client =
      clientTestRule
        .newClientBuilder()
        .socketFactory(
          object : DelegatingSocketFactory(getDefault()) {
            @Throws(IOException::class)
            override fun configureSocket(socket: Socket): Socket {
              socket.setSendBufferSize(SOCKET_BUFFER_SIZE)
              socket.setReceiveBufferSize(SOCKET_BUFFER_SIZE)
              return socket
            }
          },

    val trustManager = client.x509TrustManager!!

    val delegatingSocketFactory =
      object : DelegatingSSLSocketFactory(sslSocketFactory) {
        override fun configureSocket(sslSocket: SSLSocket): SSLSocket =
          object : DelegatingSSLSocket(sslSocket) {
            override fun getApplicationProtocol(): String = throw UnsupportedOperationException()
          }
      }

    cipherSuite: CipherSuite,
  ): SSLSocketFactory {
    return object : DelegatingSSLSocketFactory(sslSocketFactory) {
      override fun configureSocket(sslSocket: SSLSocket): SSLSocket {
        sslSocket.enabledCipherSuites = arrayOf(cipherSuite.javaName)
        return super.configureSocket(sslSocket)
      }
    }
  }

  private class RecordingSSLSocketFactory(
    delegate: SSLSocketFactory,