Java 通过带有ProxyConnector的SOCKS5代理从服务器获取响应时发生NullPointerException
我在基于ApacheMina实现安全xmpp客户端时遇到问题。它应该支持一些功能，如HMAC等。。我任务中的一点是提供使用SOCKS5代理的能力。服务器端已经完成了，我有了不支持代理的工作代码。以下是我实现的构造函数：Java 通过带有ProxyConnector的SOCKS5代理从服务器获取响应时发生NullPointerException,java,proxy,apache-mina,Java,Proxy,Apache Mina,我在基于ApacheMina实现安全xmpp客户端时遇到问题。它应该支持一些功能，如HMAC等。。我任务中的一点是提供使用SOCKS5代理的能力。服务器端已经完成了，我有了不支持代理的工作代码。以下是我实现的构造函数： public class SecureConnector extends AbstractProxyIoHandler { private static final int PORT = PORT; private static final String HOSTNAME = H
public class SecureConnector extends AbstractProxyIoHandler {
private static final int PORT = PORT;
private static final String HOSTNAME = HOSTNAME;
private NioSocketConnector nioConnector;
private ProxyConnector connector;
private volatile int lastStreamID = 0;
private static Object mutex = new Object();
private List<MessageFilter> filters = new ArrayList<MessageFilter>();
private NotificationListener notificationListener;
public SecureConnector(NotificationListener notificationListener, InetSocketAddress proxyAddress) {
this.notificationListener = notificationListener;
nioConnector = new NioSocketConnector();
SocksProxyRequest pr = new SocksProxyRequest(
SocksProxyConstants.SOCKS_VERSION_5,
SocksProxyConstants.ESTABLISH_TCPIP_STREAM,
new InetSocketAddress(HOSTNAME, PORT), "");
ProxyIoSession ps=new ProxyIoSession(proxyAddress, pr);
connector=new ProxyConnector(nioConnector);
connector.setHandler(this);
connector.getFilterChain().addLast("codec", new
connector.getFilterChain().addFirst("sslfilter", getSSLFilter());
connector.setProxyIoSession(ps);}
@Override
public void proxySessionOpened(IoSession session)
{
WriteFuture writeFuture = session.write(IoBuffer.wrap(new byte[]{0xFF}));
}
public ConnectFuture connect() {
return connector.connect();
}
@Override
public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
cause.printStackTrace();
session.close(true);
}
@Override
public void messageReceived(IoSession session, Object message) throws Exception {
if (message instanceof Message) {
Message msg = (Message) message;
if (msg instanceof Close){
session.close(true);
return;
}
}
SecureConnector connector = new SecureConnector(new NotificationListener(service),proxyAddress);
System.out.println("connector created");
ConnectFuture connectFuture = connector.connect();
connectFuture.await(TIMEOUT);
if (!connectFuture.isConnected()) {
throw new IOException("Couldn't connect to server!");
}
System.out.println("before getting session");
final IoSession session = connectFuture.getSession();
IoSessionConfig sessconf = session.getConfig();
sessconf.setUseReadOperation(true);
System.out.println("session configured");
send(session, IoBuffer.wrap(new byte[]{0xFF}));
System.out.println("byte sent");
recieve(session);
System.out.println("Connected to server.");