// Path: src/main/java/sockslib/common/SocksException.java
// public class SocksException extends IOException {
// 
//   /**
//    * Serial version UID.
//    */
//   private static final long serialVersionUID = 1L;
// 
//   private static final String NO_ACCEPTABLE_METHODS = "NO ACCEPTABLE METHODS";
//   /**
//    * Messages that server will reply.
//    */
//   private static final String serverReplyMessage[] =
//       {"General SOCKS server failure", "Connection not allowed by ruleset",
//           "Network " + "unreachable", "Host unreachable", "Connection refused", "TTL expired",
//           "Command not " + "supported", "Address type not supported"};
//   /**
//    * Reply from SOCKS server.
//    */
//   private ServerReply serverReply;
// 
//   /**
//    * Constructs an instance of {@link SocksException} with a message.
//    *
//    * @param msg Message.
//    */
//   public SocksException(String msg) {
//     super(msg);
//   }
// 
//   /**
//    * Constructs an instance of {@link SocksException} with a code.
//    *
//    * @param replyCode The code that server Replied.
//    */
//   public SocksException(int replyCode) {
// 
//   }
// 
//   /**
//    * Returns a {@link SocksException} instance with a message "NO ACCEPTABLE METHODS".
//    *
//    * @return An instance of {@link SocksException}.
//    */
//   public static SocksException noAcceptableMethods() {
//     return new SocksException(NO_ACCEPTABLE_METHODS);
//   }
// 
//   /**
//    * Returns a {@link SocksException} instance with a message "Protocol not supported".
//    *
//    * @return An instance of {@link SocksException}.
//    */
//   public static SocksException protocolNotSupported() {
//     return new SocksException("Protocol not supported");
//   }
// 
//   /**
//    * Returns a {@link SocksException} instance with a message of reply.
//    *
//    * @param reply Server's reply.
//    * @return An instance of {@link SocksException}.
//    */
//   public static SocksException serverReplyException(ServerReply reply) {
//     SocksException ex = serverReplyException(reply.getValue());
//     ex.setServerReply(reply);
//     return ex;
//   }
// 
//   /**
//    * Returns a {@link SocksException} instance with a message of reply.
//    *
//    * @param reply Code of server's reply.
//    * @return An instance of {@link SocksException}.
//    */
//   public static SocksException serverReplyException(byte reply) {
//     int code = reply;
//     code = code & 0xff;
//     if (code < 0 || code > 0x08) {
//       return new SocksException("Unknown reply");
//     }
//     code = code - 1;
//     return new SocksException(serverReplyMessage[code]);
//   }
// 
//   /**
//    * Returns server's reply.
//    *
//    * @return Server's reply.
//    */
//   public ServerReply getServerReply() {
//     return serverReply;
//   }
// 
//   /**
//    * Sets server's reply.
//    *
//    * @param serverReply Reply of the server.
//    */
//   public void setServerReply(ServerReply serverReply) {
//     this.serverReply = serverReply;
//   }
// 
// }


import sockslib.common.SocksException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketAddress;
/*
 * Copyright 2015-2025 the original author or authors.
 * 
 * Licensed 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 sockslib.client;



/**
 * The class <code>SocksServerSocket</code> is server socket that can bind a port at SOCKS server
 * and accept a connection. This server socket can only accept one connection from specified IP
 * address and port.<br>
 * <p>
 * You can build a TCP server in SOCKS server easily by using following codes:
 * </p>
 * <pre>
 * SocksProxy proxy = new Socks5(new InetSocketAddress("foo.com", 1080));
 * //Create SOCKS5 proxy.
 *
 * ServerSocket serverSocket = new SocksServerSocket(proxy, inetAddress, 8080);
 * // Get bind address in SOCKS server.
 * InetAddress bindAddress = ((SocksServerSocket) serverSocket).getBindAddress();
 * // Get bind port in SOKCS server.
 * int bindPort = ((SocksServerSocket) serverSocket).getBindPort();
 * Socket socket = serverSocket.accept();
 * </pre>
 *
 * @author Youchao Feng
 * @version 1.0
 * @date Mar 25, 2015 11:40:36 AM
 */
public class SocksServerSocket extends ServerSocket {

  /**
   * Logger.
   */
  protected static final Logger logger = LoggerFactory.getLogger(SocksServerSocket.class);

  /**
   * SOCKS proxy.
   */
  private SocksProxy proxy;

  /**
   * The remote host's IP address that will connect the server.
   */
  private InetAddress incomeAddress;


  /**
   * The remote host's port that will connect the server.
   */
  private int incomePort;


  /**
   * Server's IP address.
   */
  private InetAddress bindAddress;

  /**
   * Server's port.
   */
  private int bindPort;

  /**
   * If {@link #accept()} is called, it will be <code>true</code>.
   */
  private boolean alreadyAccepted = false;


  /**
   * Constructs a server socket. This server socket will established in SOCKS server.
   *
   * @param proxy       SOCKS proxy.
   * @param inetAddress The IP address that server socket will accept.
   * @param port        The port that server socket will accept.
   * @throws SocksException If any error about SOCKS protocol occurs.
   * @throws IOException    If any I/O error occurs.
   */
  public SocksServerSocket(SocksProxy proxy, InetAddress inetAddress, int port) throws
// Path: src/main/java/sockslib/common/SocksException.java
// public class SocksException extends IOException {
// 
//   /**
//    * Serial version UID.
//    */
//   private static final long serialVersionUID = 1L;
// 
//   private static final String NO_ACCEPTABLE_METHODS = "NO ACCEPTABLE METHODS";
//   /**
//    * Messages that server will reply.
//    */
//   private static final String serverReplyMessage[] =
//       {"General SOCKS server failure", "Connection not allowed by ruleset",
//           "Network " + "unreachable", "Host unreachable", "Connection refused", "TTL expired",
//           "Command not " + "supported", "Address type not supported"};
//   /**
//    * Reply from SOCKS server.
//    */
//   private ServerReply serverReply;
// 
//   /**
//    * Constructs an instance of {@link SocksException} with a message.
//    *
//    * @param msg Message.
//    */
//   public SocksException(String msg) {
//     super(msg);
//   }
// 
//   /**
//    * Constructs an instance of {@link SocksException} with a code.
//    *
//    * @param replyCode The code that server Replied.
//    */
//   public SocksException(int replyCode) {
// 
//   }
// 
//   /**
//    * Returns a {@link SocksException} instance with a message "NO ACCEPTABLE METHODS".
//    *
//    * @return An instance of {@link SocksException}.
//    */
//   public static SocksException noAcceptableMethods() {
//     return new SocksException(NO_ACCEPTABLE_METHODS);
//   }
// 
//   /**
//    * Returns a {@link SocksException} instance with a message "Protocol not supported".
//    *
//    * @return An instance of {@link SocksException}.
//    */
//   public static SocksException protocolNotSupported() {
//     return new SocksException("Protocol not supported");
//   }
// 
//   /**
//    * Returns a {@link SocksException} instance with a message of reply.
//    *
//    * @param reply Server's reply.
//    * @return An instance of {@link SocksException}.
//    */
//   public static SocksException serverReplyException(ServerReply reply) {
//     SocksException ex = serverReplyException(reply.getValue());
//     ex.setServerReply(reply);
//     return ex;
//   }
// 
//   /**
//    * Returns a {@link SocksException} instance with a message of reply.
//    *
//    * @param reply Code of server's reply.
//    * @return An instance of {@link SocksException}.
//    */
//   public static SocksException serverReplyException(byte reply) {
//     int code = reply;
//     code = code & 0xff;
//     if (code < 0 || code > 0x08) {
//       return new SocksException("Unknown reply");
//     }
//     code = code - 1;
//     return new SocksException(serverReplyMessage[code]);
//   }
// 
//   /**
//    * Returns server's reply.
//    *
//    * @return Server's reply.
//    */
//   public ServerReply getServerReply() {
//     return serverReply;
//   }
// 
//   /**
//    * Sets server's reply.
//    *
//    * @param serverReply Reply of the server.
//    */
//   public void setServerReply(ServerReply serverReply) {
//     this.serverReply = serverReply;
//   }
// 
// }


// Path: src/main/java/sockslib/client/SocksServerSocket.java
import sockslib.common.SocksException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketAddress;

/*
 * Copyright 2015-2025 the original author or authors.
 * 
 * Licensed 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 sockslib.client;



/**
 * The class <code>SocksServerSocket</code> is server socket that can bind a port at SOCKS server
 * and accept a connection. This server socket can only accept one connection from specified IP
 * address and port.<br>
 * <p>
 * You can build a TCP server in SOCKS server easily by using following codes:
 * </p>
 * <pre>
 * SocksProxy proxy = new Socks5(new InetSocketAddress("foo.com", 1080));
 * //Create SOCKS5 proxy.
 *
 * ServerSocket serverSocket = new SocksServerSocket(proxy, inetAddress, 8080);
 * // Get bind address in SOCKS server.
 * InetAddress bindAddress = ((SocksServerSocket) serverSocket).getBindAddress();
 * // Get bind port in SOKCS server.
 * int bindPort = ((SocksServerSocket) serverSocket).getBindPort();
 * Socket socket = serverSocket.accept();
 * </pre>
 *
 * @author Youchao Feng
 * @version 1.0
 * @date Mar 25, 2015 11:40:36 AM
 */
public class SocksServerSocket extends ServerSocket {

  /**
   * Logger.
   */
  protected static final Logger logger = LoggerFactory.getLogger(SocksServerSocket.class);

  /**
   * SOCKS proxy.
   */
  private SocksProxy proxy;

  /**
   * The remote host's IP address that will connect the server.
   */
  private InetAddress incomeAddress;


  /**
   * The remote host's port that will connect the server.
   */
  private int incomePort;


  /**
   * Server's IP address.
   */
  private InetAddress bindAddress;

  /**
   * Server's port.
   */
  private int bindPort;

  /**
   * If {@link #accept()} is called, it will be <code>true</code>.
   */
  private boolean alreadyAccepted = false;


  /**
   * Constructs a server socket. This server socket will established in SOCKS server.
   *
   * @param proxy       SOCKS proxy.
   * @param inetAddress The IP address that server socket will accept.
   * @param port        The port that server socket will accept.
   * @throws SocksException If any error about SOCKS protocol occurs.
   * @throws IOException    If any I/O error occurs.
   */
  public SocksServerSocket(SocksProxy proxy, InetAddress inetAddress, int port) throws
      SocksException, IOException {