public abstract class TFTPPacket extends Object
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.
TFTPPacketException
,
TFTP
Modifier and Type | Field and Description |
---|---|
static int |
ACKNOWLEDGEMENT
This is the actual TFTP spec identifier and is equal to 4.
|
static int |
DATA
This is the actual TFTP spec identifier and is equal to 3.
|
static int |
ERROR
This is the actual TFTP spec identifier and is equal to 5.
|
static int |
READ_REQUEST
This is the actual TFTP spec identifier and is equal to 1.
|
static int |
SEGMENT_SIZE
The TFTP data packet maximum segment size in bytes.
|
static int |
WRITE_REQUEST
This is the actual TFTP spec identifier and is equal to 2.
|
Modifier and Type | Method and Description |
---|---|
InetAddress |
getAddress()
Returns the address of the host where the packet is going to be sent or where it came from.
|
int |
getPort()
Returns the port where the packet is going to be sent or where it came from.
|
int |
getType()
Returns the type of the packet.
|
abstract DatagramPacket |
newDatagram()
Creates a UDP datagram containing all the TFTP packet data in the proper format.
|
static TFTPPacket |
newTFTPPacket(DatagramPacket datagram)
When you receive a datagram that you expect to be a TFTP packet, you use this factory method to create the proper TFTPPacket object encapsulating the
data contained in that datagram.
|
void |
setAddress(InetAddress address)
Sets the host address where the packet is going to be sent.
|
void |
setPort(int port)
Sets the port where the packet is going to be sent.
|
String |
toString()
For debugging
|
public static final int READ_REQUEST
getType()
indicating a read request packet.public static final int WRITE_REQUEST
getType()
indicating a write request packet.public static final int DATA
getType()
indicating a data packet.public static final int ACKNOWLEDGEMENT
getType()
indicating an acknowledgement packet.public static final int ERROR
getType()
indicating an error packet.public static final int SEGMENT_SIZE
TFTP
class methods to implement their own TFTP servers or clients.public static final TFTPPacket newTFTPPacket(DatagramPacket datagram) throws TFTPPacketException
datagram
- The datagram containing a TFTP packet.TFTPPacketException
- If the datagram does not contain a valid TFTP packet.public final InetAddress getAddress()
public final int getPort()
public final int getType()
public abstract DatagramPacket newDatagram()
TFTPClient
class. Under normal circumstances, you should not
have a need to call this method.public final void setAddress(InetAddress address)
address
- the address to setpublic final void setPort(int port)
port
- the port to setCopyright © 2001–2022 The Apache Software Foundation. All rights reserved.