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java.lang.Object | +--org.apache.commons.net.tftp.TFTPPacket | +--org.apache.commons.net.tftp.TFTPAckPacket
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.
TFTPPacket
,
TFTPPacketException
,
TFTP
Field Summary | |
---|---|
(package private) int |
_blockNumber
The block number being acknowledged by the packet. |
Fields inherited from class org.apache.commons.net.tftp.TFTPPacket |
---|
_address, _port, _type, ACKNOWLEDGEMENT, DATA, ERROR, MIN_PACKET_SIZE, READ_REQUEST, SEGMENT_SIZE, WRITE_REQUEST |
Constructor Summary | |
---|---|
(package private) |
TFTPAckPacket(java.net.DatagramPacket datagram)
Creates an acknowledgement packet based from a received datagram. |
|
TFTPAckPacket(java.net.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 | |
---|---|
(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. |
int |
getBlockNumber()
Returns the block number of the acknowledgement. |
java.net.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 |
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getAddress, getPort, getType, newTFTPPacket, setAddress, setPort |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
int _blockNumber
Constructor Detail |
public TFTPAckPacket(java.net.InetAddress destination, int port, int blockNumber)
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.TFTPAckPacket(java.net.DatagramPacket datagram) throws TFTPPacketException
datagram
- The datagram containing the received acknowledgement.
TFTPPacketException
- If the datagram isn't a valid TFTP
acknowledgement packet.Method Detail |
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 java.net.DatagramPacket newDatagram()
newDatagram
in class TFTPPacket
public int getBlockNumber()
public void setBlockNumber(int blockNumber)
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