In this case, the list would have to include `http://localhost:8080` for the `:8080`-frontend to work correctly.

## Wildcards { #wildcards }

It's also possible to declare the list as `"*"` (a "wildcard") to say that all are allowed.

But that will only allow certain types of communication, excluding everything that involves credentials: Cookies, Authorization headers like those used with Bearer Tokens, etc.

 * actual free allocation units, sectors per allocation unit, and bytes per sector.
 */
public class FileFsFullSizeInformation implements AllocInfo, FileSystemInformation, Decodable {

    private long alloc; // Also handles SmbQueryFSSizeInfo
    private long free;
    private int sectPerAlloc;
    private int bytesPerSect;

    /**
     * Default constructor for decoding file system full size information.
     */

///

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

You can start FastAPI CLI with the *CLI Option* `--forwarded-allow-ips` and pass the IP addresses that should be trusted to read those forwarded headers.

If you set it to `--forwarded-allow-ips="*"` it would trust all the incoming IPs.

    /**
     * Default constructor for SMB allocation information.
     */
    public SmbInfoAllocation() {
        // Default constructor
    }

    private long alloc; // Also handles SmbQueryFSSizeInfo
    private long free;
    private int sectPerAlloc;
    private int bytesPerSect;

    /**
     * {@inheritDoc}
     *

<img src="/img/async/parallel-burgers/parallel-burgers-04.png" class="illustration">

Luego tu cajero/cocinero 👨‍🍳 finalmente regresa con tus hamburguesas, después de mucho tiempo esperando 🕙 allí frente al mostrador.

    static final int SMB_FS_FULL_SIZE_INFORMATION = 1007;

    class SmbInfoAllocation implements AllocInfo {
        long alloc; // Also handles SmbQueryFSSizeInfo
        long free;
        int sectPerAlloc;
        int bytesPerSect;

        @Override
        public long getCapacity() {
            return alloc * sectPerAlloc * bytesPerSect;
        }

        @Override
        public long getFree() {

# Query Parameter Models { #query-parameter-models }

If you have a group of **query parameters** that are related, you can create a **Pydantic model** to declare them.

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

```

Below command enables all incoming traffic to ports ranging from 9000 to 9010.

```sh
ufw allow 9000:9010/tcp
```

### firewall-cmd

For hosts with firewall-cmd enabled (CentOS), you can use `firewall-cmd` command to allow traffic to specific ports. Use below commands to allow access to port 9000

```sh
firewall-cmd --get-active-zones
```

```

Da er nicht verschlüsselt ist, kann jeder die Informationen aus dem Inhalt wiederherstellen.

Aber er ist signiert. Wenn Sie also einen von Ihnen gesendeten Token zurückerhalten, können Sie überprüfen, ob Sie ihn tatsächlich gesendet haben.

The query parameter `q` is of type `str | None`, that means that it's of type `str` but could also be `None`, and indeed, the default value is `None`, so FastAPI will know it's not required.

/// note

FastAPI will know that the value of `q` is not required because of the default value `= None`.

Having `str | None` will allow your editor to give you better support and detect errors.

///