chrome/browser/local_discovery/service_discovery_client_utility.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_LOCAL_DISCOVERY_SERVICE_DISCOVERY_CLIENT_UTILITY_H_
   6 #define CHROME_BROWSER_LOCAL_DISCOVERY_SERVICE_DISCOVERY_CLIENT_UTILITY_H_
   7
   8 #include <string>
   9
  10 #include "base/cancelable_callback.h"
  11 #include "chrome/browser/local_discovery/service_discovery_shared_client.h"
  12 #include "chrome/common/local_discovery/service_discovery_client.h"
  13 #include "net/base/network_change_notifier.h"
  14
  15 namespace local_discovery {
  16
  17 class ServiceDiscoveryHostClient;
  18
  19 // Wrapper for ServiceDiscoveryHostClient to hide  restarting of utility process
  20 // from mdns users.
  21 class ServiceDiscoveryClientUtility
  22     : public ServiceDiscoverySharedClient,
  23       public net::NetworkChangeNotifier::NetworkChangeObserver {
  24  public:
  25   ServiceDiscoveryClientUtility();
  26
  27   // ServiceDiscoveryClient implementation.
  28   scoped_ptr<ServiceWatcher> CreateServiceWatcher(
  29       const std::string& service_type,
  30       const ServiceWatcher::UpdatedCallback& callback) override;
  31   scoped_ptr<ServiceResolver> CreateServiceResolver(
  32       const std::string& service_name,
  33       const ServiceResolver::ResolveCompleteCallback& callback) override;
  34   scoped_ptr<LocalDomainResolver> CreateLocalDomainResolver(
  35       const std::string& domain,
  36       net::AddressFamily address_family,
  37       const LocalDomainResolver::IPAddressCallback& callback) override;
  38
  39   // net::NetworkChangeNotifier::NetworkChangeObserver implementation.
  40   void OnNetworkChanged(
  41       net::NetworkChangeNotifier::ConnectionType type) override;
  42
  43  private:
  44   friend class base::RefCounted<ServiceDiscoveryClientUtility>;
  45
  46   ~ServiceDiscoveryClientUtility() override;
  47   void ScheduleStartNewClient();
  48   void StartNewClient();
  49   void ReportSuccess();
  50
  51   scoped_refptr<ServiceDiscoveryHostClient> host_client_;
  52   int restart_attempts_;
  53   base::WeakPtrFactory<ServiceDiscoveryClientUtility> weak_ptr_factory_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(ServiceDiscoveryClientUtility);
  56 };
  57
  58 }  // namespace local_discovery
  59
  60 #endif  // CHROME_BROWSER_LOCAL_DISCOVERY_SERVICE_DISCOVERY_CLIENT_UTILITY_H_