Struct None

#[non_exhaustive]
pub struct None;

Body type for responses that forbid payloads.

This is distinct from an “empty” response which would contain a Content-Length header. For an “empty” body, use () or Bytes::new().

For example, the HTTP spec forbids a payload to be sent with a 204 No Content response. In this case, the payload (or lack thereof) is implicit from the status code, so a Content-Length header is not required.

Implementations

impl None

pub fn new() -> Self

Constructs new “none” body.

Trait Implementations

impl Clone for None

fn clone(&self) -> None

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for None

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

Formats the value using the given formatter.

impl Default for None

fn default() -> None

Returns the “default value” for a type.

impl MessageBody for None

type Error = Infallible

The type of error that will be returned if streaming body fails.

fn size(&self) -> BodySize

Body size hint.

fn poll_next( self: Pin<&mut Self>, _cx: &mut Context<'_>, ) -> Poll<Option<Result<Bytes, Self::Error>>>

Attempt to pull out the next chunk of body bytes.

fn try_into_bytes(self) -> Result<Bytes, Self>

Try to convert into the complete chunk of body bytes.

fn boxed(self) -> BoxBody

where Self: Sized + 'static,

Wraps this body into a BoxBody.

impl Copy for None