net/websockets/websocket_basic_handshake_stream.h

   1 // Copyright 2013 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_WEBSOCKETS_WEBSOCKET_BASIC_HANDSHAKE_STREAM_H_
   6 #define NET_WEBSOCKETS_WEBSOCKET_BASIC_HANDSHAKE_STREAM_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "net/base/net_export.h"
  14 #include "net/http/http_basic_state.h"
  15 #include "net/websockets/websocket_handshake_stream_base.h"
  16 #include "url/gurl.h"
  17
  18 namespace net {
  19
  20 class ClientSocketHandle;
  21 class HttpResponseHeaders;
  22 class HttpResponseInfo;
  23 class HttpStreamParser;
  24
  25 struct WebSocketExtensionParams;
  26
  27 class NET_EXPORT_PRIVATE WebSocketBasicHandshakeStream
  28     : public WebSocketHandshakeStreamBase {
  29  public:
  30   // |connect_delegate| and |failure_message| must out-live this object.
  31   WebSocketBasicHandshakeStream(
  32       scoped_ptr<ClientSocketHandle> connection,
  33       WebSocketStream::ConnectDelegate* connect_delegate,
  34       bool using_proxy,
  35       std::vector<std::string> requested_sub_protocols,
  36       std::vector<std::string> requested_extensions,
  37       std::string* failure_message);
  38
  39   ~WebSocketBasicHandshakeStream() override;
  40
  41   // HttpStreamBase methods
  42   int InitializeStream(const HttpRequestInfo* request_info,
  43                        RequestPriority priority,
  44                        const BoundNetLog& net_log,
  45                        const CompletionCallback& callback) override;
  46   int SendRequest(const HttpRequestHeaders& request_headers,
  47                   HttpResponseInfo* response,
  48                   const CompletionCallback& callback) override;
  49   int ReadResponseHeaders(const CompletionCallback& callback) override;
  50   int ReadResponseBody(IOBuffer* buf,
  51                        int buf_len,
  52                        const CompletionCallback& callback) override;
  53   void Close(bool not_reusable) override;
  54   bool IsResponseBodyComplete() const override;
  55   bool CanFindEndOfResponse() const override;
  56   bool IsConnectionReused() const override;
  57   void SetConnectionReused() override;
  58   bool IsConnectionReusable() const override;
  59   int64 GetTotalReceivedBytes() const override;
  60   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const override;
  61   void GetSSLInfo(SSLInfo* ssl_info) override;
  62   void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) override;
  63   bool IsSpdyHttpStream() const override;
  64   void Drain(HttpNetworkSession* session) override;
  65   void SetPriority(RequestPriority priority) override;
  66   UploadProgress GetUploadProgress() const override;
  67   HttpStream* RenewStreamForAuth() override;
  68
  69
  70   // This is called from the top level once correct handshake response headers
  71   // have been received. It creates an appropriate subclass of WebSocketStream
  72   // depending on what extensions were negotiated. This object is unusable after
  73   // Upgrade() has been called and should be disposed of as soon as possible.
  74   scoped_ptr<WebSocketStream> Upgrade() override;
  75
  76   // Set the value used for the next Sec-WebSocket-Key header
  77   // deterministically. The key is only used once, and then discarded.
  78   // For tests only.
  79   void SetWebSocketKeyForTesting(const std::string& key);
  80
  81  private:
  82   // A wrapper for the ReadResponseHeaders callback that checks whether or not
  83   // the connection has been accepted.
  84   void ReadResponseHeadersCallback(const CompletionCallback& callback,
  85                                    int result);
  86
  87   void OnFinishOpeningHandshake();
  88
  89   // Validates the response and sends the finished handshake event.
  90   int ValidateResponse(int rv, bool* is_redirect);
  91
  92   // Check that the headers are well-formed for a 101 response, and returns
  93   // OK if they are, otherwise returns ERR_INVALID_RESPONSE.
  94   int ValidateUpgradeResponse(const HttpResponseHeaders* headers);
  95
  96   HttpStreamParser* parser() const { return state_.parser(); }
  97
  98   void set_failure_message(const std::string& failure_message);
  99
 100   // The request URL.
 101   GURL url_;
 102
 103   // HttpBasicState holds most of the handshake-related state.
 104   HttpBasicState state_;
 105
 106   // Owned by another object.
 107   // |connect_delegate| will live during the lifetime of this object.
 108   WebSocketStream::ConnectDelegate* connect_delegate_;
 109
 110   // This is stored in SendRequest() for use by ReadResponseHeaders().
 111   HttpResponseInfo* http_response_info_;
 112
 113   // The key to be sent in the next Sec-WebSocket-Key header. Usually NULL (the
 114   // key is generated on the fly).
 115   scoped_ptr<std::string> handshake_challenge_for_testing_;
 116
 117   // The required value for the Sec-WebSocket-Accept header.
 118   std::string handshake_challenge_response_;
 119
 120   // The sub-protocols we requested.
 121   std::vector<std::string> requested_sub_protocols_;
 122
 123   // The extensions we requested.
 124   std::vector<std::string> requested_extensions_;
 125
 126   // The sub-protocol selected by the server.
 127   std::string sub_protocol_;
 128
 129   // The extension(s) selected by the server.
 130   std::string extensions_;
 131
 132   // The extension parameters. The class is defined in the implementation file
 133   // to avoid including extension-related header files here.
 134   scoped_ptr<WebSocketExtensionParams> extension_params_;
 135
 136   std::string* failure_message_;
 137
 138   DISALLOW_COPY_AND_ASSIGN(WebSocketBasicHandshakeStream);
 139 };
 140
 141 }  // namespace net
 142
 143 #endif  // NET_WEBSOCKETS_WEBSOCKET_BASIC_HANDSHAKE_STREAM_H_