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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/dns/dns_client.h"
#include "base/bind.h"
#include "base/rand_util.h"
#include "net/base/net_log.h"
#include "net/dns/dns_config_service.h"
#include "net/dns/dns_session.h"
#include "net/dns/dns_transaction.h"
#include "net/socket/client_socket_factory.h"
namespace net {
namespace {
class DnsClientImpl : public DnsClient {
public:
explicit DnsClientImpl(NetLog* net_log) : net_log_(net_log) {}
virtual void SetConfig(const DnsConfig& config) OVERRIDE {
factory_.reset();
session_.release();
if (config.IsValid()) {
session_ = new DnsSession(config,
ClientSocketFactory::GetDefaultFactory(),
base::Bind(&base::RandInt),
net_log_);
factory_ = DnsTransactionFactory::CreateFactory(session_);
}
}
virtual const DnsConfig* GetConfig() const OVERRIDE {
return session_.get() ? &session_->config() : NULL;
}
virtual DnsTransactionFactory* GetTransactionFactory() OVERRIDE {
return session_.get() ? factory_.get() : NULL;
}
private:
scoped_refptr<DnsSession> session_;
scoped_ptr<DnsTransactionFactory> factory_;
NetLog* net_log_;
};
} // namespace
// static
scoped_ptr<DnsClient> DnsClient::CreateClient(NetLog* net_log) {
return scoped_ptr<DnsClient>(new DnsClientImpl(net_log));
}
} // namespace net
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