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// Copyright (c) 2009 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 NET_SPDY_NETWORK_TRANSACTION_H_
#define NET_SPDY_NETWORK_TRANSACTION_H_
#include <string>
#include <deque>
#include "base/basictypes.h"
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "base/time.h"
#include "net/base/completion_callback.h"
#include "net/base/load_states.h"
#include "net/base/net_log.h"
#include "net/http/http_response_info.h"
#include "net/http/http_transaction.h"
#include "net/spdy/spdy_session.h"
namespace net {
class SpdySession;
class SpdyHttpStream;
class HttpNetworkSession;
class HttpResponseInfo;
class IOBuffer;
class UploadDataStream;
// A SpdyNetworkTransaction can be used to fetch HTTP conent.
// The SpdyDelegate is the consumer of events from the SpdySession.
class SpdyNetworkTransaction : public HttpTransaction {
public:
explicit SpdyNetworkTransaction(HttpNetworkSession* session);
virtual ~SpdyNetworkTransaction();
// HttpTransaction methods:
virtual int Start(const HttpRequestInfo* request_info,
CompletionCallback* callback,
const BoundNetLog& net_log);
virtual int RestartIgnoringLastError(CompletionCallback* callback);
virtual int RestartWithCertificate(X509Certificate* client_cert,
CompletionCallback* callback);
virtual int RestartWithAuth(const std::wstring& username,
const std::wstring& password,
CompletionCallback* callback);
virtual bool IsReadyToRestartForAuth() { return false; }
virtual int Read(IOBuffer* buf, int buf_len, CompletionCallback* callback);
virtual void StopCaching() {}
virtual const HttpResponseInfo* GetResponseInfo() const;
virtual LoadState GetLoadState() const;
virtual uint64 GetUploadProgress() const;
private:
FRIEND_TEST(SpdyNetworkTransactionTest, WindowUpdate);
FRIEND_TEST(SpdyNetworkTransactionTest, WindowUpdateOverflow);
enum State {
STATE_INIT_CONNECTION,
STATE_INIT_CONNECTION_COMPLETE,
STATE_GET_STREAM,
STATE_GET_STREAM_COMPLETE,
STATE_SEND_REQUEST,
STATE_SEND_REQUEST_COMPLETE,
STATE_READ_HEADERS,
STATE_READ_HEADERS_COMPLETE,
STATE_READ_BODY,
STATE_READ_BODY_COMPLETE,
STATE_NONE
};
void DoCallback(int result);
void OnIOComplete(int result);
// Runs the state transition loop.
int DoLoop(int result);
// Each of these methods corresponds to a State value. Those with an input
// argument receive the result from the previous state. If a method returns
// ERR_IO_PENDING, then the result from OnIOComplete will be passed to the
// next state method as the result arg.
int DoInitConnection();
int DoInitConnectionComplete(int result);
int DoGetStream();
int DoGetStreamComplete(int result);
int DoSendRequest();
int DoSendRequestComplete(int result);
int DoReadHeaders();
int DoReadHeadersComplete(int result);
int DoReadBody();
int DoReadBodyComplete(int result);
BoundNetLog net_log_;
scoped_refptr<SpdySession> spdy_;
CompletionCallbackImpl<SpdyNetworkTransaction> io_callback_;
CompletionCallback* user_callback_;
// Used to pass onto the SpdyStream
scoped_refptr<IOBuffer> user_buffer_;
int user_buffer_len_;
scoped_refptr<HttpNetworkSession> session_;
const HttpRequestInfo* request_;
HttpResponseInfo response_;
// The time the Start method was called.
base::TimeTicks start_time_;
// The next state in the state machine.
State next_state_;
scoped_ptr<SpdyHttpStream> stream_;
DISALLOW_COPY_AND_ASSIGN(SpdyNetworkTransaction);
};
} // namespace net
#endif // NET_SPDY_NETWORK_TRANSACTION_H_
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