Index: chrome/browser/media/router/discovery/discovery_network_monitor.h |
diff --git a/chrome/browser/media/router/discovery/discovery_network_monitor.h b/chrome/browser/media/router/discovery/discovery_network_monitor.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..df67790f32c19c6c0815e5a3d9d3a6bd3394eb25 |
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+++ b/chrome/browser/media/router/discovery/discovery_network_monitor.h |
@@ -0,0 +1,113 @@ |
+// Copyright (c) 2017 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 CHROME_BROWSER_MEDIA_ROUTER_DISCOVERY_DISCOVERY_NETWORK_MONITOR_H_ |
+#define CHROME_BROWSER_MEDIA_ROUTER_DISCOVERY_DISCOVERY_NETWORK_MONITOR_H_ |
+ |
+#include <string> |
+#include <vector> |
+ |
+#include "base/bind.h" |
+#include "base/lazy_instance.h" |
+#include "base/macros.h" |
+#include "base/observer_list_threadsafe.h" |
+#include "base/synchronization/lock.h" |
+#include "content/public/browser/browser_thread.h" |
+#include "net/base/ip_address.h" |
+#include "net/base/network_change_notifier.h" |
+ |
+// Represents a single network interface that can be used for discovery. |
+struct NetworkInfo { |
+ public: |
+ NetworkInfo(); |
+ NetworkInfo(uint32_t index, |
+ net::NetworkChangeNotifier::ConnectionType connection_type, |
+ std::string name, |
+ std::string network_id); |
+ ~NetworkInfo() = default; |
+ |
+ NetworkInfo(const NetworkInfo&); |
+ NetworkInfo& operator=(const NetworkInfo&); |
+ |
+ bool operator==(const NetworkInfo&) const; |
+ bool operator!=(const NetworkInfo&) const; |
+ |
+ // The index of the network interface. |
+ uint32_t index = 0; |
+ // The connection type. Must be CONNECTION_ETHERNET or CONNECTION_WIFI. |
+ net::NetworkChangeNotifier::ConnectionType connection_type = |
+ net::NetworkChangeNotifier::ConnectionType::CONNECTION_UNKNOWN; |
+ // The name of the network interface. |
+ std::string name; |
+ // A unique identifier for the network interface. |
+ // For WiFi networks, this is the SSID. |
+ // For Ethernet networks, this is the MAC address. |
+ std::string network_id; |
+}; |
+ |
+// Tracks the set of active network interfaces that can be used for local |
+// discovery. If the list of interfaces changes, then |
+// DiscoveryNetworkMonitor::Observer is called with the instance of the manager. |
+// Only one instance of this should be created per browser process. |
+class DiscoveryNetworkMonitor |
+ : public net::NetworkChangeNotifier::NetworkChangeObserver { |
+ public: |
+ using NetworkInfoCallback = base::Callback<std::vector<NetworkInfo>()>; |
+ using NetworkRefreshCompleteCallback = base::Callback<void()>; |
+ class Observer { |
+ public: |
+ // Called when the list of connected interfaces has changed. |
+ virtual void OnNetworksChanged(const DiscoveryNetworkMonitor& manager) = 0; |
+ |
+ protected: |
+ ~Observer() = default; |
+ }; |
+ |
+ static DiscoveryNetworkMonitor* GetInstance(); |
+ static DiscoveryNetworkMonitor* GetInstanceForTest(NetworkInfoCallback); |
+ |
+ void RebindNetworkChangeObserverForTest(); |
+ |
+ void AddObserver(Observer* const observer); |
+ void RemoveObserver(Observer* const observer); |
+ |
+ // Forces a query of the network state to recompute |network_id_| and |
+ // |networks_|. |callback| will be called after the refresh. |
+ void Refresh(NetworkRefreshCompleteCallback callback); |
+ |
+ // Computes a stable string identifier from the list of connected interfaces. |
+ // Returns "disconnected" if there are no connected interfaces or "unknown" if |
+ // the identifier could not be computed. |
+ const std::string GetNetworkId() const { |
+ DCHECK_CURRENTLY_ON(content::BrowserThread::IO); |
+ return network_id_; |
+ } |
+ |
+ // net::NetworkChangeNotifier::NetworkChangeObserver |
+ void OnNetworkChanged( |
+ net::NetworkChangeNotifier::ConnectionType type) override; |
+ |
+ // Constants for the special states of network Id. |
+ static const char kNetworkIdDisconnected[]; |
+ static const char kNetworkIdUnknown[]; |
+ |
+ private: |
+ friend struct base::LazyInstanceTraitsBase<DiscoveryNetworkMonitor>; |
+ |
+ DiscoveryNetworkMonitor(); |
+ ~DiscoveryNetworkMonitor() override; |
+ |
+ std::string ComputeNetworkId( |
+ const std::vector<NetworkInfo>& network_info_list); |
+ void UpdateNetworkInfo(const NetworkRefreshCompleteCallback& callback); |
+ |
+ std::string network_id_; |
+ std::vector<NetworkInfo> networks_; |
+ scoped_refptr<base::ObserverListThreadSafe<Observer>> observers_; |
+ NetworkInfoCallback network_info_callback_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(DiscoveryNetworkMonitor); |
+}; |
+ |
+#endif // CHROME_BROWSER_MEDIA_ROUTER_DISCOVERY_DISCOVERY_NETWORK_MONITOR_H_ |