* `http://localhost`
* `https://localhost`
* `http://localhost:8080`

Aunque todos están en `localhost`, usan protocolos o puertos diferentes, por lo tanto, son "orígenes" diferentes.

## Pasos { #steps }

      prefixes = ["/api/v1"]

  [http.routers]

    [http.routers.app-http]
      entryPoints = ["http"]
      service = "app"
      rule = "PathPrefix(`/api/v1`)"
      middlewares = ["api-stripprefix"]

  [http.services]

    [http.services.app]
      [http.services.app.loadBalancer]
        [[http.services.app.loadBalancer.servers]]
          url = "http://127.0.0.1:8000"
```

		{xForwardedScheme, "https", "https"},
		{xForwardedScheme, "http", "http"},
		{xForwardedScheme, "HTTP", "http"},
		{forwarded, `For="[2001:db8:cafe::17]:4711`, ""},                    // No proto
		{forwarded, `for=192.0.2.43, for=198.51.100.17;proto=https`, ""},    // Multiple params, will be empty.
		{forwarded, `for=172.32.10.15; proto=https;by=127.0.0.1;`, "https"}, // Space before proto

        assertXmlEquals(file("build/distributions/hello-world-1.0.pom").text, """
            <project xmlns="http://maven.apache.org/POM/4.0.0" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <!-- This module was also published with a richer model, Gradle metadata,  -->

}

func getUpdateReaderFromURL(u *url.URL, transport http.RoundTripper, mode string) (io.ReadCloser, error) {
	clnt := &http.Client{
		Transport: transport,
	}
	req, err := http.NewRequest(http.MethodGet, u.String(), nil)
	if err != nil {
		return nil, AdminError{
			Code:       AdminUpdateUnexpectedFailure,
			Message:    err.Error(),
			StatusCode: http.StatusInternalServerError,
		}
	}

Поэтому это три разных источника:

* `http://localhost`
* `https://localhost`
* `http://localhost:8080`

Даже если они все расположены в `localhost`, они используют разные протоколы или порты, а значит, являются разными источниками.

## Шаги { #steps }

        Proxy proxy = Proxy.NO_PROXY;

        CurlRequest result = request.proxy(proxy);

        assertSame(request, result); // Fluent API
        assertSame(proxy, request.proxy());
    }

    @Test
    public void testEncodingMethod() {
        CurlRequest request = new CurlRequest(Method.GET, "https://example.com");

        protocols = new String[] { "http:" };
        values = "http://www.foo.com/\nhttp://www.bar.com/\n http://www.baz.com/";
        assertTrue(UriTypeValidator.check(protocols, values));

        protocols = new String[] { "http:", "https:" };
        values = "https://www.foo.com/";
        assertTrue(UriTypeValidator.check(protocols, values));

        protocols = new String[] { "http:", "https:" };

  social:
  - icon: fontawesome/brands/github-alt
    link: https://github.com/fastapi/fastapi
  - icon: fontawesome/brands/discord
    link: https://discord.gg/VQjSZaeJmf
  - icon: fontawesome/brands/twitter
    link: https://x.com/fastapi
  - icon: fontawesome/brands/linkedin
    link: https://www.linkedin.com/company/fastapi
  - icon: fontawesome/solid/globe
    link: https://tiangolo.com
  alternate:
  - link: /

* `allow_origin_regex` - Une chaîne regex pour faire correspondre les origines autorisées à effectuer des requêtes cross-origin. Par ex. `'https://.*\.example\.org'`.