Trait tower_web::response::Response

pub trait Response {
    type Buf: Buf;
    type Body: BufStream<Item = Self::Buf, Error = Error>;
    fn into_http<S: Serializer>(
        self, 
        context: &Context<S>
    ) -> Result<Response<Self::Body>, Error>;
}

Types that can be returned from resources as responses to HTTP requests.

Implementations of Response are responsible for encoding the value using the appropriate content type. The content type may be specific to the type in question, for example serde_json::Value implies a content type of application/json.

Alternatively, the provided context may be used to encode the response in most suitable content-type based on the request context. The content-type is picked using the following factors:

• The HTTP request's Accept header value (not yet implemented).
• Any content type specified by the resource using annotations.
• Serialization formats that the application made available to the resource.

Implementations of Response are able to asynchronously stream the response body if needed. This is done by setting the HTTP response body to a BufStream type that supports streaming.

Associated Types

type Buf: Buf

Data chunk type.

type Body: BufStream<Item = Self::Buf, Error = Error>

The HTTP response body type.

Required Methods

fn into_http<S: Serializer>(
    self,
    context: &Context<S>
) -> Result<Response<Self::Body>, Error>

Convert the value into a response future

Implementations on Foreign Types

impl<A, B> Response for Either<A, B> where     A: Response,     B: Response,

type Buf = <Self::Body as BufStream>::Item

type Body = Either2<<A as Response>::Body, <B as Response>::Body>

fn into_http<S: Serializer>(     self,     context: &Context<S> ) -> Result<Response<Self::Body>, Error>

impl Response for File

type Buf = Cursor<BytesMut>

type Body = Map<Self>

fn into_http<S: Serializer>(     self,     context: &Context<S> ) -> Result<Response<Self::Body>, Error>

impl Response for Value

type Buf = <Self::Body as BufStream>::Item

type Body = Map<Bytes>

fn into_http<S>(     self,     context: &Context<S> ) -> Result<Response<Self::Body>, Error> where     S: Serializer,

impl<T> Response for Response<T> where     T: BufStream,

type Buf = T::Item

type Body = Map<T>

fn into_http<S: Serializer>(     self,     _: &Context<S> ) -> Result<Response<Self::Body>, Error>

impl Response for String

type Buf = Cursor<Vec<u8>>

type Body = Map<String>

fn into_http<S: Serializer>(     self,     context: &Context<S> ) -> Result<Response<Self::Body>, Error>

impl Response for &'static str

type Buf = Cursor<&'static [u8]>

type Body = Map<&'static str>

fn into_http<S: Serializer>(     self,     context: &Context<S> ) -> Result<Response<Self::Body>, Error>

Implementors

• impl<T> Response for SerdeResponse<T> where     T: Serialize,  type Buf = <Self::Body as BufStream>::Item; type Body = Map<Bytes>;