public abstract class TFTPRequestPacket extends TFTPPacket
TFTPReadRequestPacket
and
TFTPWriteRequestPacket
classes.
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.
Modifier and Type | Field and Description |
---|---|
private java.lang.String |
_filename
The filename of the request.
|
private int |
_mode
The transfer mode of the request.
|
private static byte[][] |
_modeBytes
A null terminated byte array representation of the ascii names of the
transfer mode constants.
|
(package private) static java.lang.String[] |
_modeStrings
An array containing the string names of the transfer modes and indexed
by the transfer mode constants.
|
_address, _port, _type, ACKNOWLEDGEMENT, DATA, ERROR, MIN_PACKET_SIZE, READ_REQUEST, SEGMENT_SIZE, WRITE_REQUEST
Constructor and Description |
---|
TFTPRequestPacket(java.net.InetAddress destination,
int port,
int type,
java.lang.String filename,
int mode)
Creates a request packet of a given type to be sent to a host at a
given port with a filename and transfer mode request.
|
TFTPRequestPacket(int type,
java.net.DatagramPacket datagram)
Creates a request packet of a given type based on a received
datagram.
|
Modifier and Type | Method and Description |
---|---|
(package private) java.net.DatagramPacket |
_newDatagram(java.net.DatagramPacket datagram,
byte[] data)
This is a method only available within the package for
implementing efficient datagram transport by elminating buffering.
|
java.lang.String |
getFilename()
Returns the requested filename.
|
int |
getMode()
Returns the transfer mode of the request.
|
java.net.DatagramPacket |
newDatagram()
Creates a UDP datagram containing all the TFTP
request packet data in the proper format.
|
getAddress, getPort, getType, newTFTPPacket, setAddress, setPort, toString
static final java.lang.String[] _modeStrings
private static final byte[][] _modeBytes
private final int _mode
private final java.lang.String _filename
TFTPRequestPacket(java.net.InetAddress destination, int port, int type, java.lang.String filename, int mode)
destination
- The host to which the packet is going to be sent.port
- The port to which the packet is going to be sent.type
- The type of the request (either TFTPPacket.READ_REQUEST or
TFTPPacket.WRITE_REQUEST).filename
- The requested filename.mode
- The requested transfer mode. This should be on of the TFTP
class MODE constants (e.g., TFTP.NETASCII_MODE).TFTPRequestPacket(int type, java.net.DatagramPacket datagram) throws TFTPPacketException
type
- The type of the request (either TFTPPacket.READ_REQUEST or
TFTPPacket.WRITE_REQUEST).datagram
- The datagram containing the received request.TFTPPacketException
- If the datagram isn't a valid TFTP
request packet of the appropriate type.final java.net.DatagramPacket _newDatagram(java.net.DatagramPacket datagram, byte[] data)
_newDatagram
in class TFTPPacket
datagram
- The datagram to create.data
- The buffer to store the packet and to use in the datagram.public final java.net.DatagramPacket newDatagram()
TFTPClient
class. Under normal circumstances, you should not have a need to call
this method.newDatagram
in class TFTPPacket
public final int getMode()
public final java.lang.String getFilename()