# help.getCdnConfig

Get configuration for [CDN](https://core.telegram.org/cdn) file downloads.

## Example

{% tabs %}
{% tab title="Javascript" %}

```javascript
const {Api, TelegramClient} = require('telegram');
const {StringSession} = require('telegram/sessions');

const session = new StringSession('');
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
    const result = await client.invoke(new Api.help.getCdnConfig({
        401: new Api.AUTH_KEY_PERM_EMPTY({...}),
        }));
    console.log(result); // prints the result
})();
```

{% endtab %}

{% tab title="TypeScript" %}

```typescript
import {Api, TelegramClient} from 'telegram';
import {StringSession} from 'telegram/sessions';

const session = new StringSession('');
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
    const result: Api.CdnConfig = await client.invoke(new Api.help.getCdnConfig({
        401: new Api.AUTH_KEY_PERM_EMPTY({...}),
        }));
    console.log(result); // prints the result
})();
```

{% endtab %}
{% endtabs %}

## TL schema

```
cdnConfig#5725e40a public_keys:Vector<CdnPublicKey> = CdnConfig;
---functions---
help.getCdnConfig#52029342 = CdnConfig;
```

## Parameters

| Name | Type                   | Description                                                                           |
| :--: | ---------------------- | ------------------------------------------------------------------------------------- |
|  401 | AUTH\_KEY\_PERM\_EMPTY | The temporary auth key must be binded to the permanent auth key to use these methods. |

## Result

[CdnConfig](https://core.telegram.org/type/CdnConfig)

## Possible errors

| Code | Type | Description |
| :--: | ---- | ----------- |

## Can bots use this methd ?

### yes

## Related pages

### [Encrypted CDNs for Speed and Security](https://core.telegram.org/cdn)