*/
class Http2FlowControlConnectionListener : ConnectionListener(), FlowControlListener {
  val start = System.currentTimeMillis()

  override fun receivingStreamWindowChanged(
    streamId: Int,
    windowCounter: WindowCounter,
    bufferSize: Long,
  ) {
    println("${System.currentTimeMillis() - start},$streamId,${windowCounter.unacknowledged},$bufferSize")
  }

import okhttp3.dnsoverhttps.DohProviders.providers
import org.conscrypt.OpenSSLProvider

private fun runBatch(
  dnsProviders: List<DnsOverHttps>,
  names: List<String>,
) {
  var time = System.currentTimeMillis()
  for (dns in dnsProviders) {
    println("Testing ${dns.url}")
    for (host in names) {
      print("$host: ")
      System.out.flush()
      try {
        val results = dns.lookup(host)

    val realChain = chain as RealInterceptorChain
    val exchange = realChain.exchange!!
    val request = realChain.request
    val requestBody = request.body
    val sentRequestMillis = System.currentTimeMillis()

    var invokeStartEvent = true
    var responseBuilder: Response.Builder? = null
    var sendRequestException: IOException? = null
    try {
      exchange.writeRequestHeaders(request)

import okhttp3.Request
import okhttp3.Response
import okhttp3.internal.concurrent.TaskRunner
import okhttp3.internal.connection.RealConnection

internal fun parseCookie(
  currentTimeMillis: Long,
  url: HttpUrl,
  setCookie: String,
): Cookie? = Cookie.parse(currentTimeMillis, url, setCookie)

internal fun cookieToString(
  cookie: Cookie,
  forObsoleteRfc2965: Boolean,
): String = cookie.toString(forObsoleteRfc2965)

   *     positive values yield dates in the future.
   */
  private fun formatDate(
    delta: Long,
    timeUnit: TimeUnit,
  ): String? {
    return formatDate(Date(System.currentTimeMillis() + timeUnit.toMillis(delta)))
  }

  private fun formatDate(date: Date): String? {
    val rfc1123: DateFormat = SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss zzz", Locale.US)