import java.net.InetAddress;
import java.text.ParseException;
import org.jspecify.annotations.Nullable;

/**
 * A syntactically valid host specifier, suitable for use in a URI. This may be either a numeric IP
 * address in IPv4 or IPv6 notation, or a domain name.
 *
 * <p>Because this class is intended to represent host specifiers which can reasonably be used in a

        }
    }

    /**
     * Formats an IP address string for use in a URL.
     * IPv6 addresses are wrapped in brackets, IPv4 addresses are returned as-is.
     *
     * @param address the IP address string to format
     * @return the formatted address (IPv6 with brackets, IPv4 unchanged)
     */
    public static String formatForUrl(final String address) {
        if (address == null) {
            return null;

				// Number of probes.
				// ~ cat /proc/sys/net/ipv4/tcp_keepalive_probes (defaults to 9, we reduce it to 5)
				_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPCNT, 5)

				// Wait time after successful probe in seconds.
				// ~ cat /proc/sys/net/ipv4/tcp_keepalive_intvl (defaults to 75 secs, we reduce it to 15 secs)

    assertThat(recordedRequest.url.host).isEqualTo("2607:f8b0:400b:804::200e")
    assertThat(recordedRequest.handshakeServerNames).isEmpty()
  }

  /** No SNI for literal IPv4 addresses. */
  @Test
  fun ipv4() {
    val recordedRequest = requestToHostnameViaProxy("76.223.91.57")
    assertThat(recordedRequest.url.host).isEqualTo("76.223.91.57")
    assertThat(recordedRequest.handshakeServerNames).isEmpty()
  }

      ),
    ).isEqualTo("255.255.255.255")
  }

  private fun decodeIpv6(input: String): ByteArray? = decodeIpv6(input, 0, input.length)

  @Test
  fun testToCanonicalHost() {
    // IPv4
    assertThat("127.0.0.1".toCanonicalHost()).isEqualTo("127.0.0.1")
    assertThat("1.2.3.4".toCanonicalHost()).isEqualTo("1.2.3.4")

    // IPv6
    assertThat("::1".toCanonicalHost()).isEqualTo("::1")

     * @return IP address
     */
    public InetAddress getAddress() {
        return address;
    }

    /**
     * Check if this is an IPv6 address
     *
     * @return true if IPv6, false if IPv4
     */
    public boolean isIpv6() {
        return ipv6;
    }

    /**
     * Check if RSS is supported
     *
     * @return true if RSS capable
     */

#!/bin/bash

# opensuse 15 has a missing dep for systemd

if which zypper > /dev/null ; then
    sudo zypper install -y insserv-compat
fi

if [ -e /etc/sysctl.d/99-gce.conf ]; then
  # The GCE defaults disable IPv4 forwarding, which breaks the Docker
  # build. Workaround this by renaming the file so that it is executed
  # earlier than our own overrides.
  #
  # This ultimately needs to be fixed at the image level - see infra
  # issue 15654.

#!/bin/bash

# opensuse 15 has a missing dep for systemd

if which zypper > /dev/null ; then
    sudo zypper install -y insserv-compat
fi

if [ -e /etc/sysctl.d/99-gce.conf ]; then
  # The GCE defaults disable IPv4 forwarding, which breaks the Docker
  # build. Workaround this by renaming the file so that it is executed
  # earlier than our own overrides.
  #
  # This ultimately needs to be fixed at the image level - see infra
  # issue 15654.

    /** Kerberos protocol version */
    String KERBEROS_VERSION = "5";

    /** Kerberos AP-REQ message type */
    String KERBEROS_AP_REQ = "14";

    /** Address family: Internet (IPv4) */
    int AF_INTERNET = 2;
    /** Address family: CHANET */
    int AF_CHANET = 5;
    /** Address family: XNS */
    int AF_XNS = 6;
    /** Address family: ISO */
    int AF_ISO = 7;

    # Docker on Windows doesn't support the `host` networking mode, and so
    # port-forwarding is required for the container to detect it's running on GCE.
    export IP_ADDR=$(powershell -command "(Get-NetIPAddress -AddressFamily IPv4 -InterfaceAlias 'vEthernet (nat)').IPAddress")
    netsh interface portproxy add v4tov4 listenaddress=$IP_ADDR listenport=80 connectaddress=169.254.169.254 connectport=80
    # A local firewall rule for the container is added in