# IRPCObjectOperations.GetFileDownloadUrl

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Vault API](https://developer.m-files.com/APIs/gRPC-API/vault/index.md) > [Objects, versions, properties and files](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/index.md)

HTML version: https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/GetFileDownloadUrl/

Badges: `Vault API / core` `write` `session or assertion`

Not available over native gRPC: the server answers "Not implemented.". Used by the M-Files HTTP
gateway.

- **Service:** [Objects, versions, properties and files](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/index.md) `MFiles.IRPCObjectOperations`
- **gRPC method:** `/MFiles.IRPCObjectOperations/GetFileDownloadUrl`
- **HTTP (mf-http-grpc):** `POST /grpc/v1/get-file-download-url`
- **Request:** [`GetFileDownloadUrlRequest`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/GetFileDownloadUrl/index.md#request)
- **Response:** [`GetFileDownloadUrlResponse`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/GetFileDownloadUrl/index.md#response)
- **Book and level:** Vault API, core
- **Kind:** write
- **Session:** Required: a session (mfiles-session-id-bin metadata) or a session assertion (x-mf-session-assertion metadata).
- **Idempotent:** no
- **Returns metadata structure version:** no
- **Streaming:** none (unary)

<a id="request"></a>

## Request: GetFileDownloadUrlRequest

> Nested message fields are expanded to depth 3; follow a type link for deeper levels and for the type's own page.

| Field | Type | Description |
|---|---|---|
| `obj_ver` | [`ObjVer`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ObjVer/index.md) | Object version. |
| `obj_ver.obj_id` | [`ObjID`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ObjID/index.md) | The object. |
| `obj_ver.obj_id.type` | `int32` | The object type ID, for example 0 for documents. In a lookup value, the value list ID (for a lookup to objects, the object type ID). |
| `obj_ver.obj_id.item_id` | [`ItemID`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ItemID/index.md) | The ID of the object within its type, in `item_id.internal_id`. |
| `obj_ver.version` | [`ObjVerVersion`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ObjVerVersion/index.md) | The version. Usually `OBJ_VER_VERSION_TYPE_SPECIFIC` with `internal_version`. |
| `obj_ver.version.type` | [`ObjVerVersionType`](https://developer.m-files.com/APIs/gRPC-API/Reference/Enums/MFiles.ObjVerVersionType/index.md) | What `internal_version` means. `OBJ_VER_VERSION_TYPE_SPECIFIC` for a version number. Values: `OBJ_VER_VERSION_TYPE_UNINITIALIZED` (0), `OBJ_VER_VERSION_TYPE_LATEST` (1), `OBJ_VER_VERSION_TYPE_ANY` (2), `OBJ_VER_VERSION_TYPE_ALL` (3), `OBJ_VER_VERSION_TYPE_SPECIFIC` (4), `OBJ_VER_VERSION_TYPE_VALUE_LIST_ITEM` (6), `OBJ_VER_VERSION_TYPE_OBJECT_LEVEL_REFERENCE` (7). |
| `obj_ver.version.internal_version` | `int32` | The version number, starting from 1, when `type` is `OBJ_VER_VERSION_TYPE_SPECIFIC`. The server returns -1 with `OBJ_VER_VERSION_TYPE_LATEST`. |
| `obj_ver.version.external_repository_version` | `string` | Used only for objects in external repositories. Leave empty. |
| `obj_ver.version.external_repository_sort_key` | `int64` | Used only for objects in external repositories. Leave 0. |
| `file_id` | [`FileID`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.FileID/index.md) | File ID. |
| `file_id.type` | [`FileIDType`](https://developer.m-files.com/APIs/gRPC-API/Reference/Enums/MFiles.FileIDType/index.md) | `FILE_IDTYPE_SPECIFIC` for one file. Values: `FILE_IDTYPE_UNINITIALIZED` (0), `FILE_IDTYPE_ALL` (1), `FILE_IDTYPE_ANY` (2), `FILE_IDTYPE_SPECIFIC` (3). |
| `file_id.internal_id` | `int32` | The file ID. |
| `file_id.external_repository_id` | `string` | Used only for files in external repositories. Leave empty. |
| `additional_data[]` | repeated [`NamedValue`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.NamedValue/index.md) | An optional key-value pairs for additional data from the caller. Can be empty. |
| `additional_data[].key` | `string` | The name of the value. |
| `additional_data[].value` | [`TypedValue`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.TypedValue/index.md) | The value as a serialized bytearray. |
| `additional_data[].value.is_null_value` | `bool` | True if the value is empty. `data` is then unset. |
| `additional_data[].value.type` | [`Datatype`](https://developer.m-files.com/APIs/gRPC-API/Reference/Enums/MFiles.Datatype/index.md) | The data type of the value. |
| `additional_data[].value.data` | [`TypedValueUnion`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.TypedValueUnion/index.md) | The value, in the member that matches `type`. Unset for an empty value. |

<a id="response"></a>

## Response: GetFileDownloadUrlResponse

> Nested message fields are expanded to depth 3; follow a type link for deeper levels and for the type's own page.

| Field | Type | Description |
|---|---|---|
| `url` | `string` | URL that can be used to download the file. |

<a id="related"></a>

## Related methods

- [GetFileDownloadUrl2](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/GetFileDownloadUrl2/index.md): Not available over native gRPC: the server answers "Not implemented.". Used by the M-Files HTTP gateway.