home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
PC World Komputer 1995 November
/
PCWK1195.iso
/
inne
/
win95
/
sieciowe
/
hotja32.lzh
/
hotjava
/
classsrc
/
net
/
networkclient.java
< prev
next >
Wrap
Text File
|
1995-08-11
|
2KB
|
74 lines
/*
* @(#)NetworkClient.java 1.15 95/05/12 Jonathan Payne
*
* Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and without
* fee is hereby granted provided that this copyright notice
* appears in all copies. Please refer to the file "copyright.html"
* for further important copyright and licensing information.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*/
package net;
import net.*;
import java.io.*;
import net.www.html.URL;
/**
* This is the base class for network clients.
*
* @version 1.15, 12 May 1995
* @author Jonathan Payne
*/
public class NetworkClient {
/** Socket for communicating with server. */
protected Socket serverSocket = null;
/** Stream for printing to the server. */
public PrintStream serverOutput;
/** Buffered stream for reading replies from server. */
public InputStream serverInput;
/** Open a connection to the server. */
public void openServer(String server, int port) {
if (serverSocket != null)
closeServer();
serverSocket = new Socket(server, port);
serverOutput = new PrintStream(new BufferedOutputStream(serverSocket.outputStream),
true);
serverInput = new BufferedInputStream(serverSocket.inputStream);
}
/** Close an open connection to the server. */
public void closeServer() {
if (! serverIsOpen()) {
return;
}
serverSocket.close();
serverSocket = null;
serverInput = null;
serverOutput = null;
}
/** Return server connection status */
public boolean serverIsOpen() {
return serverSocket != null;
}
/** Create connection with host <i>host</i> on port <i>port</i> */
public NetworkClient(String host, int port) {
openServer(host, port);
}
public NetworkClient() {}
}