assertEquals("http://localhost/home#section1", HcHttpClient.constructRedirectLocation("http://localhost/", "/home#section1"));
        assertEquals("http://localhost/newpage", HcHttpClient.constructRedirectLocation("http://localhost", "newpage"));
        assertEquals("http://localhost/newpage", HcHttpClient.constructRedirectLocation("http://localhost/path/", "../newpage"));

		{"", "", false, errors.New("unable to process empty address")},
		{":9000", ":9000", true, nil},
		{"localhost:9000", ":9000", true, nil},
		{"localhost:9000", "http://localhost:9000", true, nil},
		{"http://localhost:9000", ":9000", true, nil},
		{"http://localhost:9000", "http://localhost:9000", true, nil},
		{"http://8.8.8.8:9000", "http://localhost:9000", false, nil},
	}

	for _, testCase := range testCases {

		{[]string{"http://localhost:9000/d1", "http://localhost:9001/d2", "http://localhost:9002/d3", "http://localhost:9003/d4"}, []string{"localhost:9000", "localhost:9001", "localhost:9002", "localhost:9003"}, "localhost:9000"},
	}

	}{
		// Invalid inputs
		{"https://localhost:2379,http://localhost:2380", nil, false, false},
		{",,,", nil, false, false},
		{"", nil, false, false},
		{"ftp://localhost:2379", nil, false, false},
		{"http://localhost:2379000", nil, false, false},

		// Valid inputs
		{
			"https://localhost:2379,https://localhost:2380",
			[]string{
				"https://localhost:2379", "https://localhost:2380",
			},
			true, true,
		},

## Источник { #origin }

Источник — это совокупность протокола (`http`, `https`), домена (`myapp.com`, `localhost`, `localhost.tiangolo.com`) и порта (`80`, `443`, `8080`).

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 }

    @DisplayName("Should get InetAddress property with default value")
    void testGetInetAddressWithDefault() throws UnknownHostException {
        InetAddress localhost = InetAddress.getByName("localhost");
        InetAddress defaultAddress = InetAddress.getByName("127.0.0.1");
        assertEquals(localhost, Config.getInetAddress(testProperties, "test.host", null));

from inline_snapshot import snapshot

app = FastAPI(
    servers=[
        {"url": "/", "description": "Default, relative server"},
        {
            "url": "http://staging.localhost.tiangolo.com:8000",
            "description": "Staging but actually localhost still",
        },
        {"url": "https://prod.example.com"},
    ]
)


@app.get("/foo")
def foo():
    return {"message": "Hello World"}

var DB *gorm.DB
var (
	mysqlDSN     = "gorm:gorm@tcp(localhost:9910)/gorm?charset=utf8&parseTime=True&loc=Local"
	postgresDSN  = "user=gorm password=gorm dbname=gorm host=localhost port=9920 sslmode=disable TimeZone=Asia/Shanghai"
	gaussdbDSN   = "user=gaussdb password=Gaussdb@123 dbname=gorm host=localhost port=9950 sslmode=disable TimeZone=Asia/Shanghai"
	sqlserverDSN = "sqlserver://sa:LoremIpsum86@localhost:9930?database=master"

	// addresses. I.e, 0.0.0.0:9000 like ":9000" refers to port
	// 9000 on localhost.
	if host.Name != "" && host.Name != net.IPv4zero.String() && host.Name != net.IPv6zero.String() {
		localHost, err := isLocalHost(host.Name, host.Port.String(), host.Port.String())
		if err != nil {
			return err
		}
		if !localHost {
			return config.ErrInvalidAddressFlag(nil).Msg("host in server address should be this server")
		}

And the rest will be handled by **FastAPI**.

If you run it and go to <a href="http://localhost:8000/v1/" class="external-link" target="_blank">http://localhost:8000/v1/</a> you will see the response from Flask:

```txt
Hello, World from Flask!
```

And if you go to <a href="http://localhost:8000/v2" class="external-link" target="_blank">http://localhost:8000/v2</a> you will see the response from FastAPI:

```JSON
{