| // Copyright 2015 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 CHROMECAST_NET_CONNECTIVITY_CHECKER_H_ |
| #define CHROMECAST_NET_CONNECTIVITY_CHECKER_H_ |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "net/base/network_change_notifier.h" |
| #include "net/url_request/url_request.h" |
| |
| class GURL; |
| |
| namespace base { |
| class MessageLoopProxy; |
| } |
| |
| namespace net { |
| class URLRequestContext; |
| } |
| |
| namespace chromecast { |
| |
| // Simple class to check network connectivity by sending a HEAD http request |
| // to given url. |
| class ConnectivityChecker |
| : public base::RefCountedThreadSafe<ConnectivityChecker>, |
| public net::URLRequest::Delegate, |
| public net::NetworkChangeNotifier::ConnectionTypeObserver, |
| public net::NetworkChangeNotifier::IPAddressObserver { |
| public: |
| class ConnectivityObserver { |
| public: |
| // Will be called when internet connectivity changes |
| virtual void OnConnectivityChanged(bool connected) = 0; |
| |
| protected: |
| ConnectivityObserver() {} |
| virtual ~ConnectivityObserver() {} |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(ConnectivityObserver); |
| }; |
| |
| explicit ConnectivityChecker( |
| const scoped_refptr<base::MessageLoopProxy>& loop_proxy); |
| |
| void AddConnectivityObserver(ConnectivityObserver* observer); |
| void RemoveConnectivityObserver(ConnectivityObserver* observer); |
| |
| // Returns if there is internet connectivity |
| bool Connected() const; |
| |
| // Checks for connectivity |
| void Check(); |
| |
| protected: |
| ~ConnectivityChecker() override; |
| |
| private: |
| friend class base::RefCountedThreadSafe<ConnectivityChecker>; |
| |
| // UrlRequest::Delegate implementation: |
| void OnResponseStarted(net::URLRequest* request) override; |
| void OnReadCompleted(net::URLRequest* request, int bytes_read) override; |
| |
| // Initializes ConnectivityChecker |
| void Initialize(); |
| |
| // NetworkChangeNotifier::ConnectionTypeObserver implementation: |
| void OnConnectionTypeChanged( |
| net::NetworkChangeNotifier::ConnectionType type) override; |
| |
| // net::NetworkChangeNotifier::IPAddressObserver implementation: |
| void OnIPAddressChanged() override; |
| |
| // Cancels current connectivity checking in progress. |
| void Cancel(); |
| |
| // Sets connectivity and alerts observers if it has changed |
| void SetConnectivity(bool connected); |
| |
| scoped_ptr<GURL> connectivity_check_url_; |
| scoped_ptr<net::URLRequestContext> url_request_context_; |
| scoped_ptr<net::URLRequest> url_request_; |
| const scoped_refptr<ObserverListThreadSafe<ConnectivityObserver> > |
| connectivity_observer_list_; |
| const scoped_refptr<base::MessageLoopProxy> loop_proxy_; |
| bool connected_; |
| unsigned int bad_responses_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ConnectivityChecker); |
| }; |
| |
| } // namespace chromecast |
| |
| #endif // CHROMECAST_NET_CONNECTIVITY_CHECKER_H_ |