Question

为什么我的SOCKS代理代码会抛出SocketException: Malformed reply from SOCKS server？我试图在URLConnection或其他设置，但这不起作用。唯一有用的东西 - chilkat lib，但它是商业的。那么，我如何通过ASOCKS代理发出http请求呢？也许存在一些免费的lib？

例如，该代码：

    SocketAddress addr = new InetSocketAddress(proxy_ip, proxy_port);
    Proxy proxy = new Proxy(Proxy.Type.SOCKS, addr);
    Socket socket = new Socket(proxy);
    InetSocketAddress dest = new InetSocketAddress("google.com", 80);
    try {
        socket.connect(dest);
    } catch (IOException ex) {
        Logger.getLogger(CheckProxy.class.getName()).log(Level.SEVERE, null, ex);
    }

抛出异常：

java.net.SocketException: Malformed reply from SOCKS server
at java.net.SocksSocketImpl.readSocksReply(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at proxychecker.CheckProxy.SocksCheck(CheckProxy.java:86)

第86行是“socket.connect（dest）;”

Answer 1

SocketException: Malformed reply from SOCKS server

这表明您根本没有SOCKS代理。可能是HTTP代理。

请注意，您提出了错误的问题。你的代码是正确的，这是你的错误。

Answer 2

此错误的解释：bugs.java.com/view_bug.do?bug_id=6964547

您需要使用以下代码手动更改Socket对象中的模式：

Class clazzSocks  = socket.getClass();
Method setSockVersion  = null;
Field sockImplField = null; 
SocketImpl socksimpl = null; 
try {
  sockImplField = clazzSocks.getDeclaredField("impl");
  sockImplField.setAccessible(true);
  socksimpl  = (SocketImpl) sockImplField.get(socket);
  Class clazzSocksImpl  =  socksimpl.getClass();
  setSockVersion  = clazzSocksImpl.getDeclaredMethod("setV4");
  setSockVersion.setAccessible(true);
  if(null != setSockVersion){
      setSockVersion.invoke(socksimpl);
  }
  sockImplField.set(socket, socksimpl);
} catch (Exception e) {

}

为什么我的SOCKS代理代码抛出SocketException：来自SOCKS服务器的格式错误的回复？

2 个答案: