net.clackrouter.protocol
Class VNSProtocolManager

java.lang.Object
  java.lang.Thread
      net.clackrouter.protocol.VNSProtocolManager

All Implemented Interfaces:

java.lang.Runnable

public class VNSProtocolManager
extends java.lang.Thread

Establishes a connection with VNS server, receives packets and propagates them to the Clack Client. Also receives packets from the Clack Client and sends them to the VNS server.

Nested Class Summary

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

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

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

VNSProtocolManager(java.lang.String server, int port)

Method Summary

VNSClose	checkForVNSCloseCommand() Performs a test to see if the VNS server is sending us a CLOSE command.
void	connect(java.lang.String server, int port) Establish a connection to the VNS server for this protocol manager
void	disconnectFromVNS() Signals the protocol manager to exit
void	doAuth(java.lang.String username, java.lang.String auth_key)
VNSData	getData() Supplies the next data chunk from the VNS server
VNSHWInfo	getHardwareInfo() Loops until it receives the hardware information from the VNS server about this ProtocolManager's host.
java.lang.String	getHostName()
int	getPort()
java.lang.String	getServer()
int	getTopology()
boolean	isConnected() Tests that the protocol manager is still connected to the VNS server
void	run() Main processing loop for the ProtocolManager thread This is simply a loop in which the ProtocolManager checks if it has been told to stop, then sleeps, then both tries to read a single command from the server and send one command from its outgoing queue.
void	sendData(VNSData data) Send data to the VNS server (currently supports only Packet data)
void	sendOpenCommand(short topologyID, java.lang.String virtualRouterID, java.lang.String username) Sends an OPEN command to the VNS server to initiate a session
void	setRouter(Router r)

Methods inherited from class java.lang.Thread

activeCount, checkAccess, 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, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

VNSProtocolManager

public VNSProtocolManager(java.lang.String server,
                          int port)
                   throws java.lang.Exception

Throws:

java.lang.Exception

Method Detail

connect

public void connect(java.lang.String server,
                    int port)
             throws java.lang.Exception

Establish a connection to the VNS server for this protocol manager

Parameters:

server - server to connect to

port - port to connect to

Throws:

java.lang.Exception

run

public void run()

Main processing loop for the ProtocolManager thread This is simply a loop in which the ProtocolManager checks if it has been told to stop, then sleeps, then both tries to read a single command from the server and send one command from its outgoing queue. Note that both incoming and outgoing queues are accessed asynchronously by the Router.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

isConnected

public boolean isConnected()

Tests that the protocol manager is still connected to the VNS server

disconnectFromVNS

public void disconnectFromVNS()

Signals the protocol manager to exit

getHardwareInfo

public VNSHWInfo getHardwareInfo()
                          throws java.lang.Exception

Loops until it receives the hardware information from the VNS server about this ProtocolManager's host.

Throws:

java.lang.Exception

doAuth

public void doAuth(java.lang.String username,
                   java.lang.String auth_key)
            throws java.lang.Exception

Throws:

java.lang.Exception

sendOpenCommand

public void sendOpenCommand(short topologyID,
                            java.lang.String virtualRouterID,
                            java.lang.String username)
                     throws java.lang.Exception

Sends an OPEN command to the VNS server to initiate a session

Throws:

java.lang.Exception

getData

public VNSData getData()
                throws java.lang.Exception

Supplies the next data chunk from the VNS server

Throws:

java.lang.Exception

checkForVNSCloseCommand

public VNSClose checkForVNSCloseCommand()
                                 throws java.lang.Exception

Performs a test to see if the VNS server is sending us a CLOSE command.

Throws:

java.lang.Exception

sendData

public void sendData(VNSData data)
              throws java.lang.Exception

Send data to the VNS server (currently supports only Packet data)

Throws:

java.lang.Exception

setRouter

public void setRouter(Router r)

getTopology

public int getTopology()

getHostName

public java.lang.String getHostName()

getPort

public int getPort()

getServer

public java.lang.String getServer()