expectedCipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA.javaName)
    if (listOf<String>(*socket.supportedCipherSuites).contains("TLS_FALLBACK_SCSV")) {
      expectedCipherSuites.add("TLS_FALLBACK_SCSV")
    }
    assertThat(socket.enabledCipherSuites)
      .containsExactly(*expectedCipherSuites.toTypedArray())
  }

  @Test
  fun tls_explicitCiphers() {

    @JvmField val TLS_EMPTY_RENEGOTIATION_INFO_SCSV = init("TLS_EMPTY_RENEGOTIATION_INFO_SCSV", 0x00ff)

    @JvmField val TLS_FALLBACK_SCSV = init("TLS_FALLBACK_SCSV", 0x5600)

    @JvmField val TLS_ECDH_ECDSA_WITH_NULL_SHA = init("TLS_ECDH_ECDSA_WITH_NULL_SHA", 0xc001)

    @JvmField val TLS_ECDH_ECDSA_WITH_RC4_128_SHA = init("TLS_ECDH_ECDSA_WITH_RC4_128_SHA", 0xc002)

    // cipher is added to signal that a protocol fallback has taken place.
    val supportedCipherSuites = sslSocket.supportedCipherSuites
    val indexOfFallbackScsv =
      supportedCipherSuites.indexOf(
        "TLS_FALLBACK_SCSV",
        CipherSuite.ORDER_BY_NAME,
      )
    if (isFallback && indexOfFallbackScsv != -1) {
      cipherSuitesIntersection =
        cipherSuitesIntersection.concat(

    introduction to this new API.

 *  New: APIs to iterate and selectively clear the response cache.
 *  New: Support for SOCKS proxies.
 *  New: Support for `TLS_FALLBACK_SCSV`.
 *  New: Update HTTP/2 support to `h2-16` and `hpack-10`.
 *  New: APIs to prevent retrying non-idempotent requests.
 *  Fix: Drop NPN support. Going forward we support ALPN only.