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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chromecast/net/connectivity_checker.h" | 5 #include "chromecast/net/connectivity_checker.h" |
6 | 6 |
7 #include "base/command_line.h" | 7 #include "base/command_line.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/message_loop/message_loop.h" | 9 #include "base/message_loop/message_loop.h" |
10 #include "chromecast/net/net_switches.h" | 10 #include "chromecast/net/net_switches.h" |
11 #include "net/base/request_priority.h" | 11 #include "net/base/request_priority.h" |
12 #include "net/http/http_response_headers.h" | 12 #include "net/http/http_response_headers.h" |
13 #include "net/http/http_response_info.h" | 13 #include "net/http/http_response_info.h" |
14 #include "net/http/http_status_code.h" | 14 #include "net/http/http_status_code.h" |
15 #include "net/proxy/proxy_config.h" | 15 #include "net/proxy/proxy_config.h" |
16 #include "net/proxy/proxy_config_service_fixed.h" | 16 #include "net/proxy/proxy_config_service_fixed.h" |
17 #include "net/url_request/url_request_context.h" | 17 #include "net/url_request/url_request_context.h" |
18 #include "net/url_request/url_request_context_builder.h" | 18 #include "net/url_request/url_request_context_builder.h" |
19 | 19 |
20 namespace chromecast { | 20 namespace chromecast { |
21 | 21 |
22 namespace { | 22 namespace { |
23 | 23 |
24 // How often connectivity checks are performed in seconds | 24 // How often connectivity checks are performed in seconds. |
25 const unsigned int kConnectivityPeriodSeconds = 1; | 25 const unsigned int kConnectivityPeriodSeconds = 1; |
26 | 26 |
27 // Number of consecutive bad responses received before connectivity status is | 27 // Number of consecutive connectivity check errors before status is changed |
28 // changed to offline | 28 // to offline. |
29 const unsigned int kNumBadResponses = 3; | 29 const unsigned int kNumErrorsToNotifyOffline = 3; |
30 | 30 |
31 // Default url for connectivity checking. | 31 // Default url for connectivity checking. |
32 const char kDefaultConnectivityCheckUrl[] = | 32 const char kDefaultConnectivityCheckUrl[] = |
33 "https://clients3.google.com/generate_204"; | 33 "https://clients3.google.com/generate_204"; |
34 | 34 |
35 } // namespace | 35 } // namespace |
36 | 36 |
37 ConnectivityChecker::ConnectivityChecker( | 37 ConnectivityChecker::ConnectivityChecker( |
38 const scoped_refptr<base::MessageLoopProxy>& loop_proxy) | 38 const scoped_refptr<base::MessageLoopProxy>& loop_proxy) |
39 : connectivity_observer_list_( | 39 : connectivity_observer_list_( |
40 new ObserverListThreadSafe<ConnectivityObserver>()), | 40 new ObserverListThreadSafe<ConnectivityObserver>()), |
41 loop_proxy_(loop_proxy), | 41 loop_proxy_(loop_proxy), |
42 connected_(false), | 42 connected_(false), |
43 bad_responses_(0) { | 43 check_errors_(0) { |
44 DCHECK(loop_proxy_.get()); | 44 DCHECK(loop_proxy_.get()); |
45 loop_proxy->PostTask(FROM_HERE, | 45 loop_proxy->PostTask(FROM_HERE, |
46 base::Bind(&ConnectivityChecker::Initialize, this)); | 46 base::Bind(&ConnectivityChecker::Initialize, this)); |
47 } | 47 } |
48 | 48 |
49 void ConnectivityChecker::Initialize() { | 49 void ConnectivityChecker::Initialize() { |
50 base::CommandLine* command_line = base::CommandLine::ForCurrentProcess(); | 50 base::CommandLine* command_line = base::CommandLine::ForCurrentProcess(); |
51 base::CommandLine::StringType check_url_str = | 51 base::CommandLine::StringType check_url_str = |
52 command_line->GetSwitchValueNative(switches::kConnectivityCheckUrl); | 52 command_line->GetSwitchValueNative(switches::kConnectivityCheckUrl); |
53 connectivity_check_url_.reset(new GURL( | 53 connectivity_check_url_.reset(new GURL( |
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98 } | 98 } |
99 | 99 |
100 void ConnectivityChecker::Check() { | 100 void ConnectivityChecker::Check() { |
101 if (!loop_proxy_->BelongsToCurrentThread()) { | 101 if (!loop_proxy_->BelongsToCurrentThread()) { |
102 loop_proxy_->PostTask(FROM_HERE, | 102 loop_proxy_->PostTask(FROM_HERE, |
103 base::Bind(&ConnectivityChecker::Check, this)); | 103 base::Bind(&ConnectivityChecker::Check, this)); |
104 return; | 104 return; |
105 } | 105 } |
106 DCHECK(url_request_context_.get()); | 106 DCHECK(url_request_context_.get()); |
107 | 107 |
108 // Don't check connectivity if network is offline, because internet could be | 108 // Don't check connectivity if network is offline, because Internet could be |
109 // accessible via netifs ignored. | 109 // accessible via netifs ignored. |
110 if (net::NetworkChangeNotifier::IsOffline()) | 110 if (net::NetworkChangeNotifier::IsOffline()) |
111 return; | 111 return; |
112 | 112 |
113 // If url_request_ is non-null, there is already a check going on. Don't | 113 // If url_request_ is non-null, there is already a check going on. Don't |
114 // start another. | 114 // start another. |
115 if (url_request_.get()) | 115 if (url_request_.get()) |
116 return; | 116 return; |
117 | 117 |
118 VLOG(1) << "Connectivity check: url=" << *connectivity_check_url_; | 118 VLOG(1) << "Connectivity check: url=" << *connectivity_check_url_; |
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144 (request->status().is_success() && | 144 (request->status().is_success() && |
145 request->response_info().headers.get() != NULL) | 145 request->response_info().headers.get() != NULL) |
146 ? request->response_info().headers->response_code() | 146 ? request->response_info().headers->response_code() |
147 : net::HTTP_BAD_REQUEST; | 147 : net::HTTP_BAD_REQUEST; |
148 | 148 |
149 // Clears resources. | 149 // Clears resources. |
150 url_request_.reset(NULL); // URLRequest::Cancel() is called in destructor. | 150 url_request_.reset(NULL); // URLRequest::Cancel() is called in destructor. |
151 | 151 |
152 if (http_response_code < 400) { | 152 if (http_response_code < 400) { |
153 VLOG(1) << "Connectivity check succeeded"; | 153 VLOG(1) << "Connectivity check succeeded"; |
154 bad_responses_ = 0; | 154 check_errors_ = 0; |
155 SetConnectivity(true); | 155 SetConnectivity(true); |
156 return; | 156 return; |
157 } | 157 } |
| 158 VLOG(1) << "Connectivity check failed: " << http_response_code; |
| 159 OnUrlRequestError(); |
| 160 } |
158 | 161 |
159 VLOG(1) << "Connectivity check failed: " << http_response_code; | 162 void ConnectivityChecker::OnSSLCertificateError(net::URLRequest* request, |
160 ++bad_responses_; | 163 const net::SSLInfo& ssl_info, |
161 if (bad_responses_ > kNumBadResponses) { | 164 bool fatal) { |
162 bad_responses_ = kNumBadResponses; | 165 LOG(ERROR) << "OnSSLCertificateError"; |
| 166 OnUrlRequestError(); |
| 167 } |
| 168 |
| 169 void ConnectivityChecker::OnUrlRequestError() { |
| 170 ++check_errors_; |
| 171 if (check_errors_ > kNumErrorsToNotifyOffline) { |
| 172 check_errors_ = kNumErrorsToNotifyOffline; |
163 SetConnectivity(false); | 173 SetConnectivity(false); |
164 } | 174 } |
165 | 175 url_request_.reset(NULL); |
166 // Check again | 176 // Check again. |
167 loop_proxy_->PostDelayedTask( | 177 loop_proxy_->PostDelayedTask( |
168 FROM_HERE, base::Bind(&ConnectivityChecker::Check, this), | 178 FROM_HERE, base::Bind(&ConnectivityChecker::Check, this), |
169 base::TimeDelta::FromSeconds(kConnectivityPeriodSeconds)); | 179 base::TimeDelta::FromSeconds(kConnectivityPeriodSeconds)); |
170 } | 180 } |
171 | 181 |
172 void ConnectivityChecker::OnReadCompleted(net::URLRequest* request, | 182 void ConnectivityChecker::OnReadCompleted(net::URLRequest* request, |
173 int bytes_read) { | 183 int bytes_read) { |
174 NOTREACHED(); | 184 NOTREACHED(); |
175 } | 185 } |
176 | 186 |
177 void ConnectivityChecker::Cancel() { | 187 void ConnectivityChecker::Cancel() { |
178 if (url_request_.get()) { | 188 if (url_request_.get()) { |
179 VLOG(2) << "Cancel connectivity check in progress"; | 189 VLOG(2) << "Cancel connectivity check in progress"; |
180 url_request_.reset(NULL); // URLRequest::Cancel() is called in destructor. | 190 url_request_.reset(NULL); // URLRequest::Cancel() is called in destructor. |
181 } | 191 } |
182 } | 192 } |
183 | 193 |
184 } // namespace chromecast | 194 } // namespace chromecast |
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