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package com.browserup.bup.mitmproxy;

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

public class NetworkUtils {

  public static boolean isPortAvailable(int port) {
    try (ServerSocket ss = new ServerSocket(port); DatagramSocket ds = new DatagramSocket(port)) {
      return true;
    } catch (IOException e) {
      return false;
    }
  }

  public static int getFreePort() {
    ServerSocket s = null;
    try {
      s = new ServerSocket(0);
    } catch (IOException e) {
      throw new RuntimeException("Couldn't find free port", e);
    } finally {
      if (s != null) {
        try {
          s.close();
        } catch (IOException e) {
          //
        }
      }
    }
    return s.getLocalPort();
  }
}