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// Copyright (c) 2010 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_HANDSHAKE_H_
#define NET_WEBSOCKETS_WEBSOCKET_HANDSHAKE_H_
#include <string>
#include "base/basictypes.h"
#include "googleurl/src/gurl.h"
namespace net {
class HttpResponseHeaders;
class WebSocketHandshake {
public:
static const int kWebSocketPort;
static const int kSecureWebSocketPort;
static const char kServerHandshakeHeader[];
static const size_t kServerHandshakeHeaderLength;
static const char kUpgradeHeader[];
static const size_t kUpgradeHeaderLength;
static const char kConnectionHeader[];
static const size_t kConnectionHeaderLength;
enum Mode {
MODE_INCOMPLETE, MODE_NORMAL, MODE_FAILED, MODE_CONNECTED
};
WebSocketHandshake(const GURL& url,
const std::string& origin,
const std::string& location,
const std::string& protocol);
~WebSocketHandshake();
bool is_secure() const;
// Creates the client handshake message from |this|.
std::string CreateClientHandshakeMessage() const;
// Reads server handshake message in |len| of |data|, updates |mode_| and
// returns number of bytes of the server handshake message.
// Once connection is established, |mode_| will be MODE_CONNECTED.
// If connection establishment failed, |mode_| will be MODE_FAILED.
// Returns negative if the server handshake message is incomplete.
int ReadServerHandshake(const char* data, size_t len);
Mode mode() const { return mode_; }
private:
// Processes server handshake message, parsed as |headers|, and updates
// |ws_origin_|, |ws_location_| and |ws_protocol_|.
// Returns true if it's ok.
// Returns false otherwise (e.g. duplicate WebSocket-Origin: header, etc.)
bool ProcessHeaders(const HttpResponseHeaders& headers);
// Checks |ws_origin_|, |ws_location_| and |ws_protocol_| are valid
// against |origin_|, |location_| and |protocol_|.
// Returns true if it's ok.
// Returns false otherwise (e.g. origin mismatch, etc.)
bool CheckResponseHeaders() const;
GURL url_;
// Handshake messages that the client is going to send out.
std::string origin_;
std::string location_;
std::string protocol_;
Mode mode_;
// Handshake messages that server sent.
std::string ws_origin_;
std::string ws_location_;
std::string ws_protocol_;
DISALLOW_COPY_AND_ASSIGN(WebSocketHandshake);
};
} // namespace net
#endif // NET_WEBSOCKETS_WEBSOCKET_HANDSHAKE_H_
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