding response.
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void GetStunBindResponse(StunMessage* request,
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const rtc::SocketAddress& remote_addr,
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StunMessage* response) const;
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private:
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std::unique_ptr<rtc::AsyncUDPSocket> socket_;
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};
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} // namespace cricket
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#endif // P2P_BASE_STUN_SERVER_H_
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