OkHttpClient
        .Builder()
        .protocols(protocols as List<Protocol>)
    }.also { expected ->
      assertThat(expected.message).isEqualTo("protocols must not contain null")
    }
  }

  @Test fun spdy3IsRemovedFromProtocols() {
    val protocols =
      mutableListOf(
        Protocol.HTTP_1_1,
        Protocol.SPDY_3,
      )
    val client =
      OkHttpClient

        if (StringUtil.isNotBlank(value)) {
            return check(protocols, value);
        }
        return true;
    }

    /**
     * Checks if the given value matches any of the specified protocols.
     *
     * @param protocols the allowed protocols
     * @param value the URI string to validate
     * @return true if the value matches allowed protocols, false otherwise
     */

    }

    /**
     * Adds a new file protocol to the supported protocols list.
     * If the protocol already exists, it will not be added again.
     *
     * @param protocol the protocol name to add (without colon suffix)
     */
    public void addFileProtocol(final String protocol) {
        final String prefix = protocol + ":";

          .build()
      }
    assertThat(e).hasMessage("expected a null request body with 'Connection: upgrade'")
  }

  private fun enableTls(vararg protocols: Protocol) {
    client =
      client
        .newBuilder()
        .protocols(protocols.toList())
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,

    delegate.protocolNegotiationEnabled = protocolNegotiationEnabled
  }

  @JvmName("-deprecated_protocols")
  fun setProtocols(protocols: List<Protocol>) {
    delegate.protocols = protocols
  }

  @JvmName("-deprecated_protocols")
  fun protocols(): List<Protocol> = delegate.protocols

  fun useHttps(
    sslSocketFactory: SSLSocketFactory,
    tunnelProxy: Boolean,
  ) {

     *
     * @param protocols the protocols to use, in order of preference. If the list contains
     *     [Protocol.H2_PRIOR_KNOWLEDGE] then that must be the only protocol and HTTPS URLs will not
     *     be supported. Otherwise the list must contain [Protocol.HTTP_1_1]. The list must
     *     not contain null or [Protocol.HTTP_1_0].
     */
    fun protocols(protocols: List<Protocol>) =
      apply {

      .assertSuccessful()
      .assertCode(200)
  }

  private fun enableProtocol(protocol: Protocol) {
    enableTls()
    client =
      client
        .newBuilder()
        .protocols(listOf(protocol, Protocol.HTTP_1_1))
        .build()
    server1.protocols = client.protocols
    server2.protocols = client.protocols
  }

  private fun enableTls() {
    client =
      client

    enableTlsWithTunnel()
    server.protocols = Arrays.asList(Protocol.HTTP_1_1)
    responseBodyFail(Protocol.HTTP_1_1)
  }

  @Test
  fun responseBodyFailHttp2OverHttps() {
    platform.assumeHttp2Support()
    enableTlsWithTunnel()
    server.protocols = Arrays.asList(Protocol.HTTP_2, Protocol.HTTP_1_1)
    responseBodyFail(Protocol.HTTP_2)
  }

  @Test

      response!!.closeQuietly()
    }
  }

  private fun enableHttps() {
    enableHttpsAndAlpn(Protocol.HTTP_1_1)
  }

  private fun enableHttp2() {
    platform.assumeHttp2Support()
    enableHttpsAndAlpn(Protocol.HTTP_2, Protocol.HTTP_1_1)
  }

  private fun enableHttpsAndAlpn(vararg protocols: Protocol) {
    client =
      client
        .newBuilder()
        .sslSocketFactory(

     * Returns the concatenation of 8-bit, length prefixed protocol names.
     * http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-04#page-4
     */
    fun concatLengthPrefixed(protocols: List<Protocol>): ByteArray {
      val result = Buffer()
      for (protocol in alpnProtocolNames(protocols)) {
        result.writeByte(protocol.length)
        result.writeUtf8(protocol)
      }
      return result.readByteArray()
    }