Trait HandlerResult 

pub trait HandlerResult {
    type Error;

    // Required method
    fn send(self) -> Result<(), Self::Error>;
}

Trait for supporting more flexible return types for the handler passed to Serve::run.

The types that this is implemented for by default are:

• Response, for a handler that always generates a response.
• (), for a handler that has already called either Response::send_to_client or Response::stream_to_client.
• Result<(), E>, for a handler that has already called either Response::send_to_client or Response::stream_to_client, but might fail with an error of type E along the way.
• Result<Response, E>, for a handle the might generate a response to send or an error.

For the Result implementations, a return value containing an error will attempt to send a 500 response status with a body containing the ToString::to_string representation of the error, in the same way that fastly::main does.

Required Associated Types

type Error

The error type generated by the handler.

Required Methods

fn send(self) -> Result<(), Self::Error>

Perform any remaining work to send this response downstream.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl HandlerResult for ()

type Error = !

fn send(self) -> Result<(), Self::Error>

impl<E> HandlerResult for Result<(), E>

where E: Display,

type Error = E

fn send(self) -> Result<(), Self::Error>

impl<E> HandlerResult for Result<PendingRequest, E>

where E: Display,

type Error = E

fn send(self) -> Result<(), Self::Error>

impl<E> HandlerResult for Result<Response, E>

where E: Display,

type Error = E

fn send(self) -> Result<(), Self::Error>

Implementors

impl HandlerResult for PendingRequest

type Error = !

impl HandlerResult for Response

type Error = !