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diff --git a/src/be/nikiroo/utils/Proxy.java b/src/be/nikiroo/utils/Proxy.java
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+++ b/src/be/nikiroo/utils/Proxy.java
@@ -0,0 +1,150 @@
+package be.nikiroo.utils;
+
+import java.net.Authenticator;
+import java.net.PasswordAuthentication;
+
+/**
+ * Simple proxy helper to select a default internet proxy.
+ * 
+ * @author niki
+ */
+public class Proxy {
+	/**
+	 * Use the proxy described by this string:
+	 * <ul>
+	 * <li><tt>((user(:pass)@)proxy:port)</tt></li>
+	 * <li>System proxy is noted <tt>:</tt></li>
+	 * </ul>
+	 * Some examples:
+	 * <ul>
+	 * <li><tt></tt> → do not use any proxy</li>
+	 * <li><tt>:</tt> → use the system proxy</li>
+	 * <li><tt>user@prox.com</tt> → use the proxy "prox.com" with default port
+	 * and user "user"</li>
+	 * <li><tt>prox.com:8080</tt> → use the proxy "prox.com" on port 8080</li>
+	 * <li><tt>user:pass@prox.com:8080</tt> → use "prox.com" on port 8080
+	 * authenticated as "user" with password "pass"</li>
+	 * <li><tt>user:pass@:</tt> → use the system proxy authenticated as user
+	 * "user" with password "pass"</li>
+	 * </ul>
+	 * 
+	 * @param proxy
+	 *            the proxy
+	 */
+	static public void use(String proxy) {
+		if (proxy != null && !proxy.isEmpty()) {
+			String user = null;
+			String password = null;
+			int port = 8080;
+
+			if (proxy.contains("@")) {
+				int pos = proxy.indexOf("@");
+				user = proxy.substring(0, pos);
+				proxy = proxy.substring(pos + 1);
+				if (user.contains(":")) {
+					pos = user.indexOf(":");
+					password = user.substring(pos + 1);
+					user = user.substring(0, pos);
+				}
+			}
+
+			if (proxy.equals(":")) {
+				proxy = null;
+			} else if (proxy.contains(":")) {
+				int pos = proxy.indexOf(":");
+				try {
+					port = Integer.parseInt(proxy.substring(0, pos));
+					proxy = proxy.substring(pos + 1);
+				} catch (Exception e) {
+				}
+			}
+
+			if (proxy == null) {
+				Proxy.useSystemProxy(user, password);
+			} else {
+				Proxy.useProxy(proxy, port, user, password);
+			}
+		}
+	}
+
+	/**
+	 * Use the system proxy.
+	 */
+	static public void useSystemProxy() {
+		useSystemProxy(null, null);
+	}
+
+	/**
+	 * Use the system proxy with the given login/password, for authenticated
+	 * proxies.
+	 * 
+	 * @param user
+	 *            the user name or login
+	 * @param password
+	 *            the password
+	 */
+	static public void useSystemProxy(String user, String password) {
+		System.setProperty("java.net.useSystemProxies", "true");
+		auth(user, password);
+	}
+
+	/**
+	 * Use the give proxy.
+	 * 
+	 * @param host
+	 *            the proxy host name or IP address
+	 * @param port
+	 *            the port to use
+	 */
+	static public void useProxy(String host, int port) {
+		useProxy(host, port, null, null);
+	}
+
+	/**
+	 * Use the given proxy with the given login/password, for authenticated
+	 * proxies.
+	 * 
+	 * @param user
+	 *            the user name or login
+	 * @param password
+	 *            the password
+	 * @param host
+	 *            the proxy host name or IP address
+	 * @param port
+	 *            the port to use
+	 * @param user
+	 *            the user name or login
+	 * @param password
+	 *            the password
+	 */
+	static public void useProxy(String host, int port, String user,
+			String password) {
+		System.setProperty("http.proxyHost", host);
+		System.setProperty("http.proxyPort", Integer.toString(port));
+		auth(user, password);
+	}
+
+	/**
+	 * Select the default authenticator for proxy requests.
+	 * 
+	 * @param user
+	 *            the user name or login
+	 * @param password
+	 *            the password
+	 */
+	static private void auth(final String user, final String password) {
+		if (user != null && password != null) {
+			Authenticator proxy = new Authenticator() {
+				@Override
+				protected PasswordAuthentication getPasswordAuthentication() {
+					if (getRequestorType() == RequestorType.PROXY) {
+						return new PasswordAuthentication(user,
+								password.toCharArray());
+					}
+					return null;
+				}
+			};
+			Authenticator.setDefault(proxy);
+		}
+	}
+}