Trait Request 

pub trait Request {
    type Context;

    // Required methods
    fn with_data<T>(
        &self,
        f: impl FnOnce(Scattered<'_, u8>) -> T,
        context: &Self::Context,
    ) -> T;
    fn num_surbs(&self, context: &Self::Context) -> usize;
    fn handling_delay(
        &self,
        message_id: &MessageId,
        context: &Self::Context,
    ) -> Duration;
    fn handle_post_err(self, err: PostErr, context: &Self::Context);
    fn handle_retry_limit_reached(self, context: &Self::Context);
}

Requests managed by a RequestManager must implement this trait.

Required Associated Types

type Context

Opaque context type; a &Context is passed through RequestManager methods to Request methods.

Required Methods

fn with_data<T>( &self, f: impl FnOnce(Scattered<'_, u8>) -> T, context: &Self::Context, ) -> T

Call f with the message data. The same data must be provided every time this is called.

fn num_surbs(&self, context: &Self::Context) -> usize

Returns the number of SURBs that should be sent along with the request. The same number must be returned every time this is called.

fn handling_delay( &self, message_id: &MessageId, context: &Self::Context, ) -> Duration

Returns a conservative estimate of the handling delay. That is, the maximum time it should take for the destination mixnode to process the request and post a reply.

fn handle_post_err(self, err: PostErr, context: &Self::Context)

Called if an unrecoverable error is encountered while posting to the mixnet.

fn handle_retry_limit_reached(self, context: &Self::Context)

Called if we cannot retry posting because the configured limit has been reached.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors