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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 EXTENSIONS_BROWSER_API_SOCKETS_UDP_UDP_SOCKET_EVENT_DISPATCHER_H_
#define EXTENSIONS_BROWSER_API_SOCKETS_UDP_UDP_SOCKET_EVENT_DISPATCHER_H_
#include <stdint.h>
#include <string>
#include "base/memory/raw_ptr.h"
#include "content/public/browser/browser_thread.h"
#include "extensions/browser/api/api_resource_manager.h"
#include "extensions/browser/api/sockets_udp/sockets_udp_api.h"
#include "extensions/common/extension_id.h"
namespace content {
class BrowserContext;
}
namespace extensions {
struct Event;
class ResumableUDPSocket;
}
namespace extensions {
namespace api {
// Dispatch events related to "sockets.udp" sockets from callback on native
// socket instances. There is one instance per profile.
class UDPSocketEventDispatcher : public BrowserContextKeyedAPI {
public:
explicit UDPSocketEventDispatcher(content::BrowserContext* context);
~UDPSocketEventDispatcher() override;
// Socket is active, start receving from it.
void OnSocketBind(const ExtensionId& extension_id, int socket_id);
// Socket is active again, start receiving data from it.
void OnSocketResume(const ExtensionId& extension_id, int socket_id);
// BrowserContextKeyedAPI implementation.
static BrowserContextKeyedAPIFactory<UDPSocketEventDispatcher>*
GetFactoryInstance();
// Convenience method to get the SocketEventDispatcher for a profile.
static UDPSocketEventDispatcher* Get(content::BrowserContext* context);
private:
using SocketData = ApiResourceManager<ResumableUDPSocket>::ApiResourceData;
friend class BrowserContextKeyedAPIFactory<UDPSocketEventDispatcher>;
// BrowserContextKeyedAPI implementation.
static const char* service_name() { return "UDPSocketEventDispatcher"; }
static const bool kServiceHasOwnInstanceInIncognito = true;
static const bool kServiceIsNULLWhileTesting = true;
// base::Bind supports methods with up to 6 parameters. ReceiveParams is used
// as a workaround that limitation for invoking StartReceive.
struct ReceiveParams {
ReceiveParams();
ReceiveParams(const ReceiveParams& other);
~ReceiveParams();
content::BrowserThread::ID thread_id;
raw_ptr<void, DanglingUntriaged> browser_context_id;
ExtensionId extension_id;
scoped_refptr<SocketData> sockets;
int socket_id;
};
// Start a receive and register a callback.
static void StartReceive(const ReceiveParams& params);
// Called when socket receive data.
static void ReceiveCallback(const ReceiveParams& params,
int bytes_read,
scoped_refptr<net::IOBuffer> io_buffer,
bool socket_destroying,
const std::string& address,
uint16_t port);
// Post an extension event from IO to UI thread
static void PostEvent(const ReceiveParams& params,
std::unique_ptr<Event> event);
// Dispatch an extension event on to EventRouter instance on UI thread.
static void DispatchEvent(void* browser_context_id,
const ExtensionId& extension_id,
std::unique_ptr<Event> event);
// Usually IO thread (except for unit testing).
content::BrowserThread::ID thread_id_;
const raw_ptr<content::BrowserContext> browser_context_;
scoped_refptr<SocketData> sockets_;
};
} // namespace api
} // namespace extensions
#endif // EXTENSIONS_BROWSER_API_SOCKETS_UDP_UDP_SOCKET_EVENT_DISPATCHER_H_
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