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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 // This is a small utility that snarfs the server time from the | 5 // This is a small utility that snarfs the server time from the |
| 6 // response headers of an http/https HEAD request and compares it to | 6 // response headers of an http/https HEAD request and compares it to |
| 7 // the local time. | 7 // the local time. |
| 8 // | 8 // |
| 9 // TODO(akalin): Also snarf the server time from the TLS handshake, if | 9 // TODO(akalin): Also snarf the server time from the TLS handshake, if |
| 10 // any (http://crbug.com/146090). | 10 // any (http://crbug.com/146090). |
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| 137 // Builds a URLRequestContext assuming there's only a single loop. | 137 // Builds a URLRequestContext assuming there's only a single loop. |
| 138 scoped_ptr<net::URLRequestContext> | 138 scoped_ptr<net::URLRequestContext> |
| 139 BuildURLRequestContext(net::NetLog* net_log) { | 139 BuildURLRequestContext(net::NetLog* net_log) { |
| 140 net::URLRequestContextBuilder builder; | 140 net::URLRequestContextBuilder builder; |
| 141 #if defined(OS_LINUX) | 141 #if defined(OS_LINUX) |
| 142 // On Linux, use a fixed ProxyConfigService, since the default one | 142 // On Linux, use a fixed ProxyConfigService, since the default one |
| 143 // depends on glib. | 143 // depends on glib. |
| 144 // | 144 // |
| 145 // TODO(akalin): Remove this once http://crbug.com/146421 is fixed. | 145 // TODO(akalin): Remove this once http://crbug.com/146421 is fixed. |
| 146 builder.set_proxy_config_service( | 146 builder.set_proxy_config_service( |
| 147 new net::ProxyConfigServiceFixed(net::ProxyConfig())); | 147 make_scoped_ptr(new net::ProxyConfigServiceFixed(net::ProxyConfig()))); |
| 148 #endif | 148 #endif |
| 149 scoped_ptr<net::URLRequestContext> context(builder.Build()); | 149 scoped_ptr<net::URLRequestContext> context(builder.Build()); |
| 150 context->set_net_log(net_log); | 150 context->set_net_log(net_log); |
| 151 return context.Pass(); | 151 return context.Pass(); |
| 152 } | 152 } |
| 153 | 153 |
| 154 // Assuming that the time |server_time| was received from a server, | 154 // Assuming that the time |server_time| was received from a server, |
| 155 // that the request for the server was started on |start_ticks|, and | 155 // that the request for the server was started on |start_ticks|, and |
| 156 // that it ended on |end_ticks|, fills |server_now| with an estimate | 156 // that it ended on |end_ticks|, fills |server_now| with an estimate |
| 157 // of the current time and |server_now_uncertainty| with a | 157 // of the current time and |server_now_uncertainty| with a |
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| 317 &skew, &skew_uncertainty); | 317 &skew, &skew_uncertainty); |
| 318 | 318 |
| 319 std::printf( | 319 std::printf( |
| 320 "An estimate for the local clock skew is %.2f ms with " | 320 "An estimate for the local clock skew is %.2f ms with " |
| 321 "uncertainty %.2f ms\n", | 321 "uncertainty %.2f ms\n", |
| 322 skew.InMillisecondsF(), | 322 skew.InMillisecondsF(), |
| 323 skew_uncertainty.InMillisecondsF()); | 323 skew_uncertainty.InMillisecondsF()); |
| 324 | 324 |
| 325 return EXIT_SUCCESS; | 325 return EXIT_SUCCESS; |
| 326 } | 326 } |
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