44 lines
1.7 KiB
Java
44 lines
1.7 KiB
Java
/*
|
|
* Copyright 2012 The Netty Project
|
|
*
|
|
* The Netty Project licenses this file to you under the Apache License,
|
|
* version 2.0 (the "License"); you may not use this file except in compliance
|
|
* with the License. You may obtain a copy of the License at:
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*/
|
|
package io.netty.example.http.websocketx.server;
|
|
|
|
import java.util.Locale;
|
|
|
|
import io.netty.channel.ChannelHandlerContext;
|
|
import io.netty.channel.SimpleChannelInboundHandler;
|
|
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
|
|
import io.netty.handler.codec.http.websocketx.WebSocketFrame;
|
|
|
|
/**
|
|
* Echoes uppercase content of text frames.
|
|
*/
|
|
public class WebSocketFrameHandler extends SimpleChannelInboundHandler<WebSocketFrame> {
|
|
|
|
@Override
|
|
protected void messageReceived(ChannelHandlerContext ctx, WebSocketFrame frame) throws Exception {
|
|
// ping and pong frames already handled
|
|
|
|
if (frame instanceof TextWebSocketFrame) {
|
|
// Send the uppercase string back.
|
|
String request = ((TextWebSocketFrame) frame).text();
|
|
ctx.channel().writeAndFlush(new TextWebSocketFrame(request.toUpperCase(Locale.US)));
|
|
} else {
|
|
String message = "unsupported frame type: " + frame.getClass().getName();
|
|
throw new UnsupportedOperationException(message);
|
|
}
|
|
}
|
|
}
|