content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.instrumentation.api.semconv.network.internal;
  
  import java.net.Inet4Address;
  import java.net.Inet6Address;
  import java.net.InetAddress;
  import java.net.InetSocketAddress;
  import javax.annotation.Nullable;
  
  /**
   * This class is internal and is hence not for public use. Its APIs are unstable and can change at
   * any time.
   */
  public final class InetSocketAddressUtil {
  
    @Nullable
    public static String getNetworkType(
        @Nullable InetSocketAddress address, @Nullable InetSocketAddress otherAddress) {
      if (address == null) {
        address = otherAddress;
      }
      if (address == null) {
        return null;
      }
      InetAddress remoteAddress = address.getAddress();
      if (remoteAddress instanceof Inet4Address) {
        return "ipv4";
      } else if (remoteAddress instanceof Inet6Address) {
        return "ipv6";
      }
      return null;
    }
  
    @Nullable
    public static String getIpAddress(@Nullable InetSocketAddress address) {
      if (address == null) {
        return null;
      }
      InetAddress remoteAddress = address.getAddress();
      if (remoteAddress == null) {
        return null;
      }
      return remoteAddress.getHostAddress();
    }
  
    @Nullable
    public static Integer getPort(@Nullable InetSocketAddress address) {
      if (address == null) {
        return null;
      }
      return address.getPort();
    }
  
    private InetSocketAddressUtil() {}
  }
  