org.apache.commons.net.tftp

Class TFTPAckPacket

java.lang.Object
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+--org.apache.commons.net.tftp.TFTPPacket
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   +--org.apache.commons.net.tftp.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 TFTPClient class receiveFile() and sendFile() methods.

Author:

Daniel F. Savarese

See Also:

TFTPPacket
TFTPPacketException
TFTP

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

int

getBlockNumber()

Returns the block number of the acknowledgement.

DatagramPacket

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.

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.

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.

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.

Returns:

A UDP datagram containing the TFTP acknowledgement packet.

setBlockNumber

public void setBlockNumber(int blockNumber)

Sets the block number of the acknowledgement. **

blockNumber