Tao

Tao obeys its own inherent Nature

2009年7月15日

搬到了: http://theantway.com
posted @ 2011-11-08 13:43 wade 阅读(138) | 评论 (0)编辑 收藏
Ubuntu 11.04
libxml2-2.7.8

网上找了一些办法都不能用,最后直接打开configure 文件,找到$RM "$cfgfile", 替换为 $RM -f "$cfgfile", 说白了就是出错了也不要停,继续执行。再运行configure, 成功
posted @ 2011-06-02 10:15 wade 阅读(1194) | 评论 (0)编辑 收藏

When I try to use URLConnection to check if a url is accessible using the following code:

try {
    URL url = new URL("http://169.254.169.254/latest");

    URLConnection connection = url.openConnection();
    connection.setConnectTimeout(5000);
    connection.connect();
    System.out.println("Connected successfully using url");
} catch (IOException e) {
        e.printStackTrace();
}

I expected the behavior is: connect should be success if the host is reachable, else throw exception. It works fine without the anti-virus application, but always print “connected successfully” even the host is not reachable.

Then I tried to use Socket to connect:

Socket socket = new Socket();
socket.connect(new InetSocketAddress("169.254.169.254", 80));
if (socket.isConnected()) {
    System.out.println("Connected successfully using socket");
} else {
    System.out.println("Connected failed using socket");
}

But Still got the same problem.

The solution for it:

Disable http check in anti-virus, for example, in ESET NOD32, the settings is Web access protection -> Http, Https -> Http scanner

ESET_http_connection_always_success

posted @ 2009-07-15 13:30 wade 阅读(348) | 评论 (0)编辑 收藏

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