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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/transport/SocketTransport.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/transport/SocketTransport.java | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/transport/SocketTransport.java b/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/transport/SocketTransport.java new file mode 100644 index 000000000..3b0a8e7fe --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/transport/SocketTransport.java @@ -0,0 +1,196 @@ +/* SocketTransport.java -- a socket transport + Copyright (C) 2005, 2007 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.classpath.jdwp.transport; + +import gnu.classpath.jdwp.transport.ITransport; +import gnu.classpath.jdwp.transport.TransportException; + +import java.io.InputStream; +import java.io.IOException; +import java.io.OutputStream; +import java.net.ServerSocket; +import java.net.Socket; +import java.util.HashMap; + +import javax.net.ServerSocketFactory; +import javax.net.SocketFactory; + +/** + * A socket-based transport. This transport uses + * configury string that looks like "name=dt_socket, + * address=localhost:1234,server=y". + * + * @author Keith Seitz (keiths@redhat.com) + */ +class SocketTransport + implements ITransport +{ + /** + * Name of this transport + */ + public static final String NAME = "dt_socket"; + + // Configure properties + private static final String _PROPERTY_ADDRESS = "address"; + private static final String _PROPERTY_SERVER = "server"; + + // Port number + private int _port; + + // Host name + private String _host; + + // Are we acting as a server? + private boolean _server = false; + + // Socket + private Socket _socket; + + /** + * Setup the connection configuration from the given properties + * + * @param properties the properties of the JDWP session + * @throws TransportException for any configury errors + */ + public void configure(HashMap properties) + throws TransportException + { + // Get server [form: "y" or "n"] + String p = (String) properties.get(_PROPERTY_SERVER); + if (p != null) + { + if (p.toLowerCase().equals("y")) + _server = true; + } + + // Get address [form: "hostname:port"] + p = (String) properties.get(_PROPERTY_ADDRESS); + if (p != null) + { + String[] s = p.split(":"); + if (s.length == 1) + { + // Port number only. Assume "localhost" + _port = Integer.parseInt(s[0]); + _host = "localhost"; + } + else + { + if (s[0].length() == 0) + _host = "localhost"; + else + _host = s[0]; + _port = Integer.parseInt(s[1]); + } + } + } + + /** + * Initialize this socket connection. This includes + * connecting to the host (or listening for it). + * + * @throws TransportException if a transport-related error occurs + */ + public void initialize () + throws TransportException + { + try + { + if (_server) + { + // Get a server socket + ServerSocketFactory ssf = ServerSocketFactory.getDefault (); + ServerSocket ss = ssf.createServerSocket (_port, 1); + _socket = ss.accept (); + } + else + { + // Get a client socket (the factory will connect it) + SocketFactory sf = SocketFactory.getDefault (); + _socket = sf.createSocket (_host, _port); + } + } + catch (IOException ioe) + { + // This will grab UnknownHostException, too. + throw new TransportException (ioe); + } + } + + /** + * Shutdown the socket. This could cause SocketExceptions + * for anyone blocked on socket i/o + */ + public void shutdown () + { + try + { + _socket.close (); + } + catch (Throwable t) + { + // We don't really care about errors at this point + } + } + + /** + * Returns an <code>InputStream</code> for the transport + * + * @throws IOException if an I/O error occurs creating the stream + * or the socket is not connected + */ + public InputStream getInputStream () + throws IOException + { + return _socket.getInputStream (); + } + + /** + * Returns an <code>OutputStream</code> for the transport + * + * @throws IOException if an I/O error occurs creating the stream + * or the socket is not connected + */ + public OutputStream getOutputStream () + throws IOException + { + return _socket.getOutputStream (); + } +} |