Question

我正在使用Apache HttpComponents 4.2.1而我无法让HttpGet.abort（）和HttpPost.abort（）立即中止。它大部分时间都可以工作，但偶尔连接会阻塞，直到超时。我注意到这只发生在我明确设置超时值时。

这是我的测试代码：

public static void main(String[] args) throws Exception {
    for (int i = 0; i < 10; i++) {
        testAbort();
    }
}

public static void testAbort() throws Exception {
    String urlString = "http://slow.website.com";

    final HttpGet httpGet = new HttpGet(urlString);

    Runnable runnable = new Runnable() {
        public void run() {
            try {
                HttpClient httpClient = new DefaultHttpClient();

                HttpParams httpParams = httpClient.getParams();

                HttpConnectionParams.setConnectionTimeout(httpParams, 10000); // issue doesn't occur if I comment this line

                httpClient.execute(httpGet);
            } 
            catch (Exception e) {
                System.out.println(e.getMessage());
            }
        }
    };

    Thread t = new Thread(runnable);

    t.start();

    Thread.sleep(100);

    httpGet.abort();
}

以下是我得到的输出样本：

Request already aborted
Request already aborted
Request already aborted
Socket closed
Request already aborted
Connection has been shut down
Socket closed
Socket closed
Connect to slow.website.com:80 timed out
Connect to www.website.com:80 timed out

您可能需要增加迭代次数或使用Thread.sleep（）值来查看问题。

根据HttpComponent文档，“当一个HTTP请求被中止时，它的执行线程在I / O操作中被阻止，保证通过抛出InterruptedIOException来解除阻塞”（link）

我正在运行Mac OS X 10.8（Java版本1.6.0_29）。

任何想法可能是什么问题？

HttpGet.abort（）/ HttpPost.abort（）并不总是立即中止

0 个答案: