mirror of
https://github.com/klzgrad/naiveproxy.git
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107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
// Copyright (c) 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "net/tools/quic/synchronous_host_resolver.h"
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#include "base/at_exit.h"
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#include "base/location.h"
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#include "base/macros.h"
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#include "base/memory/weak_ptr.h"
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#include "base/message_loop/message_loop.h"
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#include "base/run_loop.h"
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#include "base/single_thread_task_runner.h"
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#include "base/threading/simple_thread.h"
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#include "base/threading/thread_task_runner_handle.h"
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#include "net/base/host_port_pair.h"
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#include "net/base/net_errors.h"
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#include "net/dns/host_resolver_impl.h"
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#include "net/log/net_log.h"
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#include "net/log/net_log_with_source.h"
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namespace net {
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namespace {
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class ResolverThread : public base::SimpleThread {
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public:
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ResolverThread();
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~ResolverThread() override;
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// Called on the main thread.
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int Resolve(const std::string& host, AddressList* addresses);
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// SimpleThread methods:
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void Run() override;
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private:
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void OnResolutionComplete(int rv);
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AddressList* addresses_;
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std::string host_;
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int rv_;
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base::WeakPtrFactory<ResolverThread> weak_factory_;
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DISALLOW_COPY_AND_ASSIGN(ResolverThread);
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};
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ResolverThread::ResolverThread()
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: SimpleThread("resolver_thread"),
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rv_(ERR_UNEXPECTED),
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weak_factory_(this) {}
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ResolverThread::~ResolverThread() = default;
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void ResolverThread::Run() {
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base::MessageLoopForIO loop;
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net::NetLog net_log;
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net::HostResolver::Options options;
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options.max_concurrent_resolves = 6;
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options.max_retry_attempts = 3u;
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std::unique_ptr<net::HostResolverImpl> resolver(
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new net::HostResolverImpl(options, &net_log));
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std::unique_ptr<net::HostResolver::Request> request;
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HostPortPair host_port_pair(host_, 80);
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rv_ = resolver->Resolve(HostResolver::RequestInfo(host_port_pair),
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DEFAULT_PRIORITY, addresses_,
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base::Bind(&ResolverThread::OnResolutionComplete,
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weak_factory_.GetWeakPtr()),
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&request, NetLogWithSource());
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if (rv_ != ERR_IO_PENDING)
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return;
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// Run the mesage loop until OnResolutionComplete quits it.
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base::RunLoop().Run();
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}
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int ResolverThread::Resolve(const std::string& host, AddressList* addresses) {
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host_ = host;
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addresses_ = addresses;
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this->Start();
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this->Join();
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return rv_;
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}
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void ResolverThread::OnResolutionComplete(int rv) {
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rv_ = rv;
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base::ThreadTaskRunnerHandle::Get()->PostTask(
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FROM_HERE, base::MessageLoop::QuitWhenIdleClosure());
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}
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} // namespace
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// static
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int SynchronousHostResolver::Resolve(const std::string& host,
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AddressList* addresses) {
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ResolverThread resolver;
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return resolver.Resolve(host, addresses);
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}
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} // namespace net
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