fix: getting cppcheck version throws an exception

Author: garbbraf

com.googlecode.cppcheclipse.core/src/com/googlecode/cppcheclipse/core/command/UpdateCheckCommand.java

@@ -15,7 +15,7 @@
 
 public class UpdateCheckCommand {
 
-	private static final String UPDATE_URL = "http://cppcheck.sourceforge.net/version.txt";
+	private static final String UPDATE_URL = "https://cppcheck.sourceforge.net/version.txt";
 
 	public UpdateCheckCommand() {
 

com.googlecode.cppcheclipse.core/src/com/googlecode/cppcheclipse/core/utils/HttpClientService.java

@@ -92,27 +92,38 @@ private boolean isProxiesEnabled() {
 		return false;
 	}
 
-	/* (non-Javadoc)
-	 * @see com.googlecode.cppcheclipse.core.utils.IHttpClient#executeGetRequest(java.net.URL)
-	 */
-	public InputStream executeGetRequest(URL url) throws URISyntaxException, IOException {
-		Proxy proxy = getProxy(url.toURI());
-		
+	private HttpURLConnection newGetRequest(URL url, Proxy proxy) throws IOException {
 		HttpURLConnection connection;
-		if (proxy != null) 
+		if (proxy != null)
 			connection = (HttpURLConnection) url.openConnection(proxy);
-		else 
+		else
 			connection = (HttpURLConnection) url.openConnection();
 		connection.setRequestMethod("GET");
 		connection.setDoOutput(true);
 		connection.setReadTimeout(10000);
+		return connection;
+	}
+
+	/* (non-Javadoc)
+	 * @see com.googlecode.cppcheclipse.core.utils.IHttpClient#executeGetRequest(java.net.URL)
+	 */
+	public InputStream executeGetRequest(URL url) throws URISyntaxException, IOException {
+		Proxy proxy = getProxy(url.toURI());
+
+		HttpURLConnection connection = newGetRequest(url, proxy);
+
+		if (connection.getResponseCode() == HttpURLConnection.HTTP_MOVED_TEMP ||
+			connection.getResponseCode() == HttpURLConnection.HTTP_MOVED_PERM) {
+			String newUrl = connection.getHeaderField("Location");
+			connection = newGetRequest(new URL(newUrl), proxy);
+		}
+
 		if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
-			throw new IOException("Wrong response code: "
-					+ connection.getResponseMessage());
+			throw new IOException("Wrong response code: " + connection.getResponseMessage());
 		}
 		return connection.getInputStream();
 	}
-	
+
 	/**
 			 * Binds the {@link IProxyService} service reference.
 			 *