// JWR: This modification gets rid of nasty problems to do with unroutable hostnames.
// OSX uses these a lot, and it is a total pain.
// See my comments in stdlib.Trace.java
//
// In openjdk8, https://jdk8.java.net , this source is found in
//
//   openjdk8/jdk/src/share/classes/com/sun/tools/jdi/SocketTransportService.java

/*
 * Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.tools.jdi;

import java.net.*;

class SocketTransportService$SocketListenKey extends com.sun.jdi.connect.spi.TransportService.ListenKey {
        ServerSocket ss;
        SocketTransportService$SocketListenKey (ServerSocket ss) {
                this.ss = ss;
        }
        ServerSocket socket () {
                return ss;
        }
        public String toString () {
                return address ();
        }

        // Returns the string representation of the address that this listen key represents.
        public String address () {
                InetAddress address = ss.getInetAddress ();

                // If bound to the wildcard address then use current local hostname. In
                // the event that we don't know our own hostname then assume that host
                // supports IPv4 and return something to represent the loopback address.
                if (address.isAnyLocalAddress ()) {
                        // JWR: Only change is to comment out the lines below
                        // try {
                        //     address = InetAddress.getLocalHost ();
                        // } catch (UnknownHostException uhe) {
                        byte[] loopback = { 0x7f, 0x00, 0x00, 0x01 };
                        try {
                                address = InetAddress.getByAddress ("127.0.0.1", loopback);
                        } catch (UnknownHostException x) {
                                throw new InternalError ("unable to get local hostname");
                        }
                        //  }
                }

                // Now decide if we return a hostname or IP address. Where possible
                // return a hostname but in the case that we are bound to an address
                // that isn't registered in the name service then we return an address.
                String result;
                String hostname = address.getHostName ();
                String hostaddr = address.getHostAddress ();
                if (hostname.equals(hostaddr)) {
                        if (address instanceof Inet6Address) {
                                result = "[" + hostaddr + "]";
                        } else {
                                result = hostaddr;
                        }
                } else {
                        result = hostname;
                }

                // Finally return "hostname:port", "ipv4-address:port" or "[ipv6-address]:port".
                return result + ":" + ss.getLocalPort ();
        }
}