Package org.apache.commons.net.tftp

# Class TFTPErrorPacket

java.lang.Object
org.apache.commons.net.tftp.TFTPPacket
org.apache.commons.net.tftp.TFTPErrorPacket

public final class TFTPErrorPacket extends TFTPPacket
A final class derived from TFTPPacket defining the TFTP Error 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
  Modifier and Type
  Field
  Description
  `static final int`
  `ACCESS_VIOLATION`
  The access violation error code according to RFC 783, value 2.
  `static final int`
  `FILE_EXISTS`
  The file already exists error code according to RFC 783, value 6.
  `static final int`
  `FILE_NOT_FOUND`
  The file not found error code according to RFC 783, value 1.
  `static final int`
  `ILLEGAL_OPERATION`
  The illegal TFTP operation error code according to RFC 783, value 4.
  `static final int`
  `NO_SUCH_USER`
  The no such user error code according to RFC 783, value 7.
  `static final int`
  `OUT_OF_SPACE`
  The disk full error code according to RFC 783, value 3.
  `static final int`
  `UNDEFINED`
  The undefined error code according to RFC 783, value 0.
  `static final int`
  `UNKNOWN_TID`
  The unknown transfer id error code according to RFC 783, value 5.

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

  `ACKNOWLEDGEMENT, DATA, ERROR, READ_REQUEST, SEGMENT_SIZE, WRITE_REQUEST`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `TFTPErrorPacket(InetAddress destination, int port, int error, String message)`
  Creates an error packet to be sent to a host at a given port with an error code and error message.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `int`
  `getError()`
  Returns the error code of the packet.
  `String`
  `getMessage()`
  Returns the error message of the packet.
  `DatagramPacket`
  `newDatagram()`
  Creates a UDP datagram containing all the TFTP error packet data in the proper format.
  `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`

- ## Field Details

  - ### UNDEFINED

    public static final int UNDEFINED
    The undefined error code according to RFC 783, value 0.
    See Also:
      - Constant Field Values

  - ### FILE_NOT_FOUND

    public static final int FILE_NOT_FOUND
    The file not found error code according to RFC 783, value 1.
    See Also:
      - Constant Field Values

  - ### ACCESS_VIOLATION

    public static final int ACCESS_VIOLATION
    The access violation error code according to RFC 783, value 2.
    See Also:
      - Constant Field Values

  - ### OUT_OF_SPACE

    public static final int OUT_OF_SPACE
    The disk full error code according to RFC 783, value 3.
    See Also:
      - Constant Field Values

  - ### ILLEGAL_OPERATION

    public static final int ILLEGAL_OPERATION
    The illegal TFTP operation error code according to RFC 783, value 4.
    See Also:
      - Constant Field Values

  - ### UNKNOWN_TID

    public static final int UNKNOWN_TID
    The unknown transfer id error code according to RFC 783, value 5.
    See Also:
      - Constant Field Values

  - ### FILE_EXISTS

    public static final int FILE_EXISTS
    The file already exists error code according to RFC 783, value 6.
    See Also:
      - Constant Field Values

  - ### NO_SUCH_USER

    public static final int NO_SUCH_USER
    The no such user error code according to RFC 783, value 7.
    See Also:
      - Constant Field Values

- ## Constructor Details

  - ### TFTPErrorPacket

    public TFTPErrorPacket(InetAddress destination, int port, int error, String message)
    Creates an error packet to be sent to a host at a given port with an error code and error message.
    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.
      `error` - The error code of the packet.
      `message` - The error message of the packet.

- ## Method Details

  - ### getError

    public int getError()
    Returns the error code of the packet.
    Returns:
      The error code of the packet.

  - ### getMessage

    public String getMessage()
    Returns the error message of the packet.
    Returns:
      The error message of the packet.

  - ### newDatagram

    public DatagramPacket newDatagram()
    Creates a UDP datagram containing all the TFTP error 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 error packet.

  - ### toString

    public String toString()
    For debugging
    Overrides:
      `toString` in class `TFTPPacket`
    Since:
      3.6