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| 1 // Copyright 2015 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/host_resolver_mojo.h" |
| 6 |
| 7 #include "net/base/address_list.h" |
| 8 #include "net/base/net_errors.h" |
| 9 #include "net/base/net_log.h" |
| 10 #include "net/dns/mojo_type_converters.h" |
| 11 #include "third_party/mojo/src/mojo/public/cpp/bindings/binding.h" |
| 12 #include "third_party/mojo/src/mojo/public/cpp/bindings/error_handler.h" |
| 13 |
| 14 namespace net { |
| 15 |
| 16 class HostResolverMojo::Job : public interfaces::HostResolverRequestClient, |
| 17 public mojo::ErrorHandler { |
| 18 public: |
| 19 Job(AddressList* addresses, |
| 20 const CompletionCallback& callback, |
| 21 mojo::InterfaceRequest<interfaces::HostResolverRequestClient> request); |
| 22 |
| 23 private: |
| 24 // interfaces::HostResolverRequestClient override. |
| 25 void ReportResult(int32_t error, |
| 26 interfaces::AddressListPtr address_list) override; |
| 27 |
| 28 // mojo::ErrorHandler override. |
| 29 void OnConnectionError() override; |
| 30 |
| 31 AddressList* addresses_; |
| 32 CompletionCallback callback_; |
| 33 mojo::Binding<interfaces::HostResolverRequestClient> binding_; |
| 34 }; |
| 35 |
| 36 HostResolverMojo::HostResolverMojo(interfaces::HostResolverPtr resolver, |
| 37 const base::Closure& disconnect_callback) |
| 38 : resolver_(resolver.Pass()), disconnect_callback_(disconnect_callback) { |
| 39 if (!disconnect_callback_.is_null()) |
| 40 resolver_.set_error_handler(this); |
| 41 } |
| 42 |
| 43 HostResolverMojo::~HostResolverMojo() = default; |
| 44 |
| 45 int HostResolverMojo::Resolve(const RequestInfo& info, |
| 46 RequestPriority priority, |
| 47 AddressList* addresses, |
| 48 const CompletionCallback& callback, |
| 49 RequestHandle* request_handle, |
| 50 const BoundNetLog& source_net_log) { |
| 51 DCHECK(thread_checker_.CalledOnValidThread()); |
| 52 DVLOG(1) << "Resolve " << info.host_port_pair().ToString(); |
| 53 interfaces::HostResolverRequestClientPtr handle; |
| 54 *request_handle = new Job(addresses, callback, mojo::GetProxy(&handle)); |
| 55 resolver_->Resolve(interfaces::HostResolverRequestInfo::From(info), |
| 56 handle.Pass()); |
| 57 return ERR_IO_PENDING; |
| 58 } |
| 59 |
| 60 int HostResolverMojo::ResolveFromCache(const RequestInfo& info, |
| 61 AddressList* addresses, |
| 62 const BoundNetLog& source_net_log) { |
| 63 DCHECK(thread_checker_.CalledOnValidThread()); |
| 64 DVLOG(1) << "ResolveFromCache " << info.host_port_pair().ToString(); |
| 65 // TODO(sammc): Support caching. |
| 66 return ERR_DNS_CACHE_MISS; |
| 67 } |
| 68 |
| 69 void HostResolverMojo::CancelRequest(RequestHandle req) { |
| 70 DCHECK(thread_checker_.CalledOnValidThread()); |
| 71 // Deleting the Job closes the HostResolverRequestClient connection, |
| 72 // signalling cancellation of the request. |
| 73 delete static_cast<Job*>(req); |
| 74 } |
| 75 |
| 76 void HostResolverMojo::OnConnectionError() { |
| 77 DCHECK(!disconnect_callback_.is_null()); |
| 78 disconnect_callback_.Run(); |
| 79 } |
| 80 |
| 81 HostResolverMojo::Job::Job( |
| 82 AddressList* addresses, |
| 83 const CompletionCallback& callback, |
| 84 mojo::InterfaceRequest<interfaces::HostResolverRequestClient> request) |
| 85 : addresses_(addresses), |
| 86 callback_(callback), |
| 87 binding_(this, request.Pass()) { |
| 88 binding_.set_error_handler(this); |
| 89 } |
| 90 |
| 91 void HostResolverMojo::Job::ReportResult( |
| 92 int32_t error, |
| 93 interfaces::AddressListPtr address_list) { |
| 94 if (error == OK && address_list) |
| 95 *addresses_ = address_list->To<AddressList>(); |
| 96 callback_.Run(error); |
| 97 delete this; |
| 98 } |
| 99 |
| 100 void HostResolverMojo::Job::OnConnectionError() { |
| 101 ReportResult(ERR_FAILED, interfaces::AddressListPtr()); |
| 102 } |
| 103 |
| 104 } // namespace net |
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