assertEquals("http://127.0.0.1:8080/path", IpAddressUtil.buildUrl("http", ipv4, 8080, "path"));

        // IPv4 with port, no path
        assertEquals("http://127.0.0.1:8080", IpAddressUtil.buildUrl("http", ipv4, 8080, ""));
        assertEquals("http://127.0.0.1:8080", IpAddressUtil.buildUrl("http", ipv4, 8080, null));

        // IPv4 without port

Geri kalanı ise **FastAPI** tarafından işlenecektir.

Eğer uygulamanızı çalıştırıp [http://localhost:8000/v1/](http://localhost:8000/v1/) adresine giderseniz, Flask'tan gelen response'u göreceksiniz:

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

Ve eğer [http://localhost:8000/v2](http://localhost:8000/v2) adresine giderseniz, FastAPI'den gelen response'u göreceksiniz:

```JSON
{
    "message": "Hello World"
}

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

If you run it and go to [http://localhost:8000/v1/](http://localhost:8000/v1/) you will see the response from Flask:

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

And if you go to [http://localhost:8000/v2](http://localhost:8000/v2) you will see the response from FastAPI:

```JSON
{
    "message": "Hello World"
}

///

## 試試看 { #check-it }

現在，位於路徑 `/v1/` 底下的所有請求都會由 Flask 應用處理。

其餘則由 **FastAPI** 處理。

如果你啟動它並前往 [http://localhost:8000/v1/](http://localhost:8000/v1/)，你會看到來自 Flask 的回應：

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

如果你前往 [http://localhost:8000/v2](http://localhost:8000/v2)，你會看到來自 FastAPI 的回應：

```JSON
{
    "message": "Hello World"
}

///

## 检查 { #check-it }

现在，所有定义在 `/v1/` 路径下的请求将会被 Flask 应用处理。

其余的请求则会被 **FastAPI** 处理。

如果你运行它并访问 [http://localhost:8000/v1/](http://localhost:8000/v1/)，你将会看到由 Flask 返回的响应：

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

如果你访问 [http://localhost:8000/v2](http://localhost:8000/v2)，你将会看到由 FastAPI 返回的响应：

```JSON
{
    "message": "Hello World"
}

        url = "http://www.foo.com:8080/";
        result = "http://www.foo.com:8080/";
        assertEquals(result, duplicateHostHelper.convert(url));

        url = "http://www.bar.com/";
        result = "http://www.bar.com/";
        assertEquals(result, duplicateHostHelper.convert(url));

        url = "http://www.bar.com:8080/";
        result = "http://www.bar.com:8080/";

Чтобы это работало, у бэкенда на `:80` должен быть список "разрешённых источников" ("allowed origins").

В таком случае этот список должен содержать `http://localhost:8080`, чтобы фронтенд на `:8080` работал корректно.

## Подстановочный символ "*" { #wildcards }

Bunu sağlayabilmek için `:80`-backend’in bir "allowed origins" listesi olmalıdır.

Bu örnekte `:8080`-frontend’in doğru çalışması için listede `http://localhost:8080` bulunmalıdır.

## Wildcard'lar { #wildcards }

А решта - **FastAPI**.

Якщо ви запустите це й перейдете на [http://localhost:8000/v1/](http://localhost:8000/v1/), ви побачите відповідь від Flask:

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

А якщо ви перейдете на [http://localhost:8000/v2](http://localhost:8000/v2), ви побачите відповідь від FastAPI:

```JSON
{
    "message": "Hello World"
}

### Browser UI

- Search UI: http://localhost:8080/

![Search UI](https://fess.codelibs.org/_images/fess_search_result1.png)

- Admin UI: http://localhost:8080/admin/ (default username/password is admin/admin)

![Admin UI](https://fess.codelibs.org/_images/fess_admin_dashboard.png)