wifi

Class CppGUIAdapter

java.lang.Object

wifi.CppGUIAdapter

All Implemented Interfaces:

GUIClientInterface

public class CppGUIAdapter
extends java.lang.Object
implements GUIClientInterface

This class acts as a thin layer between the GUI client application and the C++-based 802.11~ layer. See GUIClientInterface for full descriptions of these routines.

Author:

richards

Constructor Summary

Constructors

Constructor and Description
CppGUIAdapter()

Method Summary

Modifier and Type	Method and Description
short[]	getDefaultAddrs() Returns an array of MAC addresses to be associated with the send buttons in the GUI.
int	initializeLinkLayer(short MACaddr) Create an instance of the 802.11~ layer and set up the output streams.
byte[]	pollForStreamOutput() Called periodically by the GUI client to see if the 802.11~ layer has produced any output that should be displayed in the client's text window.
int	sendCommand(int command, int value) The GUI calls this when the user asks to pass command info to the 802.11~ layer.
int	sendOutgoingData(short dest, byte[] payload) Called by the GUI client when data is to be sent.
byte[]	watchForIncomingData() This is a wrapper around 802_recv that watches for incoming packets, then prepends the srcAddr to the incoming data and returns it as a Java byte array.

Methods inherited from class java.lang.Object

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

Constructor Detail

CppGUIAdapter

public CppGUIAdapter()

Method Detail

getDefaultAddrs

public short[] getDefaultAddrs()

Returns an array of MAC addresses to be associated with the send buttons in the GUI. (The first of these addresses is associated with the second button, since the first button always defaults to the broadcast address.)

Specified by:

getDefaultAddrs in interface GUIClientInterface

initializeLinkLayer

public int initializeLinkLayer(short MACaddr)

Description copied from interface: GUIClientInterface

Create an instance of the 802.11~ layer and set up the output streams.

Specified by:

initializeLinkLayer in interface GUIClientInterface

Parameters:

MACaddr - The 802.11~ MAC address of this host.

Returns:

Result code (0 if all goes well).

watchForIncomingData

public byte[] watchForIncomingData()

This is a wrapper around 802_recv that watches for incoming packets, then prepends the srcAddr to the incoming data and returns it as a Java byte array.

Specified by:

watchForIncomingData in interface GUIClientInterface

sendOutgoingData

public int sendOutgoingData(short dest,
                            byte[] payload)

Description copied from interface: GUIClientInterface

Called by the GUI client when data is to be sent.

Specified by:

sendOutgoingData in interface GUIClientInterface

Parameters:

dest - MAC address of destination machine

payload - Data to be sent

Returns:

Number of bytes sent

pollForStreamOutput

public byte[] pollForStreamOutput()

Description copied from interface: GUIClientInterface

Called periodically by the GUI client to see if the 802.11~ layer has produced any output that should be displayed in the client's text window.

Specified by:

pollForStreamOutput in interface GUIClientInterface

Returns:

Array of characters to be displayed

sendCommand

public int sendCommand(int command,
                       int value)

Description copied from interface: GUIClientInterface

The GUI calls this when the user asks to pass command info to the 802.11~ layer.

Specified by:

sendCommand in interface GUIClientInterface

Parameters:

command - Specifies the command to send

value - The value passed with the command