local.net
Class KeepAliveUdp

java.lang.Object
  |
  +--java.lang.Thread
        |
        +--local.net.KeepAliveUdp

All Implemented Interfaces:

java.lang.Runnable

Direct Known Subclasses:

KeepAliveSip

public class KeepAliveUdp

extends java.lang.Thread

KeepAliveUdp thread, for keeping the connection up toward a target node (e.g. toward the seriving proxy/gw or a remote UA). It periodically sends keep-alive tokens in order to refresh NAT UDP session timeouts.

It can be used for both signaling (SIP) or data plane (RTP/UDP).

Field Summary

protected long	delta_time Time between two keep-alive tokens [millisecs]
protected org.zoolu.net.SocketAddress	target Destination socket address (e.g. the registrar server)

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

protected	KeepAliveUdp(org.zoolu.net.SocketAddress target, long delta_time) Creates a new KeepAliveUdp daemon
	KeepAliveUdp(org.zoolu.net.UdpSocket udp_socket, org.zoolu.net.SocketAddress target, long delta_time) Creates a new KeepAliveUdp daemon
	KeepAliveUdp(org.zoolu.net.UdpSocket udp_socket, org.zoolu.net.SocketAddress target, org.zoolu.net.UdpPacket udp_packet, long delta_time) Creates a new KeepAliveUdp daemon

Method Summary

long	getDeltaTime() Gets the time (in milliseconds) between two keep-alive tokens
org.zoolu.net.SocketAddress	getDestSoAddress() Gets the destination SocketAddress
void	halt() Stops sending keep-alive tokens
boolean	isRunning() Whether the UDP relay is running
void	run() Main thread.
void	sendToken() Sends the kepp-alive packet now.
void	setDeltaTime(long delta_time) Sets the time (in milliseconds) between two keep-alive tokens
void	setDestSoAddress(org.zoolu.net.SocketAddress soaddr) Sets the destination SocketAddress
void	setExpirationTime(long time) Sets the expiration time (in milliseconds)
java.lang.String	toString() Gets a String representation of the Object

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getName, getPriority, getThreadGroup, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setName, setPriority, sleep, sleep, start, stop, stop, suspend, yield

Methods inherited from class java.lang.Object

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

Field Detail

target

protected org.zoolu.net.SocketAddress target

Destination socket address (e.g. the registrar server)

delta_time

protected long delta_time

Time between two keep-alive tokens [millisecs]

Constructor Detail

KeepAliveUdp

protected KeepAliveUdp(org.zoolu.net.SocketAddress target,
                       long delta_time)

Creates a new KeepAliveUdp daemon

KeepAliveUdp

public KeepAliveUdp(org.zoolu.net.UdpSocket udp_socket,
                    org.zoolu.net.SocketAddress target,
                    long delta_time)

Creates a new KeepAliveUdp daemon

KeepAliveUdp

public KeepAliveUdp(org.zoolu.net.UdpSocket udp_socket,
                    org.zoolu.net.SocketAddress target,
                    org.zoolu.net.UdpPacket udp_packet,
                    long delta_time)

Creates a new KeepAliveUdp daemon

Method Detail

isRunning

public boolean isRunning()

Whether the UDP relay is running

setDeltaTime

public void setDeltaTime(long delta_time)

Sets the time (in milliseconds) between two keep-alive tokens

getDeltaTime

public long getDeltaTime()

Gets the time (in milliseconds) between two keep-alive tokens

setDestSoAddress

public void setDestSoAddress(org.zoolu.net.SocketAddress soaddr)

Sets the destination SocketAddress

getDestSoAddress

public org.zoolu.net.SocketAddress getDestSoAddress()

Gets the destination SocketAddress

setExpirationTime

public void setExpirationTime(long time)

Sets the expiration time (in milliseconds)

halt

public void halt()

Stops sending keep-alive tokens

sendToken

public void sendToken()
               throws java.io.IOException

Sends the kepp-alive packet now.

run

public void run()

Main thread.

Overrides:

run in class java.lang.Thread

toString

public java.lang.String toString()

Gets a String representation of the Object

Overrides:

toString in class java.lang.Thread