java.net.Authenticator.setDefault(null)
    System.clearProperty("proxyHost")
    System.clearProperty("proxyPort")
    System.clearProperty("http.proxyHost")
    System.clearProperty("http.proxyPort")
    System.clearProperty("https.proxyHost")
    System.clearProperty("https.proxyPort")
    if (cache != null) {
      cache!!.delete()
    }
  }

  @Test
  fun requestHeaders() {

  private fun configureClientAndServerProxies(http2: Boolean) {
    server.useHttps(handshakeCertificates.sslSocketFactory())
    server.protocols =
      when {
        http2 -> listOf(Protocol.HTTP_2, Protocol.HTTP_1_1)
        else -> listOf(Protocol.HTTP_1_1)
      }
    server.enqueue(MockResponse(inTunnel = true))
    client =
      client.newBuilder()

HSPLokhttp3/internal/http2/Hpack;-><clinit>()V
HSPLokhttp3/internal/http2/Hpack;-><init>()V
HSPLokhttp3/internal/http2/Hpack;->checkLowercase(Lokio/ByteString;)Lokio/ByteString;
HSPLokhttp3/internal/http2/Http2;-><clinit>()V
HSPLokhttp3/internal/http2/Http2;-><init>()V
HSPLokhttp3/internal/http2/Http2Connection$Builder;-><init>(ZLokhttp3/internal/concurrent/TaskRunner;)V

    when (responseCode) {
      HttpURLConnection.HTTP_PROXY_AUTH -> {
        builder.addHeader("Proxy-Authenticate: Basic realm=\"protected area\"")
      }

      HttpURLConnection.HTTP_UNAUTHORIZED -> {
        builder.addHeader("WWW-Authenticate: Basic realm=\"protected area\"")
      }

      HttpURLConnection.HTTP_NO_CONTENT, HttpURLConnection.HTTP_RESET -> {

// cat : https://en.wikipedia.org/wiki/.cat
cat

// cc : https://en.wikipedia.org/wiki/.cc
cc

// cd : https://en.wikipedia.org/wiki/.cd
// see also: https://www.nic.cd/domain/insertDomain_2.jsp?act=1
cd
gov.cd

// cf : https://en.wikipedia.org/wiki/.cf
cf

// cg : https://en.wikipedia.org/wiki/.cg
cg

// ch : https://en.wikipedia.org/wiki/.ch
ch