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/*
 * Copyright (c) 2018 Uber Technologies, Inc. ([email protected])
 *
 * 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.uber.hoodie.common.util;

import com.uber.hoodie.exception.HoodieException;
import java.io.IOException;
import java.net.ServerSocket;

public class NetworkUtils {

  public static synchronized String getHostname() {
    ServerSocket s = null;
    try {
      s = new ServerSocket(0);
      return s.getInetAddress().getHostAddress();
    } catch (IOException e) {
      throw new HoodieException("Unable to find server port", e);
    } finally {
      if (null != s) {
        try {
          s.close();
        } catch (IOException e) {
          throw new HoodieException("Unable to close server port", e);
        }
      }
    }
  }
}