org.opengts.util
Class ServerSocketThread

java.lang.Object
  java.lang.Thread
      org.opengts.util.ServerSocketThread

All Implemented Interfaces:

java.lang.Runnable

public class ServerSocketThread
extends java.lang.Thread

Nested Class Summary

class	ServerSocketThread.ServerSessionThread ServerSessionThread
static interface	ServerSocketThread.SessionInfo SessionInfo
static class	ServerSocketThread.SSEndOfStreamException SSEndOfStreamException
static class	ServerSocketThread.SSReadTimeoutException SSReadTimeoutException
static class	ServerSocketThread.SSSessionTimeoutException SSSessionTimeoutException

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

static boolean	ACK_FROM_LISTEN_PORT
static int	MinimumTimeoutIntervalMS
static int	PACKET_LEN_END_OF_STREAM
static int	PACKET_LEN_INCREMENT_EOL
static int	PACKET_LEN_INCREMENTAL_
static int	PACKET_LEN_INCREMENTAL_MASK
static int	PACKET_LEN_LINE_TERMINATOR

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

ServerSocketThread(java.net.DatagramSocket ds)
Constructor for UDP connections

ServerSocketThread(java.net.InetAddress bindAddr, int port)
Constructor for TCP connections

ServerSocketThread(java.net.InetAddress bindAddr, int port, boolean useSSL)
Constructor for TCP connections

ServerSocketThread(int port)
Constructor for TCP connections

ServerSocketThread(int port, boolean useSSL)
Constructor for TCP connections

ServerSocketThread(java.net.ServerSocket ss)
Constructor for TCP connections

Method Summary

void	addActionListener(java.awt.event.ActionListener al) Adds an action listener
static java.net.DatagramSocket	createDatagramSocket(java.net.InetAddress bindAddr, int port) Creates a DatagramSocket bound to the default local interface
static java.net.ServerSocket	createServerSocket(java.net.InetAddress bindAddr, int port) Creates a ServerSocket bound to the default local interface
int[]	getBackspaceChar() Gets the backspace characters
java.net.InetAddress	getBindAddress() Gets the local bind address
ClientPacketHandler	getClientPacketHandler() Gets the current client packet handler
java.net.DatagramSocket	getDatagramSocket() Gets the bound UDP DatagramSocket for this server handler.
static java.net.InetAddress	getDefaultBindAddress() Gets the local bind address for all created ServerSocket's, or null if no specific bind address has been set
long	getIdleTimeout() Gets the idle timeout in milliseconds
int[]	getIgnoreChar() Gets the characters to ignore
boolean	getIncludePacketLineTerminator() Returns True if the line terminator character should be included in the returned packet
int[]	getLineTerminatorChar() Gets the line terminator characters
int	getLingerTimeoutSec() Gets the linger timeout in seconds
int	getLocalPort() Gets the local port to which this socket is bound
boolean	getLoggingEnabled() Gets the logging enabled flag.
int	getMaximumClientThreadPoolSize() Gets the maximum client thread pool size
int	getMaximumPacketLength() Gets the maximum packet length
int	getMinimumPacketLength() Gets the minimum packet length
static java.net.InetAddress[]	getNetworkInterfaceAddresses() Returns an array of all local network interface addresses (excluding loopback)
byte[]	getPacketTerminatorPattern() Returns the packet terminator pattern
long	getPacketTimeout() Gets the packet timeout in milliseconds
protected byte[]	getPrompt(int ndx) Gets the prompt for a specified index
boolean	getPromptEnabled() Gets the prompt enabled state
protected int	getPromptIndex() Gets the current prompt index (used for auto prompt)
int	getRemotePort() Gets the remote UDP response port
java.net.ServerSocket	getServerSocket() Gets the bound TCP ServerSocket for this server handler.
long	getSessionTimeout() Gets the session timeout in milliseconds
boolean	getTerminateOnTimeout() Gets if the thread should be terminated after a timeout [CHECK]
static boolean	hasBindAddress() Returns true if a local bind address has been defined, otherwise false
boolean	hasListeners() Returns true if this object has action listeners
boolean	hasPrompt() If this server has a valid prompt
boolean	hasSessionTimeout() Returns true if the session timeout has been defined
boolean	includePacketLineTerminator() Returns True if the line terminator character should be included in the returned packet
protected boolean	invokeListeners(byte[] msgBytes) Invokes action listener with the specified message
boolean	isBackspaceChar(int ch) Returns true if ch is a backspace character
boolean	isIgnoreChar(int ch) Returns true if ch is a character to ignore
boolean	isLineTerminatorChar(int ch) Returns true if ch is a line terminator
static boolean	isLocalInterfaceAddress(java.net.InetAddress addr) Returns true if the specified InetAddress is a local bound interface (including loopback)
boolean	isTextPackets() Returns true if the packets are text
static boolean	isValidPort(int port) Returns true if the specified port is valid
boolean	logActiveSessions(java.lang.String header) Displays the active session list to the current log file (using "Print.logInfo")
boolean	logActiveSessions(java.lang.String header, java.lang.StringBuffer asb) Displays the active session list
static void	main(java.lang.String[] argv)
void	removeActionListener(java.awt.event.ActionListener al) Removes an action listener
void	run() Listens for incoming connections and dispatches them to a handler thread
boolean	runInputStreamSession(java.io.InputStream dataInput, boolean isDuplex, boolean waitUntilDone) Run a test session from the specified input stream
static void	sendDatagram(java.net.InetAddress bind, java.net.InetAddress host, int port, byte[] data) Sends a datagram to the specified host:port
static void	sendDatagram(java.net.InetAddress host, int port, byte[] data) Sends a datagram to the specified host:port
void	setAutoPrompt(boolean auto) If a default automatically generated prompt should be used [CHECK](all prompt related below)
void	setBackspaceChar(int bs) Sets the backspace character
void	setBackspaceChar(int[] bs) Sets the backspace characters
static void	setBindAddress(java.net.InetAddress bindAddr) Sets the local bind address for all created ServerSocket's
void	setClientPacketHandler(ClientPacketHandler cph) Sets the client packet handler [CHECK]
void	setClientPacketHandlerClass(java.lang.Class<? extends ClientPacketHandler> cphc) Sets the client packet handler class [CHECK]
void	setIdleTimeout(long timeoutMS) Sets the idle timeout in milliseconds
void	setIgnoreChar(int[] bs) Sets the characters to ignore
void	setIncludePacketLineTerminator(boolean rtnTerm) Sets whether the line terminator character should be included in the returned packets
void	setLineTerminatorChar(int term) Sets the line terminator character
void	setLineTerminatorChar(int[] term) Sets the line terminator characters
void	setLingerTimeoutSec(int timeoutSec) Sets the linger timeout in seconds
static void	setListenBacklog(int backlog) Sets the listen backlog for all created ServerSocket's
void	setLoggingEnabled(boolean enable) Sets the logging enabled flag.
void	setMaximumClientThreadPoolSize(int maxSize) Sets the maximum client thread pool size
void	setMaximumPacketLength(int len) Sets the maximum packet length
void	setMinimumPacketLength(int len) Sets the minimum packet length
static void	setMinimuTimeoutIntervalMS(int minTMS) Sets the minimum timeout interval used for calling the ClientPacketHandler method "idleTimeoutInterrupt()".
void	setPacketTerminatorPattern(byte[] pktTerm) Sets the packet terminator pattern
void	setPacketTimeout(long timeoutMS) Sets the packet timeout in milliseconds
void	setPrompt(byte[] prompt) Sets the prompt for TCP connections
void	setPrompt(java.lang.String prompt) Sets the prompt for TCP connections
void	setPromptEnabled(boolean enable) Sets the prompt enabled state
void	setRemotePort(int remotePort) Sets the remote UDP response port
void	setSessionTimeout(long timeoutMS) Sets the session timeout in milliseconds
void	setTerminateOnTimeout(boolean timeoutQuit) Sets if the thread should be terminated after a timeout [CHECK]
void	setTextPackets(boolean isText) Sets if the packets to be sent are text
boolean	shutdown(long tmoMS) Shuts down the server
static boolean	shutdownAll(long tmoMS)
void	start() Starts main ServerSocketThread port listener thread
void	start(java.lang.String name) Starts this thread handler
boolean	sysPrintActiveSessions(java.lang.String header) Prints the active session list to stdout
boolean	tcpWriteToSessionID(java.lang.String sessionID, byte[] data) Find the named TCP session and write the specified bytes TCP output stream
void	testSession(byte[] data, boolean isDuplex) Run a test session from the specified input data array
void	testSession(java.io.InputStream dataInput, boolean isDuplex) Run a test session from the specified input stream

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

PACKET_LEN_INCREMENTAL_

public static final int PACKET_LEN_INCREMENTAL_

See Also:

Constant Field Values

PACKET_LEN_INCREMENTAL_MASK

public static final int PACKET_LEN_INCREMENTAL_MASK

See Also:

Constant Field Values

PACKET_LEN_LINE_TERMINATOR

public static final int PACKET_LEN_LINE_TERMINATOR

See Also:

Constant Field Values

PACKET_LEN_END_OF_STREAM

public static final int PACKET_LEN_END_OF_STREAM

See Also:

Constant Field Values

PACKET_LEN_INCREMENT_EOL

public static final int PACKET_LEN_INCREMENT_EOL

See Also:

Constant Field Values

ACK_FROM_LISTEN_PORT

public static final boolean ACK_FROM_LISTEN_PORT

See Also:

Constant Field Values

MinimumTimeoutIntervalMS

public static int MinimumTimeoutIntervalMS

Constructor Detail

ServerSocketThread

public ServerSocketThread(java.net.DatagramSocket ds)

Constructor for UDP connections

ServerSocketThread

public ServerSocketThread(java.net.ServerSocket ss)

Constructor for TCP connections

Parameters:

ss - The ServerSocket containing the 'listen' port information

ServerSocketThread

public ServerSocketThread(java.net.InetAddress bindAddr,
                          int port)
                   throws java.io.IOException

Constructor for TCP connections

Parameters:

port - The port on which to listen for incoming connections

Throws:

java.io.IOException

ServerSocketThread

public ServerSocketThread(int port)
                   throws java.io.IOException

Constructor for TCP connections

Parameters:

port - The port on which to listen for incoming connections

Throws:

java.io.IOException

ServerSocketThread

public ServerSocketThread(java.net.InetAddress bindAddr,
                          int port,
                          boolean useSSL)
                   throws java.io.IOException

Constructor for TCP connections

Parameters:

port - The port on which to listen for incoming connections

useSSL - True to enable an SSL

Throws:

java.io.IOException

ServerSocketThread

public ServerSocketThread(int port,
                          boolean useSSL)
                   throws java.io.IOException

Constructor for TCP connections

Parameters:

port - The port on which to listen for incoming connections

useSSL - True to enable an SSL

Throws:

java.io.IOException

Method Detail

setMinimuTimeoutIntervalMS

public static void setMinimuTimeoutIntervalMS(int minTMS)

Sets the minimum timeout interval used for calling the ClientPacketHandler method "idleTimeoutInterrupt()".

Parameters:

minTMS - The minimum timeout interval in milliseconds.

setListenBacklog

public static void setListenBacklog(int backlog)

Sets the listen backlog for all created ServerSocket's

Parameters:

backlog - The listen backlog

setBindAddress

public static void setBindAddress(java.net.InetAddress bindAddr)

Sets the local bind address for all created ServerSocket's

Parameters:

bindAddr - The local bind address

hasBindAddress

public static boolean hasBindAddress()

Returns true if a local bind address has been defined, otherwise false

Returns:

True if a local bind address has been defined, otherwise false

getDefaultBindAddress

public static java.net.InetAddress getDefaultBindAddress()

Gets the local bind address for all created ServerSocket's, or null if no specific bind address has been set

Returns:

The local bind address

getNetworkInterfaceAddresses

public static java.net.InetAddress[] getNetworkInterfaceAddresses()
                                                           throws java.net.SocketException

Returns an array of all local network interface addresses (excluding loopback)

Returns:

An array of all local network interface addresses

Throws:

java.net.SocketException

isLocalInterfaceAddress

public static boolean isLocalInterfaceAddress(java.net.InetAddress addr)

Returns true if the specified InetAddress is a local bound interface (including loopback)

Returns:

True if the specified InetAddress is a local bound interface

createDatagramSocket

public static java.net.DatagramSocket createDatagramSocket(java.net.InetAddress bindAddr,
                                                           int port)
                                                    throws java.net.SocketException

Creates a DatagramSocket bound to the default local interface

Returns:

The created DatagramSocket

Throws:

java.net.SocketException

createServerSocket

public static java.net.ServerSocket createServerSocket(java.net.InetAddress bindAddr,
                                                       int port)
                                                throws java.io.IOException

Creates a ServerSocket bound to the default local interface

Returns:

The created ServerSocket

Throws:

java.io.IOException

isValidPort

public static boolean isValidPort(int port)

Returns true if the specified port is valid

Parameters:

port - The port to test

Returns:

True if the specified port is valid

shutdownAll

public static boolean shutdownAll(long tmoMS)

start

public void start()

Starts main ServerSocketThread port listener thread

Overrides:

start in class java.lang.Thread

Throws:

java.lang.OutOfMemoryError - If unable to create new native thread.

java.lang.IllegalThreadStateException - If thread has already been started.

start

public void start(java.lang.String name)

Starts this thread handler

Parameters:

name - the name to assign to this thread

setLoggingEnabled

public void setLoggingEnabled(boolean enable)

Sets the logging enabled flag. (Print.logInfo and Print.logDebug messages will not be performed).

Parameters:

enable - True to enable, false to deisable (default is enabled)

getLoggingEnabled

public boolean getLoggingEnabled()

Gets the logging enabled flag.

Returns:

True if enabled, false otherwise

setMaximumClientThreadPoolSize

public void setMaximumClientThreadPoolSize(int maxSize)

Sets the maximum client thread pool size

Parameters:

maxSize - The maximum number of allowed client handler threads. <= 0 for unlimited.

getMaximumClientThreadPoolSize

public int getMaximumClientThreadPoolSize()

Gets the maximum client thread pool size

Returns:

The maximum number of allowed client handler threads. 0 if unlimited.

getDatagramSocket

public java.net.DatagramSocket getDatagramSocket()

Gets the bound UDP DatagramSocket for this server handler. Will return null if this server handler does not handle UDP connections.

Returns:

The DatagramSocket handle

getServerSocket

public java.net.ServerSocket getServerSocket()

Gets the bound TCP ServerSocket for this server handler. Will return null if this server handler does not handle TCP connections.

Returns:

The DatagramSocket handle

getLocalPort

public int getLocalPort()

Gets the local port to which this socket is bound

Returns:

the local port to which this socket is bound

getBindAddress

public java.net.InetAddress getBindAddress()

Gets the local bind address

testSession

public void testSession(byte[] data,
                        boolean isDuplex)

Run a test session from the specified input data array

Parameters:

data - The test input data array

testSession

public void testSession(java.io.InputStream dataInput,
                        boolean isDuplex)

Run a test session from the specified input stream

Parameters:

dataInput - The test input stream

runInputStreamSession

public boolean runInputStreamSession(java.io.InputStream dataInput,
                                     boolean isDuplex,
                                     boolean waitUntilDone)

Run a test session from the specified input stream

Parameters:

dataInput - The test input stream

isDuplex - True to mimic "isDuplex()" in the AbstractClientPacketHandler

waitUntilDone - True to wait until the parsing is complete

run

public void run()

Listens for incoming connections and dispatches them to a handler thread

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

shutdown

public boolean shutdown(long tmoMS)

Shuts down the server

setRemotePort

public void setRemotePort(int remotePort)

Sets the remote UDP response port

Parameters:

remotePort - The remote UDP respose port

getRemotePort

public int getRemotePort()

Gets the remote UDP response port

Returns:

The remote UDP respose port

hasListeners

public boolean hasListeners()

Returns true if this object has action listeners

Returns:

True if this object has action listeners

addActionListener

public void addActionListener(java.awt.event.ActionListener al)

Adds an action listener

Parameters:

al - The action listener to add

removeActionListener

public void removeActionListener(java.awt.event.ActionListener al)

Removes an action listener

Parameters:

al - The action listener to remove

invokeListeners

protected boolean invokeListeners(byte[] msgBytes)
                           throws java.lang.Exception

Invokes action listener with the specified message

Parameters:

msgBytes - The message to invoke the listeners with as a byte array

Returns:

True if succesful

Throws:

java.lang.Exception

setClientPacketHandler

public void setClientPacketHandler(ClientPacketHandler cph)

Sets the client packet handler [CHECK]

Parameters:

cph - The client packet handler

setClientPacketHandlerClass

public void setClientPacketHandlerClass(java.lang.Class<? extends ClientPacketHandler> cphc)

Sets the client packet handler class [CHECK]

Parameters:

cphc - The client packet handler class

getClientPacketHandler

public ClientPacketHandler getClientPacketHandler()

Gets the current client packet handler

Returns:

The current client packet handler

setSessionTimeout

public void setSessionTimeout(long timeoutMS)

Sets the session timeout in milliseconds

Parameters:

timeoutMS - The session timeout in milliseconds

getSessionTimeout

public long getSessionTimeout()

Gets the session timeout in milliseconds

Returns:

The session timeout in milliseconds

hasSessionTimeout

public boolean hasSessionTimeout()

Returns true if the session timeout has been defined

Returns:

True if the session timeout has been defined

setIdleTimeout

public void setIdleTimeout(long timeoutMS)

Sets the idle timeout in milliseconds

Parameters:

timeoutMS - The idle timeout in milliseconds

getIdleTimeout

public long getIdleTimeout()

Gets the idle timeout in milliseconds

Returns:

The idle timeout in milliseconds

setPacketTimeout

public void setPacketTimeout(long timeoutMS)

Sets the packet timeout in milliseconds

Parameters:

timeoutMS - The packet timeout in milliseconds

getPacketTimeout

public long getPacketTimeout()

Gets the packet timeout in milliseconds

Returns:

The packet timeout in milliseconds

setTerminateOnTimeout

public void setTerminateOnTimeout(boolean timeoutQuit)

Sets if the thread should be terminated after a timeout [CHECK]

Parameters:

timeoutQuit - True if the thread should be terminated after a timeout

getTerminateOnTimeout

public boolean getTerminateOnTimeout()

Gets if the thread should be terminated after a timeout [CHECK]

Returns:

True if the thread should be terminated after a timeout

setLingerTimeoutSec

public void setLingerTimeoutSec(int timeoutSec)

Sets the linger timeout in seconds

Parameters:

timeoutSec - The linger timeout in seconds

getLingerTimeoutSec

public int getLingerTimeoutSec()

Gets the linger timeout in seconds

Returns:

The linger timeout in seconds

setTextPackets

public void setTextPackets(boolean isText)

Sets if the packets to be sent are text

Parameters:

isText - True if the packets are text

isTextPackets

public boolean isTextPackets()

Returns true if the packets are text

Returns:

Ture if the packets are text

setMaximumPacketLength

public void setMaximumPacketLength(int len)

Sets the maximum packet length

Parameters:

len - The maximum packet length

getMaximumPacketLength

public int getMaximumPacketLength()

Gets the maximum packet length

Returns:

The maximum packet length

setMinimumPacketLength

public void setMinimumPacketLength(int len)

Sets the minimum packet length

Parameters:

len - The minimum packet length

getMinimumPacketLength

public int getMinimumPacketLength()

Gets the minimum packet length

Returns:

The minimum packet length

setLineTerminatorChar

public void setLineTerminatorChar(int term)

Sets the line terminator character

Parameters:

term - The line terminator character

setLineTerminatorChar

public void setLineTerminatorChar(int[] term)

Sets the line terminator characters

Parameters:

term - The line terminator characters

getLineTerminatorChar

public int[] getLineTerminatorChar()

Gets the line terminator characters

Returns:

The line terminator characters

isLineTerminatorChar

public boolean isLineTerminatorChar(int ch)

Returns true if ch is a line terminator

Returns:

True if ch is a line terminator

setIncludePacketLineTerminator

public void setIncludePacketLineTerminator(boolean rtnTerm)

Sets whether the line terminator character should be included in the returned packets

Parameters:

rtnTerm - True to include the line terminator character in returned packets

getIncludePacketLineTerminator

public boolean getIncludePacketLineTerminator()

Returns True if the line terminator character should be included in the returned packet

Returns:

True if the line terminator character should be included in the returned packet

includePacketLineTerminator

public boolean includePacketLineTerminator()

Returns True if the line terminator character should be included in the returned packet

Returns:

True if the line terminator character should be included in the returned packet

setPacketTerminatorPattern

public void setPacketTerminatorPattern(byte[] pktTerm)

Sets the packet terminator pattern

Parameters:

pktTerm - The packet terminator pattern

getPacketTerminatorPattern

public byte[] getPacketTerminatorPattern()

Returns the packet terminator pattern

Returns:

The packet terminator pattern

setBackspaceChar

public void setBackspaceChar(int bs)

Sets the backspace character

Parameters:

bs - The backspace character

setBackspaceChar

public void setBackspaceChar(int[] bs)

Sets the backspace characters

Parameters:

bs - The backspace characters

getBackspaceChar

public int[] getBackspaceChar()

Gets the backspace characters

Returns:

The backspace characters

isBackspaceChar

public boolean isBackspaceChar(int ch)

Returns true if ch is a backspace character

Returns:

True if ch is a backspace character

setIgnoreChar

public void setIgnoreChar(int[] bs)

Sets the characters to ignore

Parameters:

bs - The characters to ignore

getIgnoreChar

public int[] getIgnoreChar()

Gets the characters to ignore

Returns:

The characters to ignore

isIgnoreChar

public boolean isIgnoreChar(int ch)

Returns true if ch is a character to ignore

Returns:

True if ch is a character to ignore

setAutoPrompt

public void setAutoPrompt(boolean auto)

If a default automatically generated prompt should be used [CHECK](all prompt related below)

Parameters:

auto - Ture if default automatic prompt should be used

setPrompt

public void setPrompt(byte[] prompt)

Sets the prompt for TCP connections

Parameters:

prompt - The prompt

setPrompt

public void setPrompt(java.lang.String prompt)

Sets the prompt for TCP connections

Parameters:

prompt - The prompt

getPrompt

protected byte[] getPrompt(int ndx)

Gets the prompt for a specified index

Parameters:

ndx - The index (used for auto prompt)

hasPrompt

public boolean hasPrompt()

If this server has a valid prompt

Returns:

True if this server has a valid prompt

setPromptEnabled

public void setPromptEnabled(boolean enable)

Sets the prompt enabled state

Parameters:

enable - True to enable prompt, false to disable

getPromptEnabled

public boolean getPromptEnabled()

Gets the prompt enabled state

Returns:

True to enable prompt, false to disable

getPromptIndex

protected int getPromptIndex()

Gets the current prompt index (used for auto prompt)

Returns:

The current prompt index

tcpWriteToSessionID

public boolean tcpWriteToSessionID(java.lang.String sessionID,
                                   byte[] data)

Find the named TCP session and write the specified bytes TCP output stream

Parameters:

sessionID - The session ID

data - The bytes to write

Returns:

True if the bytes were written, false otherwise

logActiveSessions

public boolean logActiveSessions(java.lang.String header,
                                 java.lang.StringBuffer asb)

Displays the active session list

Parameters:

header - The header to include on the list

asb - If non-null, writes the active session list to this StringBuffer. Otherwise to the current log file (using "Print.logInfo").

Returns:

True if at least one active session was found

logActiveSessions

public boolean logActiveSessions(java.lang.String header)

Displays the active session list to the current log file (using "Print.logInfo")

Parameters:

header - The header to include on the list

Returns:

True if at least one active session was found

sysPrintActiveSessions

public boolean sysPrintActiveSessions(java.lang.String header)

Prints the active session list to stdout

Parameters:

header - The header to include on the list

Returns:

True if at least one active session was found

sendDatagram

public static void sendDatagram(java.net.InetAddress host,
                                int port,
                                byte[] data)
                         throws java.io.IOException

Sends a datagram to the specified host:port

Parameters:

host - The destination host

port - The destination port

data - The data to send

Throws:

java.io.IOException - if an IO error occurs

sendDatagram

public static void sendDatagram(java.net.InetAddress bind,
                                java.net.InetAddress host,
                                int port,
                                byte[] data)
                         throws java.io.IOException

Sends a datagram to the specified host:port

Parameters:

bind - The local bind address

host - The destination host

port - The destination port

data - The data to send

Throws:

java.io.IOException - if an IO error occurs

main

public static void main(java.lang.String[] argv)