Trait IoHandler

pub trait IoHandler: Send {
    // Required method
    fn io<'async_trait>(
        self: Pin<Box<Self>>,
        io: IoStream,
    ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
       where Self: 'async_trait;
}

An upgraded connection I/O handler.

An I/O handler performs raw I/O via the passed in IoStream, which is AsyncRead, AsyncWrite, and Unpin.

Example

The example below implements an EchoHandler that echos the raw bytes back to the client.

use std::pin::Pin;

use rocket::tokio::io;
use rocket::data::{IoHandler, IoStream};

struct EchoHandler;

#[rocket::async_trait]
impl IoHandler for EchoHandler {
    async fn io(self: Pin<Box<Self>>, io: IoStream) -> io::Result<()> {
        let (mut reader, mut writer) = io::split(io);
        io::copy(&mut reader, &mut writer).await?;
        Ok(())
    }
}

Required Methods

fn io<'async_trait>( self: Pin<Box<Self>>, io: IoStream, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

where Self: 'async_trait,

Performs the raw I/O.

Implementors