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// Copyright 2013 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_WEBSOCKETS_WEBSOCKET_BASIC_HANDSHAKE_STREAM_H_
#define NET_WEBSOCKETS_WEBSOCKET_BASIC_HANDSHAKE_STREAM_H_
#include <string>
#include <vector>
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "net/base/net_export.h"
#include "net/http/http_basic_state.h"
#include "net/websockets/websocket_handshake_stream_base.h"
#include "url/gurl.h"
namespace net {
class ClientSocketHandle;
class HttpResponseHeaders;
class HttpResponseInfo;
class HttpStreamParser;
struct WebSocketExtensionParams;
class NET_EXPORT_PRIVATE WebSocketBasicHandshakeStream
: public WebSocketHandshakeStreamBase {
public:
WebSocketBasicHandshakeStream(
scoped_ptr<ClientSocketHandle> connection,
WebSocketStream::ConnectDelegate* connect_delegate,
bool using_proxy,
std::vector<std::string> requested_sub_protocols,
std::vector<std::string> requested_extensions);
virtual ~WebSocketBasicHandshakeStream();
// HttpStreamBase methods
virtual int InitializeStream(const HttpRequestInfo* request_info,
RequestPriority priority,
const BoundNetLog& net_log,
const CompletionCallback& callback) OVERRIDE;
virtual int SendRequest(const HttpRequestHeaders& request_headers,
HttpResponseInfo* response,
const CompletionCallback& callback) OVERRIDE;
virtual int ReadResponseHeaders(const CompletionCallback& callback) OVERRIDE;
virtual const HttpResponseInfo* GetResponseInfo() const OVERRIDE;
virtual int ReadResponseBody(IOBuffer* buf,
int buf_len,
const CompletionCallback& callback) OVERRIDE;
virtual void Close(bool not_reusable) OVERRIDE;
virtual bool IsResponseBodyComplete() const OVERRIDE;
virtual bool CanFindEndOfResponse() const OVERRIDE;
virtual bool IsConnectionReused() const OVERRIDE;
virtual void SetConnectionReused() OVERRIDE;
virtual bool IsConnectionReusable() const OVERRIDE;
virtual int64 GetTotalReceivedBytes() const OVERRIDE;
virtual bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const
OVERRIDE;
virtual void GetSSLInfo(SSLInfo* ssl_info) OVERRIDE;
virtual void GetSSLCertRequestInfo(
SSLCertRequestInfo* cert_request_info) OVERRIDE;
virtual bool IsSpdyHttpStream() const OVERRIDE;
virtual void Drain(HttpNetworkSession* session) OVERRIDE;
virtual void SetPriority(RequestPriority priority) OVERRIDE;
// This is called from the top level once correct handshake response headers
// have been received. It creates an appropriate subclass of WebSocketStream
// depending on what extensions were negotiated. This object is unusable after
// Upgrade() has been called and should be disposed of as soon as possible.
virtual scoped_ptr<WebSocketStream> Upgrade() OVERRIDE;
// Set the value used for the next Sec-WebSocket-Key header
// deterministically. The key is only used once, and then discarded.
// For tests only.
void SetWebSocketKeyForTesting(const std::string& key);
virtual std::string GetFailureMessage() const OVERRIDE;
private:
// A wrapper for the ReadResponseHeaders callback that checks whether or not
// the connection has been accepted.
void ReadResponseHeadersCallback(const CompletionCallback& callback,
int result);
void OnFinishOpeningHandshake();
// Validates the response and sends the finished handshake event.
int ValidateResponse(int rv);
// Check that the headers are well-formed for a 101 response, and returns
// OK if they are, otherwise returns ERR_INVALID_RESPONSE.
int ValidateUpgradeResponse(const HttpResponseHeaders* headers);
HttpStreamParser* parser() const { return state_.parser(); }
// The request URL.
GURL url_;
// HttpBasicState holds most of the handshake-related state.
HttpBasicState state_;
// Owned by another object.
// |connect_delegate| will live during the lifetime of this object.
WebSocketStream::ConnectDelegate* connect_delegate_;
// This is stored in SendRequest() for use by ReadResponseHeaders().
HttpResponseInfo* http_response_info_;
// The key to be sent in the next Sec-WebSocket-Key header. Usually NULL (the
// key is generated on the fly).
scoped_ptr<std::string> handshake_challenge_for_testing_;
// The required value for the Sec-WebSocket-Accept header.
std::string handshake_challenge_response_;
// The sub-protocols we requested.
std::vector<std::string> requested_sub_protocols_;
// The extensions we requested.
std::vector<std::string> requested_extensions_;
// The sub-protocol selected by the server.
std::string sub_protocol_;
// The extension(s) selected by the server.
std::string extensions_;
// The extension parameters. The class is defined in the implementation file
// to avoid including extension-related header files here.
scoped_ptr<WebSocketExtensionParams> extension_params_;
std::string failure_message_;
DISALLOW_COPY_AND_ASSIGN(WebSocketBasicHandshakeStream);
};
} // namespace net
#endif // NET_WEBSOCKETS_WEBSOCKET_BASIC_HANDSHAKE_STREAM_H_
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