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// Copyright (c) 2012 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.
// P2PSocketDispatcher is a per-renderer object that dispatchers all
// P2P messages received from the browser and relays all P2P messages
// sent to the browser. P2PSocketClient instances register themselves
// with the dispatcher using RegisterClient() and UnregisterClient().
//
// Relationship of classes.
//
// P2PSocketHost P2PSocketClient
// ^ ^
// | |
// v IPC v
// P2PSocketDispatcherHost <---------> P2PSocketDispatcher
//
// P2PSocketDispatcher receives and dispatches messages on the
// IO thread.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_P2P_SOCKET_DISPATCHER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_P2P_SOCKET_DISPATCHER_H_
#include <stdint.h>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/observer_list_threadsafe.h"
#include "base/synchronization/lock.h"
#include "base/types/pass_key.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/shared_remote.h"
#include "net/base/ip_address.h"
#include "net/base/network_interfaces.h"
#include "services/network/public/cpp/p2p_socket_type.h"
#include "services/network/public/mojom/p2p.mojom-blink.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_receiver.h"
#include "third_party/blink/renderer/platform/mojo/mojo_binding_context.h"
#include "third_party/blink/renderer/platform/p2p/network_list_manager.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/supplementable.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace base {
class SingleThreadTaskRunner;
} // namespace base
namespace blink {
class NetworkListObserver;
// This class is created on the main thread, but is used primarily on the
// WebRTC worker threads.
class PLATFORM_EXPORT P2PSocketDispatcher
: public GarbageCollected<P2PSocketDispatcher>,
public Supplement<MojoBindingContext>,
public blink::NetworkListManager,
public network::mojom::blink::P2PNetworkNotificationClient {
public:
static const char kSupplementName[];
static P2PSocketDispatcher& From(MojoBindingContext& context);
P2PSocketDispatcher(MojoBindingContext& context,
base::PassKey<P2PSocketDispatcher>);
~P2PSocketDispatcher() override;
// blink::NetworkListManager interface:
void AddNetworkListObserver(
blink::NetworkListObserver* network_list_observer) override;
void RemoveNetworkListObserver(
blink::NetworkListObserver* network_list_observer) override;
mojo::SharedRemote<network::mojom::blink::P2PSocketManager>
GetP2PSocketManager();
void Trace(Visitor*) const override;
private:
// network::mojom::blink::P2PNetworkNotificationClient interface.
void NetworkListChanged(
const Vector<net::NetworkInterface>& networks,
const net::IPAddress& default_ipv4_local_address,
const net::IPAddress& default_ipv6_local_address) override;
void RequestInterfaceIfNecessary();
void RequestNetworkEventsIfNecessary();
void OnConnectionError();
void ReconnectP2PSocketManager();
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
// TODO(crbug.com/787254): When moving NetworkListObserver to Oilpan,
// thread-safety needs to be taken into account.
scoped_refptr<base::ObserverListThreadSafe<blink::NetworkListObserver>>
network_list_observers_;
mojo::PendingReceiver<network::mojom::blink::P2PSocketManager>
p2p_socket_manager_receiver_;
mojo::SharedRemote<network::mojom::blink::P2PSocketManager>
p2p_socket_manager_ GUARDED_BY(p2p_socket_manager_lock_);
base::Lock p2p_socket_manager_lock_;
// Cached from last |NetworkListChanged| call.
Vector<net::NetworkInterface> networks_;
net::IPAddress default_ipv4_local_address_;
net::IPAddress default_ipv6_local_address_;
HeapMojoReceiver<network::mojom::blink::P2PNetworkNotificationClient,
P2PSocketDispatcher>
network_notification_client_receiver_;
DISALLOW_COPY_AND_ASSIGN(P2PSocketDispatcher);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_P2P_SOCKET_DISPATCHER_H_
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