io.netty.handler.codec.socksx.SocksPortUnificationServerHandler Maven / Gradle / Ivy
/*
* Copyright 2015 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.socksx;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.socksx.v4.Socks4ServerDecoder;
import io.netty.handler.codec.socksx.v4.Socks4ServerEncoder;
import io.netty.handler.codec.socksx.v5.Socks5AddressEncoder;
import io.netty.handler.codec.socksx.v5.Socks5InitialRequestDecoder;
import io.netty.handler.codec.socksx.v5.Socks5ServerEncoder;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
import java.util.List;
/**
* Detects the version of the current SOCKS connection and initializes the pipeline with
* {@link Socks4ServerDecoder} or {@link Socks5InitialRequestDecoder}.
*/
public class SocksPortUnificationServerHandler extends ByteToMessageDecoder {
private static final InternalLogger logger =
InternalLoggerFactory.getInstance(SocksPortUnificationServerHandler.class);
private final Socks5ServerEncoder socks5encoder;
/**
* Creates a new instance with the default configuration.
*/
public SocksPortUnificationServerHandler() {
this(Socks5ServerEncoder.DEFAULT);
}
/**
* Creates a new instance with the specified {@link Socks5ServerEncoder}.
* This constructor is useful when a user wants to use an alternative {@link Socks5AddressEncoder}.
*/
public SocksPortUnificationServerHandler(Socks5ServerEncoder socks5encoder) {
this.socks5encoder = ObjectUtil.checkNotNull(socks5encoder, "socks5encoder");
}
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List