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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "net/dns/dns_client.h" | |
6 | |
7 #include "base/bind.h" | |
8 #include "base/rand_util.h" | |
9 #include "net/base/net_log.h" | |
10 #include "net/dns/address_sorter.h" | |
11 #include "net/dns/dns_config_service.h" | |
12 #include "net/dns/dns_session.h" | |
13 #include "net/dns/dns_socket_pool.h" | |
14 #include "net/dns/dns_transaction.h" | |
15 #include "net/socket/client_socket_factory.h" | |
16 | |
17 namespace net { | |
18 | |
19 namespace { | |
20 | |
21 class DnsClientImpl : public DnsClient { | |
22 public: | |
23 explicit DnsClientImpl(NetLog* net_log) | |
24 : address_sorter_(AddressSorter::CreateAddressSorter()), | |
25 net_log_(net_log) {} | |
26 | |
27 void SetConfig(const DnsConfig& config) override { | |
28 factory_.reset(); | |
29 session_ = NULL; | |
30 if (config.IsValid() && !config.unhandled_options) { | |
31 ClientSocketFactory* factory = ClientSocketFactory::GetDefaultFactory(); | |
32 scoped_ptr<DnsSocketPool> socket_pool( | |
33 config.randomize_ports ? DnsSocketPool::CreateDefault(factory) | |
34 : DnsSocketPool::CreateNull(factory)); | |
35 session_ = new DnsSession(config, | |
36 socket_pool.Pass(), | |
37 base::Bind(&base::RandInt), | |
38 net_log_); | |
39 factory_ = DnsTransactionFactory::CreateFactory(session_.get()); | |
40 } | |
41 } | |
42 | |
43 const DnsConfig* GetConfig() const override { | |
44 return session_.get() ? &session_->config() : NULL; | |
45 } | |
46 | |
47 DnsTransactionFactory* GetTransactionFactory() override { | |
48 return session_.get() ? factory_.get() : NULL; | |
49 } | |
50 | |
51 AddressSorter* GetAddressSorter() override { return address_sorter_.get(); } | |
52 | |
53 private: | |
54 scoped_refptr<DnsSession> session_; | |
55 scoped_ptr<DnsTransactionFactory> factory_; | |
56 scoped_ptr<AddressSorter> address_sorter_; | |
57 | |
58 NetLog* net_log_; | |
59 }; | |
60 | |
61 } // namespace | |
62 | |
63 // static | |
64 scoped_ptr<DnsClient> DnsClient::CreateClient(NetLog* net_log) { | |
65 return scoped_ptr<DnsClient>(new DnsClientImpl(net_log)); | |
66 } | |
67 | |
68 } // namespace net | |
69 | |
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