Class HpackUtil

java.lang.Object

io.netty.handler.codec.http2.HpackUtil

final class HpackUtil
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static enum	HpackUtil.IndexType

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final byte[]	HUFFMAN_CODE_LENGTHS
(package private) static final int[]	HUFFMAN_CODES
(package private) static final int	HUFFMAN_EOS

Constructor Summary

Constructors

Modifier	Constructor	Description
private	HpackUtil()

Method Summary

Modifier and Type	Method	Description
(package private) static int	equalsConstantTime(CharSequence s1, CharSequence s2)	Compare two CharSequence objects without leaking timing information.
(package private) static boolean	equalsVariableTime(CharSequence s1, CharSequence s2)	Compare two CharSequences.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

HUFFMAN_CODES

static final int[] HUFFMAN_CODES

HUFFMAN_CODE_LENGTHS

static final byte[] HUFFMAN_CODE_LENGTHS

HUFFMAN_EOS

static final int HUFFMAN_EOS

See Also:

• Constant Field Values

Constructor Details

HpackUtil

private HpackUtil()

Method Details

equalsConstantTime

static int equalsConstantTime(CharSequence s1,
 CharSequence s2)

Compare two CharSequence objects without leaking timing information.

The int return type is intentional and is designed to allow cascading of constant time operations:

    String s1 = "foo";
    String s2 = "foo";
    String s3 = "foo";
    String s4 = "goo";
    boolean equals = (equalsConstantTime(s1, s2) invalid input: '&' equalsConstantTime(s3, s4)) != 0;

Parameters:

s1 - the first value.

s2 - the second value.

Returns:

0 if not equal. 1 if equal.

equalsVariableTime

static boolean equalsVariableTime(CharSequence s1,
 CharSequence s2)

Compare two CharSequences.

Parameters:

s1 - the first value.

s2 - the second value.

Returns:

false if not equal. true if equal.