Package org.bouncycastle.tls
Class TlsProtocol
- java.lang.Object
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- org.bouncycastle.tls.TlsProtocol
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- All Implemented Interfaces:
TlsCloseable
- Direct Known Subclasses:
TlsClientProtocol
,TlsServerProtocol
public abstract class TlsProtocol extends java.lang.Object implements TlsCloseable
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Field Summary
Fields Modifier and Type Field Description protected static short
ADS_MODE_0_N
protected static short
ADS_MODE_0_N_FIRSTONLY
protected static short
ADS_MODE_1_Nsub1
protected boolean
blocking
protected java.util.Hashtable
clientExtensions
protected short
connection_state
protected static short
CS_CLIENT_CERTIFICATE
protected static short
CS_CLIENT_CERTIFICATE_VERIFY
protected static short
CS_CLIENT_END_OF_EARLY_DATA
protected static short
CS_CLIENT_FINISHED
protected static short
CS_CLIENT_HELLO
protected static short
CS_CLIENT_HELLO_RETRY
protected static short
CS_CLIENT_KEY_EXCHANGE
protected static short
CS_CLIENT_SUPPLEMENTAL_DATA
protected static short
CS_END
protected static short
CS_SERVER_CERTIFICATE
protected static short
CS_SERVER_CERTIFICATE_REQUEST
protected static short
CS_SERVER_CERTIFICATE_STATUS
protected static short
CS_SERVER_CERTIFICATE_VERIFY
protected static short
CS_SERVER_ENCRYPTED_EXTENSIONS
protected static short
CS_SERVER_FINISHED
protected static short
CS_SERVER_HELLO
protected static short
CS_SERVER_HELLO_DONE
protected static short
CS_SERVER_HELLO_RETRY_REQUEST
protected static short
CS_SERVER_KEY_EXCHANGE
protected static short
CS_SERVER_SESSION_TICKET
protected static short
CS_SERVER_SUPPLEMENTAL_DATA
protected static short
CS_START
protected boolean
expectSessionTicket
protected static java.lang.Integer
EXT_RenegotiationInfo
protected static java.lang.Integer
EXT_SessionTicket
protected ByteQueueInputStream
inputBuffers
protected ByteQueueOutputStream
outputBuffer
protected boolean
receivedChangeCipherSpec
protected boolean
resumedSession
protected byte[]
retryCookie
protected int
retryGroup
protected java.util.Hashtable
serverExtensions
protected TlsSecret
sessionMasterSecret
protected SessionParameters
sessionParameters
protected TlsSession
tlsSession
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Constructor Summary
Constructors Modifier Constructor Description protected
TlsProtocol()
protected
TlsProtocol(java.io.InputStream input, java.io.OutputStream output)
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Method Summary
All Methods Static Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description int
applicationDataAvailable()
protected void
applyMaxFragmentLengthExtension(short maxFragmentLength)
protected static void
assertEmpty(java.io.ByteArrayInputStream buf)
Make sure the InputStream 'buf' now empty.protected void
beginHandshake()
protected void
blockForHandshake()
protected void
checkReceivedChangeCipherSpec(boolean expected)
protected void
cleanupHandshake()
void
close()
Closes this connection.protected void
closeConnection()
void
closeInput()
Should be called in non-blocking mode when the input data reaches EOF.protected void
completeHandshake()
protected static byte[]
createRandomBlock(boolean useGMTUnixTime, TlsContext context)
protected static byte[]
createRenegotiationInfo(byte[] renegotiated_connection)
protected static void
establishMasterSecret(TlsContext context, TlsKeyExchange keyExchange)
protected boolean
establishSession(TlsSession sessionToResume)
void
flush()
int
getAppDataSplitMode()
int
getApplicationDataLimit()
int
getAvailableInputBytes()
Gets the amount of received application data.int
getAvailableOutputBytes()
Gets the amount of encrypted data available to be sent.protected abstract TlsContext
getContext()
java.io.InputStream
getInputStream()
java.io.OutputStream
getOutputStream()
protected abstract TlsPeer
getPeer()
protected void
handleAlertMessage(short alertLevel, short alertDescription)
protected void
handleAlertWarningMessage(short alertDescription)
protected void
handleChangeCipherSpecMessage()
protected void
handleClose(boolean user_canceled)
protected void
handleException(short alertDescription, java.lang.String message, java.lang.Throwable e)
protected void
handleFailure()
protected abstract void
handleHandshakeMessage(short type, HandshakeMessageInput buf)
protected void
invalidateSession()
boolean
isClosed()
boolean
isHandshaking()
protected boolean
isLegacyConnectionState()
boolean
isResumableHandshake()
protected boolean
isTLSv13ConnectionState()
void
offerInput(byte[] input)
Equivalent toofferInput(input, 0, input.length)
void
offerInput(byte[] input, int inputOff, int inputLen)
Offer input from an arbitrary source.RecordPreview
previewInputRecord(byte[] recordHeader)
RecordPreview
previewOutputRecord(int applicationDataSize)
protected void
process13FinishedMessage(java.io.ByteArrayInputStream buf)
protected void
processFinishedMessage(java.io.ByteArrayInputStream buf)
protected short
processMaxFragmentLengthExtension(java.util.Hashtable clientExtensions, java.util.Hashtable serverExtensions, short alertDescription)
protected void
processRecord(short protocol, byte[] buf, int off, int len)
protected void
raiseAlertFatal(short alertDescription, java.lang.String message, java.lang.Throwable cause)
protected void
raiseAlertWarning(short alertDescription, java.lang.String message)
int
readApplicationData(byte[] buf, int offset, int len)
Read data from the network.protected static java.util.Hashtable
readExtensions(java.io.ByteArrayInputStream input)
protected static java.util.Hashtable
readExtensionsData(byte[] extBytes)
protected static java.util.Hashtable
readExtensionsData13(int handshakeType, byte[] extBytes)
protected static java.util.Hashtable
readExtensionsDataClientHello(byte[] extBytes)
int
readInput(byte[] buffer, int offset, int length)
Retrieves received application data.int
readOutput(byte[] buffer, int offset, int length)
Retrieves encrypted data to be sent.protected static java.util.Vector
readSupplementalDataMessage(java.io.ByteArrayInputStream input)
protected void
receive13KeyUpdate(java.io.ByteArrayInputStream buf)
protected void
refuseRenegotiation()
void
resumeHandshake()
protected RecordPreview
safePreviewRecordHeader(byte[] recordHeader)
protected boolean
safeReadFullRecord(byte[] input, int inputOff, int inputLen)
protected void
safeReadRecord()
protected void
safeWriteRecord(short type, byte[] buf, int offset, int len)
protected void
send13CertificateMessage(Certificate certificate)
protected void
send13CertificateVerifyMessage(DigitallySigned certificateVerify)
protected void
send13FinishedMessage()
protected void
send13KeyUpdate(boolean updateRequested)
protected void
sendCertificateMessage(Certificate certificate, java.io.OutputStream endPointHash)
protected void
sendChangeCipherSpec()
protected void
sendChangeCipherSpecMessage()
protected void
sendFinishedMessage()
protected void
sendSupplementalDataMessage(java.util.Vector supplementalData)
void
setAppDataSplitMode(int appDataSplitMode)
void
setResumableHandshake(boolean resumableHandshake)
void
writeApplicationData(byte[] buf, int offset, int len)
Write some application data.protected static void
writeExtensions(java.io.OutputStream output, java.util.Hashtable extensions)
protected static byte[]
writeExtensionsData(java.util.Hashtable extensions)
protected static void
writeExtensionsData(java.util.Hashtable extensions, java.io.ByteArrayOutputStream buf)
protected static void
writeSelectedExtensions(java.io.OutputStream output, java.util.Hashtable extensions, boolean selectEmpty)
protected static void
writeSupplementalData(java.io.OutputStream output, java.util.Vector supplementalData)
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Field Detail
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EXT_RenegotiationInfo
protected static final java.lang.Integer EXT_RenegotiationInfo
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EXT_SessionTicket
protected static final java.lang.Integer EXT_SessionTicket
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CS_START
protected static final short CS_START
- See Also:
- Constant Field Values
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CS_CLIENT_HELLO
protected static final short CS_CLIENT_HELLO
- See Also:
- Constant Field Values
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CS_SERVER_HELLO_RETRY_REQUEST
protected static final short CS_SERVER_HELLO_RETRY_REQUEST
- See Also:
- Constant Field Values
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CS_CLIENT_HELLO_RETRY
protected static final short CS_CLIENT_HELLO_RETRY
- See Also:
- Constant Field Values
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CS_SERVER_HELLO
protected static final short CS_SERVER_HELLO
- See Also:
- Constant Field Values
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CS_SERVER_ENCRYPTED_EXTENSIONS
protected static final short CS_SERVER_ENCRYPTED_EXTENSIONS
- See Also:
- Constant Field Values
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CS_SERVER_SUPPLEMENTAL_DATA
protected static final short CS_SERVER_SUPPLEMENTAL_DATA
- See Also:
- Constant Field Values
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CS_SERVER_CERTIFICATE
protected static final short CS_SERVER_CERTIFICATE
- See Also:
- Constant Field Values
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CS_SERVER_CERTIFICATE_STATUS
protected static final short CS_SERVER_CERTIFICATE_STATUS
- See Also:
- Constant Field Values
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CS_SERVER_CERTIFICATE_VERIFY
protected static final short CS_SERVER_CERTIFICATE_VERIFY
- See Also:
- Constant Field Values
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CS_SERVER_KEY_EXCHANGE
protected static final short CS_SERVER_KEY_EXCHANGE
- See Also:
- Constant Field Values
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CS_SERVER_CERTIFICATE_REQUEST
protected static final short CS_SERVER_CERTIFICATE_REQUEST
- See Also:
- Constant Field Values
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CS_SERVER_HELLO_DONE
protected static final short CS_SERVER_HELLO_DONE
- See Also:
- Constant Field Values
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CS_CLIENT_END_OF_EARLY_DATA
protected static final short CS_CLIENT_END_OF_EARLY_DATA
- See Also:
- Constant Field Values
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CS_CLIENT_SUPPLEMENTAL_DATA
protected static final short CS_CLIENT_SUPPLEMENTAL_DATA
- See Also:
- Constant Field Values
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CS_CLIENT_CERTIFICATE
protected static final short CS_CLIENT_CERTIFICATE
- See Also:
- Constant Field Values
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CS_CLIENT_KEY_EXCHANGE
protected static final short CS_CLIENT_KEY_EXCHANGE
- See Also:
- Constant Field Values
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CS_CLIENT_CERTIFICATE_VERIFY
protected static final short CS_CLIENT_CERTIFICATE_VERIFY
- See Also:
- Constant Field Values
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CS_CLIENT_FINISHED
protected static final short CS_CLIENT_FINISHED
- See Also:
- Constant Field Values
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CS_SERVER_SESSION_TICKET
protected static final short CS_SERVER_SESSION_TICKET
- See Also:
- Constant Field Values
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CS_SERVER_FINISHED
protected static final short CS_SERVER_FINISHED
- See Also:
- Constant Field Values
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CS_END
protected static final short CS_END
- See Also:
- Constant Field Values
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ADS_MODE_1_Nsub1
protected static final short ADS_MODE_1_Nsub1
- See Also:
- Constant Field Values
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ADS_MODE_0_N
protected static final short ADS_MODE_0_N
- See Also:
- Constant Field Values
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ADS_MODE_0_N_FIRSTONLY
protected static final short ADS_MODE_0_N_FIRSTONLY
- See Also:
- Constant Field Values
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tlsSession
protected TlsSession tlsSession
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sessionParameters
protected SessionParameters sessionParameters
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sessionMasterSecret
protected TlsSecret sessionMasterSecret
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retryCookie
protected byte[] retryCookie
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retryGroup
protected int retryGroup
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clientExtensions
protected java.util.Hashtable clientExtensions
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serverExtensions
protected java.util.Hashtable serverExtensions
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connection_state
protected short connection_state
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resumedSession
protected boolean resumedSession
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receivedChangeCipherSpec
protected boolean receivedChangeCipherSpec
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expectSessionTicket
protected boolean expectSessionTicket
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blocking
protected boolean blocking
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inputBuffers
protected ByteQueueInputStream inputBuffers
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outputBuffer
protected ByteQueueOutputStream outputBuffer
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Method Detail
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isLegacyConnectionState
protected boolean isLegacyConnectionState()
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isTLSv13ConnectionState
protected boolean isTLSv13ConnectionState()
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resumeHandshake
public void resumeHandshake() throws java.io.IOException
- Throws:
java.io.IOException
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closeConnection
protected void closeConnection() throws java.io.IOException
- Throws:
java.io.IOException
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getContext
protected abstract TlsContext getContext()
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getPeer
protected abstract TlsPeer getPeer()
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handleAlertMessage
protected void handleAlertMessage(short alertLevel, short alertDescription) throws java.io.IOException
- Throws:
java.io.IOException
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handleAlertWarningMessage
protected void handleAlertWarningMessage(short alertDescription) throws java.io.IOException
- Throws:
java.io.IOException
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handleChangeCipherSpecMessage
protected void handleChangeCipherSpecMessage() throws java.io.IOException
- Throws:
java.io.IOException
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handleClose
protected void handleClose(boolean user_canceled) throws java.io.IOException
- Throws:
java.io.IOException
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handleException
protected void handleException(short alertDescription, java.lang.String message, java.lang.Throwable e) throws java.io.IOException
- Throws:
java.io.IOException
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handleFailure
protected void handleFailure() throws java.io.IOException
- Throws:
java.io.IOException
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handleHandshakeMessage
protected abstract void handleHandshakeMessage(short type, HandshakeMessageInput buf) throws java.io.IOException
- Throws:
java.io.IOException
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applyMaxFragmentLengthExtension
protected void applyMaxFragmentLengthExtension(short maxFragmentLength) throws java.io.IOException
- Throws:
java.io.IOException
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checkReceivedChangeCipherSpec
protected void checkReceivedChangeCipherSpec(boolean expected) throws java.io.IOException
- Throws:
java.io.IOException
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blockForHandshake
protected void blockForHandshake() throws java.io.IOException
- Throws:
java.io.IOException
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beginHandshake
protected void beginHandshake() throws java.io.IOException
- Throws:
java.io.IOException
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cleanupHandshake
protected void cleanupHandshake()
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completeHandshake
protected void completeHandshake() throws java.io.IOException
- Throws:
java.io.IOException
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processRecord
protected void processRecord(short protocol, byte[] buf, int off, int len) throws java.io.IOException
- Throws:
java.io.IOException
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applicationDataAvailable
public int applicationDataAvailable()
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readApplicationData
public int readApplicationData(byte[] buf, int offset, int len) throws java.io.IOException
Read data from the network. The method will return immediately, if there is still some data left in the buffer, or block until some application data has been read from the network.- Parameters:
buf
- The buffer where the data will be copied to.offset
- The position where the data will be placed in the buffer.len
- The maximum number of bytes to read.- Returns:
- The number of bytes read.
- Throws:
java.io.IOException
- If something goes wrong during reading data.
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safePreviewRecordHeader
protected RecordPreview safePreviewRecordHeader(byte[] recordHeader) throws java.io.IOException
- Throws:
java.io.IOException
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safeReadRecord
protected void safeReadRecord() throws java.io.IOException
- Throws:
java.io.IOException
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safeReadFullRecord
protected boolean safeReadFullRecord(byte[] input, int inputOff, int inputLen) throws java.io.IOException
- Throws:
java.io.IOException
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safeWriteRecord
protected void safeWriteRecord(short type, byte[] buf, int offset, int len) throws java.io.IOException
- Throws:
java.io.IOException
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writeApplicationData
public void writeApplicationData(byte[] buf, int offset, int len) throws java.io.IOException
Write some application data. Fragmentation is handled internally. Usable in both blocking/non-blocking modes.
In blocking mode, the output will be automatically sent via the underlying transport. In non-blocking mode, callreadOutput(byte[], int, int)
to get the output bytes to send to the peer.
This method must not be called until after the initial handshake is complete. Attempting to call it earlier will result in anIllegalStateException
.- Parameters:
buf
- The buffer containing application data to sendoffset
- The offset at which the application data beginslen
- The number of bytes of application data- Throws:
java.lang.IllegalStateException
- If called before the initial handshake has completed.java.io.IOException
- If connection is already closed, or for encryption or transport errors.
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getAppDataSplitMode
public int getAppDataSplitMode()
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setAppDataSplitMode
public void setAppDataSplitMode(int appDataSplitMode)
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isResumableHandshake
public boolean isResumableHandshake()
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setResumableHandshake
public void setResumableHandshake(boolean resumableHandshake)
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getOutputStream
public java.io.OutputStream getOutputStream()
- Returns:
- An OutputStream which can be used to send data. Only allowed in blocking mode.
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getInputStream
public java.io.InputStream getInputStream()
- Returns:
- An InputStream which can be used to read data. Only allowed in blocking mode.
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closeInput
public void closeInput() throws java.io.IOException
Should be called in non-blocking mode when the input data reaches EOF.- Throws:
java.io.IOException
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previewInputRecord
public RecordPreview previewInputRecord(byte[] recordHeader) throws java.io.IOException
- Throws:
java.io.IOException
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previewOutputRecord
public RecordPreview previewOutputRecord(int applicationDataSize) throws java.io.IOException
- Throws:
java.io.IOException
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offerInput
public void offerInput(byte[] input) throws java.io.IOException
Equivalent toofferInput(input, 0, input.length)
- Parameters:
input
- The input buffer to offer- Throws:
java.io.IOException
- If an error occurs while decrypting or processing a record- See Also:
offerInput(byte[], int, int)
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offerInput
public void offerInput(byte[] input, int inputOff, int inputLen) throws java.io.IOException
Offer input from an arbitrary source. Only allowed in non-blocking mode.
This method will decrypt and process all records that are fully available. If only part of a record is available, the buffer will be retained until the remainder of the record is offered.
If any records containing application data were processed, the decrypted data can be obtained usingreadInput(byte[], int, int)
. If any records containing protocol data were processed, a response may have been generated. You should always check to see if there is any available output after calling this method by callinggetAvailableOutputBytes()
.- Parameters:
input
- The input buffer to offerinputOff
- The offset within the input buffer that input beginsinputLen
- The number of bytes of input being offered- Throws:
java.io.IOException
- If an error occurs while decrypting or processing a record
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getApplicationDataLimit
public int getApplicationDataLimit()
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getAvailableInputBytes
public int getAvailableInputBytes()
Gets the amount of received application data. A call toreadInput(byte[], int, int)
is guaranteed to be able to return at least this much data.
Only allowed in non-blocking mode.- Returns:
- The number of bytes of available application data
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readInput
public int readInput(byte[] buffer, int offset, int length)
Retrieves received application data. UsegetAvailableInputBytes()
to check how much application data is currently available. This method functions similarly toInputStream.read(byte[], int, int)
, except that it never blocks. If no data is available, nothing will be copied and zero will be returned.
Only allowed in non-blocking mode.- Parameters:
buffer
- The buffer to hold the application dataoffset
- The start offset in the buffer at which the data is writtenlength
- The maximum number of bytes to read- Returns:
- The total number of bytes copied to the buffer. May be less than the length specified if the length was greater than the amount of available data.
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getAvailableOutputBytes
public int getAvailableOutputBytes()
Gets the amount of encrypted data available to be sent. A call toreadOutput(byte[], int, int)
is guaranteed to be able to return at least this much data.
Only allowed in non-blocking mode.- Returns:
- The number of bytes of available encrypted data
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readOutput
public int readOutput(byte[] buffer, int offset, int length)
Retrieves encrypted data to be sent. UsegetAvailableOutputBytes()
to check how much encrypted data is currently available. This method functions similarly toInputStream.read(byte[], int, int)
, except that it never blocks. If no data is available, nothing will be copied and zero will be returned.
Only allowed in non-blocking mode.- Parameters:
buffer
- The buffer to hold the encrypted dataoffset
- The start offset in the buffer at which the data is writtenlength
- The maximum number of bytes to read- Returns:
- The total number of bytes copied to the buffer. May be less than the length specified if the length was greater than the amount of available data.
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establishSession
protected boolean establishSession(TlsSession sessionToResume)
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invalidateSession
protected void invalidateSession()
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processFinishedMessage
protected void processFinishedMessage(java.io.ByteArrayInputStream buf) throws java.io.IOException
- Throws:
java.io.IOException
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process13FinishedMessage
protected void process13FinishedMessage(java.io.ByteArrayInputStream buf) throws java.io.IOException
- Throws:
java.io.IOException
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raiseAlertFatal
protected void raiseAlertFatal(short alertDescription, java.lang.String message, java.lang.Throwable cause) throws java.io.IOException
- Throws:
java.io.IOException
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raiseAlertWarning
protected void raiseAlertWarning(short alertDescription, java.lang.String message) throws java.io.IOException
- Throws:
java.io.IOException
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receive13KeyUpdate
protected void receive13KeyUpdate(java.io.ByteArrayInputStream buf) throws java.io.IOException
- Throws:
java.io.IOException
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sendCertificateMessage
protected void sendCertificateMessage(Certificate certificate, java.io.OutputStream endPointHash) throws java.io.IOException
- Throws:
java.io.IOException
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send13CertificateMessage
protected void send13CertificateMessage(Certificate certificate) throws java.io.IOException
- Throws:
java.io.IOException
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send13CertificateVerifyMessage
protected void send13CertificateVerifyMessage(DigitallySigned certificateVerify) throws java.io.IOException
- Throws:
java.io.IOException
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sendChangeCipherSpec
protected void sendChangeCipherSpec() throws java.io.IOException
- Throws:
java.io.IOException
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sendChangeCipherSpecMessage
protected void sendChangeCipherSpecMessage() throws java.io.IOException
- Throws:
java.io.IOException
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sendFinishedMessage
protected void sendFinishedMessage() throws java.io.IOException
- Throws:
java.io.IOException
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send13FinishedMessage
protected void send13FinishedMessage() throws java.io.IOException
- Throws:
java.io.IOException
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send13KeyUpdate
protected void send13KeyUpdate(boolean updateRequested) throws java.io.IOException
- Throws:
java.io.IOException
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sendSupplementalDataMessage
protected void sendSupplementalDataMessage(java.util.Vector supplementalData) throws java.io.IOException
- Throws:
java.io.IOException
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close
public void close() throws java.io.IOException
Closes this connection.- Specified by:
close
in interfaceTlsCloseable
- Throws:
java.io.IOException
- If something goes wrong during closing.
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flush
public void flush() throws java.io.IOException
- Throws:
java.io.IOException
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isClosed
public boolean isClosed()
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isHandshaking
public boolean isHandshaking()
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processMaxFragmentLengthExtension
protected short processMaxFragmentLengthExtension(java.util.Hashtable clientExtensions, java.util.Hashtable serverExtensions, short alertDescription) throws java.io.IOException
- Throws:
java.io.IOException
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refuseRenegotiation
protected void refuseRenegotiation() throws java.io.IOException
- Throws:
java.io.IOException
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assertEmpty
protected static void assertEmpty(java.io.ByteArrayInputStream buf) throws java.io.IOException
Make sure the InputStream 'buf' now empty. Fail otherwise.- Parameters:
buf
- The InputStream to check.- Throws:
java.io.IOException
- If 'buf' is not empty.
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createRandomBlock
protected static byte[] createRandomBlock(boolean useGMTUnixTime, TlsContext context)
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createRenegotiationInfo
protected static byte[] createRenegotiationInfo(byte[] renegotiated_connection) throws java.io.IOException
- Throws:
java.io.IOException
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establishMasterSecret
protected static void establishMasterSecret(TlsContext context, TlsKeyExchange keyExchange) throws java.io.IOException
- Throws:
java.io.IOException
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readExtensions
protected static java.util.Hashtable readExtensions(java.io.ByteArrayInputStream input) throws java.io.IOException
- Throws:
java.io.IOException
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readExtensionsData
protected static java.util.Hashtable readExtensionsData(byte[] extBytes) throws java.io.IOException
- Throws:
java.io.IOException
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readExtensionsData13
protected static java.util.Hashtable readExtensionsData13(int handshakeType, byte[] extBytes) throws java.io.IOException
- Throws:
java.io.IOException
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readExtensionsDataClientHello
protected static java.util.Hashtable readExtensionsDataClientHello(byte[] extBytes) throws java.io.IOException
- Throws:
java.io.IOException
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readSupplementalDataMessage
protected static java.util.Vector readSupplementalDataMessage(java.io.ByteArrayInputStream input) throws java.io.IOException
- Throws:
java.io.IOException
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writeExtensions
protected static void writeExtensions(java.io.OutputStream output, java.util.Hashtable extensions) throws java.io.IOException
- Throws:
java.io.IOException
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writeExtensionsData
protected static byte[] writeExtensionsData(java.util.Hashtable extensions) throws java.io.IOException
- Throws:
java.io.IOException
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writeExtensionsData
protected static void writeExtensionsData(java.util.Hashtable extensions, java.io.ByteArrayOutputStream buf) throws java.io.IOException
- Throws:
java.io.IOException
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writeSelectedExtensions
protected static void writeSelectedExtensions(java.io.OutputStream output, java.util.Hashtable extensions, boolean selectEmpty) throws java.io.IOException
- Throws:
java.io.IOException
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writeSupplementalData
protected static void writeSupplementalData(java.io.OutputStream output, java.util.Vector supplementalData) throws java.io.IOException
- Throws:
java.io.IOException
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