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60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_QUIC_NETWORK_CONNECTION_H_
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#define NET_QUIC_NETWORK_CONNECTION_H_
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#include "base/macros.h"
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#include "net/base/net_export.h"
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#include "net/base/network_change_notifier.h"
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namespace net {
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// This class stores information about the current network type and
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// provides a textual description of it.
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class NET_EXPORT NetworkConnection
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: public NetworkChangeNotifier::IPAddressObserver,
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public NetworkChangeNotifier::ConnectionTypeObserver {
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public:
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NetworkConnection();
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~NetworkConnection() override;
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// Returns the underlying connection type.
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NetworkChangeNotifier::ConnectionType connection_type() {
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return connection_type_;
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}
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// Return a string equivalent of current connection type. Callers don't need
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// to make a copy of the returned C-string value. If the connection type is
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// CONNECTION_WIFI, then we'll tease out some details when we are on WiFi, and
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// hopefully leave only ethernet (with no WiFi available) in the
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// CONNECTION_UNKNOWN category. This *might* err if there is both ethernet,
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// as well as WiFi, where WiFi was not being used that much. Most platforms
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// don't distinguish Wifi vs Etherenet, and call everything CONNECTION_UNKNOWN
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// :-(. Fo non CONNECTIION_WIFI, this returns the C-string returned by
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// NetworkChangeNotifier::ConnectionTypeToString.
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const char* connection_description() { return connection_description_; }
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// NetworkChangeNotifier::IPAddressObserver methods:
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void OnIPAddressChanged() override;
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// NetworkChangeNotifier::ConnectionTypeObserver methods:
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void OnConnectionTypeChanged(
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NetworkChangeNotifier::ConnectionType type) override;
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private:
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// Cache the connection type to avoid calling the potentially expensive
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// NetworkChangeNotifier::GetConnectionType() function.
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NetworkChangeNotifier::ConnectionType connection_type_;
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// Cache the connection description string to avoid calling the expensive
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// GetWifiPHYLayerProtocol() function.
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const char* connection_description_;
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DISALLOW_COPY_AND_ASSIGN(NetworkConnection);
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};
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} // namespace net
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#endif // NET_QUIC_NETWORK_CONNECTION_H_
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