| /* |
| * Copyright (c) 2007, 2016, 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 java.net; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| import java.util.HashSet; |
| import sun.net.ext.ExtendedSocketOptions; |
| |
| /* |
| * On Unix systems we simply delegate to native methods. |
| * |
| * @author Chris Hegarty |
| */ |
| |
| class PlainDatagramSocketImpl extends AbstractPlainDatagramSocketImpl |
| { |
| static { |
| init(); |
| } |
| |
| static final ExtendedSocketOptions extendedOptions = |
| ExtendedSocketOptions.getInstance(); |
| |
| protected <T> void setOption(SocketOption<T> name, T value) throws IOException { |
| if (!extendedOptions.isOptionSupported(name)) { |
| if (!name.equals(StandardSocketOptions.SO_REUSEPORT)) { |
| super.setOption(name, value); |
| } else { |
| if (supportedOptions().contains(name)) { |
| super.setOption(name, value); |
| } else { |
| throw new UnsupportedOperationException("unsupported option"); |
| } |
| } |
| } else { |
| if (isClosed()) { |
| throw new SocketException("Socket closed"); |
| } |
| extendedOptions.setOption(fd, name, value); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| protected <T> T getOption(SocketOption<T> name) throws IOException { |
| if (!extendedOptions.isOptionSupported(name)) { |
| if (!name.equals(StandardSocketOptions.SO_REUSEPORT)) { |
| return super.getOption(name); |
| } else { |
| if (supportedOptions().contains(name)) { |
| return super.getOption(name); |
| } else { |
| throw new UnsupportedOperationException("unsupported option"); |
| } |
| } |
| } else { |
| if (isClosed()) { |
| throw new SocketException("Socket closed"); |
| } |
| return (T) extendedOptions.getOption(fd, name); |
| } |
| } |
| |
| protected Set<SocketOption<?>> supportedOptions() { |
| HashSet<SocketOption<?>> options = new HashSet<>(super.supportedOptions()); |
| options.addAll(extendedOptions.options()); |
| return options; |
| } |
| |
| protected void socketSetOption(int opt, Object val) throws SocketException { |
| if (opt == SocketOptions.SO_REUSEPORT && |
| !supportedOptions().contains(StandardSocketOptions.SO_REUSEPORT)) { |
| throw new UnsupportedOperationException("unsupported option"); |
| } |
| try { |
| socketSetOption0(opt, val); |
| } catch (SocketException se) { |
| if (!connected) |
| throw se; |
| } |
| } |
| |
| protected synchronized native void bind0(int lport, InetAddress laddr) |
| throws SocketException; |
| |
| protected native void send(DatagramPacket p) throws IOException; |
| |
| protected synchronized native int peek(InetAddress i) throws IOException; |
| |
| protected synchronized native int peekData(DatagramPacket p) throws IOException; |
| |
| protected synchronized native void receive0(DatagramPacket p) |
| throws IOException; |
| |
| protected native void setTimeToLive(int ttl) throws IOException; |
| |
| protected native int getTimeToLive() throws IOException; |
| |
| @Deprecated |
| protected native void setTTL(byte ttl) throws IOException; |
| |
| @Deprecated |
| protected native byte getTTL() throws IOException; |
| |
| protected native void join(InetAddress inetaddr, NetworkInterface netIf) |
| throws IOException; |
| |
| protected native void leave(InetAddress inetaddr, NetworkInterface netIf) |
| throws IOException; |
| |
| protected native void datagramSocketCreate() throws SocketException; |
| |
| protected native void datagramSocketClose(); |
| |
| protected native void socketSetOption0(int opt, Object val) |
| throws SocketException; |
| |
| protected native Object socketGetOption(int opt) throws SocketException; |
| |
| protected native void connect0(InetAddress address, int port) throws SocketException; |
| |
| protected native void disconnect0(int family); |
| |
| native int dataAvailable(); |
| |
| /** |
| * Perform class load-time initializations. |
| */ |
| private static native void init(); |
| } |