/*
* 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
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
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);
}
/**
* Invoke prior to connecting an unbound TCP socket .
*/
public static void beforeTcpConnect(FileDescriptor fdObj,
InetAddress address,
int port)
throws IOException
{
provider.implBeforeTcpConnect(fdObj, address, port);
}
}
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