45 lines
1.5 KiB
Java
45 lines
1.5 KiB
Java
/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.http.websocketx;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.handler.codec.MessageToMessageDecoder;
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import java.util.List;
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abstract class WebSocketProtocolHandler extends MessageToMessageDecoder<WebSocketFrame> {
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@Override
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protected void decode(ChannelHandlerContext ctx, WebSocketFrame frame, List<Object> out) throws Exception {
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if (frame instanceof PingWebSocketFrame) {
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frame.content().retain();
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ctx.channel().writeAndFlush(new PongWebSocketFrame(frame.content()));
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return;
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}
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if (frame instanceof PongWebSocketFrame) {
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// Pong frames need to get ignored
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return;
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}
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out.add(frame.retain());
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
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ctx.close();
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}
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}
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