generalize impl Responder for HttpResponse

src/response/customize_responder.rs

@@ -1,12 +1,9 @@
 use actix_http::{
-    body::{EitherBody, MessageBody},
+    body::EitherBody, error::HttpError, header::HeaderMap, header::TryIntoHeaderPair,
-    error::HttpError,
-    header::HeaderMap,
-    header::TryIntoHeaderPair,
     StatusCode,
 };
 
-use crate::{BoxError, HttpRequest, HttpResponse, Responder};
+use crate::{HttpRequest, HttpResponse, Responder};
 
 /// Allows overriding status code and headers for a [`Responder`].
 ///
@@ -143,7 +140,6 @@ impl<R: Responder> CustomizeResponder<R> {
 impl<T> Responder for CustomizeResponder<T>
 where
     T: Responder,
-    <T::Body as MessageBody>::Error: Into<BoxError>,
 {
     type Body = EitherBody<T::Body>;
 

src/response/responder.rs

@@ -7,7 +7,7 @@ use actix_http::{
 };
 use bytes::{Bytes, BytesMut};
 
-use crate::{BoxError, Error, HttpRequest, HttpResponse, HttpResponseBuilder};
+use crate::{Error, HttpRequest, HttpResponse, HttpResponseBuilder};
 
 use super::CustomizeResponder;
 
@@ -57,8 +57,11 @@ pub trait Responder {
     }
 }
 
-impl Responder for HttpResponse {
+impl<B> Responder for HttpResponse<B>
-    type Body = BoxBody;
+where
+    B: MessageBody + 'static,
+{
+    type Body = B;
 
     #[inline]
     fn respond_to(self, _: &HttpRequest) -> HttpResponse<Self::Body> {
@@ -96,7 +99,6 @@ impl Responder for actix_http::ResponseBuilder {
 impl<T> Responder for Option<T>
 where
     T: Responder,
-    <T::Body as MessageBody>::Error: Into<BoxError>,
 {
     type Body = EitherBody<T::Body>;
 
@@ -111,7 +113,6 @@ where
 impl<T, E> Responder for Result<T, E>
 where
     T: Responder,
-    <T::Body as MessageBody>::Error: Into<BoxError>,
     E: Into<Error>,
 {
     type Body = EitherBody<T::Body>;