GetDownloadInfo

# GetDownloadInfo API

Returns download metadata for the latest version of a document — file size, MIME content type, modification date, suggested download file name, and CRC32 checksum — without staging the file on the server or creating a download handler. Use this API when you need to inspect a document's download properties before deciding whether to download it, or when you only need file metadata rather than the file content itself.

To download the actual file content, use GetDownloadHandler (chunked) or DownloadDocument (single call). To query metadata for a specific version, use GetDownloadInfoByVersion.

Endpoint¶

/srv.asmx/GetDownloadInfo

Methods¶

GET /srv.asmx/GetDownloadInfo?AuthenticationTicket=...&Path=...
POST /srv.asmx/GetDownloadInfo (form data)
SOAP Action: http://tempuri.org/GetDownloadInfo

Parameters¶

Parameter	Type	Required	Description
`AuthenticationTicket`	string	Yes	Authentication ticket obtained from `AuthenticateUser`.
`Path`	string	Yes	Full infoRouter path to the document (e.g. `/Finance/Reports/Q1-Report.pdf`), or a short document ID path (`~D{id}` or `~D{id}.ext`).

Response¶

Success Response¶

Returns file metadata for the latest version. No temporary file is created on the server and no handler GUID is issued.

<response success="true"
          Size="2097152"
          ContentType="application/pdf"
          ModificationDate="2024-06-15"
          VersionNumber="0"
          AlterDocumentName="Q1-Report.pdf"
          RenderedContent="false"
          CRC32="a3f1c29d" />

Response Attributes¶

Attribute	Description
`success`	`true` if the metadata was retrieved successfully.
`Size`	Total file size of the latest version in bytes.
`ContentType`	MIME type of the document (e.g. `application/pdf`, `application/vnd.openxmlformats-officedocument.wordprocessingml.document`).
`ModificationDate`	Last modification date of the latest document version in `yyyy-MM-dd` format.
`VersionNumber`	Always `0` for this API, indicating the latest version. Use `GetDownloadInfoByVersion` to query a specific version.
`AlterDocumentName`	The file name to use when saving a downloaded copy on the client side.
`RenderedContent`	`true` if the file would be served as a server-rendered temporary representation (e.g. a converted format); `false` if the original stored file would be served.
`CRC32`	CRC32 checksum of the file for integrity verification. Empty string when `RenderedContent` is `true`.

Note: Unlike GetDownloadHandler, this response never contains ChunkSize or downloadhandler attributes because no file is staged and no handler is created.

Error Response¶

<response success="false" error="[901] Session expired or Invalid ticket" />

Required Permissions¶

The calling user must have at least read access to the document. Offline (archived) documents cannot be queried and return an error.

Example¶

GET Request¶

GET /srv.asmx/GetDownloadInfo
  ?AuthenticationTicket=3f2504e0-4f89-11d3-9a0c-0305e82c3301
  &Path=/Finance/Reports/Q1-Report.pdf
HTTP/1.1

GET Request (short ID path)¶

GET /srv.asmx/GetDownloadInfo
  ?AuthenticationTicket=3f2504e0-4f89-11d3-9a0c-0305e82c3301
  &Path=~D1051
HTTP/1.1

POST Request¶

POST /srv.asmx/GetDownloadInfo HTTP/1.1
Content-Type: application/x-www-form-urlencoded

AuthenticationTicket=3f2504e0-4f89-11d3-9a0c-0305e82c3301&Path=/Finance/Reports/Q1-Report.pdf

SOAP Request¶

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
               xmlns:tns="http://tempuri.org/">
  <soap:Body>
    <tns:GetDownloadInfo>
      <tns:AuthenticationTicket>3f2504e0-4f89-11d3-9a0c-0305e82c3301</tns:AuthenticationTicket>
      <tns:Path>/Finance/Reports/Q1-Report.pdf</tns:Path>
    </tns:GetDownloadInfo>
  </soap:Body>
</soap:Envelope>

Notes¶

This API is a metadata-only call. No file is read from disk, no temporary file is created on the server, and no download handler GUID is issued. It is significantly cheaper than GetDownloadHandler for inspecting file properties.
VersionNumber is always 0 in the response, indicating the latest version was queried. To query metadata for a specific version use GetDownloadInfoByVersion.
Both full infoRouter paths and short document ID paths (~D{id} or ~D{id}.ext) are accepted for the Path parameter.
Offline (archived) documents cannot be queried and will return an error response.
When RenderedContent is true, the CRC32 attribute will be an empty string because the checksum applies to the original stored file, not the rendered output.
Use Size to pre-calculate download progress bars or to determine whether chunked downloading is necessary before calling GetDownloadHandler.

GetDownloadInfoByVersion - Get download metadata for a specific version of a document
GetDownloadHandler - Stage the latest version and return a download handler GUID for chunked retrieval
GetDownloadHandlerByVersion - Stage a specific version and return a download handler GUID for chunked retrieval
DownloadDocument - Download the latest version as a raw byte array in a single call
GetDocument - Get the full metadata properties of a document

Error Codes¶

Error	Description
`[900] Authentication failed`	Invalid or missing authentication ticket.
`[901] Session expired or Invalid ticket`	The ticket has expired or does not exist.
Document not found	The specified `Path` does not resolve to an existing document.
Offline document error	The document is in an archived/offline library and cannot be queried.
`SystemError:...`	An unexpected server-side error occurred.

For detailed documentation visit: https://support.inforouter.com/api-docs/GetDownloadInfo