Java tutorial
/* * 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. */ import io.netty.channel.ChannelInitializer; import io.netty.channel.ChannelPipeline; import io.netty.channel.socket.SocketChannel; import io.netty.handler.codec.DelimiterBasedFrameDecoder; import io.netty.handler.codec.Delimiters; import io.netty.handler.codec.string.StringDecoder; import io.netty.handler.codec.string.StringEncoder; import io.netty.handler.ssl.SslContext; /** * Creates a newly configured {@link ChannelPipeline} for a new channel. */ public class TelnetClientInitializer extends ChannelInitializer<SocketChannel> { private static final StringDecoder DECODER = new StringDecoder(); private static final StringEncoder ENCODER = new StringEncoder(); private static final TelnetClientHandler CLIENT_HANDLER = new TelnetClientHandler(); private final SslContext sslCtx; public TelnetClientInitializer(SslContext sslCtx) { this.sslCtx = sslCtx; } @Override public void initChannel(SocketChannel ch) { ChannelPipeline pipeline = ch.pipeline(); if (sslCtx != null) { pipeline.addLast(sslCtx.newHandler(ch.alloc(), TelnetClient.HOST, TelnetClient.PORT)); } // Add the text line codec combination first, pipeline.addLast(new DelimiterBasedFrameDecoder(8192, Delimiters.lineDelimiter())); pipeline.addLast(DECODER); pipeline.addLast(ENCODER); // and then business logic. pipeline.addLast(CLIENT_HANDLER); } }