HpackHeader Class — netty Architecture

Source Code

microbench/src/main/java/io/netty/handler/codec/http2/HpackHeader.java lines 44–84

@UnstableApi
public final class HpackHeader {
    private static final String ALPHABET =
            "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_";

    final CharSequence name;
    final CharSequence value;

    private HpackHeader(byte[] name, byte[] value) {
        this.name = new AsciiString(name, false);
        this.value = new AsciiString(value, false);
    }

    /**
     * Creates a number of random headers with the given name/value lengths.
     */
    static List<HpackHeader> createHeaders(int numHeaders, int nameLength, int valueLength,
                                           boolean limitToAscii) {
        List<HpackHeader> hpackHeaders = new ArrayList<HpackHeader>(numHeaders);
        for (int i = 0; i < numHeaders; ++i) {
            // Force always ascii for header names
            byte[] name = randomBytes(new byte[nameLength], true);
            byte[] value = randomBytes(new byte[valueLength], limitToAscii);
            hpackHeaders.add(new HpackHeader(name, value));
        }
        return hpackHeaders;
    }

    private static byte[] randomBytes(byte[] bytes, boolean limitToAscii) {
        Random r = new Random();
        if (limitToAscii) {
            for (int index = 0; index < bytes.length; ++index) {
                int charIndex = r.nextInt(ALPHABET.length());
                bytes[index] = (byte) ALPHABET.charAt(charIndex);
            }
        } else {
            r.nextBytes(bytes);
        }
        return bytes;
    }
}