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// Copyright 2013 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 CONTENT_BROWSER_WEBSOCKETS_WEBSOCKET_MANAGER_H_
#define CONTENT_BROWSER_WEBSOCKETS_WEBSOCKET_MANAGER_H_
#include <set>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/timer/timer.h"
#include "content/browser/websockets/websocket_impl.h"
#include "content/common/content_export.h"
#include "net/url_request/url_request_context_getter.h"
#include "net/url_request/url_request_context_getter_observer.h"
namespace service_manager {
struct BindSourceInfo;
}
namespace content {
class StoragePartition;
// The WebSocketManager is a per child process instance that manages the
// lifecycle of WebSocketImpl objects. It is responsible for creating
// WebSocketImpl objects for each WebSocketRequest and throttling the number of
// WebSocketImpl objects in use.
class CONTENT_EXPORT WebSocketManager
: NON_EXPORTED_BASE(public WebSocketImpl::Delegate),
NON_EXPORTED_BASE(public net::URLRequestContextGetterObserver) {
public:
// Called on the UI thread:
static void CreateWebSocket(
int process_id,
int frame_id,
const service_manager::BindSourceInfo& source_info,
blink::mojom::WebSocketRequest request);
// net::URLRequestContextGetterObserver implementation.
void OnContextShuttingDown() override;
protected:
class Handle;
friend class base::DeleteHelper<WebSocketManager>;
// Called on the UI thread:
WebSocketManager(int process_id, StoragePartition* storage_partition);
// All other methods must run on the IO thread.
~WebSocketManager() override;
void DoCreateWebSocket(int frame_id, blink::mojom::WebSocketRequest request);
base::TimeDelta CalculateDelay() const;
void ThrottlingPeriodTimerCallback();
// This is virtual to support testing.
virtual WebSocketImpl* CreateWebSocketImpl(
WebSocketImpl::Delegate* delegate,
blink::mojom::WebSocketRequest request,
int child_id,
int frame_id,
base::TimeDelta delay);
// WebSocketImpl::Delegate methods:
int GetClientProcessId() override;
StoragePartition* GetStoragePartition() override;
void OnReceivedResponseFromServer(WebSocketImpl* impl) override;
void OnLostConnectionToClient(WebSocketImpl* impl) override;
void ObserveURLRequestContextGetter();
int process_id_;
StoragePartition* storage_partition_;
scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
std::set<WebSocketImpl*> impls_;
// Timer and counters for per-renderer WebSocket throttling.
base::RepeatingTimer throttling_period_timer_;
// The current number of pending connections.
int num_pending_connections_;
// The number of handshakes that failed in the current and previous time
// period.
int64_t num_current_succeeded_connections_;
int64_t num_previous_succeeded_connections_;
// The number of handshakes that succeeded in the current and previous time
// period.
int64_t num_current_failed_connections_;
int64_t num_previous_failed_connections_;
bool context_destroyed_;
DISALLOW_COPY_AND_ASSIGN(WebSocketManager);
};
} // namespace content
#endif // CONTENT_BROWSER_WEBSOCKETS_WEBSOCKET_MANAGER_H_
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