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Java Source Code / Java Documentation » Net » JGroups 2.4.1 sp3 » org.jgroups.protocols

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

java.lang .Thread

org.jgroups.stack .UpHandler

org.jgroups.protocols .TUNNEL

TUNNEL
public class TUNNEL extends Protocol implements Runnable(Code)
	Replacement for UDP. Instead of sending packets via UDP, a TCP connection is opened to a Router (using the RouterStub client-side stub), the IP address/port of which was given using channel properties `router_host` and `router_port`. All outgoing traffic is sent via this TCP socket to the Router which distributes it to all connected TUNNELs in this group. Incoming traffic received from Router will simply be passed up the stack. A TUNNEL layer can be used to penetrate a firewall, most firewalls allow creating TCP connections to the outside world, however, they do not permit outside hosts to initiate a TCP connection to a host inside the firewall. Therefore, the connection created by the inside host is reused by Router to send traffic from an outside host to a host inside the firewall. author: Bela Ban

Field Summary
byte[]	additional_data If set it will be added to `local_addr`.
InetAddress	bind_addr
String	channel_name
Address	local_addr
boolean	loopback If true, messages sent to self are treated specially: unicast messages are looped back immediately, multicast messages get a local copy first and - when the real copy arrives - it will be discarded.
final Vector	members
final Properties	properties
Thread	receiver
long	reconnect_interval
String	router_host
int	router_port
RouterStub	stub

Constructor Summary
public	TUNNEL()

Method Summary
void	createTunnel()
public void	down(Event evt) Caller by the layer above this layer.
public String	getName()
public RouterStub	getRouterStub()
void	handleConfigEvent(HashMap map)
void	handleDownEvent(Event evt)
public void	handleIncomingMessage(Message msg)
public void	init()
public boolean	isConnected()
public void	run()
public boolean	setProperties(Properties props)
public void	start()
public void	startUpHandler() This prevents the up-handler thread to be created, which essentially is superfluous: messages are received from the network rather than from a layer below.
public void	stop()
void	teardownTunnel()
public String	toString()

Field Detail

additional_data
byte[] additional_data(Code)
	If set it will be added to `local_addr`. Used to implement for example transport independent addresses

bind_addr
InetAddress bind_addr(Code)

channel_name
String channel_name(Code)

local_addr
Address local_addr(Code)

loopback
boolean loopback(Code)
	If true, messages sent to self are treated specially: unicast messages are looped back immediately, multicast messages get a local copy first and - when the real copy arrives - it will be discarded. Useful for Window media (non)sense

members
final Vector members(Code)

properties
final Properties properties(Code)

receiver
Thread receiver(Code)

reconnect_interval
long reconnect_interval(Code)
	time to wait in ms between reconnect attempts

router_host
String router_host(Code)

router_port
int router_port(Code)

stub
RouterStub stub(Code)

Constructor Detail

TUNNEL
public TUNNEL()(Code)

Method Detail

createTunnel
void createTunnel() throws Exception(Code)
	Creates a TCP connection to the router

down
public void down(Event evt)(Code)
	Caller by the layer above this layer. We just pass it on to the router.

getName
public String getName()(Code)

getRouterStub
public RouterStub getRouterStub()(Code)

handleConfigEvent
void handleConfigEvent(HashMap map)(Code)

handleDownEvent
void handleDownEvent(Event evt)(Code)

handleIncomingMessage
public void handleIncomingMessage(Message msg)(Code)

init
public void init() throws Exception(Code)

isConnected
public boolean isConnected()(Code)

run
public void run()(Code)

setProperties
public boolean setProperties(Properties props)(Code)
	Setup the Protocol instance acording to the configuration string

start
public void start() throws Exception(Code)

startUpHandler
public void startUpHandler()(Code)
	This prevents the up-handler thread to be created, which essentially is superfluous: messages are received from the network rather than from a layer below. DON'T REMOVE !

stop
public void stop()(Code)

teardownTunnel
void teardownTunnel()(Code)
	Tears the TCP connection to the router down

toString
public String toString()(Code)

Fields inherited from org.jgroups.stack.UpHandler

final protected Log log(Code)(Java Doc)

Methods inherited from org.jgroups.stack.UpHandler

public void run()(Code)(Java Doc)
public void setObserver(ProtocolObserver observer)(Code)(Java Doc)

Fields inherited from java.lang.Thread

final public static int MAX_PRIORITY(Code)(Java Doc)
final public static int MIN_PRIORITY(Code)(Java Doc)
final public static int NORM_PRIORITY(Code)(Java Doc)

Methods inherited from java.lang.Thread

public static int activeCount()(Code)(Java Doc)
final public void checkAccess()(Code)(Java Doc)
native public int countStackFrames()(Code)(Java Doc)
native public static Thread currentThread()(Code)(Java Doc)
public void destroy()(Code)(Java Doc)
public static void dumpStack()(Code)(Java Doc)
public static int enumerate(Thread tarray)(Code)(Java Doc)
public static Map<Thread, StackTraceElement[]> getAllStackTraces()(Code)(Java Doc)
public ClassLoader getContextClassLoader()(Code)(Java Doc)
public static UncaughtExceptionHandler getDefaultUncaughtExceptionHandler()(Code)(Java Doc)
public long getId()(Code)(Java Doc)
final public String getName()(Code)(Java Doc)
final public int getPriority()(Code)(Java Doc)
public StackTraceElement[] getStackTrace()(Code)(Java Doc)
public State getState()(Code)(Java Doc)
final public ThreadGroup getThreadGroup()(Code)(Java Doc)
public UncaughtExceptionHandler getUncaughtExceptionHandler()(Code)(Java Doc)
native public static boolean holdsLock(Object obj)(Code)(Java Doc)
public void interrupt()(Code)(Java Doc)
public static boolean interrupted()(Code)(Java Doc)
final native public boolean isAlive()(Code)(Java Doc)
final public boolean isDaemon()(Code)(Java Doc)
public boolean isInterrupted()(Code)(Java Doc)
final public synchronized void join(long millis) throws InterruptedException(Code)(Java Doc)
final public synchronized void join(long millis, int nanos) throws InterruptedException(Code)(Java Doc)
final public void join() throws InterruptedException(Code)(Java Doc)
final public void resume()(Code)(Java Doc)
public void run()(Code)(Java Doc)
public void setContextClassLoader(ClassLoader cl)(Code)(Java Doc)
final public void setDaemon(boolean on)(Code)(Java Doc)
public static void setDefaultUncaughtExceptionHandler(UncaughtExceptionHandler eh)(Code)(Java Doc)
final public void setName(String name)(Code)(Java Doc)
final public void setPriority(int newPriority)(Code)(Java Doc)
public void setUncaughtExceptionHandler(UncaughtExceptionHandler eh)(Code)(Java Doc)
native public static void sleep(long millis) throws InterruptedException(Code)(Java Doc)
public static void sleep(long millis, int nanos) throws InterruptedException(Code)(Java Doc)
public synchronized void start()(Code)(Java Doc)
final public void stop()(Code)(Java Doc)
final public synchronized void stop(Throwable obj)(Code)(Java Doc)
final public void suspend()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
native public static void yield()(Code)(Java Doc)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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