CloseWebSocketFrame Class — netty Architecture

Source Code

codec-http/src/main/java/io/netty/handler/codec/http/websocketx/CloseWebSocketFrame.java lines 26–206

public class CloseWebSocketFrame extends WebSocketFrame {

    /**
     * Creates a new empty close frame.
     */
    public CloseWebSocketFrame() {
        super(Unpooled.buffer(0));
    }

    /**
     * Creates a new empty close frame with closing status code and reason text
     *
     * @param status
     *            Status code as per <a href="https://tools.ietf.org/html/rfc6455#section-7.4">RFC 6455</a>. For
     *            example, <tt>1000</tt> indicates normal closure.
     */
    public CloseWebSocketFrame(WebSocketCloseStatus status) {
        this(requireValidStatusCode(status.code()), status.reasonText());
    }

    /**
     * Creates a new empty close frame with closing status code and reason text
     *
     * @param status
     *            Status code as per <a href="https://tools.ietf.org/html/rfc6455#section-7.4">RFC 6455</a>. For
     *            example, <tt>1000</tt> indicates normal closure.
     * @param reasonText
     *            Reason text. Set to null if no text.
     */
    public CloseWebSocketFrame(WebSocketCloseStatus status, String reasonText) {
        this(requireValidStatusCode(status.code()), reasonText);
    }

    /**
     * Creates a new empty close frame with closing status code and reason text
     *
     * @param statusCode
     *            Integer status code as per <a href="https://tools.ietf.org/html/rfc6455#section-7.4">RFC 6455</a>. For
     *            example, <tt>1000</tt> indicates normal closure.
     * @param reasonText
     *            Reason text. Set to null if no text.
     */
    public CloseWebSocketFrame(int statusCode, String reasonText) {
        this(true, 0, requireValidStatusCode(statusCode), reasonText);
    }

    /**
     * Creates a new close frame with no losing status code and no reason text
     *
     * @param finalFragment
     *            flag indicating if this frame is the final fragment
     * @param rsv
     *            reserved bits used for protocol extensions.
     */
    public CloseWebSocketFrame(boolean finalFragment, int rsv) {
        this(finalFragment, rsv, Unpooled.buffer(0));
    }

    /**
     * Creates a new close frame with closing status code and reason text
     *
     * @param finalFragment
     *            flag indicating if this frame is the final fragment
     * @param rsv
     *            reserved bits used for protocol extensions
     * @param statusCode
     *            Integer status code as per <a href="https://tools.ietf.org/html/rfc6455#section-7.4">RFC 6455</a>. For
     *            example, <tt>1000</tt> indicates normal closure.
     * @param reasonText
     *            Reason text. Set to null if no text.
     */
    public CloseWebSocketFrame(boolean finalFragment, int rsv, int statusCode, String reasonText) {
        super(finalFragment, rsv, newBinaryData(requireValidStatusCode(statusCode), reasonText));
    }

    private static ByteBuf newBinaryData(int statusCode, String reasonText) {
        if (reasonText == null) {
            reasonText = StringUtil.EMPTY_STRING;
        }

        ByteBuf binaryData = Unpooled.buffer(2 + reasonText.length());