OpenSSL::SSL::SSLSocket#blocking

# File tmp/rubies/ruby-4.1.0-preview1/ext/openssl/lib/openssl/ssl.rb, line 386
        def blocking(timeout = self.timeout)
  if timeout
    remaining = timeout
    start = Process.clock_gettime(Process::CLOCK_MONOTONIC)
  end

  while true
    ret = yield
    if :wait_readable == ret
      io.wait_readable(remaining) or raise IO_TimeoutError,
        "Timed out while waiting to become readable!"
    elsif :wait_writable == ret
      io.wait_writable(remaining) or raise IO_TimeoutError,
        "Timed out while waiting to become writable!"
    else
      return ret
    end

    if timeout
      now = Process.clock_gettime(Process::CLOCK_MONOTONIC)
      remaining = [0, timeout - (now - start)].max
    end
  end
end