private int clientVarCounter;
    private String hostAlias;

    public BlockingHttpServer() throws IOException {
        this(120_000);
    }

    public BlockingHttpServer(int timeoutMs) throws IOException {
        // Use an OS selected port
        this(HttpServer.create(new InetSocketAddress(0), 10), timeoutMs, Scheme.HTTP);
    }

    public void setHostAlias(String hostAlias) {
        this.hostAlias = hostAlias;
    }

func hostsEntriesFromHostAliases(hostAliases []v1.HostAlias) []byte {
	if len(hostAliases) == 0 {
		return []byte{}
	}

	var buffer bytes.Buffer
	buffer.WriteString("\n")
	buffer.WriteString("# Entries added by HostAliases.\n")
	// for each IP, write all aliases onto single line in hosts file
	for _, hostAlias := range hostAliases {
		buffer.WriteString(fmt.Sprintf("%s\t%s\n", hostAlias.IP, strings.Join(hostAlias.Hostnames, "\t")))
	}

func TestNodeHostsFileContent(t *testing.T) {
	testCases := []struct {
		hostsFileName            string
		hostAliases              []v1.HostAlias
		rawHostsFileContent      string
		expectedHostsFileContent string
	}{
		{
			hostsFileName: "hosts_test_file1",
			hostAliases:   []v1.HostAlias{},
			rawHostsFileContent: `# hosts file for testing.
127.0.0.1	localhost
::1	localhost ip6-localhost ip6-loopback
fe00::0	ip6-localnet

		return err
	}
	if err := s.AddGeneratedConversionFunc((*v1.HostAlias)(nil), (*core.HostAlias)(nil), func(a, b interface{}, scope conversion.Scope) error {
		return Convert_v1_HostAlias_To_core_HostAlias(a.(*v1.HostAlias), b.(*core.HostAlias), scope)
	}); err != nil {
		return err
	}
	if err := s.AddGeneratedConversionFunc((*core.HostAlias)(nil), (*v1.HostAlias)(nil), func(a, b interface{}, scope conversion.Scope) error {

func (in *HostAlias) DeepCopyInto(out *HostAlias) {
	*out = *in
	if in.Hostnames != nil {
		in, out := &in.Hostnames, &out.Hostnames
		*out = make([]string, len(*in))
		copy(*out, *in)
	}
	return
}

// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HostAlias.
func (in *HostAlias) DeepCopy() *HostAlias {
	if in == nil {
		return nil

func (in *HostAlias) DeepCopyInto(out *HostAlias) {
	*out = *in
	if in.Hostnames != nil {
		in, out := &in.Hostnames, &out.Hostnames
		*out = make([]string, len(*in))
		copy(*out, *in)
	}
	return
}

// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HostAlias.
func (in *HostAlias) DeepCopy() *HostAlias {
	if in == nil {
		return nil

var xxx_messageInfo_HTTPHeader proto.InternalMessageInfo

func (m *HostAlias) Reset()      { *m = HostAlias{} }
func (*HostAlias) ProtoMessage() {}
func (*HostAlias) Descriptor() ([]byte, []int) {
	return fileDescriptor_6c07b07c062484ab, []int{71}
}
func (m *HostAlias) XXX_Unmarshal(b []byte) error {
	return m.Unmarshal(b)
}
func (m *HostAlias) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
	b = b[:cap(b)]

	}

	return allErrs
}

func ValidateHostAliases(hostAliases []core.HostAlias, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	for i, hostAlias := range hostAliases {
		allErrs = append(allErrs, validation.IsValidIP(fldPath.Index(i).Child("ip"), hostAlias.IP)...)
		for j, hostname := range hostAlias.Hostnames {

type PodSchedulingGate struct {
	// Name of the scheduling gate.
	// Each scheduling gate must have a unique name field.
	Name string
}

// HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the
// pod's hosts file.
type HostAlias struct {
	IP        string
	Hostnames []string
}

// Sysctl defines a kernel parameter to be set
type Sysctl struct {

  optional string name = 1;

  // The header field value
  optional string value = 2;
}

// HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the
// pod's hosts file.
message HostAlias {
  // IP address of the host file entry.
  // +required
  optional string ip = 1;

  // Hostnames for the above IP address.