为什么超时值是不尊重搭载Android HttpURLConnection的? [英] Why timeout value is not respected by android HttpURLConnection?
问题描述
我有以下的code座:
I have the following code block:
try {
URL url = new URL("http://site-to-test.com/nonexistingpage.html");
HttpURLConnection urlc = (HttpURLConnection) url.openConnection();
urlc.setRequestProperty("User-Agent", CoreProtocolPNames.USER_AGENT);
urlc.setRequestProperty("Connection", "close");
urlc.setConnectTimeout(500); // timeout is in milliseconds
urlc.connect();
if (urlc.getResponseCode() == 404) {
// Server was reachable
Log.i(TAG, "Server is reachable");
}
} catch (MalformedURLException mue) {
Log.e(TAG, "MalformedURLException: " + mue.getMessage());
} catch (IOException e) {
Log.e(TAG, "IOException: " + e.getMessage());
}
在站点到测试
域名无法访问,通过目前的网络,接收<$ C之前约30-40秒这code块$ C> IOException异常。我专门超时值设置为500毫秒。我在想什么吗?如果不是以上块半秒终止的网络状态和站点的可用性,不管?
When the site-to-test
domain is not reachable through the current network, this code blocks for about 30-40 seconds before receiving the IOException
. And I specifically set the timeout value to 500ms. What am I missing here? Shouldn't the above block terminate in half a second, regardless of the network state and the site's availability?
推荐答案
看来的的Java URLConnection的没有提供自动防故障超时读取
解决的办法是,作为文章的介绍,使用一个单独的线程用于计时,并手动断开HttpURLConnection的一次计时器线程完成。
The solution is, as the article explains, to use a separate Thread for timing, and disconnect the HttpURLConnection manually once the timer thread is done.
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