Trait optee_utee::net::StdCompatRead

pub trait StdCompatRead {
    // Required method
    fn read(&mut self, buf: &mut [u8]) -> Result<usize, SocketError>;

    // Provided method
    fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), SocketError> { ... }
}

A trait used for convenience; import it so that the code remains consistent with the std version (with the only difference being the return error type).

Take TcpStream as example:

use optee_utee::net::{TcpStream, SocketError};

fn read_without_compact_trait(stream: &mut TcpStream, mut buf: &mut [u8]) -> Result<(), SocketError> {
    use optee_utee::ErrorKind;

    while !buf.is_empty() {
        match stream.recv(buf) {
            Ok(0) => break,
            Ok(n) => buf = &mut buf[n..],
            Err(e) => return Err(e),
        }
    }
    if !buf.is_empty() {
        return Err(SocketError::Tee(ErrorKind::Generic));
    }
    Ok(())
}

fn read_with_compact_trait(stream: &mut TcpStream, buf: &mut [u8]) -> Result<(), SocketError> {
    use optee_utee::net::StdCompatRead;

    stream.read_exact(buf)
}

Required Methods

fn read(&mut self, buf: &mut [u8]) -> Result<usize, SocketError>

Provided Methods

fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), SocketError>

Implementors

impl<T: SocketAdapter<Setup = Setup>> StdCompatRead for Socket<T>