Trait tower::make::MakeConnection

pub trait MakeConnection<Target>: Sealed<(Target,)> {
    type Connection: AsyncRead + AsyncWrite;
    type Error;
    type Future: Future<Output = Result<Self::Connection, Self::Error>>;

    fn poll_ready(
        &mut self, 
        cx: &mut Context<'_>
    ) -> Poll<Result<(), Self::Error>>;
    fn make_connection(&mut self, target: Target) -> Self::Future;
}

Available on crate feature make only.

The MakeConnection trait is used to create transports.

The goal of this service is to allow composable methods for creating AsyncRead + AsyncWrite transports. This could mean creating a TLS based connection or using some other method to authenticate the connection.

Required Associated Types

type Connection: AsyncRead + AsyncWrite

The transport provided by this service

type Error

Errors produced by the connecting service

type Future: Future<Output = Result<Self::Connection, Self::Error>>

The future that eventually produces the transport

Required Methods

fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>

Returns Poll::Ready(Ok(())) when it is able to make more connections.

fn make_connection(&mut self, target: Target) -> Self::Future

Connect and return a transport asynchronously

Implementors

impl<C, Target> MakeConnection<Target> for C where
    C: Service<Target>,
    C::Response: AsyncRead + AsyncWrite, 

type Connection = <C as Service<Target>>::Response

type Error = <C as Service<Target>>::Error

type Future = <C as Service<Target>>::Future