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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CAST_SENDER_PUBLIC_SENDER_SOCKET_FACTORY_H_
#define CAST_SENDER_PUBLIC_SENDER_SOCKET_FACTORY_H_
#include <openssl/x509.h>
#include <memory>
#include <set>
#include <utility>
#include <vector>
#include "cast/common/public/cast_socket.h"
#include "platform/api/serial_delete_ptr.h"
#include "platform/api/task_runner.h"
#include "platform/api/tls_connection_factory.h"
#include "platform/base/ip_address.h"
namespace openscreen {
namespace cast {
class AuthContext;
class SenderSocketFactory final : public TlsConnectionFactory::Client,
public CastSocket::Client {
public:
class Client {
public:
virtual void OnConnected(SenderSocketFactory* factory,
const IPEndpoint& endpoint,
std::unique_ptr<CastSocket> socket) = 0;
virtual void OnError(SenderSocketFactory* factory,
const IPEndpoint& endpoint,
Error error) = 0;
protected:
virtual ~Client();
};
enum class DeviceMediaPolicy {
kNone = 0,
kAudioOnly,
kIncludesVideo,
};
// |client| and |task_runner| must outlive |this|.
SenderSocketFactory(Client* client, TaskRunner* task_runner);
~SenderSocketFactory();
// |factory| cannot be nullptr and must outlive |this|.
void set_factory(TlsConnectionFactory* factory);
// Begins connecting to a Cast device at |endpoint|. If a successful
// connection is made, including device authentication, the new CastSocket
// will be passed to |client_|'s OnConnected method. The new CastSocket will
// have its client set to |client|. If any part of the connection process
// fails, |client_|'s OnError method is called instead. This includes if the
// device's media policy, as determined by authentication, is audio-only and
// |media_policy| is kIncludesVideo.
void Connect(const IPEndpoint& endpoint,
DeviceMediaPolicy media_policy,
CastSocket::Client* client);
// TlsConnectionFactory::Client overrides.
void OnAccepted(TlsConnectionFactory* factory,
std::vector<uint8_t> der_x509_peer_cert,
std::unique_ptr<TlsConnection> connection) override;
void OnConnected(TlsConnectionFactory* factory,
std::vector<uint8_t> der_x509_peer_cert,
std::unique_ptr<TlsConnection> connection) override;
void OnConnectionFailed(TlsConnectionFactory* factory,
const IPEndpoint& remote_address) override;
void OnError(TlsConnectionFactory* factory, Error error) override;
private:
struct PendingConnection {
IPEndpoint endpoint;
DeviceMediaPolicy media_policy;
CastSocket::Client* client;
};
struct PendingAuth {
IPEndpoint endpoint;
DeviceMediaPolicy media_policy;
SerialDeletePtr<CastSocket> socket;
CastSocket::Client* client;
std::unique_ptr<AuthContext> auth_context;
bssl::UniquePtr<X509> peer_cert;
};
friend bool operator<(const std::unique_ptr<PendingAuth>& a, int b);
friend bool operator<(int a, const std::unique_ptr<PendingAuth>& b);
std::vector<PendingConnection>::iterator FindPendingConnection(
const IPEndpoint& endpoint);
// CastSocket::Client overrides.
void OnError(CastSocket* socket, Error error) override;
void OnMessage(CastSocket* socket,
::cast::channel::CastMessage message) override;
Client* const client_;
TaskRunner* const task_runner_;
TlsConnectionFactory* factory_ = nullptr;
std::vector<PendingConnection> pending_connections_;
std::vector<std::unique_ptr<PendingAuth>> pending_auth_;
};
} // namespace cast
} // namespace openscreen
#endif // CAST_SENDER_PUBLIC_SENDER_SOCKET_FACTORY_H_
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