assertFailsWith<IOException> {
      getResponse(newRequest("/foo"))
    }.also { expected ->
      when (expected) {
        is SSLHandshakeException -> {
          // Allow conscrypt to fail in different ways
          if (!platform.isConscrypt()) {
            assertThat(expected.cause!!).isInstanceOf<CertificateException>()
          }
        }
        is TlsFatalAlert -> {}
        else -> throw expected
      }