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// Copyright (c) 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_RENDERER_HOST_PEPPER_PEPPER_NETWORK_PROXY_HOST_H_
#define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_NETWORK_PROXY_HOST_H_
#include <queue>
#include <string>
#include "base/compiler_specific.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "net/proxy/proxy_service.h"
#include "ppapi/host/host_message_context.h"
#include "ppapi/host/resource_host.h"
namespace net {
class ProxyInfo;
class URLRequestContextGetter;
}
namespace ppapi {
namespace host {
struct ReplyMessageContext;
}
}
namespace content {
class BrowserPpapiHostImpl;
// The host for PPB_NetworkProxy. This class lives on the IO thread.
class CONTENT_EXPORT PepperNetworkProxyHost : public ppapi::host::ResourceHost {
public:
PepperNetworkProxyHost(BrowserPpapiHostImpl* host,
PP_Instance instance,
PP_Resource resource);
~PepperNetworkProxyHost() override;
private:
// We retrieve the appropriate URLRequestContextGetter and whether this API
// is allowed for the instance on the UI thread and pass those to
// DidGetUIThreadData, which sets allowed_ and proxy_service_.
struct UIThreadData {
UIThreadData();
~UIThreadData();
bool is_allowed;
scoped_refptr<net::URLRequestContextGetter> context_getter;
};
static UIThreadData GetUIThreadDataOnUIThread(int render_process_id,
int render_frame_id,
bool is_external_plugin);
void DidGetUIThreadData(const UIThreadData&);
// ResourceHost implementation.
int32_t OnResourceMessageReceived(
const IPC::Message& msg,
ppapi::host::HostMessageContext* context) override;
int32_t OnMsgGetProxyForURL(ppapi::host::HostMessageContext* context,
const std::string& url);
// If we have a valid proxy_service_, send all messages in unsent_requests_.
void TryToSendUnsentRequests();
void OnResolveProxyCompleted(ppapi::host::ReplyMessageContext context,
net::ProxyInfo* proxy_info,
int result);
void SendFailureReply(int32_t error,
ppapi::host::ReplyMessageContext context);
// The following two members are invalid until we get some information from
// the UI thread. However, these are only ever set or accessed on the IO
// thread.
net::ProxyService* proxy_service_;
bool is_allowed_;
// True initially, but set to false once the values for proxy_service_ and
// is_allowed_ have been set.
bool waiting_for_ui_thread_data_;
// We have to get the URLRequestContextGetter from the UI thread before we
// can retrieve proxy_service_. If we receive any calls for GetProxyForURL
// before proxy_service_ is available, we save them in unsent_requests_.
struct UnsentRequest {
GURL url;
ppapi::host::ReplyMessageContext reply_context;
};
std::queue<UnsentRequest> unsent_requests_;
// Requests awaiting a response from ProxyService. We need to store these so
// that we can cancel them if we get destroyed.
std::queue<net::ProxyService::PacRequest*> pending_requests_;
base::WeakPtrFactory<PepperNetworkProxyHost> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(PepperNetworkProxyHost);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_NETWORK_PROXY_HOST_H_
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