example
Class Ping.Pinger

java.lang.Object
  example.Ping.Pinger

Direct Known Subclasses:

Ping.PingerIPv6

Enclosing class:

Ping

public static class Ping.Pinger
extends java.lang.Object

Field Summary

protected int	dataOffset
protected int	identifier
protected int	length
protected Ping.EchoReplyListener	listener
protected int	offset
protected byte[]	recvData
protected org.savarese.vserv.tcpip.ICMPEchoPacket	recvPacket
protected int	replyType
protected int	requestType
protected byte[]	sendData
protected org.savarese.vserv.tcpip.ICMPEchoPacket	sendPacket
protected int	sequence
protected RawSocket	socket
protected byte[]	srcAddress

Constructor Summary

	Ping.Pinger(int id)
protected	Ping.Pinger(int id, int protocolFamily, int protocol)

Method Summary

void	close() Closes the raw socket opened by the constructor.
protected void	computeSendChecksum(java.net.InetAddress host)
int	getRequestDataLength()
int	getRequestPacketLength()
long	ping(java.net.InetAddress host) Issues a synchronous ping.
void	receive()
void	receiveEchoReply()
void	sendEchoRequest(java.net.InetAddress host)
void	setEchoReplyListener(Ping.EchoReplyListener l)

Methods inherited from class java.lang.Object

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

Field Detail

socket

protected RawSocket socket

sendPacket

protected org.savarese.vserv.tcpip.ICMPEchoPacket sendPacket

recvPacket

protected org.savarese.vserv.tcpip.ICMPEchoPacket recvPacket

offset

protected int offset

length

protected int length

dataOffset

protected int dataOffset

requestType

protected int requestType

replyType

protected int replyType

sendData

protected byte[] sendData

recvData

protected byte[] recvData

srcAddress

protected byte[] srcAddress

sequence

protected int sequence

identifier

protected int identifier

listener

protected Ping.EchoReplyListener listener

Constructor Detail

Ping.Pinger

protected Ping.Pinger(int id,
                      int protocolFamily,
                      int protocol)
               throws java.io.IOException

Throws:

java.io.IOException

Ping.Pinger

public Ping.Pinger(int id)
            throws java.io.IOException

Throws:

java.io.IOException

Method Detail

computeSendChecksum

protected void computeSendChecksum(java.net.InetAddress host)
                            throws java.io.IOException

Throws:

java.io.IOException

setEchoReplyListener

public void setEchoReplyListener(Ping.EchoReplyListener l)

close

public void close()
           throws java.io.IOException

Closes the raw socket opened by the constructor. After calling this method, the object cannot be used.

Throws:

java.io.IOException

sendEchoRequest

public void sendEchoRequest(java.net.InetAddress host)
                     throws java.io.IOException

Throws:

java.io.IOException

receive

public void receive()
             throws java.io.IOException

Throws:

java.io.IOException

receiveEchoReply

public void receiveEchoReply()
                      throws java.io.IOException

Throws:

java.io.IOException

ping

public long ping(java.net.InetAddress host)
          throws java.io.IOException

Issues a synchronous ping.

Parameters:

host - The host to ping.

Returns:

The round trip time in nanoseconds.

Throws:

java.io.IOException

getRequestDataLength

public int getRequestDataLength()

Returns:

The number of bytes in the data portion of the ICMP ping request packet.

getRequestPacketLength

public int getRequestPacketLength()

Returns:

The number of bytes in the entire IP ping request packet.