HttpURLConnection问题

小弟遇到一个难题,请高人们指点一下.
我在客户端创建了一个HttpURLConnection连接,发送xml请求,接收的也是xml,并且用SAX来解析,正常情况下都可以成功, 但是有一个情况,服务端接收到请求后不往socket里写东西,而客户端就停住了, 自己做了一个超时的处理线程去关闭HttpURLConnection连接,但是感觉socket还是没有关闭,客户端依然在等待,也没有socket异常. 有没有什么好办法,能使连接超时后能给一个异常. 以下是代码:

////接收数据
    private void receiveResponse( HttpURLConnection connection )
        throws Exception {
        MonitorXMLHandler handler = null;
        InputStream bis = null;

        handler = handlerFactory.get( monitorName, this );

        try {
            status = connection.getResponseCode();
            errorMessage = connection.getResponseMessage();
            if ( logger.isLoggable( Level.FINER ) ) {
                logger.finer( "receive message : status=[" + status + "], messege=["
                              + errorMessage + "]" );
            }
           
            bis = new BufferedInputStream( connection.getInputStream() );
            connManager.startTimeoutCheck( connection, bis );
            // 到这个函数里面就停住不走了,也没有异常,似乎在等待服务端写数据
            if ( !handler.getResult( bis ) ) {
                throw new Exception( "It is not demand treatable." );
            }
            if ( logger.isLoggable( Level.FINER ) ) {
                logger.finer( "All messages were received." );
            }
        } finally {
            try {
                if ( bis != null ) {
                    bis.close();
                    bis = null;
                }
            } catch ( IOException e ) {
                if ( bis != null ) {
                    try {
                        bis.close();
                        bis = null;
                    } catch ( IOException ioe ) {
                        if ( logger.isLoggable( Level.FINEST ) ) {
                            logger.finest( "The input stream cannot close." );
                        }
                    }
                }
            }
        }
    }


import org.xml.sax.helpers.DefaultHandler;

public class MonitorXMLHandler extends DefaultHandler {

   private SAXParser parser = null;
...

// 解析xml
    public boolean getResult( InputStream is )
        throws Exception {

        if ( message == null || is == null ) {
            return false;
        }

        if ( logger.isLoggable( Level.FINEST ) ) {
            logger.finest( "The analysis of the message begins." );
        }
        //到此处就不往下走了.
        parser.parse( is, this );

        if ( logger.isLoggable( Level.FINEST ) ) {
            logger.finest( "The analysis of the message finished." );
        }

        return true;
    }
....

}


public void startTimeoutCheck() {
   //判断超时
    if (超时) {
      bis.close();
      bis = null;
      connection.disconnect();
      connection = null;
    }
}

另外我用的JDK1.4,没有使用jdk1.5里的HttpURLConnection 的设置超时的新函数.