assertFalse(name, domain.isPublicSuffix());
      assertFalse(name, domain.hasPublicSuffix());
      assertFalse(name, domain.isUnderPublicSuffix());
      assertFalse(name, domain.isTopPrivateDomain());
      assertThat(domain.publicSuffix()).isNull();
    }

    for (String name : NON_PS) {
      InternetDomainName domain = InternetDomainName.from(name);

      assertFalse(name, domain.isPublicSuffix());
      assertFalse(name, domain.hasPublicSuffix());
      assertFalse(name, domain.isUnderPublicSuffix());
      assertFalse(name, domain.isTopPrivateDomain());
      assertThat(domain.publicSuffix()).isNull();
    }

    for (String name : NON_PS) {
      InternetDomainName domain = InternetDomainName.from(name);

    private final ImmutableList<Range<C>> ranges;
    private final DiscreteDomain<C> domain;

    AsSetSerializedForm(ImmutableList<Range<C>> ranges, DiscreteDomain<C> domain) {
      this.ranges = ranges;
      this.domain = domain;
    }

    Object readResolve() {
      return new ImmutableRangeSet<C>(ranges).asSet(domain);
    }
  }

  /**

* **TCP doesn't know about "domains"**. Only about IP addresses.
    * The information about the **specific domain** requested goes in the **HTTP data**.
* The **HTTPS certificates** "certify" a **certain domain**, but the protocol and encryption happen at the TCP level, **before knowing** which domain is being dealt with.
* **By default**, that would mean that you can only have **one HTTPS certificate per IP address**.

        // Test User SID (type 1)
        assertEquals("1Test User", sambaHelper.getAccountId(createMockSID(1, "Test User")));

        // Test Domain Group SID (type 2)
        assertEquals("2Domain Group", sambaHelper.getAccountId(createMockSID(2, "Domain Group")));

        // Test Alias SID (type 4, mapped to 2)
        assertEquals("2Local Group", sambaHelper.getAccountId(createMockSID(4, "Local Group")));

    private final ImmutableList<Range<C>> ranges;
    private final DiscreteDomain<C> domain;

    AsSetSerializedForm(ImmutableList<Range<C>> ranges, DiscreteDomain<C> domain) {
      this.ranges = ranges;
      this.domain = domain;
    }

    Object readResolve() {
      return new ImmutableRangeSet<C>(ranges).asSet(domain);
    }
  }

  /**

    val cookieManager = CookieManager(null, CookiePolicy.ACCEPT_ORIGINAL_SERVER)
    val cookieA = HttpCookie("a", "android")
    cookieA.domain = serverUrl.host
    cookieA.path = "/"
    cookieManager.cookieStore.add(serverUrl.toUri(), cookieA)
    val cookieB = HttpCookie("b", "banana")
    cookieB.domain = serverUrl.host
    cookieB.path = "/"
    cookieManager.cookieStore.add(serverUrl.toUri(), cookieB)
    client =
      client

## Context

Modern best practices when developing a Gradle plugin are to use lazy types (ConfigurableFileCollection, Provider API, domain object containers) when defining configurable parts of a plugin (tasks, extensions, domain objects).  The Provider API provides a consistent way to set conventions, wire related configuration together (extension <- domain object <- task) and avoid evaluation ordering problems.

# Security - First Steps { #security-first-steps }

Let's imagine that you have your **backend** API in some domain.

And you have a **frontend** in another domain or in a different path of the same domain (or in a mobile application).

And you want to have a way for the frontend to authenticate with the backend, using a **username** and **password**.

We can use **OAuth2** to build that with **FastAPI**.

## Origin { #origin }

An origin is the combination of protocol (`http`, `https`), domain (`myapp.com`, `localhost`, `localhost.tiangolo.com`), and port (`80`, `443`, `8080`).

So, all these are different origins:

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