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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_LOADER_NAVIGATION_URL_LOADER_DELEGATE_H_
#define CONTENT_BROWSER_LOADER_NAVIGATION_URL_LOADER_DELEGATE_H_
#include <memory>
#include <optional>
#include "content/common/content_export.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "services/network/public/mojom/early_hints.mojom-forward.h"
#include "services/network/public/mojom/url_loader.mojom.h"
#include "services/network/public/mojom/url_loader_factory.mojom.h"
#include "services/network/public/mojom/url_response_head.mojom.h"
#include "third_party/blink/public/common/navigation/navigation_policy.h"
#include "url/origin.h"
namespace net {
class NetworkAnonymizationKey;
struct RedirectInfo;
}
namespace network {
struct URLLoaderCompletionStatus;
}
namespace content {
class NavigationEarlyHintsManager;
struct NavigationEarlyHintsManagerParams;
struct GlobalRequestID;
struct SubresourceLoaderParams;
// The delegate interface to NavigationURLLoader.
class CONTENT_EXPORT NavigationURLLoaderDelegate {
public:
// Conveys information related to Early Hints responses.
struct CONTENT_EXPORT EarlyHints {
EarlyHints();
~EarlyHints();
EarlyHints(EarlyHints&& other);
EarlyHints& operator=(EarlyHints&& other);
EarlyHints(const EarlyHints& other) = delete;
EarlyHints& operator=(const EarlyHints& other) = delete;
// True when at least one preload or preconnect Link header was received
// during a main frame navigation.
bool was_resource_hints_received = false;
// Non-null when at least one preload is actually requested.
std::unique_ptr<NavigationEarlyHintsManager> manager;
};
NavigationURLLoaderDelegate(const NavigationURLLoaderDelegate&) = delete;
NavigationURLLoaderDelegate& operator=(const NavigationURLLoaderDelegate&) =
delete;
// Called when the request is redirected. Call FollowRedirect to continue
// processing the request.
//
// |network_anonymization_key| is the NetworkAnonymizationKey associated with
// the request that was redirected, not the one that will be used if the
// redirect is followed.
virtual void OnRequestRedirected(
const net::RedirectInfo& redirect_info,
const net::NetworkAnonymizationKey& network_anonymization_key,
network::mojom::URLResponseHeadPtr response) = 0;
// Called when the request receives its response. No further calls will be
// made to the delegate. The response body can be retrieved by implementing an
// URLLoaderClient and binding the |url_loader_client_endpoints|.
// |navigation_data| is passed to the NavigationHandle.
// |subresource_loader_params| is used in the network service only for passing
// necessary info to create a custom subresource loader in the renderer
// process if the navigated context is controlled by a request interceptor.
//
// |is_download| is true if the request must be downloaded, if it isn't
// disallowed.
//
// Invoking this method will delete the URLLoader, so it needs to take all
// arguments by value.
virtual void OnResponseStarted(
network::mojom::URLLoaderClientEndpointsPtr url_loader_client_endpoints,
network::mojom::URLResponseHeadPtr response_head,
mojo::ScopedDataPipeConsumerHandle response_body,
GlobalRequestID request_id,
bool is_download,
net::NetworkAnonymizationKey network_anonymization_key,
SubresourceLoaderParams subresource_loader_params,
EarlyHints early_hints) = 0;
// Called if the request fails before receving a response. Specific
// fields which are used: |status.error_code| holds the error code
// for the failure; |status.extended_error_code| holds details if
// available; |status.exists_in_cache| indicates a stale cache
// entry; |status.ssl_info| is available when |status.error_code| is
// a certificate error.
virtual void OnRequestFailed(
const network::URLLoaderCompletionStatus& status) = 0;
// Creates parameters to construct NavigationEarlyHintsManager. Returns
// std::nullopt when this delegate cannot create parameters.
virtual std::optional<NavigationEarlyHintsManagerParams>
CreateNavigationEarlyHintsManagerParams(
const network::mojom::EarlyHints& early_hints) = 0;
protected:
NavigationURLLoaderDelegate() {}
virtual ~NavigationURLLoaderDelegate() {}
};
} // namespace content
#endif // CONTENT_BROWSER_LOADER_NAVIGATION_URL_LOADER_DELEGATE_H_
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