59 lines
1.7 KiB
Markdown
59 lines
1.7 KiB
Markdown
---
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title: initConnection
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description: Initializes connection and save information on the user's device and application.
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image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
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---
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# Method: initConnection
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[Back to methods index](index.md)
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Initializes connection and save information on the user's device and application.
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### Parameters:
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| Name | Type | Description | Required |
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|----------|---------------|-------------|----------|
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|api\_id|[int](../types/int.md) | Application identifier | Yes|
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|device\_model|[string](../types/string.md) | Device model | Yes|
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|system\_version|[string](../types/string.md) | System version | Yes|
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|app\_version|[string](../types/string.md) | App version | Yes|
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|lang\_code|[string](../types/string.md) | Language code to set | Yes|
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|query|[!X](../types/!X.md) | Nested query | Yes|
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### Return type: [X](../types/X.md)
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### Can bots use this method: **YES**
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### MadelineProto Example:
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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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define('MADELINE_BRANCH', '');
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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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$X = $MadelineProto->initConnection(['api_id' => int, 'device_model' => 'string', 'system_version' => 'string', 'app_version' => 'string', 'lang_code' => 'string', 'query' => !X, ]);
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```
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Or, if you're into Lua:
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```lua
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X = initConnection({api_id=int, device_model='string', system_version='string', app_version='string', lang_code='string', query=!X, })
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```
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### Errors this method can return:
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| Error | Description |
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|----------|---------------|
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|CONNECTION_LAYER_INVALID|Layer invalid|
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|INPUT_FETCH_FAIL|Failed deserializing TL payload|
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