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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.

Author: Daniel F. Savarese

See Also:

Field Summary
static intCHARGEN_PORT
The character generator port value of 19 according to RFC 864.
static intDEFAULT_PORT
The default chargen port.
static intNETSTAT_PORT
The netstat port value of 19.
static intQUOTE_OF_DAY_PORT
The quote of the day port value of 17 according to RFC 865.
static intSYSTAT_PORT
The systat port value of 11 according to RFC 866.
Constructor Summary
CharGenTCPClient()
The default constructor for CharGenTCPClient.
Method Summary
InputStreamgetInputStream()
Returns an InputStream from which the server generated data can be read.

Field Detail

CHARGEN_PORT

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

DEFAULT_PORT

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

NETSTAT_PORT

public static final int NETSTAT_PORT
The netstat port value of 19. **

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. **

SYSTAT_PORT

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

Constructor Detail

CharGenTCPClient

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

Method Detail

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.

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