Package org.apache.commons.net.discard

Class DiscardUDPClient

java.lang.Object

org.apache.commons.net.DatagramSocketClient

org.apache.commons.net.discard.DiscardUDPClient

All Implemented Interfaces:

AutoCloseable

Direct Known Subclasses:

EchoUDPClient

public class DiscardUDPClient
extends DatagramSocketClient

The DiscardUDPClient class is a UDP implementation of a client for the Discard protocol described in RFC 863. To use the class, just open a local UDP port with open and call send to send datagrams to the server After you're done sending discard data, call close() to clean up properly.

See Also:

• DiscardTCPClient

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_PORT	The default discard port.

Fields inherited from class org.apache.commons.net.DatagramSocketClient

_isOpen_, _socket_, _socketFactory_, _timeout_

Constructor Summary

Constructors

Constructor	Description
DiscardUDPClient()

Method Summary

Modifier and Type	Method	Description
void	send(byte[] data, int length, InetAddress host)	Same as send(data, length, host.

Methods inherited from class org.apache.commons.net.DatagramSocketClient

checkOpen, close, getCharset, getCharsetName, getDefaultTimeout, getLocalAddress, getLocalPort, getSoTimeout, getSoTimeoutDuration, isOpen, open, open, open, setCharset, setDatagramSocketFactory, setDefaultTimeout, setDefaultTimeout, setSoTimeout, setSoTimeout

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DEFAULT_PORT

public static final int DEFAULT_PORT

The default discard port. It is set to 9 according to RFC 863.

See Also:

• Constant Field Values

Constructor Details

DiscardUDPClient

public DiscardUDPClient()

Method Details

send

public void send(byte[] data,
 InetAddress host)
          throws IOException

Same as send(data, data.length, host. DiscardUDPClient.DEFAULT_PORT).

Parameters:

data - the buffer to send

host - the target host

Throws:

IOException - if an error occurs

See Also:

• send(byte[], int, InetAddress, int)

send

public void send(byte[] data,
 int length,
 InetAddress host)
          throws IOException

Same as send(data, length, host. DiscardUDPClient.DEFAULT_PORT).

Parameters:

data - the buffer to send

length - the length of the data in the buffer

host - the target host

Throws:

IOException - if an error occurs

See Also:

• send(byte[], int, InetAddress, int)

send

public void send(byte[] data,
 int length,
 InetAddress host,
 int port)
          throws IOException

Sends the specified data to the specified server at the specified port.

Parameters:

data - The discard data to send.

length - The length of the data to send. Should be less than or equal to the length of the data byte array.

host - The address of the server.

port - The service port.

Throws:

IOException - If an error occurs during the datagram send operation.