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// Copyright 2017 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.
#ifndef SERVICES_NETWORK_URL_LOADER_FACTORY_H_
#define SERVICES_NETWORK_URL_LOADER_FACTORY_H_
#include <memory>
#include <set>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "services/network/public/mojom/network_context.mojom.h"
#include "services/network/public/mojom/url_loader_factory.mojom.h"
namespace network {
class NetworkContext;
class ResourceSchedulerClient;
class URLLoader;
namespace cors {
class CorsURLLoaderFactory;
} // namespace cors
// This class is an implementation of mojom::URLLoaderFactory that
// creates a mojom::URLLoader.
// A URLLoaderFactory has a pointer to ResourceSchedulerClient. A
// ResourceSchedulerClient is associated with cloned
// NetworkServiceURLLoaderFactories. Roughly one URLLoaderFactory
// is created for one frame in render process, so it means ResourceScheduler
// works on each frame.
// A URLLoaderFactory can be created with null ResourceSchedulerClient, in which
// case requests constructed by the factory will not be throttled.
// The CORS related part is implemented in CorsURLLoader[Factory] until
// kOutOfBlinkCors and kNetworkService is fully enabled. Note that
// NetworkContext::CreateURLLoaderFactory returns a CorsURLLoaderFactory,
// instead of a URLLoaderFactory.
class URLLoaderFactory : public mojom::URLLoaderFactory {
public:
// NOTE: |context| must outlive this instance.
URLLoaderFactory(
NetworkContext* context,
mojom::URLLoaderFactoryParamsPtr params,
scoped_refptr<ResourceSchedulerClient> resource_scheduler_client,
cors::CorsURLLoaderFactory* cors_url_loader_factory);
~URLLoaderFactory() override;
// mojom::URLLoaderFactory implementation.
void CreateLoaderAndStart(mojom::URLLoaderRequest request,
int32_t routing_id,
int32_t request_id,
uint32_t options,
const ResourceRequest& url_request,
mojom::URLLoaderClientPtr client,
const net::MutableNetworkTrafficAnnotationTag&
traffic_annotation) override;
void Clone(mojo::PendingReceiver<mojom::URLLoaderFactory> receiver) override;
static constexpr int kMaxKeepaliveConnections = 256;
static constexpr int kMaxKeepaliveConnectionsPerProcess = 20;
static constexpr int kMaxKeepaliveConnectionsPerProcessForFetchAPI = 10;
private:
// The NetworkContext that indirectly owns |this|.
NetworkContext* const context_;
mojom::URLLoaderFactoryParamsPtr params_;
scoped_refptr<ResourceSchedulerClient> resource_scheduler_client_;
mojo::Remote<mojom::TrustedURLLoaderHeaderClient> header_client_;
// |cors_url_loader_factory_| owns this.
cors::CorsURLLoaderFactory* cors_url_loader_factory_;
DISALLOW_COPY_AND_ASSIGN(URLLoaderFactory);
};
} // namespace network
#endif // SERVICES_NETWORK_URL_LOADER_FACTORY_H_