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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication. This package contains the Commercial Edition of the LDAP SDK, which includes all of the general-purpose functionality contained in the Standard Edition, plus additional functionality specific to UnboundID server products.

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/*
 * Copyright 2012-2016 UnboundID Corp.
 * All Rights Reserved.
 */
/*
 * Copyright (C) 2012-2016 UnboundID Corp.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (GPLv2 only)
 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
 * as published by the Free Software Foundation.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 */
package com.unboundid.util;



import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import javax.net.SocketFactory;



/**
 * This class provides an implementation of a Java socket factory that will
 * wrap a provided socket factory but will synchronize on each use of that
 * factory to ensure that only a single thread may use that factory to create
 * a socket at any given time.
 */
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class SynchronizedSocketFactory
       extends SocketFactory
{
  // The wrapped socket factory.
  private final SocketFactory factory;



  /**
   * Creates a new synchronous socket factory instance that will wrap the
   * provided socket factory.
   *
   * @param  factory  The socket factory to be wrapped.
   */
  public SynchronizedSocketFactory(final SocketFactory factory)
  {
    this.factory = factory;
  }



  /**
   * Retrieves the {@code SocketFactory} instance wrapped by this synchronized
   * socket factory.
   *
   * @return  The {@code SocketFactory} instance wrapped by this synchronized
   *          socket factory.
   */
  public SocketFactory getWrappedSocketFactory()
  {
    return factory;
  }



  /**
   * Creates a new socket to the specified server.
   *
   * @param  host  The host to which the connection should be established.
   * @param  port  The port to which the connection should be established.
   *
   * @return  The socket that was created.
   *
   * @throws  IOException  If a problem occurs while creating the socket.
   */
  @Override()
  public Socket createSocket(final String host, final int port)
         throws IOException
  {
    synchronized (factory)
    {
      return factory.createSocket(host, port);
    }
  }



  /**
   * Creates a new socket to the specified server.
   *
   * @param  host          The host to which the connection should be
   *                       established.
   * @param  port          The port to which the connection should be
   *                       established.
   * @param  localAddress  The local address to use for the connection.  This
   *                       will be ignored.
   * @param  localPort     The local port to use for the connection.  This will
   *                       be ignored.
   *
   * @return  The socket that was created.
   *
   * @throws  IOException  If a problem occurs while creating the socket.
   */
  @Override()
  public Socket createSocket(final String host, final int port,
                             final InetAddress localAddress,
                             final int localPort)
         throws IOException
  {
    synchronized (factory)
    {
      return factory.createSocket(host, port, localAddress, localPort);
    }
  }



  /**
   * Creates a new socket to the specified server.
   *
   * @param  address  The address to which the connection should be established.
   * @param  port     The port to which the connection should be established.
   *
   * @return  The socket that was created.
   *
   * @throws  IOException  If a problem occurs while creating the socket.
   */
  @Override()
  public Socket createSocket(final InetAddress address, final int port)
         throws IOException
  {
    synchronized (factory)
    {
      return factory.createSocket(address, port);
    }
  }



  /**
   * Creates a new socket to the specified server.
   *
   * @param  address       The address to which the connection should be
   *                       established.
   * @param  port          The port to which the connection should be
   *                       established.
   * @param  localAddress  The local address to use for the connection.  This
   *                       will be ignored.
   * @param  localPort     The local port to use for the connection.  This will
   *                       be ignored.
   *
   * @return  The socket that was created.
   *
   * @throws  IOException  If a problem occurs while creating the socket.
   */
  @Override()
  public Socket createSocket(final InetAddress address, final int port,
                             final InetAddress localAddress,
                             final int localPort)
         throws IOException
  {
    synchronized (factory)
    {
      return factory.createSocket(address, port, localAddress, localPort);
    }
  }
}