jist.swans.trans
Class TransUdp

java.lang.Object
  jist.swans.trans.TransUdp

All Implemented Interfaces:

JistAPI.Proxiable, JistAPI.Timeless, NetInterface.NetHandler, TransInterface, TransInterface.TransUdpInterface

public class TransUdp
extends java.lang.Object
implements TransInterface.TransUdpInterface

UDP implementation. Does not perform fragmentation.

Since:

SWANS1.0

Version:

$Id: TransUdp.java,v 1.30 2005/03/13 16:11:56 barr Exp $

Author:

Rimon Barr <barr+jist@cs.cornell.edu>

Nested Class Summary

static class

TransUdp.UdpMessage UDP packet structure.

Nested classes/interfaces inherited from interface jist.swans.trans.TransInterface

TransInterface.SocketHandler, TransInterface.TransMessage, TransInterface.TransTcpInterface, TransInterface.TransUdpInterface

Field Summary

private java.util.HashMap	handlers socket handlers.
static org.apache.log4j.Logger	log UDP logger.
private NetInterface	netEntity network layer entity.
private TransInterface.TransUdpInterface	self self-referencing proxy entity.

Constructor Summary

TransUdp()
Initialize UDP transport implementation.

Method Summary

void	addSocketHandler(int port, TransInterface.SocketHandler handler) Register socket handler.
void	delSocketHandler(int port) Unregister socket handler.
TransInterface.TransUdpInterface	getProxy() Return self-referencing proxy entity.
void	receive(Message msg, NetAddress src, MacAddress lastHop, byte macId, NetAddress dst, byte priority, byte ttl) Receive a message from network layer.
void	send(Message msg, NetAddress dst, int dstPort, int srcPort, byte priority) Send message (from APPLICATON).
void	setNetEntity(NetInterface netEntity) Set network layer entity.

Methods inherited from class java.lang.Object

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

Field Detail

log

public static final org.apache.log4j.Logger log

UDP logger.

netEntity

private NetInterface netEntity

network layer entity.

self

private TransInterface.TransUdpInterface self

self-referencing proxy entity.

handlers

private java.util.HashMap handlers

socket handlers.

Constructor Detail

TransUdp

public TransUdp()

Initialize UDP transport implementation.

Method Detail

getProxy

public TransInterface.TransUdpInterface getProxy()

Return self-referencing proxy entity.

Returns:

self-referencing proxy entity

setNetEntity

public void setNetEntity(NetInterface netEntity)

Set network layer entity.

Parameters:

netEntity - network layer entity

addSocketHandler

public void addSocketHandler(int port,
                             TransInterface.SocketHandler handler)

Register socket handler.

Specified by:

addSocketHandler in interface TransInterface

Parameters:

port - bound socket port

handler - callback handler

delSocketHandler

public void delSocketHandler(int port)

Unregister socket handler.

Specified by:

delSocketHandler in interface TransInterface

Parameters:

port - bound socket port

send

public void send(Message msg,
                 NetAddress dst,
                 int dstPort,
                 int srcPort,
                 byte priority)

Send message (from APPLICATON).

Specified by:

send in interface TransInterface

Parameters:

msg - packet payload (usually from application layer)

dst - packet destination address

dstPort - packet destination port

srcPort - packet source port

priority - packet priority

receive

public void receive(Message msg,
                    NetAddress src,
                    MacAddress lastHop,
                    byte macId,
                    NetAddress dst,
                    byte priority,
                    byte ttl)

Receive a message from network layer.

Specified by:

receive in interface NetInterface.NetHandler

Parameters:

msg - message received

src - source network address

lastHop - source link address

macId - incoming interface

dst - destination network address

priority - packet priority

ttl - packet time-to-live