/*
* Copyright (c) 2009, 2010, 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
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*/
package sun.net;
import java.net.InetAddress;
import java.io.FileDescriptor;
import java.io.IOException;
/**
* Defines static methods to be invoked prior to binding or connecting TCP sockets.
*/
public final class NetHooks {
/**
* A provider with hooks to allow sockets be converted prior to binding or
* connecting a TCP socket.
*
* <p> Concrete implementations of this class should define a zero-argument
* constructor and implement the abstract methods specified below.
*/
public abstract static class Provider {
/**
* Initializes a new instance of this class.
*/
protected Provider() {}
/**
* Invoked prior to binding a TCP socket.
*/
public abstract void implBeforeTcpBind(FileDescriptor fdObj,
InetAddress address,
int port)
throws IOException;
/**
* Invoked prior to connecting an unbound TCP socket.
*/
public abstract void implBeforeTcpConnect(FileDescriptor fdObj,
InetAddress address,
int port)
throws IOException;
}
/**
* For now, we load the SDP provider on Solaris. In the future this may
* be changed to use the ServiceLoader facility to allow the deployment of
* other providers.
*/
private static final Provider provider = new sun.net.sdp.SdpProvider();
/**
* Invoke prior to binding a TCP socket.
*/
public static void beforeTcpBind(FileDescriptor fdObj,
InetAddress address,
int port)
throws IOException
{
provider.implBeforeTcpBind(fdObj, address, port);
}
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