Example usage for java.net HttpURLConnection getHeaderField

List of usage examples for java.net HttpURLConnection getHeaderField

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Introduction

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

Prototype

public String getHeaderField(int n)

Source Link

Document

Returns the value for the n th header field.

Usage

From source file:net.andylizi.colormotd.Updater.java

private boolean checkUpdate() {
    if (file != null && file.exists()) {
        cancel();/*from   w w  w  .j a  v a  2 s  .  c  o m*/
    }
    URL url;
    try {
        url = new URL(UPDATE_URL);
    } catch (MalformedURLException ex) {
        if (DEBUG) {
            ex.printStackTrace();
        }
        return false;
    }
    try {
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setUseCaches(false);
        conn.setRequestMethod("GET");
        conn.addRequestProperty("User-Agent", userAgent);
        if (etag != null) {
            conn.addRequestProperty("If-None-Match", etag);
        }
        conn.addRequestProperty("Accept", "application/json,text/plain,*/*;charset=utf-8");
        conn.addRequestProperty("Accept-Encoding", "gzip");
        conn.addRequestProperty("Cache-Control", "no-cache");
        conn.addRequestProperty("Date", new Date().toString());
        conn.addRequestProperty("Connection", "close");

        conn.setDoInput(true);
        conn.setDoOutput(false);
        conn.setConnectTimeout(2000);
        conn.setReadTimeout(2000);

        conn.connect();

        if (conn.getHeaderField("ETag") != null) {
            etag = conn.getHeaderField("ETag");
        }
        if (DEBUG) {
            logger.log(Level.INFO, "DEBUG ResponseCode: {0}", conn.getResponseCode());
            logger.log(Level.INFO, "DEBUG ETag: {0}", etag);
        }
        if (conn.getResponseCode() == HttpURLConnection.HTTP_NOT_MODIFIED) {
            return false;
        } else if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
            return false;
        }

        BufferedReader input = null;
        if (conn.getContentEncoding() != null && conn.getContentEncoding().contains("gzip")) {
            input = new BufferedReader(
                    new InputStreamReader(new GZIPInputStream(conn.getInputStream()), "UTF-8"), 1);
        } else {
            input = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"), 1);
        }

        StringBuilder builder = new StringBuilder();
        String buffer = null;
        while ((buffer = input.readLine()) != null) {
            builder.append(buffer);
        }
        try {
            JSONObject jsonObj = (JSONObject) new JSONParser().parse(builder.toString());
            int build = ((Number) jsonObj.get("build")).intValue();
            if (build <= ColorMOTD.buildVersion) {
                return false;
            }
            String version = (String) jsonObj.get("version");
            String msg = (String) jsonObj.get("msg");
            String download_url = (String) jsonObj.get("url");
            newVersion = new NewVersion(version, build, msg, download_url);
            return true;
        } catch (ParseException ex) {
            if (DEBUG) {
                ex.printStackTrace();
            }
            exception = ex;
            return false;
        }
    } catch (SocketTimeoutException ex) {
        return false;
    } catch (IOException ex) {
        if (DEBUG) {
            ex.printStackTrace();
        }
        exception = ex;
        return false;
    }
}

From source file:eionet.cr.harvest.PullHarvest.java

/**
 *
 * @param connection//  ww  w  . ja  va  2s.com
 * @return
 * @throws MalformedURLException
 */
private String getRedirectUrl(HttpURLConnection connection) throws MalformedURLException {

    String location = connection.getHeaderField("Location");
    if (location != null) {
        try {
            // If location does not seem to be an absolute URI, consider it relative to the
            // URL of this URL connection.
            if (!(new URI(location).isAbsolute())) {
                location = new URL(connection.getURL(), location).toString();
            }
        } catch (URISyntaxException e) {
            // Ignoring on purpose.
        }

        // we want to avoid fragment parts in CR harvest source URLs
        location = StringUtils.substringBefore(location, "#");
    }

    return location;
}

From source file:org.cytoscape.app.internal.net.server.CyHttpdImplTest.java

@Test
public void testHttpd() throws Exception {
    final CyHttpd httpd = (new CyHttpdFactoryImpl()).createHttpd(new LocalhostServerSocketFactory(2608));
    final CyHttpResponseFactory responseFactory = new CyHttpResponseFactoryImpl();
    httpd.addResponder(new CyHttpResponder() {
        public Pattern getURIPattern() {
            return Pattern.compile("^/testA$");
        }//from   www  .  jav  a  2 s .com

        public CyHttpResponse respond(CyHttpRequest request, Matcher matchedURI) {
            return responseFactory.createHttpResponse(HttpStatus.SC_OK, "testA response ok", "text/html");
        }
    });

    httpd.addResponder(new CyHttpResponder() {
        public Pattern getURIPattern() {
            return Pattern.compile("^/testB$");
        }

        public CyHttpResponse respond(CyHttpRequest request, Matcher matchedURI) {
            return responseFactory.createHttpResponse(HttpStatus.SC_OK, "testB response ok", "text/html");
        }
    });

    httpd.addBeforeResponse(new CyHttpBeforeResponse() {
        public CyHttpResponse intercept(CyHttpRequest request) {
            if (request.getMethod().equals("OPTIONS"))
                return responseFactory.createHttpResponse(HttpStatus.SC_OK, "options intercepted", "text/html");
            else
                return null;
        }
    });

    httpd.addAfterResponse(new CyHttpAfterResponse() {
        public CyHttpResponse intercept(CyHttpRequest request, CyHttpResponse response) {
            response.getHeaders().put("SomeRandomHeader", "WowInterceptWorks");
            return response;
        }
    });

    assertFalse(httpd.isRunning());
    httpd.start();
    assertTrue(httpd.isRunning());

    final String url = "http://localhost:2608/";

    // test if normal response works
    HttpURLConnection connection = connectToURL(url + "testA", "GET");
    assertTrue(connection.getResponseCode() == HttpURLConnection.HTTP_OK);
    assertEquals(readConnection(connection), "testA response ok");

    connection = connectToURL(url + "testB", "GET");
    assertTrue(connection.getResponseCode() == HttpURLConnection.HTTP_OK);
    assertEquals(readConnection(connection), "testB response ok");

    // test if 404 response works
    connection = connectToURL(url + "testX", "GET");
    assertTrue(connection.getResponseCode() == HttpURLConnection.HTTP_NOT_FOUND);

    // test if before intercept works
    connection = connectToURL(url + "testA", "OPTIONS");
    assertTrue(connection.getResponseCode() == HttpURLConnection.HTTP_OK);
    assertEquals(readConnection(connection), "options intercepted");

    // test if after intercept works
    connection = connectToURL(url + "testA", "GET");
    assertTrue(connection.getResponseCode() == HttpURLConnection.HTTP_OK);
    assertEquals(connection.getHeaderField("SomeRandomHeader"), "WowInterceptWorks");

    httpd.stop();
    assertFalse(httpd.isRunning());
}

From source file:mobac.mapsources.loader.MapPackManager.java

public String downloadMD5SumList() throws IOException, UpdateFailedException {
    String md5eTag = Settings.getInstance().mapSourcesUpdate.etag;
    log.debug("Last md5 eTag: " + md5eTag);
    String updateUrl = System.getProperty("mobac.updateurl");
    if (updateUrl == null)
        throw new RuntimeException("Update url not present");

    byte[] data = null;

    // Proxy p = new Proxy(Type.HTTP, InetSocketAddress.createUnresolved("localhost", 8888));
    HttpURLConnection conn = (HttpURLConnection) new URL(updateUrl).openConnection();
    conn.setInstanceFollowRedirects(false);
    if (md5eTag != null)
        conn.addRequestProperty("If-None-Match", md5eTag);
    int responseCode = conn.getResponseCode();
    if (responseCode == HttpURLConnection.HTTP_NOT_MODIFIED) {
        log.debug("No newer md5 file available");
        return null;
    }/*from w  w  w  . j av a 2  s .c  om*/
    if (responseCode != HttpURLConnection.HTTP_OK)
        throw new UpdateFailedException(
                "Invalid HTTP response: " + responseCode + " for update url " + conn.getURL());
    // Case HTTP_OK
    InputStream in = conn.getInputStream();
    data = Utilities.getInputBytes(in);
    in.close();
    Settings.getInstance().mapSourcesUpdate.etag = conn.getHeaderField("ETag");
    log.debug("New md5 file retrieved");
    String md5sumList = new String(data);
    return md5sumList;
}

From source file:net.andylizi.colormotd.anim.updater.Updater.java

private boolean checkUpdate() {
    if (new File(Bukkit.getUpdateFolderFile(), fileName).exists()) {
        cancel();/*  w w w .  ja  v  a2  s.  c om*/
    }
    URL url;
    try {
        url = new URL(UPDATE_URL);
    } catch (MalformedURLException ex) {
        if (DEBUG) {
            ex.printStackTrace();
        }
        return false;
    }
    try {
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setUseCaches(false);
        conn.setRequestMethod("GET");
        conn.addRequestProperty("User-Agent", USER_AGENT);
        if (etag != null) {
            conn.addRequestProperty("If-None-Match", etag);
        }
        conn.addRequestProperty("Accept", "application/json,text/plain,*/*;charset=utf-8");
        conn.addRequestProperty("Accept-Encoding", "gzip");
        conn.addRequestProperty("Cache-Control", "no-cache");
        conn.addRequestProperty("Date", new Date().toString());
        conn.addRequestProperty("Connection", "close");

        conn.setDoInput(true);
        conn.setDoOutput(false);
        conn.setConnectTimeout(2000);
        conn.setReadTimeout(2000);

        conn.connect();

        if (conn.getHeaderField("ETag") != null) {
            etag = conn.getHeaderField("ETag");
        }
        if (DEBUG) {
            logger.log(Level.INFO, "DEBUG ResponseCode: {0}", conn.getResponseCode());
            logger.log(Level.INFO, "DEBUG ETag: {0}", etag);
        }
        if (conn.getResponseCode() == HttpURLConnection.HTTP_NOT_MODIFIED) {
            return false;
        } else if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
            return false;
        }

        BufferedReader input = null;
        if (conn.getContentEncoding() != null && conn.getContentEncoding().contains("gzip")) {
            input = new BufferedReader(
                    new InputStreamReader(new GZIPInputStream(conn.getInputStream()), "UTF-8"), 1);
        } else {
            input = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"), 1);
        }

        StringBuilder builder = new StringBuilder();
        String buffer = null;
        while ((buffer = input.readLine()) != null) {
            builder.append(buffer);
        }
        try {
            JSONObject jsonObj = (JSONObject) new JSONParser().parse(builder.toString());
            int build = ((Number) jsonObj.get("build")).intValue();
            if (build <= buildVersion) {
                return false;
            }
            String version = (String) jsonObj.get("version");
            String msg = (String) jsonObj.get("msg");
            String download_url = (String) jsonObj.get("url");
            newVersion = new NewVersion(version, build, msg, download_url);
            return true;
        } catch (ParseException ex) {
            if (DEBUG) {
                ex.printStackTrace();
            }
            exception = ex;
            return false;
        }
    } catch (SocketTimeoutException ex) {
        return false;
    } catch (IOException ex) {
        if (DEBUG) {
            ex.printStackTrace();
        }
        exception = ex;
        return false;
    }
}

From source file:osmcd.mapsources.loader.MapPackManager.java

public String downloadMD5SumList() throws IOException, UpdateFailedException {
    String md5eTag = Settings.getInstance().mapSourcesUpdate.etag;
    log.debug("Last md5 eTag: " + md5eTag);
    String updateUrl = System.getProperty("osmcd.updateurl");
    if (updateUrl == null)
        throw new RuntimeException("Update url not present");

    byte[] data = null;

    // Proxy p = new Proxy(Type.HTTP, InetSocketAddress.createUnresolved("localhost", 8888));
    HttpURLConnection conn = (HttpURLConnection) new URL(updateUrl).openConnection();
    conn.setInstanceFollowRedirects(false);
    if (md5eTag != null)
        conn.addRequestProperty("If-None-Match", md5eTag);
    int responseCode = conn.getResponseCode();
    if (responseCode == HttpURLConnection.HTTP_NOT_MODIFIED) {
        log.debug("No newer md5 file available");
        return null;
    }/*from ww w.j  a  v  a  2 s . c  om*/
    if (responseCode != HttpURLConnection.HTTP_OK)
        throw new UpdateFailedException(
                "Invalid HTTP response: " + responseCode + " for update url " + conn.getURL());
    // Case HTTP_OK
    InputStream in = conn.getInputStream();
    data = Utilities.getInputBytes(in);
    in.close();
    Settings.getInstance().mapSourcesUpdate.etag = conn.getHeaderField("ETag");
    log.debug("New md5 file retrieved");
    String md5sumList = new String(data);
    return md5sumList;
}

From source file:org.apache.taverna.activities.interaction.InteractionActivityRunnable.java

private void postInteractionMessage(final String id, final Entry entry, final String interactionUrlString,
        final String runId) throws IOException {

    entry.addLink(StringEscapeUtils.escapeXml(interactionUrlString), "presentation");
    entry.setContentAsXhtml("<p><a href=\"" + StringEscapeUtils.escapeXml(interactionUrlString) + "\">Open: "
            + StringEscapeUtils.escapeXml(interactionUrlString) + "</a></p>");

    URL feedUrl;//from  w w  w.  j av a2s .  co  m

    feedUrl = new URL(interactionPreference.getFeedUrlString());
    final String entryContent = ((FOMElement) entry).toFormattedString();
    final HttpURLConnection httpCon = (HttpURLConnection) feedUrl.openConnection();
    httpCon.setDoOutput(true);
    httpCon.setRequestProperty("Content-Type", "application/atom+xml;type=entry;charset=UTF-8");
    httpCon.setRequestProperty("Content-Length", "" + entryContent.length());
    httpCon.setRequestProperty("Slug", id);
    httpCon.setRequestMethod("POST");
    httpCon.setConnectTimeout(5000);
    final OutputStream outputStream = httpCon.getOutputStream();
    IOUtils.write(entryContent, outputStream, "UTF-8");
    outputStream.close();
    final int response = httpCon.getResponseCode();
    if ((response < 0) || (response >= 400)) {
        logger.error("Received response code" + response);
        throw (new IOException("Received response code " + response));
    }
    if (response == HttpURLConnection.HTTP_CREATED) {
        interactionRecorder.addResource(runId, id, httpCon.getHeaderField("Location"));
    }
}

From source file:org.wso2.carbon.apimgt.impl.publishers.WSO2APIPublisher.java

private String getIconUrlWithHttpRedirect(String imageUrl) throws IOException {
    URL url = new URL(imageUrl);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    int statusCode = conn.getResponseCode();

    if (statusCode == HttpURLConnection.HTTP_MOVED_PERM || statusCode == HttpURLConnection.HTTP_MOVED_TEMP
            || statusCode == HttpURLConnection.HTTP_SEE_OTHER) {
        return conn.getHeaderField("Location");
    } else {/*from   w  ww  .j  a v a2  s .co  m*/
        return imageUrl;
    }
}

From source file:com.mhs.hboxmaintenanceserver.utils.Utils.java

/**
 * Send form post/*from  w  w w . j  ava  2s .co  m*/
 *
 * @param form
 * @param forms
 * @return
 * @throws MalformedURLException
 * @throws IOException
 */
public static Form sendPostForm(Form form, Form[] forms) throws MalformedURLException, IOException {
    URL obj = new URL(form.getUrl().trim());
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();

    con.setDoInput(true);

    if (forms != null) {
        con.setDoOutput(true);

        // optional default is GET
        con.setRequestMethod("POST");
    }

    //add request header
    con.setRequestProperty("User-Agent", DefaultConfig.USER_AGENT);
    con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
    con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
    con.setRequestProperty("Referer", form.getReferer());
    con.setRequestProperty("Origin", form.getOrigin());
    con.setRequestProperty("Host", form.getHost());

    if (COOKIE != null) {
        try {
            con.setRequestProperty("Cookie", COOKIE);
        } catch (Exception ex) {
            DCXLogger.error(Utils.class, Level.SEVERE, ex);
        }
    }

    String urlParameters = "";

    if (forms != null) {
        for (Form fb : forms) {
            urlParameters += "&" + fb.getKey() + "=" + fb.getValue();
        }

        urlParameters = urlParameters.substring(1);

        try (DataOutputStream wr = new DataOutputStream(con.getOutputStream())) {
            wr.writeBytes(urlParameters);
            wr.close();
        }
    }
    if (con.getHeaderField("Set-Cookie") != null) {
        COOKIE = con.getHeaderField("Set-Cookie");
    }

    Form form1 = new Form();
    form1.setResponseCode(con.getResponseCode());
    StringBuilder response = new StringBuilder();

    if (form1.getResponseCode() == 200) {
        try (BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()))) {
            String inputLine;

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();
        }

        form1.setResult(response.toString());
    }
    return form1;
}

From source file:org.apache.hadoop.security.token.delegation.web.TestWebDelegationToken.java

private void testDelegationTokenAuthenticatorCalls(final boolean useQS) throws Exception {
    final Server jetty = createJettyServer();
    Context context = new Context();
    context.setContextPath("/foo");
    jetty.setHandler(context);/* w w w . j av  a2 s.  c o m*/
    context.addFilter(new FilterHolder(AFilter.class), "/*", 0);
    context.addServlet(new ServletHolder(PingServlet.class), "/bar");

    try {
        jetty.start();
        final URL nonAuthURL = new URL(getJettyURL() + "/foo/bar");
        URL authURL = new URL(getJettyURL() + "/foo/bar?authenticated=foo");
        URL authURL2 = new URL(getJettyURL() + "/foo/bar?authenticated=bar");

        DelegationTokenAuthenticatedURL.Token token = new DelegationTokenAuthenticatedURL.Token();
        final DelegationTokenAuthenticatedURL aUrl = new DelegationTokenAuthenticatedURL();
        aUrl.setUseQueryStringForDelegationToken(useQS);

        try {
            aUrl.getDelegationToken(nonAuthURL, token, FOO_USER);
            Assert.fail();
        } catch (Exception ex) {
            Assert.assertTrue(ex.getMessage().contains("401"));
        }

        aUrl.getDelegationToken(authURL, token, FOO_USER);
        Assert.assertNotNull(token.getDelegationToken());
        Assert.assertEquals(new Text("token-kind"), token.getDelegationToken().getKind());

        aUrl.renewDelegationToken(authURL, token);

        try {
            aUrl.renewDelegationToken(nonAuthURL, token);
            Assert.fail();
        } catch (Exception ex) {
            Assert.assertTrue(ex.getMessage().contains("401"));
        }

        aUrl.getDelegationToken(authURL, token, FOO_USER);

        try {
            aUrl.renewDelegationToken(authURL2, token);
            Assert.fail();
        } catch (Exception ex) {
            Assert.assertTrue(ex.getMessage().contains("403"));
        }

        aUrl.getDelegationToken(authURL, token, FOO_USER);

        aUrl.cancelDelegationToken(authURL, token);

        aUrl.getDelegationToken(authURL, token, FOO_USER);

        aUrl.cancelDelegationToken(nonAuthURL, token);

        aUrl.getDelegationToken(authURL, token, FOO_USER);

        try {
            aUrl.renewDelegationToken(nonAuthURL, token);
        } catch (Exception ex) {
            Assert.assertTrue(ex.getMessage().contains("401"));
        }

        aUrl.getDelegationToken(authURL, token, "foo");

        UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
        ugi.addToken(token.getDelegationToken());
        ugi.doAs(new PrivilegedExceptionAction<Void>() {
            @Override
            public Void run() throws Exception {
                HttpURLConnection conn = aUrl.openConnection(nonAuthURL,
                        new DelegationTokenAuthenticatedURL.Token());
                Assert.assertEquals(HttpServletResponse.SC_OK, conn.getResponseCode());
                if (useQS) {
                    Assert.assertNull(conn.getHeaderField("UsingHeader"));
                    Assert.assertNotNull(conn.getHeaderField("UsingQueryString"));
                } else {
                    Assert.assertNotNull(conn.getHeaderField("UsingHeader"));
                    Assert.assertNull(conn.getHeaderField("UsingQueryString"));
                }
                return null;
            }
        });

    } finally {
        jetty.stop();
    }
}