com.github.alei121.rawsocketspi

Class RawSocket

java.lang.Object

com.github.alei121.rawsocketspi.RawSocket

All Implemented Interfaces:

Closeable, AutoCloseable, ByteChannel, Channel, GatheringByteChannel, ReadableByteChannel, WritableByteChannel

public class RawSocket
extends Object
implements ByteChannel, GatheringByteChannel

This interacts with the native code, supporting the basic open/close and read/write.

Author:

Alan Lei

Constructor Summary

Constructors

Constructor and Description
RawSocket()

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
byte[]	getHardwareAddress()
static String[]	getInterfaceNames() This method calls native code to get all interface names.
boolean	isOpen()
static void	nativeClose(int sd)
static int	nativeGetHardwareAddress(int sd, ByteBuffer bb)
static String[]	nativeGetInterfaceNames()
static void	nativeInit()
static int	nativeOpen(String ifName)
static int	nativeRead(int sd, ByteBuffer bb, int offset, int length)
static int	nativeWrite(int sd, ByteBuffer bb, int offset, int length)
void	open(String ifName)
int	read(ByteBuffer bb)
long	read(ByteBuffer[] bbs, int offset, int length)
String	toString()
int	write(ByteBuffer bb)
long	write(ByteBuffer[] bbs)
long	write(ByteBuffer[] bbs, int offset, int length)

Methods inherited from class java.lang.Object

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

Constructor Detail

RawSocket

public RawSocket()
          throws IOException

Throws:

IOException

Method Detail

nativeInit

public static void nativeInit()

nativeOpen

public static int nativeOpen(String ifName)

nativeClose

public static void nativeClose(int sd)

nativeRead

public static int nativeRead(int sd,
             ByteBuffer bb,
             int offset,
             int length)

nativeWrite

public static int nativeWrite(int sd,
              ByteBuffer bb,
              int offset,
              int length)

nativeGetInterfaceNames

public static String[] nativeGetInterfaceNames()

nativeGetHardwareAddress

public static int nativeGetHardwareAddress(int sd,
                           ByteBuffer bb)

open

public void open(String ifName)
          throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Channel

Throws:

IOException

read

public int read(ByteBuffer bb)
         throws IOException

Specified by:

read in interface ReadableByteChannel

Throws:

IOException

read

public long read(ByteBuffer[] bbs,
        int offset,
        int length)
          throws IOException

Throws:

IOException

write

public int write(ByteBuffer bb)
          throws IOException

Specified by:

write in interface WritableByteChannel

Throws:

IOException

isOpen

public boolean isOpen()

Specified by:

isOpen in interface Channel

write

public long write(ByteBuffer[] bbs)
           throws IOException

Specified by:

write in interface GatheringByteChannel

Throws:

IOException

write

public long write(ByteBuffer[] bbs,
         int offset,
         int length)
           throws IOException

Specified by:

write in interface GatheringByteChannel

Throws:

IOException

getHardwareAddress

public byte[] getHardwareAddress()

toString

public String toString()

Overrides:

toString in class Object

getInterfaceNames

public static String[] getInterfaceNames()

This method calls native code to get all interface names. Note that NetworkInterface from Java API does not yield all interfaces, but only those configured with ip address.

Returns:

Names of interfaces available