Package org.apache.commons.net.tftp

Class TFTPAckPacket

java.lang.Object

org.apache.commons.net.tftp.TFTPPacket

org.apache.commons.net.tftp.TFTPAckPacket

public final class TFTPAckPacket
extends TFTPPacket

A final class derived from TFTPPacket defining the TFTP Acknowledgement packet type.

Details regarding the TFTP protocol and the format of TFTP packets can be found in RFC 783. But the point of these classes is to keep you from having to worry about the internals. Additionally, only very few people should have to care about any of the TFTPPacket classes or derived classes. Almost all users should only be concerned with the TFTPClient class receiveFile() and sendFile() methods.

See Also:

• TFTPPacket
• TFTPPacketException
• TFTP

Field Summary

Fields inherited from class org.apache.commons.net.tftp.TFTPPacket

ACKNOWLEDGEMENT, DATA, ERROR, READ_REQUEST, SEGMENT_SIZE, WRITE_REQUEST

Constructor Summary

Constructors

Constructor	Description
TFTPAckPacket(InetAddress destination, int port, int blockNumber)	Creates an acknowledgment packet to be sent to a host at a given port acknowledging receipt of a block.

Method Summary

Modifier and Type	Method	Description
int	getBlockNumber()	Returns the block number of the acknowledgement.
DatagramPacket	newDatagram()	Creates a UDP datagram containing all the TFTP acknowledgement packet data in the proper format.
void	setBlockNumber(int blockNumber)	Sets the block number of the acknowledgement.
String	toString()	For debugging

Methods inherited from class org.apache.commons.net.tftp.TFTPPacket

getAddress, getPort, getType, newTFTPPacket, setAddress, setPort

Methods inherited from class java.lang.Object

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

Constructor Details

TFTPAckPacket

public TFTPAckPacket(InetAddress destination,
 int port,
 int blockNumber)

Creates an acknowledgment packet to be sent to a host at a given port acknowledging receipt of a block.

Parameters:

destination - The host to which the packet is going to be sent.

port - The port to which the packet is going to be sent.

blockNumber - The block number being acknowledged.

Method Details

getBlockNumber

public int getBlockNumber()

Returns the block number of the acknowledgement.

Returns:

The block number of the acknowledgement.

newDatagram

public DatagramPacket newDatagram()

Creates a UDP datagram containing all the TFTP acknowledgement packet data in the proper format. This is a method exposed to the programmer in case he wants to implement his own TFTP client instead of using the TFTPClient class. Under normal circumstances, you should not have a need to call this method.

Specified by:

newDatagram in class TFTPPacket

Returns:

A UDP datagram containing the TFTP acknowledgement packet.

setBlockNumber

public void setBlockNumber(int blockNumber)

Sets the block number of the acknowledgement.

Parameters:

blockNumber - the number to set

toString

public String toString()

For debugging

Overrides:

toString in class TFTPPacket

Since:

3.6