Back to index

im-sdk  12.3.91
IIIMPURLConnection.java
Go to the documentation of this file.
00001 /*
00002 Copyright 1990-2001 Sun Microsystems, Inc. All Rights Reserved.
00003 
00004 Permission is hereby granted, free of charge, to any person obtaining a
00005 copy of this software and associated documentation files (the
00006 "Software"), to deal in the Software without restriction, including
00007 without limitation the rights to use, copy, modify, merge, publish,
00008 distribute, sublicense, and/or sell copies of the Software, and to
00009 permit persons to whom the Software is furnished to do so, subject to
00010 the following conditions: The above copyright notice and this
00011 permission notice shall be included in all copies or substantial
00012 portions of the Software.
00013 
00014 
00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
00016 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00017 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
00018 IN NO EVENT SHALL THE OPEN GROUP OR SUN MICROSYSTEMS, INC. BE LIABLE
00019 FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
00020 CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
00021 THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE EVEN IF
00022 ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES.
00023 
00024 
00025 Except as contained in this notice, the names of The Open Group and/or
00026 Sun Microsystems, Inc. shall not be used in advertising or otherwise to
00027 promote the sale, use or other dealings in this Software without prior
00028 written authorization from The Open Group and/or Sun Microsystems,
00029 Inc., as applicable.
00030 
00031 
00032 X Window System is a trademark of The Open Group
00033 
00034 OSF/1, OSF/Motif and Motif are registered trademarks, and OSF, the OSF
00035 logo, LBX, X Window System, and Xinerama are trademarks of the Open
00036 Group. All other trademarks and registered trademarks mentioned herein
00037 are the property of their respective owners. No right, title or
00038 interest in or to any trademark, service mark, logo or trade name of
00039 Sun Microsystems, Inc. or its licensors is granted.
00040 
00041 */
00042 
00043 
00044 package sun.awt.im.iiimp;
00045 
00046 import java.io.IOException;
00047 import java.io.InputStream;
00048 import java.io.OutputStream;
00049 import java.net.URL;
00050 import java.net.URLConnection;
00051 import java.net.UnknownHostException;
00052 import java.net.MalformedURLException;
00053 import sun.net.NetworkClient;
00054 
00055 //public 
00056 class IIIMPURLConnection extends URLConnection {
00057 
00058     NetworkClient nc = null;
00059 
00060     protected IIIMPURLConnection(URL url) {
00061        super(url);
00062        // This only creates an instance for NetworkClient.
00063        nc = new NetworkClient();
00064     }
00065 
00066     public void connect() throws IOException {
00067        if (connected == true) {
00068            return;
00069        }
00070        nc.openServer(url.getHost(), url.getPort());
00071        connected = true;
00072     }
00073 
00074     public void disconnect() throws IOException {
00075        if (connected == false) {
00076            return;
00077        }
00078        nc.closeServer();
00079     }
00080 
00081     public boolean isConnected() {
00082        return nc.serverIsOpen();
00083     }
00084     
00085     public InputStream getInputStream() throws IOException {
00086        try {
00087            connect();
00088            return nc.serverInput;
00089        } catch (RuntimeException e) {
00090            disconnect();
00091            throw e;
00092        } catch (IOException e) {
00093            disconnect();
00094            throw e;
00095        }
00096     }
00097 
00098     public OutputStream getOutputStream() throws IOException {
00099        try {
00100            connect();
00101            return nc.serverOutput;
00102        } catch (RuntimeException e) {
00103            disconnect();
00104            throw e;
00105        } catch (IOException e) {
00106            disconnect();
00107            throw e;
00108        }
00109     }
00110 }