如何在Android

Question

所以我一直试图通过我的Android应用程序使用HttpURLconnection连接到IP Camera（型号：Foscam fI9821w v2）。

正如在Foscam论坛上所说，我需要使用的URL的格式如下：＆＃34; http://ipaddress:port/cgibin/CGIProxy.fcgicmd=snapPicture2&usr=admin&pwd=xxx＆＃34;。

以下是我的代码尝试连接到相机并检索流的方法：

public InputStream httpRequest(String link, String usr, String pwd) {
    InputStream is = null;

    URL url = null;
    try {
        url = new URL(link);
        System.out.println("Attempting to connect to: " + url.toString());

        // basic auth
        String userpass = usr + ":" + pwd;
        int flags = Base64.URL_SAFE | Base64.NO_WRAP;
        byte[] authEncBytes = userpass.getBytes();
        String authStringEnc = Base64.encodeToString(authEncBytes, flags);

        String basicAuth = "Basic " + Base64.encode(userpass.getBytes(), flags);

        System.out.println("*** basicAuth: " + basicAuth);
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setReadTimeout(5000);
        urlConnection.setConnectTimeout(5000);
        //urlConnection.setRequestMethod("GET");
        urlConnection.setRequestProperty("User-Agent", "Mozilla/5.0 (Linux; Android 5.0; SM-G900F Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.105 Mobile Safari/537.36");
        urlConnection.setRequestProperty("Authorization", "Basic" + basicAuth);

        //urlConnection.setDoInput(true);
        urlConnection.connect();
        int responseCode = urlConnection.getResponseCode();
        if (responseCode == 200) {
            is = urlConnection.getInputStream();
        }
        System.out.println("WHAT DOES THIS SAY: " + urlConnection.toString());
        System.out.println("RESPONSE: " + responseCode);

        int rc = urlConnection.getResponseCode();
        urlConnection.disconnect();
        if ((rc == 401) || (rc == 403) || (rc == 404) || (rc >= 500)){
            Log.i(TAG, String.valueOf(rc));
        } else {
            Log.i(TAG, "SUCCESS!");
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    return null;

}

我使用上面的网址格式，但我假设我可以删除＆＃34;＆amp; usr = admin＆amp; pwd = xxx＆＃34;从URL的末尾，因为我使用setRequestProperty进行身份验证？ （如果我错了，请纠正我）。我已经在另一个应用程序（iSpy）中尝试过该URL，但它确实有效，但它有＆＃34;＆amp; usr = admin＆amp; pwd = xxx＆＃34;在它的最后。 无论如何，我总是得到以下错误：

java.net.SocketTimeoutException: failed to connect to /192.168.0.15 (port 80) after 5000ms

其次是：

java.io.IOException: BufferedInputStream is closed

我已经在互联网上搜索了一段时间，试图弄清楚我做错了什么，并且我多次修改了我的代码。任何人都可以帮我确定我做错了吗？