#[non_exhaustive]pub struct None;
Expand description
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§
Trait Implementations§
source§impl MessageBody for None
impl MessageBody for None
§type Error = Infallible
type Error = Infallible
The type of error that will be returned if streaming body fails. Read more
source§fn poll_next(
self: Pin<&mut None>,
_cx: &mut Context<'_>,
) -> Poll<Option<Result<Bytes, <None as MessageBody>::Error>>>
fn poll_next( self: Pin<&mut None>, _cx: &mut Context<'_>, ) -> Poll<Option<Result<Bytes, <None as MessageBody>::Error>>>
Attempt to pull out the next chunk of body bytes. Read more
impl Copy for None
Auto Trait Implementations§
impl Freeze for None
impl RefUnwindSafe for None
impl Send for None
impl Sync for None
impl Unpin for None
impl UnwindSafe for None
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Copy,
impl<T> CloneToUninit for Twhere
T: Copy,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)