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## 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 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`

Field Summary

Fields inherited from class org.apache.commons.net.tftp.TFTPPacket
`ACKNOWLEDGEMENT, DATA, ERROR, READ_REQUEST, SEGMENT_SIZE, WRITE_REQUEST`

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` | `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.

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, toString, wait, wait, wait`

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

### 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.

### getBlockNumber

    public int getBlockNumber()

  Returns the block number of the acknowledgement.

  Returns:
    The block number of the acknowledgement.

### setBlockNumber

    public void setBlockNumber(int blockNumber)

  Sets the block number of the acknowledgement.

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