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// Copyright 2014 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 CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_TRANSACTION_H_
#define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_TRANSACTION_H_
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "net/base/completion_callback.h"
#include "net/base/load_states.h"
#include "net/base/request_priority.h"
#include "net/http/http_transaction.h"
#include "net/websockets/websocket_handshake_stream_base.h"
class DevToolsNetworkController;
class DevToolsNetworkInterceptor;
class GURL;
namespace net {
class AuthCredentials;
class BoundNetLog;
class HttpRequestHeaders;
struct HttpRequestInfo;
class HttpResponseInfo;
class HttpNetworkSession;
class IOBuffer;
struct LoadTimingInfo;
class UploadProgress;
class X509Certificate;
} // namespace net
namespace test {
class DevToolsNetworkControllerHelper;
}
// DevToolsNetworkTransaction is a wrapper for network transaction. All
// HttpTransaction methods are proxied to real transaction, but |callback|
// parameter is saved and replaced with proxy callback. Fail method should be
// used to simulate network outage. It runs saved callback (if any) with
// net::ERR_INTERNET_DISCONNECTED result value.
class DevToolsNetworkTransaction : public net::HttpTransaction {
public:
static const char kDevToolsRequestInitiator[];
static const char kDevToolsEmulateNetworkConditionsClientId[];
DevToolsNetworkTransaction(
DevToolsNetworkController* controller,
scoped_ptr<net::HttpTransaction> network_transaction);
~DevToolsNetworkTransaction() override;
const net::HttpRequestInfo* request() const { return request_; }
// Checks if request contains DevTools specific headers. Found values are
// remembered and corresponding keys are removed from headers.
void ProcessRequest();
bool failed() const { return failed_; }
// Runs callback (if any) with net::ERR_INTERNET_DISCONNECTED result value.
void Fail();
int64_t throttled_byte_count() const { return throttled_byte_count_; }
void DecreaseThrottledByteCount(int64_t delta) {
throttled_byte_count_ -= delta;
}
const std::string& request_initiator() const { return request_initiator_; }
const std::string& client_id() const {
return client_id_;
}
void FireThrottledCallback();
// HttpTransaction methods:
int Start(const net::HttpRequestInfo* request,
const net::CompletionCallback& callback,
const net::BoundNetLog& net_log) override;
int RestartIgnoringLastError(
const net::CompletionCallback& callback) override;
int RestartWithCertificate(net::X509Certificate* client_cert,
const net::CompletionCallback& callback) override;
int RestartWithAuth(const net::AuthCredentials& credentials,
const net::CompletionCallback& callback) override;
bool IsReadyToRestartForAuth() override;
int Read(net::IOBuffer* buf,
int buf_len,
const net::CompletionCallback& callback) override;
void StopCaching() override;
bool GetFullRequestHeaders(net::HttpRequestHeaders* headers) const override;
int64 GetTotalReceivedBytes() const override;
void DoneReading() override;
const net::HttpResponseInfo* GetResponseInfo() const override;
net::LoadState GetLoadState() const override;
net::UploadProgress GetUploadProgress() const override;
void SetQuicServerInfo(net::QuicServerInfo* quic_server_info) override;
bool GetLoadTimingInfo(net::LoadTimingInfo* load_timing_info) const override;
void SetPriority(net::RequestPriority priority) override;
void SetWebSocketHandshakeStreamCreateHelper(
net::WebSocketHandshakeStreamBase::CreateHelper* create_helper) override;
void SetBeforeNetworkStartCallback(
const BeforeNetworkStartCallback& callback) override;
void SetBeforeProxyHeadersSentCallback(
const BeforeProxyHeadersSentCallback& callback) override;
int ResumeNetworkStart() override;
protected:
friend class test::DevToolsNetworkControllerHelper;
private:
// Proxy callback handler. Runs saved callback.
void OnCallback(int result);
DevToolsNetworkController* controller_;
base::WeakPtr<DevToolsNetworkInterceptor> interceptor_;
// Modified request. Should be destructed after |network_transaction_|
scoped_ptr<net::HttpRequestInfo> custom_request_;
// Real network transaction.
scoped_ptr<net::HttpTransaction> network_transaction_;
const net::HttpRequestInfo* request_;
// True if Start was already invoked.
bool started_;
// True if Fail was already invoked.
bool failed_;
// Value of "X-DevTools-Request-Initiator" request header.
std::string request_initiator_;
// Value of "X-DevTools-Emulate-Network-Conditions-Client-Id" request header.
std::string client_id_;
enum CallbackType {
NONE,
READ,
RESTART_IGNORING_LAST_ERROR,
RESTART_WITH_AUTH,
RESTART_WITH_CERTIFICATE,
START
};
int SetupCallback(
net::CompletionCallback callback,
int result,
CallbackType callback_type);
void Throttle(int result);
int throttled_result_;
int64_t throttled_byte_count_;
CallbackType callback_type_;
net::CompletionCallback proxy_callback_;
net::CompletionCallback callback_;
DISALLOW_COPY_AND_ASSIGN(DevToolsNetworkTransaction);
};
#endif // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_NETWORK_TRANSACTION_H_
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