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// Copyright 2018 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 "content/browser/loader/prefetch_url_loader.h"
#include "base/feature_list.h"
#include "content/browser/web_package/signed_exchange_utils.h"
#include "content/browser/web_package/web_package_prefetch_handler.h"
#include "content/public/common/content_features.h"
#include "net/url_request/url_request_context_getter.h"
#include "services/network/public/cpp/features.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"
namespace content {
PrefetchURLLoader::PrefetchURLLoader(
int32_t routing_id,
int32_t request_id,
uint32_t options,
base::RepeatingCallback<int(void)> frame_tree_node_id_getter,
const network::ResourceRequest& resource_request,
network::mojom::URLLoaderClientPtr client,
const net::MutableNetworkTrafficAnnotationTag& traffic_annotation,
scoped_refptr<network::SharedURLLoaderFactory> network_loader_factory,
URLLoaderThrottlesGetter url_loader_throttles_getter,
ResourceContext* resource_context,
scoped_refptr<net::URLRequestContextGetter> request_context_getter)
: frame_tree_node_id_getter_(frame_tree_node_id_getter),
url_(resource_request.url),
report_raw_headers_(resource_request.report_raw_headers),
network_loader_factory_(std::move(network_loader_factory)),
client_binding_(this),
forwarding_client_(std::move(client)),
url_loader_throttles_getter_(url_loader_throttles_getter),
resource_context_(resource_context),
request_context_getter_(std::move(request_context_getter)) {
DCHECK(network_loader_factory_);
if (resource_request.request_initiator)
request_initiator_ = *resource_request.request_initiator;
network::mojom::URLLoaderClientPtr network_client;
client_binding_.Bind(mojo::MakeRequest(&network_client));
client_binding_.set_connection_error_handler(base::BindOnce(
&PrefetchURLLoader::OnNetworkConnectionError, base::Unretained(this)));
network_loader_factory_->CreateLoaderAndStart(
mojo::MakeRequest(&loader_), routing_id, request_id, options,
resource_request, std::move(network_client), traffic_annotation);
}
PrefetchURLLoader::~PrefetchURLLoader() = default;
void PrefetchURLLoader::FollowRedirect(
const base::Optional<net::HttpRequestHeaders>& modified_request_headers) {
DCHECK(!modified_request_headers.has_value()) << "Redirect with modified "
"headers was not supported "
"yet. crbug.com/845683";
if (web_package_prefetch_handler_) {
// Rebind |client_binding_| and |loader_|.
client_binding_.Bind(web_package_prefetch_handler_->FollowRedirect(
mojo::MakeRequest(&loader_)));
return;
}
loader_->FollowRedirect(base::nullopt);
}
void PrefetchURLLoader::ProceedWithResponse() {
loader_->ProceedWithResponse();
}
void PrefetchURLLoader::SetPriority(net::RequestPriority priority,
int intra_priority_value) {
loader_->SetPriority(priority, intra_priority_value);
}
void PrefetchURLLoader::PauseReadingBodyFromNet() {
loader_->PauseReadingBodyFromNet();
}
void PrefetchURLLoader::ResumeReadingBodyFromNet() {
loader_->ResumeReadingBodyFromNet();
}
void PrefetchURLLoader::OnReceiveResponse(
const network::ResourceResponseHead& response,
network::mojom::DownloadedTempFilePtr downloaded_file) {
if (signed_exchange_utils::ShouldHandleAsSignedHTTPExchange(url_, response)) {
DCHECK(!web_package_prefetch_handler_);
// Note that after this point this doesn't directly get upcalls from the
// network. (Until |this| calls the handler's FollowRedirect.)
web_package_prefetch_handler_ = std::make_unique<WebPackagePrefetchHandler>(
frame_tree_node_id_getter_, report_raw_headers_, response,
std::move(loader_), client_binding_.Unbind(), network_loader_factory_,
request_initiator_, url_, url_loader_throttles_getter_,
resource_context_, request_context_getter_, this);
return;
}
forwarding_client_->OnReceiveResponse(response, std::move(downloaded_file));
}
void PrefetchURLLoader::OnReceiveRedirect(
const net::RedirectInfo& redirect_info,
const network::ResourceResponseHead& head) {
forwarding_client_->OnReceiveRedirect(redirect_info, head);
}
void PrefetchURLLoader::OnDataDownloaded(int64_t data_length,
int64_t encoded_length) {
forwarding_client_->OnDataDownloaded(data_length, encoded_length);
}
void PrefetchURLLoader::OnUploadProgress(int64_t current_position,
int64_t total_size,
base::OnceCallback<void()> callback) {
forwarding_client_->OnUploadProgress(current_position, total_size,
std::move(callback));
}
void PrefetchURLLoader::OnReceiveCachedMetadata(
const std::vector<uint8_t>& data) {
// Just drop this; we don't need to forward this to the renderer
// for prefetch.
}
void PrefetchURLLoader::OnTransferSizeUpdated(int32_t transfer_size_diff) {
forwarding_client_->OnTransferSizeUpdated(transfer_size_diff);
}
void PrefetchURLLoader::OnStartLoadingResponseBody(
mojo::ScopedDataPipeConsumerHandle body) {
// Just drain this here; we don't need to forward the body data to
// the renderer for prefetch.
DCHECK(!pipe_drainer_);
pipe_drainer_ =
std::make_unique<mojo::DataPipeDrainer>(this, std::move(body));
}
void PrefetchURLLoader::OnComplete(
const network::URLLoaderCompletionStatus& status) {
forwarding_client_->OnComplete(status);
}
void PrefetchURLLoader::OnNetworkConnectionError() {
// The network loader has an error; we should let the client know it's closed
// by dropping this, which will in turn make this loader destroyed.
forwarding_client_.reset();
}
} // namespace content
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