org.apache.commons.net.tftp

Class TFTPAckPacket

public final class TFTPAckPacket extends TFTPPacket

A final class derived from TFTPPacket definiing 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 {@link org.apache.commons.net.tftp.TFTPClient} class {@link org.apache.commons.net.tftp.TFTPClient#receiveFile receiveFile()} and {@link org.apache.commons.net.tftp.TFTPClient#sendFile sendFile()} methods.

Author: Daniel F. Savarese

See Also: TFTPPacket TFTPPacketException

Constructor Summary
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
intgetBlockNumber()
Returns the block number of the acknowledgement.
DatagramPacketnewDatagram()
Creates a UDP datagram containing all the TFTP acknowledgement packet data in the proper format.
voidsetBlockNumber(int blockNumber)
Sets the block number of the acknowledgement.

Constructor Detail

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 Detail

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 {@link org.apache.commons.net.tftp.TFTPClient} class. Under normal circumstances, you should not have a need to call this method.

Returns: A UDP datagram containing the TFTP acknowledgement packet.

setBlockNumber

public void setBlockNumber(int blockNumber)
Sets the block number of the acknowledgement. **