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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #ifndef CHROME_BROWSER_NET_DNS_PROBE_RUNNER_H_ | 5 #ifndef CHROME_BROWSER_NET_DNS_PROBE_RUNNER_H_ |
6 #define CHROME_BROWSER_NET_DNS_PROBE_RUNNER_H_ | 6 #define CHROME_BROWSER_NET_DNS_PROBE_RUNNER_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/bind.h" | 9 #include "base/bind.h" |
10 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
11 #include "base/memory/weak_ptr.h" | 11 #include "base/memory/weak_ptr.h" |
12 | 12 |
13 namespace net { | 13 namespace net { |
14 class DnsClient; | 14 class DnsClient; |
15 class DnsResponse; | 15 class DnsResponse; |
16 class DnsTransaction; | 16 class DnsTransaction; |
17 } | 17 } |
18 | 18 |
19 namespace chrome_browser_net { | 19 namespace chrome_browser_net { |
20 | 20 |
21 // Runs DNS probes using a single DnsClient and evaluates the responses. | 21 // Runs DNS probes using a single DnsClient and evaluates the responses. |
22 // (Currently requests A records for google.com and expects at least one IP | 22 // (Currently requests A records for google.com and expects at least one IP |
23 // address in the response.) | 23 // address in the response.) |
24 // Used by DnsProbeService to probe the system and public DNS configurations. | 24 // Used by DnsProbeService to probe the system and public DNS configurations. |
25 class DnsProbeRunner { | 25 class DnsProbeRunner { |
26 public: | 26 public: |
27 static const char* kKnownGoodHostname; | 27 static const char kKnownGoodHostname[]; |
28 | 28 |
29 // Used in histograms; add new entries at the bottom, and don't remove any. | 29 // Used in histograms; add new entries at the bottom, and don't remove any. |
30 enum Result { | 30 enum Result { |
31 UNKNOWN, | 31 UNKNOWN, |
32 CORRECT, // Response contains at least one A record. | 32 CORRECT, // Response contains at least one A record. |
33 INCORRECT, // Response claimed success but included no A records. | 33 INCORRECT, // Response claimed success but included no A records. |
34 FAILING, // Response included an error or was malformed. | 34 FAILING, // Response included an error or was malformed. |
35 UNREACHABLE // No response received (timeout, network unreachable, etc.). | 35 UNREACHABLE // No response received (timeout, network unreachable, etc.). |
36 }; | 36 }; |
37 | 37 |
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76 Result result_; | 76 Result result_; |
77 | 77 |
78 base::WeakPtrFactory<DnsProbeRunner> weak_factory_; | 78 base::WeakPtrFactory<DnsProbeRunner> weak_factory_; |
79 | 79 |
80 DISALLOW_COPY_AND_ASSIGN(DnsProbeRunner); | 80 DISALLOW_COPY_AND_ASSIGN(DnsProbeRunner); |
81 }; | 81 }; |
82 | 82 |
83 } // namespace chrome_browser_net | 83 } // namespace chrome_browser_net |
84 | 84 |
85 #endif // CHROME_BROWSER_NET_DNS_PROBE_RUNNER_H_ | 85 #endif // CHROME_BROWSER_NET_DNS_PROBE_RUNNER_H_ |
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