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// Copyright 2016 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_QUIC_CHROMIUM_BIDIRECTIONAL_STREAM_QUIC_IMPL_H_
#define NET_QUIC_CHROMIUM_BIDIRECTIONAL_STREAM_QUIC_IMPL_H_
#include <stdint.h>
#include <memory>
#include <vector>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "net/base/load_timing_info.h"
#include "net/base/net_export.h"
#include "net/http/bidirectional_stream_impl.h"
#include "net/quic/chromium/quic_chromium_client_session.h"
#include "net/quic/chromium/quic_chromium_client_stream.h"
#include "net/spdy/core/spdy_header_block.h"
namespace base {
class Timer;
} // namespace base
namespace net {
struct BidirectionalStreamRequestInfo;
class IOBuffer;
class NET_EXPORT_PRIVATE BidirectionalStreamQuicImpl
: public BidirectionalStreamImpl {
public:
explicit BidirectionalStreamQuicImpl(
std::unique_ptr<QuicChromiumClientSession::Handle> session);
~BidirectionalStreamQuicImpl() override;
// BidirectionalStreamImpl implementation:
void Start(const BidirectionalStreamRequestInfo* request_info,
const NetLogWithSource& net_log,
bool send_request_headers_automatically,
BidirectionalStreamImpl::Delegate* delegate,
std::unique_ptr<base::Timer> timer,
const NetworkTrafficAnnotationTag& traffic_annotation) override;
void SendRequestHeaders() override;
int ReadData(IOBuffer* buffer, int buffer_len) override;
void SendvData(const std::vector<scoped_refptr<IOBuffer>>& buffers,
const std::vector<int>& lengths,
bool end_stream) override;
NextProto GetProtocol() const override;
int64_t GetTotalReceivedBytes() const override;
int64_t GetTotalSentBytes() const override;
bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const override;
void PopulateNetErrorDetails(NetErrorDetails* details) override;
private:
int WriteHeaders();
void OnStreamReady(int rv);
void OnSendDataComplete(int rv);
void ReadInitialHeaders();
void OnReadInitialHeadersComplete(int rv);
void ReadTrailingHeaders();
void OnReadTrailingHeadersComplete(int rv);
void OnReadDataComplete(int rv);
// Notifies the delegate of an error, clears |stream_| and |delegate_|,
// and cancels any pending callbacks.
void NotifyError(int error);
// Notifies the delegate of an error, clears |stream_| and |delegate_|,
// and cancels any pending callbacks. If |notify_delegate_later| is true
// then the delegate will be notified asynchronously via a posted task,
// otherwise the notification will be synchronous.
void NotifyErrorImpl(int error, bool notify_delegate_later);
// Notifies the delegate that the stream is ready.
void NotifyStreamReady();
// Resets the stream and ensures that |delegate_| won't be called back.
void ResetStream();
// Invokes OnFailure(error) on |delegate|.
void NotifyFailure(BidirectionalStreamImpl::Delegate* delegate, int error);
const std::unique_ptr<QuicChromiumClientSession::Handle> session_;
std::unique_ptr<QuicChromiumClientStream::Handle> stream_;
const BidirectionalStreamRequestInfo* request_info_;
BidirectionalStreamImpl::Delegate* delegate_;
// Saves the response status if the stream is explicitly closed via OnError
// or OnClose with an error. Once all buffered data has been returned, this
// will be used as the final response.
int response_status_;
// The protocol that is negotiated.
NextProto negotiated_protocol_;
// Connect timing information for this stream. Populated when headers are
// received.
LoadTimingInfo::ConnectTiming connect_timing_;
SpdyHeaderBlock initial_headers_;
SpdyHeaderBlock trailing_headers_;
// User provided read buffer for ReadData() response.
scoped_refptr<IOBuffer> read_buffer_;
int read_buffer_len_;
// Number of bytes received by the headers stream on behalf of this stream.
int64_t headers_bytes_received_;
// Number of bytes sent by the headers stream on behalf of this stream.
int64_t headers_bytes_sent_;
// After |stream_| has been closed, this keeps track of the total number of
// bytes received over the network for |stream_| while it was open.
int64_t closed_stream_received_bytes_;
// After |stream_| has been closed, this keeps track of the total number of
// bytes sent over the network for |stream_| while it was open.
int64_t closed_stream_sent_bytes_;
// True if the stream is the first stream negotiated on the session. Set when
// the stream was closed. If |stream_| is failed to be created, this takes on
// the default value of false.
bool closed_is_first_stream_;
// Indicates whether initial headers have been sent.
bool has_sent_headers_;
// Whether to automatically send request headers when stream is negotiated.
// If false, headers will not be sent until SendRequestHeaders() is called or
// until next SendData/SendvData, during which QUIC will try to combine header
// frame with data frame in the same packet if possible.
bool send_request_headers_automatically_;
// True when callbacks to the delegate may be invoked synchronously.
bool may_invoke_callbacks_;
base::WeakPtrFactory<BidirectionalStreamQuicImpl> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(BidirectionalStreamQuicImpl);
};
} // namespace net
#endif // NET_QUIC_CHROMIUM_BIDIRECTIONAL_STREAM_QUIC_IMPL_H_
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