ServerCookieDecoder Class — netty Architecture

Source Code

codec-http/src/main/java/io/netty/handler/codec/http/cookie/ServerCookieDecoder.java lines 37–175

public final class ServerCookieDecoder extends CookieDecoder {

    private static final String RFC2965_VERSION = "$Version";

    private static final String RFC2965_PATH = "$" + CookieHeaderNames.PATH;

    private static final String RFC2965_DOMAIN = "$" + CookieHeaderNames.DOMAIN;

    private static final String RFC2965_PORT = "$Port";

    /**
     * Strict decoder that validates that name and value chars are in the valid scope
     * defined in RFC6265
     */
    public static final ServerCookieDecoder STRICT = new ServerCookieDecoder(true);

    /**
     * Lax instance that doesn't validate name and value
     */
    public static final ServerCookieDecoder LAX = new ServerCookieDecoder(false);

    private ServerCookieDecoder(boolean strict) {
        super(strict);
    }

    /**
     * Decodes the specified {@code Cookie} HTTP header value into a {@link Cookie}. Unlike {@link #decode(String)},
     * this includes all cookie values present, even if they have the same name.
     *
     * @return the decoded {@link Cookie}
     */
    public List<Cookie> decodeAll(String header) {
        List<Cookie> cookies = new ArrayList<Cookie>();
        decode(cookies, header);
        return Collections.unmodifiableList(cookies);
    }

    /**
     * Decodes the specified {@code Cookie} HTTP header value into a {@link Cookie}.
     *
     * @return the decoded {@link Cookie}
     */
    public Set<Cookie> decode(String header) {
        Set<Cookie> cookies = new TreeSet<Cookie>();
        decode(cookies, header);
        return cookies;
    }

    /**
     * Decodes the specified {@code Cookie} HTTP header value into a {@link Cookie}.
     */
    private void decode(Collection<? super Cookie> cookies, String header) {
        final int headerLen = checkNotNull(header, "header").length();

        if (headerLen == 0) {
            return;
        }

        int i = 0;

        boolean rfc2965Style = false;
        if (header.regionMatches(true, 0, RFC2965_VERSION, 0, RFC2965_VERSION.length())) {
            // RFC 2965 style cookie, move to after version value
            i = header.indexOf(';') + 1;
            rfc2965Style = true;
        }

        loop: for (;;) {

            // Skip spaces and separators.
            for (;;) {
                if (i == headerLen) {
                    break loop;
                }
                char c = header.charAt(i);
                if (c == '\t' || c == '\n' || c == 0x0b || c == '\f'
                        || c == '\r' || c == ' ' || c == ',' || c == ';') {
                    i++;
                    continue;
                }
                break;