Source/modules/websockets/WebSocketPerMessageDeflate.h - Issue 639333003: Delete the old WebSocket implementation.

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Issue 639333003: Delete the old WebSocket implementation. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: rebase Created 6 years, 2 months ago

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1 /*

2 * Copyright (C) 2013 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 #ifndef WebSocketPerMessageDeflate_h

32 #define WebSocketPerMessageDeflate_h

33

34 #include "modules/websockets/WebSocketDeflater.h"

35 #include "modules/websockets/WebSocketExtensionProcessor.h"

36 #include "modules/websockets/WebSocketFrame.h"

37 #include "wtf/OwnPtr.h"

38 #include "wtf/PassOwnPtr.h"

39

40 namespace blink {

41

42 // WebSocketPerMessageDeflate is a deflater / inflater for a WebSocket message w ith DEFLATE algorithm.

43 // See http://tools.ietf.org/html/draft-ietf-hybi-permessage-compression-08

44 class WebSocketPerMessageDeflate {

45 public:

46 WebSocketPerMessageDeflate();

47

48 PassOwnPtr<WebSocketExtensionProcessor> createExtensionProcessor();

49

50 void enable(int windowBits, WebSocketDeflater::ContextTakeOverMode);

51 bool enabled() const { return m_enabled; }

52

53 // Deflate the given frame.

54 // Return true if the method succeeds.

55 // The method succeeds and does nothing if this object is not enabled.

56 // This method may rewrite the parameter.

57 // If the compression is done, the payload member of the frame will point th e internal buffer

58 // and the pointer will be valid until resetDeflateBuffer is called.

59 bool deflate(WebSocketFrame&);

60

61 // Reset the internal buffer used by deflate.

62 // You must call this method between consecutive calls of the deflate method .

63 void resetDeflateBuffer();

64

65 // Inflate the given frame.

66 // Return true if the method succeeds.

67 // The method succeeds and does nothing if this object is not enabled.

68 // This method may rewrite the parameter.

69 // If the decompression is done, the payload member of the frame will point the internal buffer

70 // and the pointer will be valid until resetInflateBuffer is called.

71 bool inflate(WebSocketFrame&);

72

73 // Reset the internal buffer used by inflate.

74 // You must call this method between consecutive calls of the inflate method .

75 void resetInflateBuffer();

76

77 // Return the reason of the last failure in inflate or deflate.

78 String failureReason() { return m_failureReason; }

79

80 void didFail();

81

82 private:

83 bool m_enabled;

84 bool m_deflateOngoing;

85 bool m_inflateOngoing;

86 String m_failureReason;

87 OwnPtr<WebSocketDeflater> m_deflater;

88 OwnPtr<WebSocketInflater> m_inflater;

89 };

90

91 }

92

93 #endif // WebSocketPerMessageDeflate_h

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