io.netty.handler.codec.socksx.v4.DefaultSocks4CommandResponse 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.socksx.v4;
import io.netty.handler.codec.DecoderResult;
import io.netty.util.NetUtil;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.StringUtil;
/**
* The default {@link Socks4CommandResponse}.
*/
public class DefaultSocks4CommandResponse extends AbstractSocks4Message implements Socks4CommandResponse {
private final Socks4CommandStatus status;
private final String dstAddr;
private final int dstPort;
/**
* Creates a new instance.
*
* @param status the status of the response
*/
public DefaultSocks4CommandResponse(Socks4CommandStatus status) {
this(status, null, 0);
}
/**
* Creates a new instance.
*
* @param status the status of the response
* @param dstAddr the {@code DSTIP} field of the response
* @param dstPort the {@code DSTPORT} field of the response
*/
public DefaultSocks4CommandResponse(Socks4CommandStatus status, String dstAddr, int dstPort) {
if (dstAddr != null) {
if (!NetUtil.isValidIpV4Address(dstAddr)) {
throw new IllegalArgumentException(
"dstAddr: " + dstAddr + " (expected: a valid IPv4 address)");
}
}
if (dstPort < 0 || dstPort > 65535) {
throw new IllegalArgumentException("dstPort: " + dstPort + " (expected: 0~65535)");
}
this.status = ObjectUtil.checkNotNull(status, "cmdStatus");
this.dstAddr = dstAddr;
this.dstPort = dstPort;
}
@Override
public Socks4CommandStatus status() {
return status;
}
@Override
public String dstAddr() {
return dstAddr;
}
@Override
public int dstPort() {
return dstPort;
}
@Override
public String toString() {
StringBuilder buf = new StringBuilder(96);
buf.append(StringUtil.simpleClassName(this));
DecoderResult decoderResult = decoderResult();
if (!decoderResult.isSuccess()) {
buf.append("(decoderResult: ");
buf.append(decoderResult);
buf.append(", dstAddr: ");
} else {
buf.append("(dstAddr: ");
}
buf.append(dstAddr());
buf.append(", dstPort: ");
buf.append(dstPort());
buf.append(')');
return buf.toString();
}
}