override fun proxySelectEnd(
    call: Call,
    url: HttpUrl,
    proxies: List<Proxy>,
  ) {
    logWithTime("proxySelectEnd: $proxies")
  }

  override fun dnsStart(
    call: Call,
    domainName: String,
  ) {
    logWithTime("dnsStart: $domainName")
  }

  override fun dnsEnd(
    call: Call,
    domainName: String,
    inetAddressList: List<InetAddress>,
  ) {

	if trace.hasNetHooks() {
		nt := &nettrace.Trace{
			ConnectStart: trace.ConnectStart,
			ConnectDone:  trace.ConnectDone,
		}
		if trace.DNSStart != nil {
			nt.DNSStart = func(name string) {
				trace.DNSStart(DNSStartInfo{Host: name})
			}
		}
		if trace.DNSDone != nil {
			nt.DNSDone = func(netIPs []any, coalesced bool, err error) {
				addrs := make([]net.IPAddr, len(netIPs))

  @Override public void callStart(Call call) {
    printEvent("callStart");
  }

  @Override public void callEnd(Call call) {
    printEvent("callEnd");
  }

  @Override public void dnsStart(Call call, String domainName) {
    printEvent("dnsStart");
  }

  @Override public void dnsEnd(Call call, String domainName, List<InetAddress> inetAddressList) {
    printEvent("dnsEnd");
  }

  ...
}
```

type LookupIPAltResolverKey struct{}

// Trace contains a set of hooks for tracing events within
// the net package. Any specific hook may be nil.
type Trace struct {
	// DNSStart is called with the hostname of a DNS lookup
	// before it begins.
	DNSStart func(name string)

	// DNSDone is called after a DNS lookup completes (or fails).
	// The coalesced parameter is whether singleflight de-duped

    proxies: List<Proxy>,
  ) {
    logWithTime("proxySelectEnd: $proxies")

    delegate.proxySelectEnd(call, url, proxies)
  }

  override fun dnsStart(
    call: Call,
    domainName: String,
  ) {
    logWithTime("dnsStart: $domainName")

    delegate.dnsStart(call, domainName)
  }

  override fun dnsEnd(
    call: Call,
    domainName: String,
    inetAddressList: List<InetAddress>,
  ) {

  }

  override fun proxySelectEnd(
    url: HttpUrl,
    proxies: List<Proxy>,
  ) {
    eventListener.proxySelectEnd(call, url, proxies)
  }

  override fun dnsStart(socketHost: String) {
    eventListener.dnsStart(call, socketHost)
  }

  override fun dnsEnd(
    socketHost: String,
    result: List<InetAddress>,
  ) {
    eventListener.dnsEnd(call, socketHost, result)
  }

    call: Call,
    url: HttpUrl,
    proxies: List<Proxy>,
  ) = logEvent(ProxySelectEnd(System.nanoTime(), call, url, proxies))

  override fun dnsStart(
    call: Call,
    domainName: String,
  ) = logEvent(DnsStart(System.nanoTime(), call, domainName))

  override fun dnsEnd(
    call: Call,
    domainName: String,
    inetAddressList: List<InetAddress>,

    val url: HttpUrl,
    val proxies: List<Proxy>?,
  ) : CallEvent() {
    override fun closes(event: CallEvent): Boolean = event is ProxySelectStart && call == event.call && url == event.url
  }

  data class DnsStart(
    override val timestampNs: Long,
    override val call: Call,
    val domainName: String,
  ) : CallEvent()

  data class DnsEnd(
    override val timestampNs: Long,
    override val call: Call,

  fun isCanceled(): Boolean

  fun candidateConnection(): RealConnection?

  fun proxySelectStart(url: HttpUrl)

  fun proxySelectEnd(
    url: HttpUrl,
    proxies: List<Proxy>,
  )

  fun dnsStart(socketHost: String)

  fun dnsEnd(
    socketHost: String,
    result: List<InetAddress>,
  )

  override fun proxySelectStart(url: HttpUrl) {
  }

  override fun proxySelectEnd(
    url: HttpUrl,
    proxies: List<Proxy>,
  ) {
  }

  override fun dnsStart(socketHost: String) {
  }

  override fun dnsEnd(
    socketHost: String,
    result: List<InetAddress>,
  ) {
  }