Field Detail

• NAME

  public static final String NAME

  See Also:

  Constant Field Values

Method Detail

• getMoreData

  public TransformationResult getMoreData(byte opCode,
                                 boolean fin,
                                 int rsv,
                                 ByteBuffer dest)
                                   throws IOException

  Description copied from interface: Transformation
  Obtain more input data.

  Specified by:

  getMoreData in interface Transformation

  Parameters:

  opCode - The opcode for the frame currently being processed

  fin - Is this the final frame in this WebSocket message?

  rsv - The reserved bits for the frame currently being processed

  dest - The buffer in which the data is to be written

  Returns:

  The result of trying to read more data from the transform

  Throws:

  IOException - If an I/O error occurs while reading data from the transform

• validateRsv

  public boolean validateRsv(int rsv,
                    byte opCode)

  Description copied from interface: Transformation
  Validates the RSV and opcode combination (assumed to have been extracted from a WebSocket Frame) for this extension. The implementation is expected to unset any RSV bits it has validated before passing the remaining RSV bits to the next transformation in the pipeline.

  Specified by:

  validateRsv in interface Transformation

  Parameters:

  rsv - The RSV bits received as an int in the range zero to seven with RSV1 as the MSB and RSV3 as the LSB

  opCode - The opCode received

  Returns:

  true if the RSV is valid otherwise false

• getExtensionResponse

  public Extension getExtensionResponse()

  Description copied from interface: Transformation
  Obtain the extension that describes the information to be returned to the client.

  Specified by:

  getExtensionResponse in interface Transformation

  Returns:

  The extension information that describes the parameters that have been agreed for this transformation

• setNext

  public void setNext(Transformation t)

  Description copied from interface: Transformation
  Sets the next transformation in the pipeline.

  Specified by:

  setNext in interface Transformation

  Parameters:

  t - The next transformation

• validateRsvBits

  public boolean validateRsvBits(int i)

  Description copied from interface: Transformation
  Validate that the RSV bit(s) required by this transformation are not being used by another extension. The implementation is expected to set any bits it requires before passing the set of in-use bits to the next transformation.

  Specified by:

  validateRsvBits in interface Transformation

  Parameters:

  i - The RSV bits marked as in use so far as an int in the range zero to seven with RSV1 as the MSB and RSV3 as the LSB

  Returns:

  true if the combination of RSV bits used by the transformations in the pipeline do not conflict otherwise false

• sendMessagePart

  public List<org.apache.tomcat.websocket.MessagePart> sendMessagePart(List<org.apache.tomcat.websocket.MessagePart> uncompressedParts)
                                                                throws IOException

  Description copied from interface: Transformation
  Takes the provided list of messages, transforms them, passes the transformed list on to the next transformation (if any) and then returns the resulting list of message parts after all of the transformations have been applied.

  Specified by:

  sendMessagePart in interface Transformation

  Parameters:

  uncompressedParts - The list of messages to be transformed

  Returns:

  The list of messages after this any any subsequent transformations have been applied. The size of the returned list may be bigger or smaller than the size of the input list

  Throws:

  IOException - If an error occurs during the transformation of the message parts

• close

  public void close()

  Description copied from interface: Transformation
  Clean-up any resources that were used by the transformation.

  Specified by:

  close in interface Transformation