/*
* 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.socksproxy;
import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundByteHandlerAdapter;
public final class RelayHandler extends ChannelInboundByteHandlerAdapter {
private static final String name = "RELAY_HANDLER";
public static String getName() {
return name;
}
private final Channel relayChannel;
public RelayHandler(Channel relayChannel) {
this.relayChannel = relayChannel;
}
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
ctx.flush();
}
@Override
public void inboundBufferUpdated(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
ByteBuf out = relayChannel.outboundByteBuffer();
out.writeBytes(in);
if (relayChannel.isActive()) {
relayChannel.flush();
}
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
if (relayChannel.isActive()) {
SocksServerUtils.closeOnFlush(relayChannel);
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
cause.printStackTrace();
ctx.close();
}
}