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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * 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
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package sun.net.util;

import java.io.IOException;
import java.lang.reflect.Constructor;
import java.net.InetSocketAddress;
import java.net.UnixDomainSocketAddress;
import java.net.SocketAddress;
import java.security.AccessController;
import java.security.PrivilegedAction;

import sun.security.util.SecurityProperties;

public final class SocketExceptions {
    private SocketExceptions() {}

    private static final boolean enhancedExceptionText =
        SecurityProperties.includedInExceptions("hostInfo");

    
Utility which takes an exception and returns either the same exception or a new exception of the same type with the same stack trace and detail message enhanced with addressing information from the given InetSocketAddress. If the system/security property "jdk.includeInExceptions" is not set or does not contain the category hostInfo, then the original exception is returned. Only specific IOException subtypes are supported.
/** * Utility which takes an exception and returns either the same exception * or a new exception of the same type with the same stack trace * and detail message enhanced with addressing information from the * given InetSocketAddress. * * If the system/security property "jdk.includeInExceptions" is not * set or does not contain the category hostInfo, * then the original exception is returned. * * Only specific IOException subtypes are supported. */
public static IOException of(IOException e, SocketAddress addr) { if (!enhancedExceptionText || addr == null) { return e; } if (addr instanceof UnixDomainSocketAddress) { return ofUnixDomain(e, (UnixDomainSocketAddress)addr); } else if (addr instanceof InetSocketAddress) { return ofInet(e, (InetSocketAddress)addr); } else { return e; } } private static IOException ofInet(IOException e, InetSocketAddress addr) { int port = addr.getPort(); String host = addr.getHostString(); StringBuilder sb = new StringBuilder(); sb.append(e.getMessage()); sb.append(": "); sb.append(host); sb.append(':'); sb.append(Integer.toString(port)); String enhancedMsg = sb.toString(); return create(e, enhancedMsg); } private static IOException ofUnixDomain(IOException e, UnixDomainSocketAddress addr) { String path = addr.getPath().toString(); StringBuilder sb = new StringBuilder(); sb.append(e.getMessage()); sb.append(": "); sb.append(path); String enhancedMsg = sb.toString(); return create(e, enhancedMsg); } // return a new instance of the same type with the given detail // msg, or if the type doesn't support detail msgs, return given // instance. private static IOException create(IOException e, String msg) { return AccessController.doPrivileged(new PrivilegedAction<IOException>() { public IOException run() { try { Class<?> clazz = e.getClass(); Constructor<?> ctor = clazz.getConstructor(String.class); IOException e1 = (IOException)(ctor.newInstance(msg)); e1.setStackTrace(e.getStackTrace()); return e1; } catch (Exception e0) { // Some eg AsynchronousCloseException have no detail msg return e; } } }); } }