Enum DownloadError

pub enum DownloadError {
    Network(Arc<Error>),
    Io(Arc<Error>),
}

An error caused by downloading a file.

Variants

Network(Arc<Error>)

A network error while downloading a file from Telegram.

Io(Arc<Error>)

An I/O error while writing a file to destination.

Trait Implementations

impl Clone for DownloadError

fn clone(&self) -> DownloadError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DownloadError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for DownloadError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for DownloadError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Arc<Error>> for DownloadError

fn from(source: Arc<Error>) -> Self

Converts to this type from the input type.

impl From<DownloadError> for RequestError

This impl allows to use ? to propagate DownloadErrors in function returning RequestErrors. For example:

async fn handler() -> Result<(), RequestError> {
    download_file().await?; // `?` just works

    Ok(())
}

async fn download_file() -> Result<(), DownloadError> {
    /* download file here */
    Ok(())
}

fn from(download_err: DownloadError) -> Self

Converts to this type from the input type.

impl From<Error> for DownloadError

fn from(error: Error) -> Self

Converts to this type from the input type.