001/* 002 * Copyright 2002-2016 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.handler; 018 019import java.io.IOException; 020 021import org.springframework.web.socket.BinaryMessage; 022import org.springframework.web.socket.CloseStatus; 023import org.springframework.web.socket.WebSocketHandler; 024import org.springframework.web.socket.WebSocketSession; 025 026/** 027 * A convenient base class for {@link WebSocketHandler} implementations 028 * that process text messages only. 029 * 030 * <p>Binary messages are rejected with {@link CloseStatus#NOT_ACCEPTABLE}. 031 * All other methods have empty implementations. 032 * 033 * @author Rossen Stoyanchev 034 * @author Phillip Webb 035 * @since 4.0 036 */ 037public class TextWebSocketHandler extends AbstractWebSocketHandler { 038 039 @Override 040 protected void handleBinaryMessage(WebSocketSession session, BinaryMessage message) { 041 try { 042 session.close(CloseStatus.NOT_ACCEPTABLE.withReason("Binary messages not supported")); 043 } 044 catch (IOException ex) { 045 // ignore 046 } 047 } 048 049}