001/*
002 * Copyright 2002-2013 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.web.socket;
018
019import java.util.List;
020
021/**
022 * An interface for WebSocket handlers that support sub-protocols as defined in RFC 6455.
023 *
024 * @author Rossen Stoyanchev
025 * @since 4.0
026 * @see WebSocketHandler
027 * @see <a href="https://tools.ietf.org/html/rfc6455#section-1.9">RFC-6455 section 1.9</a>
028 */
029public interface SubProtocolCapable {
030
031        /**
032         * Return the list of supported sub-protocols.
033         */
034        List<String> getSubProtocols();
035
036}