chromium/net/base/network_isolation_key.h

// Copyright 2019 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_BASE_NETWORK_ISOLATION_KEY_H_
#define NET_BASE_NETWORK_ISOLATION_KEY_H_

#include <optional>
#include <string>

#include "base/types/pass_key.h"
#include "base/unguessable_token.h"
#include "net/base/net_export.h"
#include "net/base/schemeful_site.h"

namespace url {
class Origin;
}

namespace network::mojom {
class NonEmptyNetworkIsolationKeyDataView;
}

namespace net {
class CookiePartitionKey;
class NetworkAnonymizationKey;
}

namespace net {

// NetworkIsolationKey (NIK) is used to partition shared network state based on
// the context in which the requests were made. It is used to divide the HTTP
// cache, while the NetworkAnonymizationKey is used for most other network
// state.
//
// The NetworkIsolationKey uses the "triple-key" scheme to partition the HTTP
// cache. The key has the following properties:
// `top_frame_site` -> the schemeful site of the top level page.
// `frame_site ` -> the schemeful site of the frame.
class NET_EXPORT NetworkIsolationKey { … };

NET_EXPORT std::ostream& operator<<(std::ostream& os,
                                    const NetworkIsolationKey& nak);

}  // namespace net

#endif  // NET_BASE_NETWORK_ISOLATION_KEY_H_