chromium/net/dns/host_resolver_internal_result.h

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_DNS_HOST_RESOLVER_INTERNAL_RESULT_H_
#define NET_DNS_HOST_RESOLVER_INTERNAL_RESULT_H_

#include <map>
#include <memory>
#include <optional>
#include <string>
#include <tuple>
#include <vector>

#include "base/time/time.h"
#include "base/values.h"
#include "net/base/connection_endpoint_metadata.h"
#include "net/base/host_port_pair.h"
#include "net/base/ip_endpoint.h"
#include "net/base/net_export.h"
#include "net/dns/https_record_rdata.h"
#include "net/dns/public/dns_query_type.h"

namespace net {

class HostResolverInternalDataResult;
class HostResolverInternalMetadataResult;
class HostResolverInternalErrorResult;
class HostResolverInternalAliasResult;

// Parsed and extracted result type for use internally to HostResolver code.
class NET_EXPORT_PRIVATE HostResolverInternalResult { … };

// Parsed and extracted result containing result data.
class NET_EXPORT_PRIVATE HostResolverInternalDataResult final
    : public HostResolverInternalResult { … };

// Parsed and extracted connection metadata, but not usable on its own without
// being paired with separate HostResolverInternalDataResult data (for the
// domain name specified by `ConnectionEndpointMetadata::target_name`). An empty
// metadata result signifies that compatible HTTPS records were received but
// with no contained metadata of use to Chrome.
class NET_EXPORT_PRIVATE HostResolverInternalMetadataResult final
    : public HostResolverInternalResult { … };

// Parsed and extracted error.
class NET_EXPORT_PRIVATE HostResolverInternalErrorResult final
    : public HostResolverInternalResult { … };

// Parsed and extracted alias (CNAME or alias-type HTTPS).
class NET_EXPORT_PRIVATE HostResolverInternalAliasResult final
    : public HostResolverInternalResult { … };

}  // namespace net

#endif  // NET_DNS_HOST_RESOLVER_INTERNAL_RESULT_H_