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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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