How to use

SocksMethod

in

sockslib.common.methods

/**
 * Constructs an instance of {@link MethodSelectionResponseMessage} with a version and a method.
 *
 * @param version     Version.
 * @param socksMethod Selected method.
 */
public MethodSelectionResponseMessage(int version, SocksMethod socksMethod) {
  this(version, socksMethod.getByte());
}

/**
 * Puts a {@link SocksMethod} class into the SOCKS method registry with an instance of
 * {@link SocksMethod}.
 *
 * @param socksMethod The instance of {@link SocksMethod}.
 */
public static void putMethod(SocksMethod socksMethod) {
  checkNotNull(socksMethod, "Argument [socksMethod] may not be null");
  logger.debug("Register {}[{}]", socksMethod.getMethodName(), socksMethod.getByte());
  methods.put((byte) socksMethod.getByte(), socksMethod);
}

logger.debug("SESSION[{}] Response client:{}", session.getId(), selectedMethod.getMethodName());
selectedMethod.doMethod(session);

@Override
public void buildConnection() throws SocksException, IOException {
  if (inetAddress == null) {
    throw new IllegalArgumentException("Please set inetAddress before calling buildConnection.");
  }
  if (proxySocket == null) {
    proxySocket = createProxySocket(inetAddress, port);
  } else if (!proxySocket.isConnected()) {
    proxySocket.connect(new InetSocketAddress(inetAddress, port));
  }
  SocksMethod method =
      socksMethodRequester.doRequest(acceptableMethods, proxySocket, SOCKS_VERSION);
  method.doMethod(this);
}

logger.debug("SESSION[{}] Response client:{}", session.getId(), selectedMethod.getMethodName());
selectedMethod.doMethod(session);

@Override
public void buildConnection() throws SocksException, IOException {
 if (inetAddress == null) {
  throw new IllegalArgumentException("Please set inetAddress before calling buildConnection.");
 }
 if (proxySocket == null) {
  proxySocket = createProxySocket(inetAddress, port);
 } else if (!proxySocket.isConnected()) {
  proxySocket.connect(new InetSocketAddress(inetAddress, port));
 }
 SocksMethod method =
   socksMethodRequester.doRequest(acceptableMethods, proxySocket, SOCKS_VERSION);
 method.doMethod(this);
}

/**
 * Constructs an instance of {@link MethodSelectionResponseMessage} with a version and a method.
 *
 * @param version     Version.
 * @param socksMethod Selected method.
 */
public MethodSelectionResponseMessage(int version, SocksMethod socksMethod) {
 this(version, socksMethod.getByte());
}

/**
 * Puts a {@link SocksMethod} class into the SOCKS method registry with an instance of
 * {@link SocksMethod}.
 *
 * @param socksMethod The instance of {@link SocksMethod}.
 */
public static void putMethod(SocksMethod socksMethod) {
 checkNotNull(socksMethod, "Argument [socksMethod] may not be null");
 logger.debug("Register {}[{}]", socksMethod.getMethodName(), socksMethod.getByte());
 methods.put((byte) socksMethod.getByte(), socksMethod);
}

/**
 * Constructs an instance of {@link MethodSelectionResponseMessage} with a method.
 *
 * @param socksMethod Selected method.
 */
public MethodSelectionResponseMessage(SocksMethod socksMethod) {
  this(5, socksMethod.getByte());
}

/**
 * Constructs an instance of {@link MethodSelectionResponseMessage} with a method.
 *
 * @param socksMethod Selected method.
 */
public MethodSelectionResponseMessage(SocksMethod socksMethod) {
 this(5, socksMethod.getByte());
}

@Override
public boolean equals(Object obj) {
  return obj instanceof SocksMethod && ((SocksMethod) obj).getByte() == this.getByte();
}

@Override
public boolean equals(Object obj) {
 return obj instanceof SocksMethod && ((SocksMethod) obj).getByte() == this.getByte();
}

@Override
public SocksMethod select(MethodSelectionMessage message) {
  int[] methods = message.getMethods();
  for (int i = 0; i < methods.length; i++) {
    for (SocksMethod method : supportMethods) {
      if (method.getByte() == methods[i]) {
        return method;
      }
    }
  }
  return new NoAcceptableMethod();
}

@Override
public SocksMethod select(MethodSelectionMessage message) {
 int[] methods = message.getMethods();
 for (int i = 0; i < methods.length; i++) {
  for (SocksMethod method : supportMethods) {
   if (method.getByte() == methods[i]) {
    return method;
   }
  }
 }
 return new NoAcceptableMethod();
}

@Override
public SocksMethod doRequest(List<SocksMethod> acceptableMethods, Socket socket, int
    socksVersion) throws SocksException, IOException {
  InputStream inputStream = socket.getInputStream();
  OutputStream outputStream = socket.getOutputStream();
  byte[] bufferSent = new byte[2 + acceptableMethods.size()];
  bufferSent[0] = (byte) socksVersion;
  bufferSent[1] = (byte) acceptableMethods.size();
  for (int i = 0; i < acceptableMethods.size(); i++) {
    bufferSent[2 + i] = (byte) acceptableMethods.get(i).getByte();
  }
  outputStream.write(bufferSent);
  outputStream.flush();
  logger.debug("{}", LogMessageBuilder.build(bufferSent, MsgType.SEND));
  // Received data.
  byte[] receivedData = StreamUtil.read(inputStream, 2);
  logger.debug("{}", LogMessageBuilder.build(receivedData, MsgType.RECEIVE));
  if (receivedData[0] != socksVersion) {
    throw new SocksException("Remote server don't support SOCKS5");
  }
  return SocksMethodRegistry.getByByte(receivedData[1]);
}

@Override
public SocksMethod doRequest(List<SocksMethod> acceptableMethods, Socket socket, int
  socksVersion) throws SocksException, IOException {
 InputStream inputStream = socket.getInputStream();
 OutputStream outputStream = socket.getOutputStream();
 byte[] bufferSent = new byte[2 + acceptableMethods.size()];
 bufferSent[0] = (byte) socksVersion;
 bufferSent[1] = (byte) acceptableMethods.size();
 for (int i = 0; i < acceptableMethods.size(); i++) {
  bufferSent[2 + i] = (byte) acceptableMethods.get(i).getByte();
 }
 outputStream.write(bufferSent);
 outputStream.flush();
 logger.debug("{}", LogMessageBuilder.build(bufferSent, MsgType.SEND));
 // Received data.
 byte[] receivedData = StreamUtil.read(inputStream, 2);
 logger.debug("{}", LogMessageBuilder.build(receivedData, MsgType.RECEIVE));
 if (receivedData[0] != socksVersion) {
  throw new SocksException("Remote server don't support SOCKS5");
 }
 return SocksMethodRegistry.getByByte(receivedData[1]);
}