1/*
2 * Copyright (C) 2012 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#pragma once
32
33#include "WebSocketExtensionProcessor.h"
34#include <wtf/Vector.h>
35#include <wtf/text/StringBuilder.h>
36#include <wtf/text/WTFString.h>
37
38namespace WebCore {
39
40class WebSocketExtensionDispatcher {
41public:
42 WebSocketExtensionDispatcher() { }
43
44 void reset();
45 void addProcessor(std::unique_ptr<WebSocketExtensionProcessor>);
46 const String createHeaderValue() const;
47
48 bool processHeaderValue(const String&);
49 String acceptedExtensions() const;
50 String failureReason() const;
51
52private:
53 void appendAcceptedExtension(const String& extensionToken, HashMap<String, String>& extensionParameters);
54 void fail(const String& reason);
55
56 Vector<std::unique_ptr<WebSocketExtensionProcessor>> m_processors;
57 StringBuilder m_acceptedExtensionsBuilder;
58 String m_failureReason;
59};
60
61} // namespace WebCore
62