io.netty.handler.codec.http.websocketx.WebSocket00FrameEncoder Maven / Gradle / Ivy
/*
* 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:
*
* https://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.handler.codec.http.websocketx;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToMessageEncoder;
import java.util.List;
/**
* Encodes a {@link WebSocketFrame} into a {@link ByteBuf}.
*
* For the detailed instruction on adding add Web Socket support to your HTTP server, take a look into the
* WebSocketServer example located in the {@code io.netty.example.http.websocket} package.
*/
@Sharable
public class WebSocket00FrameEncoder extends MessageToMessageEncoder implements WebSocketFrameEncoder {
private static final ByteBuf _0X00 = Unpooled.unreleasableBuffer(
Unpooled.directBuffer(1, 1).writeByte(0x00)).asReadOnly();
private static final ByteBuf _0XFF = Unpooled.unreleasableBuffer(
Unpooled.directBuffer(1, 1).writeByte((byte) 0xFF)).asReadOnly();
private static final ByteBuf _0XFF_0X00 = Unpooled.unreleasableBuffer(
Unpooled.directBuffer(2, 2).writeByte((byte) 0xFF).writeByte(0x00)).asReadOnly();
@Override
protected void encode(ChannelHandlerContext ctx, WebSocketFrame msg, List