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/*
* Copyright (c) 2020 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 TEST_NETWORK_EMULATED_TURN_SERVER_H_
#define TEST_NETWORK_EMULATED_TURN_SERVER_H_
#include <map>
#include <memory>
#include <string>
#include "absl/strings/string_view.h"
#include "api/test/network_emulation_manager.h"
#include "api/transport/stun.h"
#include "p2p/base/turn_server.h"
#include "rtc_base/async_packet_socket.h"
namespace webrtc {
namespace test {
// EmulatedTURNServer wraps cricket::TurnServer to be used inside
// a emulated network.
//
// Packets from EmulatedEndpoint (client or peer) are received in
// EmulatedTURNServer::OnPacketReceived which performs a map lookup
// and delivers them into cricket::TurnServer using
// AsyncPacketSocket::SignalReadPacket
//
// Packets from cricket::TurnServer to EmulatedEndpoint are sent into
// using a wrapper around AsyncPacketSocket (no lookup required as the
// wrapper around AsyncPacketSocket keep a pointer to the EmulatedEndpoint).
class EmulatedTURNServer : public EmulatedTURNServerInterface,
public cricket::TurnAuthInterface,
public webrtc::EmulatedNetworkReceiverInterface {
public:
// Create an EmulatedTURNServer.
// `thread` is a thread that will be used to run cricket::TurnServer
// that expects all calls to be made from a single thread.
EmulatedTURNServer(std::unique_ptr<rtc::Thread> thread,
EmulatedEndpoint* client,
EmulatedEndpoint* peer);
~EmulatedTURNServer() override;
IceServerConfig GetIceServerConfig() const override { return ice_config_; }
EmulatedEndpoint* GetClientEndpoint() const override { return client_; }
rtc::SocketAddress GetClientEndpointAddress() const override {
return client_address_;
}
EmulatedEndpoint* GetPeerEndpoint() const override { return peer_; }
// cricket::TurnAuthInterface
bool GetKey(absl::string_view username,
absl::string_view realm,
std::string* key) override {
return cricket::ComputeStunCredentialHash(
std::string(username), std::string(realm), std::string(username), key);
}
rtc::AsyncPacketSocket* CreatePeerSocket() { return Wrap(peer_); }
// This method is called by network emulation when a packet
// comes from an emulated link.
void OnPacketReceived(webrtc::EmulatedIpPacket packet) override;
// This is called when the TURN server deletes a socket.
void Unbind(rtc::SocketAddress address);
// Unbind all sockets.
void Stop();
private:
std::unique_ptr<rtc::Thread> thread_;
rtc::SocketAddress client_address_;
IceServerConfig ice_config_;
EmulatedEndpoint* const client_;
EmulatedEndpoint* const peer_;
std::unique_ptr<cricket::TurnServer> turn_server_ RTC_GUARDED_BY(&thread_);
std::map<rtc::SocketAddress, rtc::AsyncPacketSocket*> sockets_
RTC_GUARDED_BY(&thread_);
// Wraps a EmulatedEndpoint in a AsyncPacketSocket to bridge interaction
// with TurnServer. cricket::TurnServer gets ownership of the socket.
rtc::AsyncPacketSocket* Wrap(EmulatedEndpoint* endpoint);
};
} // namespace test
} // namespace webrtc
#endif // TEST_NETWORK_EMULATED_TURN_SERVER_H_
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