org.apache.commons.net.chargen

Class 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 of 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

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

Constructor Summary

CharGenTCPClient()
The default constructor for CharGenTCPClient.

Method Summary

InputStream
getInputStream()
Returns an InputStream from which the server generated data can be read.

Field Details

CHARGEN_PORT

public static final int CHARGEN_PORT
The character generator port value of 19 according to RFC 864. **
Field Value:
19

DEFAULT_PORT

public static final int DEFAULT_PORT
The default chargen port. It is set to 19 according to RFC 864. **
Field Value:
19

NETSTAT_PORT

public static final int NETSTAT_PORT
The netstat port value of 19. **
Field Value:
15

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. **
Field Value:
17

SYSTAT_PORT

public static final int SYSTAT_PORT
The systat port value of 11 according to RFC 866. **
Field Value:
11

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.