コード例 #1
0
  /**
   * Creates a proxy server instance from the given properties.
   *
   * <p>Currently the default http.* proxy properties are supported as well as properties specific
   * for AHC.
   *
   * @param properties the properties to evaluate. Must not be null.
   * @return a ProxyServer instance or null, if no valid properties were set.
   * @see <a
   *     href="http://download.oracle.com/javase/1.4.2/docs/guide/net/properties.html">Networking
   *     Properties</a>
   * @see #PROXY_HOST
   * @see #PROXY_PORT
   * @see #PROXY_PROTOCOL
   * @see #PROXY_NONPROXYHOSTS
   */
  public static ProxyServer createProxy(Properties properties) {
    String host = System.getProperty(PROXY_HOST);

    if (host != null) {
      int port = Integer.valueOf(System.getProperty(PROXY_PORT, "80"));

      Protocol protocol;
      try {
        protocol = Protocol.valueOf(System.getProperty(PROXY_PROTOCOL, "HTTP"));
      } catch (IllegalArgumentException e) {
        protocol = Protocol.HTTP;
      }

      ProxyServer proxyServer =
          new ProxyServer(
              protocol,
              host,
              port,
              System.getProperty(PROXY_USER),
              System.getProperty(PROXY_PASSWORD));

      String nonProxyHosts = System.getProperties().getProperty(PROXY_NONPROXYHOSTS);
      if (nonProxyHosts != null) {
        for (String spec : nonProxyHosts.split("\\|")) {
          proxyServer.addNonProxyHost(spec);
        }
      }

      return proxyServer;
    }

    return null;
  }
コード例 #2
0
  /**
   * Checks whether proxy should be used according to nonProxyHosts settings of it, or we want to go
   * directly to target host. If <code>null</code> proxy is passed in, this method returns true --
   * since there is NO proxy, we should avoid to use it. Simple hostname pattern matching using "*"
   * are supported, but only as prefixes. See
   * http://download.oracle.com/javase/1.4.2/docs/guide/net/properties.html
   *
   * @param proxyServer
   * @param target the hostname
   * @return true if we have to avoid proxy use (obeying non-proxy hosts settings), false otherwise.
   */
  public static boolean avoidProxy(final ProxyServer proxyServer, final String target) {
    if (proxyServer != null) {
      final String targetHost = target.toLowerCase();

      List<String> nonProxyHosts = proxyServer.getNonProxyHosts();

      if (nonProxyHosts != null && nonProxyHosts.size() > 0) {
        for (String nonProxyHost : nonProxyHosts) {
          if (nonProxyHost.startsWith("*")
              && nonProxyHost.length() > 1
              && targetHost.endsWith(nonProxyHost.substring(1).toLowerCase())) {
            return true;
          } else if (nonProxyHost.equalsIgnoreCase(targetHost)) {
            return true;
          }
        }
      }

      return false;
    } else {
      return true;
    }
  }