56 lines
1.6 KiB
Markdown
56 lines
1.6 KiB
Markdown
---
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title: upload.getCdnFileHashes
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description: Get SHA256 hashes for verifying downloaded [CDN](https://core.telegram.org/cdn) files
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image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
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redirect_from: /API_docs/methods/upload_getCdnFileHashes.html
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---
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# Method: upload.getCdnFileHashes
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[Back to methods index](index.md)
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Get SHA256 hashes for verifying downloaded [CDN](https://core.telegram.org/cdn) files
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### Parameters:
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| Name | Type | Description | Required |
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|----------|---------------|-------------|----------|
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|file\_token|[bytes](../types/bytes.md) | File | Yes|
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|offset|[int](../types/int.md) | Offset from which to start getting hashes | Yes|
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### Return type: [Vector\_of\_CdnFileHash](../types/CdnFileHash.md)
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### Can bots use this method: **YES**
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### MadelineProto Example ([now async for huge speed and parallelism!](https://docs.madelineproto.xyz/docs/ASYNC.html)):
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```php
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if (!file_exists('madeline.php')) {
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copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
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}
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include 'madeline.php';
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$MadelineProto = new \danog\MadelineProto\API('session.madeline');
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$MadelineProto->start();
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$Vector_of_CdnFileHash = $MadelineProto->upload->getCdnFileHashes(['file_token' => 'bytes', 'offset' => int, ]);
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```
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Or, if you're into Lua:
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```lua
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Vector_of_CdnFileHash = upload.getCdnFileHashes({file_token='bytes', offset=int, })
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```
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### Errors
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| Code | Type | Description |
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|------|----------|---------------|
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|400|CDN_METHOD_INVALID|You can't call this method in a CDN DC|
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|400|RSA_DECRYPT_FAILED|Internal RSA decryption failed|
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