fun retryTlsHandshake(e: IOException): Boolean =
  when {
    // If there was a protocol problem, don't recover.
    e is ProtocolException -> false

    // If there was an interruption or timeout (SocketTimeoutException), don't recover.
    // For the socket connect timeout case we do not try the same host with a different
    // ConnectionSpec: we assume it is unreachable.
    e is InterruptedIOException -> false