# Download File

### Overview

The **Download File Component** retrieves a file from a remote FTP or SFTP server and saves it locally, allowing seamless file transfer automation.

### Usage

This component connects to an FTP/SFTP server, downloads a specified file, and provides metadata upon successful retrieval.

#### Input Ports

| Port | Description                              |
| ---- | ---------------------------------------- |
| `in` | Receives the file path to be downloaded. |

#### Output Ports

| Port       | Description                                                                                      |
| ---------- | ------------------------------------------------------------------------------------------------ |
| `out`      | Emits the downloaded file's metadata including file ID, filename, checksum (MD5), and file size. |
| `notFound` | Emits an error if the file is not found or if access is denied.                                  |

#### Properties

| Property | Type     | Description                                 |
| -------- | -------- | ------------------------------------------- |
| `path`   | `string` | The full remote file path to be downloaded. |

#### Processing Logic

1. **Establishes FTP/SFTP Connection**: Connects to the remote server using provided authentication.
2. **Initiates File Download**:
   * Retrieves the specified file using the given `path`.
   * Streams the file content for local storage.
3. **Handles Success & Errors**:
   * If successful, outputs file metadata to the `out` port.
   * If the file is missing or access is denied, sends an error message to `notFound`.
4. **Closes Connection**: Ensures the connection is terminated after execution.

#### Output Data Schema

| Property                  | Type     | Description                                   |
| ------------------------- | -------- | --------------------------------------------- |
| `fileId`                  | `string` | Unique identifier of the downloaded file.     |
| `filename`                | `string` | Name of the downloaded file.                  |
| `md5`                     | `string` | MD5 checksum of the file to ensure integrity. |
| `length`                  | `number` | Size of the file in bytes.                    |
| `path` (if error)         | `string` | The requested file path if not found.         |
| `errorCode` (if error)    | `string` | The FTP/SFTP error code.                      |
| `errorMessage` (if error) | `string` | Description of the error encountered.         |

### Notes

* **Supports FTP & SFTP**: Works with both FTP and secure FTP (SFTP) connections.
* **Error Handling**: Detects missing files and permission errors, sending appropriate error messages.
* **Efficient File Transfer**: Uses streaming for optimized file downloads.

This component is ideal for workflows requiring automated file retrieval from remote servers.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.appmixer.com/connector-configuration/utils/ftp/download-file.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.