1 /* 2 * Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package java.net; 26 27 import java.io.IOException; 28 import java.io.FileDescriptor; 29 import java.util.Set; 30 import java.util.HashSet; 31 import sun.net.ext.ExtendedSocketOptions; 32 33 /* 34 * On Unix systems we simply delegate to native methods. 35 * 36 * @author Chris Hegarty 37 */ 38 39 class PlainSocketImpl extends AbstractPlainSocketImpl 40 { 41 static { 42 initProto(); 43 } 44 45 /** 46 * Constructs an empty instance. 47 */ 48 PlainSocketImpl() { } 49 50 /** 51 * Constructs an instance with the given file descriptor. 52 */ 53 PlainSocketImpl(FileDescriptor fd) { 54 this.fd = fd; 55 } 56 57 static final ExtendedSocketOptions extendedOptions = 58 ExtendedSocketOptions.getInstance(); 59 60 protected <T> void setOption(SocketOption<T> name, T value) throws IOException { 61 if (!extendedOptions.isOptionSupported(name)) { 62 if (!name.equals(StandardSocketOptions.SO_REUSEPORT)) { 63 super.setOption(name, value); 64 } else { 65 if (supportedOptions().contains(name)) { 66 super.setOption(name, value); 67 } else { 68 throw new UnsupportedOperationException("unsupported option"); 69 } 70 } 71 } else { 72 if (getSocket() == null) { 73 throw new UnsupportedOperationException("unsupported option"); 74 } 75 if (isClosedOrPending()) { 76 throw new SocketException("Socket closed"); 77 } 78 extendedOptions.setOption(fd, name, value); 79 } 80 } 81 82 @SuppressWarnings("unchecked") 83 protected <T> T getOption(SocketOption<T> name) throws IOException { 84 if (!extendedOptions.isOptionSupported(name)) { 85 if (!name.equals(StandardSocketOptions.SO_REUSEPORT)) { 86 return super.getOption(name); 87 } else { 88 if (supportedOptions().contains(name)) { 89 return super.getOption(name); 90 } else { 91 throw new UnsupportedOperationException("unsupported option"); 92 } 93 } 94 } else { 95 if (getSocket() == null) { 96 throw new UnsupportedOperationException("unsupported option"); 97 } 98 if (isClosedOrPending()) { 99 throw new SocketException("Socket closed"); 100 } 101 return (T) extendedOptions.getOption(fd, name); 102 } 103 } 104 105 protected Set<SocketOption<?>> supportedOptions() { 106 HashSet<SocketOption<?>> options = new HashSet<>(super.supportedOptions()); 107 if (getSocket() != null) { 108 options.addAll(extendedOptions.options()); 109 } 110 return options; 111 } 112 113 protected void socketSetOption(int opt, boolean b, Object val) throws SocketException { 114 if (opt == SocketOptions.SO_REUSEPORT && 115 !supportedOptions().contains(StandardSocketOptions.SO_REUSEPORT)) { 116 throw new UnsupportedOperationException("unsupported option"); 117 } 118 try { 119 socketSetOption0(opt, b, val); 120 } catch (SocketException se) { 121 if (socket == null || !socket.isConnected()) 122 throw se; 123 } 124 } 125 126 native void socketCreate(boolean isServer) throws IOException; 127 128 native void socketConnect(InetAddress address, int port, int timeout) 129 throws IOException; 130 131 native void socketBind(InetAddress address, int port) 132 throws IOException; 133 134 native void socketListen(int count) throws IOException; 135 136 native void socketAccept(SocketImpl s) throws IOException; 137 138 native int socketAvailable() throws IOException; 139 140 native void socketClose0(boolean useDeferredClose) throws IOException; 141 142 native void socketShutdown(int howto) throws IOException; 143 144 static native void initProto(); 145 146 native void socketSetOption0(int cmd, boolean on, Object value) 147 throws SocketException; 148 149 native int socketGetOption(int opt, Object iaContainerObj) throws SocketException; 150 151 native void socketSendUrgentData(int data) throws IOException; 152 }