/* |
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* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.oracle.net; |
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import java.net.Socket; |
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import java.net.ServerSocket; |
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import java.net.SocketImpl; |
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import java.net.SocketImplFactory; |
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import java.net.SocketException; |
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import java.nio.channels.SocketChannel; |
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import java.nio.channels.ServerSocketChannel; |
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import java.io.IOException; |
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import java.io.FileDescriptor; |
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import java.security.AccessController; |
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import java.security.PrivilegedAction; |
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import java.lang.reflect.Constructor; |
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import java.lang.reflect.AccessibleObject; |
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import java.lang.reflect.InvocationTargetException; |
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import sun.net.sdp.SdpSupport; |
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/** |
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* This class consists exclusively of static methods that Sockets or Channels to |
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* sockets that support the InfiniBand Sockets Direct Protocol (SDP). |
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*/ |
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public final class Sdp { |
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private Sdp() { } |
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/** |
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* The package-privage ServerSocket(SocketImpl) constructor |
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*/ |
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private static final Constructor<ServerSocket> serverSocketCtor; |
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static { |
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try { |
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serverSocketCtor = (Constructor<ServerSocket>) |
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ServerSocket.class.getDeclaredConstructor(SocketImpl.class); |
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setAccessible(serverSocketCtor); |
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} catch (NoSuchMethodException e) { |
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throw new AssertionError(e); |
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} |
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} |
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/** |
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* The package-private SdpSocketImpl() constructor |
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*/ |
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private static final Constructor<SocketImpl> socketImplCtor; |
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static { |
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try { |
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Class<?> cl = Class.forName("java.net.SdpSocketImpl", true, null); |
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socketImplCtor = (Constructor<SocketImpl>)cl.getDeclaredConstructor(); |
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setAccessible(socketImplCtor); |
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} catch (ClassNotFoundException e) { |
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throw new AssertionError(e); |
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} catch (NoSuchMethodException e) { |
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throw new AssertionError(e); |
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} |
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} |
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private static void setAccessible(final AccessibleObject o) { |
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AccessController.doPrivileged(new PrivilegedAction<Void>() { |
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public Void run() { |
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o.setAccessible(true); |
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return null; |
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} |
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}); |
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} |
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/** |
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* SDP enabled Socket. |
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*/ |
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private static class SdpSocket extends Socket { |
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SdpSocket(SocketImpl impl) throws SocketException { |
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super(impl); |
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} |
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} |
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/** |
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* Creates a SDP enabled SocketImpl |
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*/ |
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private static SocketImpl createSocketImpl() { |
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try { |
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return socketImplCtor.newInstance(); |
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} catch (InstantiationException x) { |
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throw new AssertionError(x); |
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} catch (IllegalAccessException x) { |
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throw new AssertionError(x); |
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} catch (InvocationTargetException x) { |
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throw new AssertionError(x); |
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} |
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} |
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/** |
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* Creates an unconnected and unbound SDP socket. The {@code Socket} is |
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* associated with a {@link java.net.SocketImpl} of the system-default type. |
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* |
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* @return a new Socket |
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* |
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* @throws UnsupportedOperationException |
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* If SDP is not supported |
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* @throws IOException |
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* If an I/O error occurs |
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*/ |
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public static Socket openSocket() throws IOException { |
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SocketImpl impl = createSocketImpl(); |
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return new SdpSocket(impl); |
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} |
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/** |
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* Creates an unbound SDP server socket. The {@code ServerSocket} is |
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* associated with a {@link java.net.SocketImpl} of the system-default type. |
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* |
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* @return a new ServerSocket |
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* |
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* @throws UnsupportedOperationException |
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* If SDP is not supported |
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* @throws IOException |
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* If an I/O error occurs |
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*/ |
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public static ServerSocket openServerSocket() throws IOException { |
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// create ServerSocket via package-private constructor |
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SocketImpl impl = createSocketImpl(); |
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try { |
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return serverSocketCtor.newInstance(impl); |
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} catch (IllegalAccessException x) { |
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throw new AssertionError(x); |
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} catch (InstantiationException x) { |
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throw new AssertionError(x); |
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} catch (InvocationTargetException x) { |
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Throwable cause = x.getCause(); |
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if (cause instanceof IOException) |
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throw (IOException)cause; |
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if (cause instanceof RuntimeException) |
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throw (RuntimeException)cause; |
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throw new RuntimeException(x); |
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} |
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} |
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/** |
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* Opens a socket channel to a SDP socket. |
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* |
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* <p> The channel will be associated with the system-wide default |
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* {@link java.nio.channels.spi.SelectorProvider SelectorProvider}. |
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* |
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* @return a new SocketChannel |
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* |
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* @throws UnsupportedOperationException |
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* If SDP is not supported or not supported by the default selector |
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* provider |
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* @throws IOException |
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* If an I/O error occurs. |
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*/ |
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public static SocketChannel openSocketChannel() throws IOException { |
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FileDescriptor fd = SdpSupport.createSocket(); |
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return sun.nio.ch.Secrets.newSocketChannel(fd); |
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} |
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/** |
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* Opens a socket channel to a SDP socket. |
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* |
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* <p> The channel will be associated with the system-wide default |
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* {@link java.nio.channels.spi.SelectorProvider SelectorProvider}. |
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* |
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* @return a new ServerSocketChannel |
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* |
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* @throws UnsupportedOperationException |
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* If SDP is not supported or not supported by the default selector |
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* provider |
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* @throws IOException |
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* If an I/O error occurs |
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*/ |
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public static ServerSocketChannel openServerSocketChannel() |
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throws IOException |
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{ |
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FileDescriptor fd = SdpSupport.createSocket(); |
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return sun.nio.ch.Secrets.newServerSocketChannel(fd); |
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} |
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} |