Observe IP address change in connectivity_checker.

chromecast/net/connectivity_checker.cc

 // 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.
 
 #include "chromecast/net/connectivity_checker.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "chromecast/net/net_switches.h"
@@ skipping 42 matching lines @@
   connectivity_check_url_.reset(new GURL(
       check_url_str.empty() ? kDefaultConnectivityCheckUrl : check_url_str));
 
   net::URLRequestContextBuilder builder;
   builder.set_proxy_config_service(
       new net::ProxyConfigServiceFixed(net::ProxyConfig::CreateDirect()));
   builder.DisableHttpCache();
   url_request_context_.reset(builder.Build());
 
   net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
+  net::NetworkChangeNotifier::AddIPAddressObserver(this);
   loop_proxy_->PostTask(FROM_HERE,
                         base::Bind(&ConnectivityChecker::Check, this));
 }
 
 ConnectivityChecker::~ConnectivityChecker() {
   DCHECK(loop_proxy_.get());
+  net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
+  net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
   loop_proxy_->DeleteSoon(FROM_HERE, url_request_context_.release());
   loop_proxy_->DeleteSoon(FROM_HERE, url_request_.release());
 }
 
 void ConnectivityChecker::AddConnectivityObserver(
     ConnectivityObserver* observer) {
   connectivity_observer_list_->AddObserver(observer);
 }
 
 void ConnectivityChecker::RemoveConnectivityObserver(
@@ skipping 30 matching lines @@
 
   VLOG(1) << "Connectivity check: url=" << *connectivity_check_url_;
   url_request_ = url_request_context_->CreateRequest(
       *connectivity_check_url_, net::MAXIMUM_PRIORITY, this, NULL);
   url_request_->set_method("HEAD");
   url_request_->Start();
 }
 
 void ConnectivityChecker::OnConnectionTypeChanged(
     net::NetworkChangeNotifier::ConnectionType type) {
+  VLOG(2) << "OnConnectionTypeChanged " << type;
   if (type == net::NetworkChangeNotifier::CONNECTION_NONE)
     SetConnectivity(false);
 
   Cancel();
   Check();
 }
 
+void ConnectivityChecker::OnIPAddressChanged() {
+  VLOG(2) << "OnIPAddressChanged";
+
+  Cancel();
+  Check();
+}
+
 void ConnectivityChecker::OnResponseStarted(net::URLRequest* request) {
   int http_response_code =
       (request->status().is_success() &&
        request->response_info().headers.get() != NULL)
           ? request->response_info().headers->response_code()
           : net::HTTP_BAD_REQUEST;
 
   // Clears resources.
   url_request_.reset(NULL);  // URLRequest::Cancel() is called in destructor.
 
@@ skipping 23 matching lines @@
 }
 
 void ConnectivityChecker::Cancel() {
   if (url_request_.get()) {
     VLOG(2) << "Cancel connectivity check in progress";
     url_request_.reset(NULL);  // URLRequest::Cancel() is called in destructor.
   }
 }
 
 }  // namespace chromecast