Package org.apache.commons.net.chargen

Class CharGenTCPClient

java.lang.Object

org.apache.commons.net.SocketClient

org.apache.commons.net.chargen.CharGenTCPClient

public final class CharGenTCPClient
extends SocketClient

The CharGenTCPClient class is a TCP implementation of a client for the character generator protocol described in RFC 864. It can also be used for Systat (RFC 866), Quote of the Day (RFC 865), and netstat (port 15). All of these protocols involve connecting to the appropriate port, and reading data from an input stream. The chargen protocol actually sends data until the receiving end closes the connection. All the others send only a fixed amount of data and then close the connection.

To use the CharGenTCPClient class, just establish a connection with connect and call getInputStream() to access the data. Don't close the input stream when you're done with it. Rather, call disconnect to clean up properly.

See Also:

• CharGenUDPClient

Field Summary

Fields

Modifier and Type	Field	Description
static final int	CHARGEN_PORT	The character generator port value of 19 according to RFC 864.
static final int	DEFAULT_PORT	The default chargen port.
static final int	NETSTAT_PORT	The netstat port value of 19.
static final int	QUOTE_OF_DAY_PORT	The quote of the day port value of 17 according to RFC 865.
static final int	SYSTAT_PORT	The systat port value of 11 according to RFC 866.

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

_defaultPort_, _hostname_, _input_, _output_, _serverSocketFactory_, _socket_, _socketFactory_, _timeout_, connectTimeout, NETASCII_EOL, remoteInetSocketAddress

Constructor Summary

Constructors

Constructor	Description
CharGenTCPClient()	The default constructor for CharGenTCPClient.

Method Summary

Modifier and Type	Method	Description
InputStream	getInputStream()	Returns an InputStream from which the server generated data can be read.

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

_connectAction_, addProtocolCommandListener, applySocketAttributes, checkOpenOutputStream, connect, connect, connect, connect, connect, connect, createCommandSupport, disconnect, fireCommandSent, fireReplyReceived, getCharset, getCharsetName, getCommandSupport, getConnectTimeout, getDefaultPort, getDefaultTimeout, getKeepAlive, getLocalAddress, getLocalPort, getProxy, getReceiveBufferSize, getRemoteAddress, getRemoteInetSocketAddress, getRemotePort, getSendBufferSize, getServerSocketFactory, getSoLinger, getSoTimeout, getTcpNoDelay, isAvailable, isConnected, removeProtocolCommandListener, setCharset, setConnectTimeout, setDefaultPort, setDefaultTimeout, setKeepAlive, setProxy, setReceiveBufferSize, setSendBufferSize, setServerSocketFactory, setSocketFactory, setSoLinger, setSoTimeout, setTcpNoDelay, verifyRemote

Methods inherited from class java.lang.Object

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

Field Details

SYSTAT_PORT

public static final int SYSTAT_PORT

The systat port value of 11 according to RFC 866.

See Also:

• Constant Field Values

NETSTAT_PORT

public static final int NETSTAT_PORT

The netstat port value of 19.

See Also:

• Constant Field Values

QUOTE_OF_DAY_PORT

public static final int QUOTE_OF_DAY_PORT

The quote of the day port value of 17 according to RFC 865.

See Also:

• Constant Field Values

CHARGEN_PORT

public static final int CHARGEN_PORT

The character generator port value of 19 according to RFC 864.

See Also:

• Constant Field Values

DEFAULT_PORT

public static final int DEFAULT_PORT

The default chargen port. It is set to 19 according to RFC 864.

See Also:

• Constant Field Values

Constructor Details

CharGenTCPClient

public CharGenTCPClient()

The default constructor for CharGenTCPClient. It merely sets the default port to DEFAULT_PORT.

Method Details

getInputStream

public InputStream getInputStream()

Returns an InputStream from which the server generated data can be read. You should NOT close the InputStream when you're finished reading from it. Rather, you should call disconnect to clean up properly.

Returns:

An InputStream from which the server generated data can be read.