These proxies could handle HTTPS certificates and other things.

## Proxy Forwarded Headers { #proxy-forwarded-headers }

A **proxy** in front of your application would normally set some headers on the fly before sending the requests to your **server** to let the server know that the request was **forwarded** by the proxy, letting it know the original (public) URL, including the domain, that it is using HTTPS, etc.

* media type: media type (do not translate to "tipo de medio")
* instantiate: crear un instance (do not translate to "instanciar")
* OAuth2 Scopes: Scopes de OAuth2 (do not translate to "Alcances de OAuth2")
* on the fly: sobre la marcha (do not translate to "al vuelo")
* terminal: terminal (femenine, as in "la terminal")
* terminals: terminales (plural femenine, as in "las terminales")

This **proxy** would normally set some HTTP headers on the fly before transmitting the request to the **application server**, to let the application server know that the request is being **forwarded** by the proxy.

/// note | Technical Details

The proxy headers are:

    assertThrows(
        IllegalArgumentException.class,
        () -> Traverser.forGraph(createDirectedGraph()).breadthFirst('a'));
  }

  /**
   * Checks that the elements of the iterable are calculated on the fly. Concretely, that means that
   * {@link SuccessorsFunction#successors(Object)} can only be called for a subset of all nodes.
   */
  @Test
  public void forGraph_breadthFirstIterable_emptyGraph() {

    assertThrows(
        IllegalArgumentException.class,
        () -> Traverser.forGraph(createDirectedGraph()).breadthFirst('a'));
  }

  /**
   * Checks that the elements of the iterable are calculated on the fly. Concretely, that means that
   * {@link SuccessorsFunction#successors(Object)} can only be called for a subset of all nodes.
   */
  @Test
  public void forGraph_breadthFirstIterable_emptyGraph() {

Auch wenn Ihr gesamter Code unter der Annahme geschrieben ist, dass es nur `/app` gibt.

{* ../../docs_src/behind_a_proxy/tutorial001.py hl[6] *}

     *   lock.lock();
     * }
     * operation();
     * for (Lock lock : locks) {
     *   lock.unlock();
     * }
     *
     * If we only held the int[] stripes, translating it on the fly to L's, the original locks might
     * be garbage collected after locking them, ending up in a huge mess.
     */
    @SuppressWarnings("unchecked") // we carefully replaced all keys with their respective L's

				"text/vnd.curl",
				"text/vnd.curl.dcurl",
				"text/vnd.curl.scurl",
				"text/vnd.curl.mcurl",
				"text/vnd.dmclientscript",
				"text/vnd.esmertec.theme-descriptor",
				"text/vnd.fly",
				"text/vnd.fmi.flexstor",
				"text/vnd.graphviz",
				"text/vnd.in3d.3dml",
				"text/vnd.in3d.spot",
				"text/vnd.iptc.anpa",
				"text/vnd.iptc.newsml",
				"text/vnd.iptc.nitf",

You know the song, perhaps?'

  `I've heard something like it,' said Alice.

  `It goes on, you know,' the Hatter continued, `in this way:--

            "Up above the world you fly,
            Like a tea-tray in the sky.
                    Twinkle, twinkle--"'

Here the Dormouse shook itself, and began singing in its sleep
`Twinkle, twinkle, twinkle, twinkle--' and went on so long that

fldrv.com

// FlutterFlow : https://flutterflow.io
// Submitted by Anton Emelyanov <******@****.***>
flutterflow.app

// fly.io: https://fly.io
// Submitted by Kurt Mackey <kurt@fly.io>
fly.dev
shw.io
edgeapp.net

// Forgerock : https://www.forgerock.com
// Submitted by Roderick Parr <******@****.***>
forgeblocks.com
id.forgerock.io