* be cached and cause other types to fail even though they may
                 * not be the authority for the name. For example, if a WINS lookup
                 * for FOO fails and caches unknownAddress for FOO, a subsequent
                 * lookup for FOO using BCAST should not fail because of that
                 * name cached from WINS.
                 *

   */
  public static Throwable getRootCause(Throwable throwable) {
    // Keep a second pointer that slowly walks the causal chain. If the fast pointer ever catches
    // the slower pointer, then there's a loop.
    Throwable slowPointer = throwable;
    boolean advanceSlowPointer = false;

    Throwable cause;
    while ((cause = throwable.getCause()) != null) {

// and options for listing keys.
type ListRequest struct {
	// Prefix is an optional prefix for filtering names.
	// A list operation only returns elements that match
	// this prefix.
	// An empty prefix matches any value.
	Prefix string

	// ContinueAt is the name of the element from where
	// a listing should continue. It allows paginated
	// listings.
	ContinueAt string

	nameSize   = 100 // Max length of the name field in USTAR format
	prefixSize = 155 // Max length of the prefix field in USTAR format

	// Max length of a special file (PAX header, GNU long name or link).
	// This matches the limit used by libarchive.
	maxSpecialFileSize = 1 << 20
)

// blockPadding computes the number of bytes needed to pad offset up to the
// nearest block edge where 0 <= n < blockSize.

			if current.name == "" {
				topEntries[i] = entry
				current = entry
				agree++
				continue
			}
			// If exact match, we agree.
			if _, ok := current.matches(&entry, true); ok {
				topEntries[i] = entry
				agree++
				continue
			}
			// If only the name matches we didn't agree, but add it for resolution.
			if entry.name == current.name {
				topEntries[i] = entry
				continue
			}

		if bytes.Equal(tr.blk[:], zeroBlock[:]) {
			return nil, nil, io.EOF // normal EOF; exactly 2 block of zeros read
		}
		return nil, nil, ErrHeader // Zero block and then non-zero block
	}

	// Verify the header matches a known format.
	format := tr.blk.getFormat()
	if format == FormatUnknown {
		return nil, nil, ErrHeader
	}

	var p parser
	hdr := new(Header)

	// Unpack the V7 header.
	v7 := tr.blk.toV7()

And be compatible with all of them at the same time.

///

Create a utility function to hash a password coming from the user.

And another utility to verify if a received password matches the hash stored.

And another one to authenticate and return a user.

{* ../../docs_src/security/tutorial004_an_py310.py hl[8,49,56:57,60:61,70:76] *}

/// note

		statusCode: 400,
		cause:      err,
	}
}

func errAmbiguousFieldName(err error) *s3Error {
	return &s3Error{
		code:       "AmbiguousFieldName",
		message:    "Field name matches to multiple fields in the file. Check the SQL expression and the file, and try again.",
		statusCode: 400,
		cause:      err,
	}
}

func errIntegerOverflow(err error) *s3Error {
	return &s3Error{

@GwtIncompatible
@J2ktIncompatible
@J2ObjCIncompatible // com.google.common.reflect.ClassPath
public abstract class AbstractPackageSanityTests extends TestCase {

  /**
   * A predicate that matches classes with an underscore in the class name. This can be used with
   * {@link #ignoreClasses} to exclude generated classes, such as the {@code AutoValue_Foo} classes

Using the **SNI extension** discussed above, the TLS Termination Proxy would check which of the TLS (HTTPS) certificates available it should use for this connection, using the one that matches the domain expected by the client.

In this case, it would use the certificate for `someapp.example.com`.

<img src="/img/deployment/https/https03.drawio.svg">