/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.intellij.util.net;

import com.intellij.openapi.diagnostic.Logger;

import java.io.IOException;
import java.net.ServerSocket;

/**
 * @author yole
 */
public class NetUtils {
  private static final Logger LOG = Logger.getInstance("#com.intellij.util.net.NetUtils");

  private NetUtils() {
  }

  public static int findAvailableSocketPort() throws IOException {
    final ServerSocket serverSocket = new ServerSocket(0);
    int port = serverSocket.getLocalPort();
    //workaround for linux : calling close() immediately after opening socket
    //may result that socket is not closed
    synchronized(serverSocket) {
      try {
        serverSocket.wait(1);
      }
      catch (InterruptedException e) {
        LOG.error(e);
      }
    }
    serverSocket.close();
    return port;
  }

  public static int[] findAvailableSocketPorts(int capacity) throws IOException {
    final int[] ports = new int[capacity];
    final ServerSocket[] sockets = new ServerSocket[capacity];

    for (int i = 0; i < capacity; i++) {
      final ServerSocket serverSocket = new ServerSocket(0);
      sockets[i] = serverSocket;
      ports[i] = serverSocket.getLocalPort();
    }
    //workaround for linux : calling close() immediately after opening socket
    //may result that socket is not closed
    synchronized(sockets) {
      try {
        sockets.wait(1);
      }
      catch (InterruptedException e) {
        LOG.error(e);
      }
    }

    for (ServerSocket socket : sockets) {
      socket.close();
    }
    return ports;
  }
}

@@ -678,65 +678,177 @@
 er;%0A
-%0Aimport java.io.IOException;%0Aimport java.net.ServerSocket
+import com.intellij.openapi.util.SystemInfo;%0A%0Aimport java.io.IOException;%0Aimport java.net.InetAddress;%0Aimport java.net.ServerSocket;%0Aimport java.net.UnknownHostException
 ;%0A%0A/
@@ -2248,11 +2248,436 @@
 rts;%0A  %7D
+%0A%0A  private static String getLocalHostString() %7B%0A    // HACK for Windows with ipv6%0A    String localHostString = %22localhost%22;%0A    try %7B%0A      final InetAddress localHost = InetAddress.getByName(localHostString);%0A      if (localHost.getAddress().length != 4 && SystemInfo.isWindows)%7B%0A        localHostString = %22127.0.0.1%22;%0A      %7D%0A    %7D%0A    catch (UnknownHostException e) %7B%0A      // ignore%0A    %7D%0A    return localHostString;%0A  %7D
 %0A%7D%0A

Fix for well known localhost problem on windows