If one or more drives are offline at the start of a PutObject or NewMultipartUpload operation the object will have additional data protection bits added automatically to provide additional safety for these objects.

### High availability

// HTTP requests made by all clients
type HTTPStats struct {
	s3RequestsInQueue       int32 // ref: https://golang.org/pkg/sync/atomic/#pkg-note-BUG
	_                       int32 // For 64 bits alignment
	s3RequestsIncoming      uint64
	rejectedRequestsAuth    uint64
	rejectedRequestsTime    uint64
	rejectedRequestsHeader  uint64
	rejectedRequestsInvalid uint64
	currentS3Requests       HTTPAPIStats

}

// asciiSet is a 32-byte value, where each bit represents the presence of a
// given ASCII character in the set. The 128-bits of the lower 16 bytes,
// starting with the least-significant bit of the lowest word to the
// most-significant bit of the highest word, map to the full range of all
// 128 ASCII characters. The 128-bits of the upper 16 bytes will be zeroed,
// ensuring that any non-ASCII character will be reported as not in the set.

        },
        "dutch_stemmer": {
          "type":       "stemmer",
          "language":   "dutch"
        },
        "dutch_override": {
          "type":       "stemmer_override",
          "rules": ["fiets=>fiets", "bromfiets=>bromfiets", "ei=>eier", "kind=>kinder"]
        },
        "english_keywords": {
          "type":       "keyword_marker",
          "keywords": ["sample"]
        },
        "finnish_stop": {

        },
        "dutch_stemmer": {
          "type":       "stemmer",
          "language":   "dutch"
        },
        "dutch_override": {
          "type":       "stemmer_override",
          "rules": ["fiets=>fiets", "bromfiets=>bromfiets", "ei=>eier", "kind=>kinder"]
        },
        "english_keywords": {
          "type":       "keyword_marker",
          "keywords": ["sample"]
        },
        "finnish_stop": {

        request.writeBytesWireFormat(buffer, 0);

        // Then
        int readFilter = SMBUtil.readInt4(buffer, 24);
        assertEquals(allFilters, readFilter);
        assertEquals(0xFFF, readFilter); // All 12 bits set
    }

    @Test
    @DisplayName("Should handle different buffer sizes from configuration")
    void testDifferentBufferSizes() {
        // Given
        Configuration config = mock(Configuration.class);

But in this case, the same **FastAPI** application will handle the API and the authentication.

So, let's review it from that simplified point of view:

* The user types the `username` and `password` in the frontend, and hits `Enter`.
* The frontend (running in the user's browser) sends that `username` and `password` to a specific URL in our API (declared with `tokenUrl="token"`).

  // From RFC 3720, Section 12.1, the polynomial generator is 0x11EDC6F41.
  // We calculate the constant below by:
  //   1. Omitting the most significant bit (because it's always 1). => 0x1EDC6F41
  //   2. Flipping the bits of the constant so we can process a byte at a time. => 0x82F63B78
  private static final int CRC32C_GENERATOR = 0x1EDC6F41; // 0x11EDC6F41
  private static final int CRC32C_GENERATOR_FLIPPED = Integer.reverse(CRC32C_GENERATOR);

import java.net.UnknownHostException;

import jcifs.smb1.util.LogStream;
import jcifs.smb1.util.transport.TransportException;

/**
 * This InputStream can read bytes from a file on an SMB file server. Offsets are 64 bits.
 */

public class SmbFileInputStream extends InputStream {

    private long fp;
    private final int readSize;
    private int openFlags;
    private final int access;
    private byte[] tmp = new byte[1];

  @Override
  public HashCode hashBytes(byte[] input, int off, int len) {
    checkPositionIndexes(off, off + len, input.length);
    return HashCode.fromLong(fingerprint(input, off, len));
  }

  @Override
  public int bits() {
    return 64;
  }

  @Override
  public String toString() {
    return "Hashing.fingerprint2011()";
  }

  // End of public functions.

  @VisibleForTesting