/* * 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.handler.codec.socksx.v4; import io.netty.handler.codec.DecoderResult; import io.netty.util.NetUtil; 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 (status == null) { throw new NullPointerException("cmdStatus"); } 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 = status; 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(); } }