net/quic/quic_http_stream.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef NET_QUIC_QUIC_HTTP_STREAM_H_
   6 #define NET_QUIC_QUIC_HTTP_STREAM_H_
   7
   8 #include <list>
   9
  10 #include "base/memory/weak_ptr.h"
  11 #include "net/base/io_buffer.h"
  12 #include "net/http/http_stream.h"
  13 #include "net/quic/quic_client_session.h"
  14 #include "net/quic/quic_reliable_client_stream.h"
  15
  16 namespace net {
  17
  18 namespace test {
  19 class QuicHttpStreamPeer;
  20 }  // namespace test
  21
  22 // The QuicHttpStream is a QUIC-specific HttpStream subclass.  It holds a
  23 // non-owning pointer to a QuicReliableClientStream which it uses to
  24 // send and receive data.
  25 class NET_EXPORT_PRIVATE QuicHttpStream :
  26       public QuicClientSession::Observer,
  27       public QuicReliableClientStream::Delegate,
  28       public HttpStream {
  29  public:
  30   explicit QuicHttpStream(const base::WeakPtr<QuicClientSession>& session);
  31
  32   ~QuicHttpStream() override;
  33
  34   // HttpStream implementation.
  35   int InitializeStream(const HttpRequestInfo* request_info,
  36                        RequestPriority priority,
  37                        const BoundNetLog& net_log,
  38                        const CompletionCallback& callback) override;
  39   int SendRequest(const HttpRequestHeaders& request_headers,
  40                   HttpResponseInfo* response,
  41                   const CompletionCallback& callback) override;
  42   UploadProgress GetUploadProgress() const override;
  43   int ReadResponseHeaders(const CompletionCallback& callback) override;
  44   int ReadResponseBody(IOBuffer* buf,
  45                        int buf_len,
  46                        const CompletionCallback& callback) override;
  47   void Close(bool not_reusable) override;
  48   HttpStream* RenewStreamForAuth() override;
  49   bool IsResponseBodyComplete() const override;
  50   bool CanFindEndOfResponse() const override;
  51   bool IsConnectionReused() const override;
  52   void SetConnectionReused() override;
  53   bool IsConnectionReusable() const override;
  54   int64 GetTotalReceivedBytes() const override;
  55   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const override;
  56   void GetSSLInfo(SSLInfo* ssl_info) override;
  57   void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) override;
  58   bool IsSpdyHttpStream() const override;
  59   void Drain(HttpNetworkSession* session) override;
  60   void SetPriority(RequestPriority priority) override;
  61
  62   // QuicReliableClientStream::Delegate implementation
  63   int OnDataReceived(const char* data, int length) override;
  64   void OnClose(QuicErrorCode error) override;
  65   void OnError(int error) override;
  66   bool HasSendHeadersComplete() override;
  67
  68   // QuicClientSession::Observer implementation
  69   void OnCryptoHandshakeConfirmed() override;
  70   void OnSessionClosed(int error) override;
  71
  72  private:
  73   friend class test::QuicHttpStreamPeer;
  74
  75   enum State {
  76     STATE_NONE,
  77     STATE_SEND_HEADERS,
  78     STATE_SEND_HEADERS_COMPLETE,
  79     STATE_READ_REQUEST_BODY,
  80     STATE_READ_REQUEST_BODY_COMPLETE,
  81     STATE_SEND_BODY,
  82     STATE_SEND_BODY_COMPLETE,
  83     STATE_OPEN,
  84   };
  85
  86   void OnStreamReady(int rv);
  87   void OnIOComplete(int rv);
  88   void DoCallback(int rv);
  89
  90   int DoLoop(int);
  91   int DoSendHeaders();
  92   int DoSendHeadersComplete(int rv);
  93   int DoReadRequestBody();
  94   int DoReadRequestBodyComplete(int rv);
  95   int DoSendBody();
  96   int DoSendBodyComplete(int rv);
  97   int DoReadResponseHeaders();
  98   int DoReadResponseHeadersComplete(int rv);
  99
 100   int ParseResponseHeaders();
 101
 102   void BufferResponseBody(const char* data, int length);
 103
 104   State next_state_;
 105
 106   base::WeakPtr<QuicClientSession> session_;
 107   int session_error_;  // Error code from the connection shutdown.
 108   bool was_handshake_confirmed_;  // True if the crypto handshake succeeded.
 109   QuicClientSession::StreamRequest stream_request_;
 110   QuicReliableClientStream* stream_;  // Non-owning.
 111
 112   // The following three fields are all owned by the caller and must
 113   // outlive this object, according to the HttpStream contract.
 114
 115   // The request to send.
 116   const HttpRequestInfo* request_info_;
 117   // The request body to send, if any, owned by the caller.
 118   UploadDataStream* request_body_stream_;
 119   // Time the request was issued.
 120   base::Time request_time_;
 121   // The priority of the request.
 122   RequestPriority priority_;
 123   // |response_info_| is the HTTP response data object which is filled in
 124   // when a the response headers are read.  It is not owned by this stream.
 125   HttpResponseInfo* response_info_;
 126   // Because response data is buffered, also buffer the response status if the
 127   // stream is explicitly closed via OnError or OnClose with an error.
 128   // Once all buffered data has been returned, this will be used as the final
 129   // response.
 130   int response_status_;
 131
 132   // Serialized request headers.
 133   SpdyHeaderBlock request_headers_;
 134
 135   bool response_headers_received_;
 136
 137   // Serialized HTTP request.
 138   std::string request_;
 139
 140   // Buffer into which response header data is read.
 141   scoped_refptr<GrowableIOBuffer> read_buf_;
 142
 143   // We buffer the response body as it arrives asynchronously from the stream.
 144   // TODO(rch): This is infinite buffering, which is bad.
 145   std::list<scoped_refptr<IOBufferWithSize> > response_body_;
 146
 147   // Number of bytes received when the stream was closed.
 148   int64 closed_stream_received_bytes_;
 149
 150   // The caller's callback to be used for asynchronous operations.
 151   CompletionCallback callback_;
 152
 153   // Caller provided buffer for the ReadResponseBody() response.
 154   scoped_refptr<IOBuffer> user_buffer_;
 155   int user_buffer_len_;
 156
 157   // Temporary buffer used to read the request body from UploadDataStream.
 158   scoped_refptr<IOBufferWithSize> raw_request_body_buf_;
 159   // Wraps raw_request_body_buf_ to read the remaining data progressively.
 160   scoped_refptr<DrainableIOBuffer> request_body_buf_;
 161
 162   BoundNetLog stream_net_log_;
 163
 164   base::WeakPtrFactory<QuicHttpStream> weak_factory_;
 165
 166   DISALLOW_COPY_AND_ASSIGN(QuicHttpStream);
 167 };
 168
 169 }  // namespace net
 170
 171 #endif  // NET_QUIC_QUIC_HTTP_STREAM_H_