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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 // See header file for description of RendererDnsPrefetch class | 5 // See header file for description of RendererDnsPrefetch class |
6 | 6 |
7 #include "components/network_hints/renderer/renderer_dns_prefetch.h" | 7 #include "components/network_hints/renderer/renderer_dns_prefetch.h" |
8 | 8 |
9 #include <ctype.h> | 9 #include <ctype.h> |
10 | 10 |
11 #include "base/bind.h" | 11 #include "base/bind.h" |
12 #include "base/location.h" | 12 #include "base/location.h" |
13 #include "base/logging.h" | 13 #include "base/logging.h" |
14 #include "base/message_loop/message_loop.h" | 14 #include "base/message_loop/message_loop.h" |
15 #include "base/threading/thread_task_runner_handle.h" | 15 #include "base/threading/thread_task_runner_handle.h" |
16 #include "components/network_hints/common/network_hints_common.h" | 16 #include "components/network_hints/common/network_hints_common.h" |
| 17 #include "components/network_hints/common/network_hints_messages.h" |
17 #include "components/network_hints/renderer/dns_prefetch_queue.h" | 18 #include "components/network_hints/renderer/dns_prefetch_queue.h" |
18 #include "content/public/renderer/render_thread.h" | 19 #include "content/public/renderer/render_thread.h" |
19 #include "services/shell/public/cpp/interface_provider.h" | |
20 | 20 |
21 using content::RenderThread; | 21 using content::RenderThread; |
22 | 22 |
23 namespace network_hints { | 23 namespace network_hints { |
24 | 24 |
25 RendererDnsPrefetch::RendererDnsPrefetch() | 25 RendererDnsPrefetch::RendererDnsPrefetch() |
26 : c_string_queue_(1000), | 26 : c_string_queue_(1000), |
27 weak_factory_(this) { | 27 weak_factory_(this) { |
28 Reset(); | 28 Reset(); |
29 } | 29 } |
30 | 30 |
31 RendererDnsPrefetch::~RendererDnsPrefetch() { | 31 RendererDnsPrefetch::~RendererDnsPrefetch() { |
32 } | 32 } |
33 | 33 |
34 void RendererDnsPrefetch::Reset() { | 34 void RendererDnsPrefetch::Reset() { |
35 domain_map_.clear(); | 35 domain_map_.clear(); |
36 c_string_queue_.Clear(); | 36 c_string_queue_.Clear(); |
37 buffer_full_discard_count_ = 0; | 37 buffer_full_discard_count_ = 0; |
38 numeric_ip_discard_count_ = 0; | 38 numeric_ip_discard_count_ = 0; |
39 new_name_count_ = 0; | 39 new_name_count_ = 0; |
40 } | 40 } |
41 | 41 |
42 mojom::NetworkHints& RendererDnsPrefetch::GetNetworkHints() { | |
43 DCHECK(content::RenderThread::Get()); | |
44 if (!network_hints_) { | |
45 RenderThread::Get()->GetRemoteInterfaces()->GetInterface( | |
46 mojo::GetProxy(&network_hints_)); | |
47 } | |
48 return *network_hints_; | |
49 } | |
50 | |
51 // Push names into queue quickly! | 42 // Push names into queue quickly! |
52 void RendererDnsPrefetch::Resolve(const char* name, size_t length) { | 43 void RendererDnsPrefetch::Resolve(const char* name, size_t length) { |
53 DCHECK(content::RenderThread::Get()); | 44 DCHECK(content::RenderThread::Get()); |
54 if (!length) | 45 if (!length) |
55 return; // Don't store empty strings in buffer. | 46 return; // Don't store empty strings in buffer. |
56 if (is_numeric_ip(name, length)) | 47 if (is_numeric_ip(name, length)) |
57 return; // Numeric IPs have no DNS lookup significance. | 48 return; // Numeric IPs have no DNS lookup significance. |
58 | 49 |
59 size_t old_size = c_string_queue_.Size(); | 50 size_t old_size = c_string_queue_.Size(); |
60 DnsQueue::PushResult result = c_string_queue_.Push(name, length); | 51 DnsQueue::PushResult result = c_string_queue_.Push(name, length); |
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155 if (1 == max_count) break; | 146 if (1 == max_count) break; |
156 --max_count; | 147 --max_count; |
157 DCHECK_GE(max_count, 1u); | 148 DCHECK_GE(max_count, 1u); |
158 } | 149 } |
159 } | 150 } |
160 DCHECK_GE(new_name_count_, domains_handled); | 151 DCHECK_GE(new_name_count_, domains_handled); |
161 new_name_count_ -= domains_handled; | 152 new_name_count_ -= domains_handled; |
162 | 153 |
163 network_hints::LookupRequest request; | 154 network_hints::LookupRequest request; |
164 request.hostname_list = names; | 155 request.hostname_list = names; |
165 GetNetworkHints().DNSPrefetch(request); | 156 RenderThread::Get()->Send(new NetworkHintsMsg_DNSPrefetch(request)); |
166 } | 157 } |
167 | 158 |
168 // is_numeric_ip() checks to see if all characters in name are either numeric, | 159 // is_numeric_ip() checks to see if all characters in name are either numeric, |
169 // or dots. Such a name will not actually be passed to DNS, as it is an IP | 160 // or dots. Such a name will not actually be passed to DNS, as it is an IP |
170 // address. | 161 // address. |
171 bool RendererDnsPrefetch::is_numeric_ip(const char* name, size_t length) { | 162 bool RendererDnsPrefetch::is_numeric_ip(const char* name, size_t length) { |
172 // Scan for a character outside our lookup list. | 163 // Scan for a character outside our lookup list. |
173 while (length-- > 0) { | 164 while (length-- > 0) { |
174 if (!isdigit(*name) && '.' != *name) | 165 if (!isdigit(*name) && '.' != *name) |
175 return false; | 166 return false; |
176 ++name; | 167 ++name; |
177 } | 168 } |
178 return true; | 169 return true; |
179 } | 170 } |
180 | 171 |
181 } // namespace predictor | 172 } // namespace predictor |
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