Example usage for java.net HttpURLConnection disconnect

Introduction

In this page you can find the example usage for java.net HttpURLConnection disconnect.

Prototype

public abstract void disconnect();

Source Link

Document

Indicates that other requests to the server are unlikely in the near future.

Usage

From source file:Main.java

/**
 * Return '' or error message if error occurs during URL connection.
 * /* w w w  .  ja v  a 2  s  .co m*/
 * @param url   The URL to ckeck
 * @return
 */
public static String getUrlStatus(String url) {
    URL u;
    URLConnection conn;
    int connectionTimeout = 500;
    try {
        u = new URL(url);
        conn = u.openConnection();
        conn.setConnectTimeout(connectionTimeout);

        // TODO : set proxy

        if (conn instanceof HttpURLConnection) {
            HttpURLConnection httpConnection = (HttpURLConnection) conn;
            httpConnection.setInstanceFollowRedirects(true);
            httpConnection.connect();
            httpConnection.disconnect();
            // FIXME : some URL return HTTP200 with an empty reply from server 
            // which trigger SocketException unexpected end of file from server
            int code = httpConnection.getResponseCode();

            if (code == HttpURLConnection.HTTP_OK) {
                return "";
            } else {
                return "Status: " + code;
            }
        } // TODO : Other type of URLConnection
    } catch (Exception e) {
        e.printStackTrace();
        return e.toString();
    }

    return "";
}

---

From source file:Main.java

/**
 * Makes a GET call to the server.//from  w  w  w.  j  a v  a  2  s . c o  m
 * @return The serve response (expected is JSON)
 */
public static String httpGet(String urlStr) {
    try {
        URL url = new URL(urlStr);

        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        InputStream in = new BufferedInputStream(urlConnection.getInputStream());
        String r = readStream(in);
        urlConnection.disconnect();
        return r;
    } catch (MalformedURLException e) {
        Log.v("MyLog", "GET: Bad URL");
        e.printStackTrace();
        return "GET: Bad URL";
    } catch (IOException e) {
        Log.v("MyLog", "GET: Bad Con");
        e.printStackTrace();
        return "GET: Bad Con [" + urlStr + "]";
    }
}

---

From source file:Main.java

public static boolean isUpdateAvailable(Context paramContext, String paramString) {
    try {/*from  w  w w  .  j ava 2 s. c o m*/
        HttpURLConnection localHttpURLConnection = (HttpURLConnection) new URL(paramString).openConnection();
        long l1 = localHttpURLConnection.getHeaderFieldDate("Last-Modified", System.currentTimeMillis());
        localHttpURLConnection.disconnect();
        long l2 = PreferenceManager.getDefaultSharedPreferences(paramContext.getApplicationContext())
                .getLong(paramString, 0L);
        boolean toReturn = l1 > l2;

        return toReturn;
    } catch (Throwable localThrowable) {
        localThrowable.printStackTrace();
    }
    return false;
}

---

From source file:org.elegosproject.romupdater.DownloadManager.java

public static boolean checkHttpFile(String url) {
    try {/*from   ww w .j  a va  2 s .c om*/
        HttpParams httpParameters = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(httpParameters, 3000);
        Log.i(TAG, "Testing " + url + "...");
        URL theUrl = new URL(url);
        HttpURLConnection connection = (HttpURLConnection) theUrl.openConnection();
        if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
            connection.disconnect();
        } else {
            Log.i(TAG, "HTTP Response code: " + connection.getResponseCode());
            return false;
        }
    } catch (IOException e) {
        Log.e(TAG, e.toString());
        return false;
    }
    return true;
}

---

From source file:com.melchor629.musicote.Utils.java

/**
 * HostTest/* w w  w . j av  a 2s . co m*/
 * Sirve para comprobar si est encendido el PC
 * Nothing to see here...
 *
 * @param host HOST IP
 * @return int response
 */
public static int HostTest(String host) {
    int response = 0;

    try {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
        URL urlhttp = new URL("http://" + host);
        HttpURLConnection http = (HttpURLConnection) urlhttp.openConnection();
        http.setReadTimeout(1000);
        response = http.getResponseCode();
        http.disconnect();
    } catch (Exception e) {
        Log.e("Comprobando", "Excepcin HTTPURL: " + e.toString() + " " + host);
    }

    return response;
}

---

From source file:net.sf.taverna.t2.renderers.RendererUtils.java

public static long getSizeInBytes(Path path) throws IOException {
    if (isValue(path))
        return Files.size(path);
    if (!isReference(path))
        throw new IllegalArgumentException("Path is not a value or reference");

    URL url = getReference(path).toURL();
    switch (url.getProtocol().toLowerCase()) {
    case "http":
    case "https":
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("HEAD");
        conn.connect();//from www.j av  a  2  s.c  o  m
        String contentLength = conn.getHeaderField("Content-Length");
        conn.disconnect();
        if (contentLength != null && !contentLength.isEmpty())
            return Long.parseLong(contentLength);
        return -1;
    case "file":
        return FileUtils.toFile(url).length();
    default:
        return -1;
    }
}

---

From source file:Main.java

public static String accessToFlashAir(String uri) throws IOException {
    URL url = new URL(uri);
    HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();

    String result = null;// w w  w .j  a v  a  2s  .  co m
    try {
        InputStream in = new BufferedInputStream(urlConnection.getInputStream());
        result = inputStreamToString(in);
        in.close();
    } finally {
        urlConnection.disconnect();
    }

    return result;
}

---

From source file:net.ftb.data.news.RSSReader.java

public static List<NewsArticle> readRSS() {
    try {//from   w  w  w  .  j  a  va2  s .co m
        List<NewsArticle> news = Lists.newArrayList();

        DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
        URL u = new URL(Locations.feedURL);
        HttpURLConnection conn = (HttpURLConnection) u.openConnection();
        conn.connect();
        if (conn.getResponseCode() != 200) {
            Logger.logWarn("News download failed");
            AppUtils.debugConnection(conn);
            conn.disconnect();
            return null;
        }
        Document doc = builder.parse(conn.getInputStream());
        NodeList nodes = doc.getElementsByTagName("item");

        for (int i = 0; i < nodes.getLength(); i++) {
            Element element = (Element) nodes.item(i);
            NewsArticle article = new NewsArticle();
            article.setTitle(getTextValue(element, "title"));
            article.setHyperlink(getTextValue(element, "link"));
            article.setBody(getTextValue(element, "content:encoded"));
            article.setDate(getTextValue(element, "pubDate"));
            news.add(article);
        }

        return news;
    } catch (Exception ex) {
        Logger.logWarn("News download failed", ex);
        return null;
    }
}

---

From source file:Main.java

public static String SimpleHttp(String urlStr) throws Exception {

    URL url = new URL(urlStr);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    int resCode = conn.getResponseCode();
    InputStream input = null;//from w  w w.  j a  v  a2s  .  c  o  m
    String result = null;
    if (resCode == 200) {
        input = conn.getInputStream();
        result = toString(input);
        input.close();
        conn.disconnect();
    } else {
        throw new Exception("connect failed");
    }

    return result;
}

---

From source file:HttpUtil.java

public static long getURLLastModified(String url) {
    URL Url;//  w ww .j a  v  a2  s  .c  o m
    HttpURLConnection httpconn = null;
    long modtime;
    try {
        Url = new URL(url);
        httpconn = (HttpURLConnection) Url.openConnection();
        modtime = httpconn.getLastModified();
    } catch (Exception e) {
        modtime = -1;
    }
    if (httpconn != null)
        httpconn.disconnect();
    System.out.println("URL:" + url + " LastModified:" + new Date(modtime).toString());
    return modtime;
}

---

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