external-software/github_OpenIdentityPlatform_OpenDJ.git

			@@ -40,6 +40,10 @@
			import java.io.InputStreamReader;
			import java.io.InputStream;
			import java.lang.reflect.InvocationTargetException;
			import java.net.InetAddress;
			import java.net.InetSocketAddress;
			import java.net.ServerSocket;
			import java.net.Socket;
			import java.nio.ByteBuffer;
			import java.text.ParseException;
			import java.text.SimpleDateFormat;
			@@ -2624,6 +2628,82 @@


			/**
			* Indicates whether the provided TCP address is already in use.
			*
			* @param address IP address of the TCP address for which to make
			* the determination.
			* @param port TCP port number of the TCP address for which to
			* make the determination.
			* @param allowReuse Whether or not TCP address reuse is allowed when
			* making the determination.
			*
			* @return <CODE>true</CODE> if the provided TCP address is already in
			* use, or <CODE>false</CODE> otherwise.
			*/
			public static boolean isAddressInUse(
			InetAddress address, int port,
			boolean allowReuse)
			{
			// Return pessimistic.
			boolean isInUse = true;
			Socket clientSocket = null;
			ServerSocket serverSocket = null;
			try {
			// HACK:
			// With dual stacks we can have a situation when INADDR_ANY/PORT
			// is bound in TCP4 space but available in TCP6 space and since
			// JavaServerSocket implemantation will always use TCP46 on dual
			// stacks the bind below will always succeed in such cases thus
			// shadowing anything that is already bound to INADDR_ANY/PORT.
			// While technically correct, with IPv4 and IPv6 being separate
			// address spaces, it presents a problem to end users because a
			// common case scenario is to have a single service serving both
			// address spaces ie listening to the same port in both spaces
			// on wildcard addresses 0 and ::. ServerSocket implemantation
			// does not provide any means of working with each address space
			// separately such as doing TCP4 or TCP6 only binds thus we have
			// to do a dummy connect to INADDR_ANY/PORT to check if it is
			// bound to something already. This is only needed for wildcard
			// addresses as specific IPv4 or IPv6 addresses will always be
			// handled in their respective address space.
			if (address.isAnyLocalAddress()) {
			clientSocket = new Socket();
			try {
			// This might fail on some stacks but this is the best we
			// can do. No need for explicit timeout since it is local
			// address and we have to know for sure unless it fails.
			clientSocket.connect(new InetSocketAddress(address, port));
			} catch (IOException e) {
			// Expected, ignore.
			}
			if (clientSocket.isConnected()) {
			isInUse = true;
			}
			}
			serverSocket = new ServerSocket();
			serverSocket.setReuseAddress(allowReuse);
			serverSocket.bind(new InetSocketAddress(address, port));
			isInUse = false;
			} catch (IOException e) {
			isInUse = true;
			} finally {
			try {
			if (serverSocket != null) {
			serverSocket.close();
			}
			} catch (Exception e) {}
			try {
			if (clientSocket != null) {
			clientSocket.close();
			}
			} catch (Exception e) {}
			}
			return isInUse;
			}



			/**
			* Retrieves a lowercase representation of the given string. This
			* implementation presumes that the provided string will contain only ASCII
			* characters and is optimized for that case. However, if a non-ASCII