Rust SocketAncillary.truncated用法及代码示例

#![feature(unix_socket_ancillary_data)]
use std::os::unix::net::{UnixStream, SocketAncillary};
use std::io::IoSliceMut;

fn main() -> std::io::Result<()> {
    let sock = UnixStream::connect("/tmp/sock")?;

    let mut ancillary_buffer = [0; 128];
    let mut ancillary = SocketAncillary::new(&mut ancillary_buffer[..]);

    let mut buf = [1; 8];
    let mut bufs = &mut [IoSliceMut::new(&mut buf[..])][..];
    sock.recv_vectored_with_ancillary(bufs, &mut ancillary)?;

    println!("Is truncated: {}", ancillary.truncated());
    Ok(())
}