Type Alias BoxBody 

pub type BoxBody = UnsyncBoxBody<Bytes, Error>;

Available on crate feature http only.

A type-erased HTTP body.

This is a convenience alias for http_body_util::combinators::UnsyncBoxBody carrying bytes::Bytes data and anyhow::Error errors.

It is useful when a handler produces different concrete body types on different code paths, for example, a streaming body on one branch and an EmptyBody on another. Because those bodies have different types, they cannot be returned from the same match or if directly. Erasing each one to a BoxBody with box_body gives every branch the single, shared type Response<BoxBody>.

Examples

use spin_sdk::http::{box_body, BoxBody, EmptyBody, FullBody, Response};

let response: Response<BoxBody> = if found() {
    Response::new(box_body(FullBody::new(bytes::Bytes::from("hello"))))
} else {
    Response::builder()
        .status(404)
        .body(box_body(EmptyBody::new()))
        .unwrap()
};

Aliased Type

pub struct BoxBody { /* private fields */ }