Trait SocketGetOption 

pub trait SocketGetOption<O: SocketOption>: SocketOperation {
    // Required method
    fn socket_get_option(
        &self,
        socket: &Self::Socket,
        option: O,
        cancellation: &Cancellation,
    ) -> impl Future<Output = OperationResult<O::Value>> + Send;
}

Read a typed socket option. See SocketOptions for the shared option contract; the opposite operation is not required.

A getter-only adapter needs neither a setter nor any core socket operations:

use base_scheduler::{Cancellation, OperationResult, SocketGetOption, SocketOperation, SocketOption};
struct Inspector<S>(S);
impl<S: SocketOperation> SocketOperation for Inspector<S> {
    type Socket = S::Socket;
}
impl<S: SocketGetOption<O>, O: SocketOption> SocketGetOption<O> for Inspector<S> {
    async fn socket_get_option(&self, socket: &Self::Socket, option: O, cancellation: &Cancellation) -> OperationResult<O::Value> {
        self.0.socket_get_option(socket, option, cancellation).await
    }
}

Reading an option does not grant permission to set it:

use base_scheduler::{Cancellation, SocketGetOption, SocketSetOption, TcpNoDelay};
async fn configure<S: SocketGetOption<TcpNoDelay>>(scheduler: &S, socket: &S::Socket) {
    scheduler.socket_set_option(socket, TcpNoDelay, true, &Cancellation::never()).await;
}

Required Methods

fn socket_get_option( &self, socket: &Self::Socket, option: O, cancellation: &Cancellation, ) -> impl Future<Output = OperationResult<O::Value>> + Send

Query the option’s current value, preserving OS errors.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors