据说这里唯一的方法是使用libc：
extern crate libc;
extern crate native;
use libc::{c_int, c_void, socket, AF_INET, sockaddr_storage};
use native::io::net::sockaddr_to_addr;
use std::io::net::ip::SocketAddr;
static SOCK_RAW: c_int = 3;
static IPPROTO_ICMP: c_int = 1;
fn recvfrom<'buf>(sock: c_int, buf: &'buf mut [u8]) -> (&'buf mut [u8], SocketAddr) {
let mut storage: sockaddr_storage = unsafe { std::mem::init() };
let storagep = &mut storage as *mut _ as *mut libc::sockaddr;
let mut addrlen = std::mem::size_of::<libc::sockaddr_storage>() as libc::socklen_t;
let bytes = unsafe { libc::recvfrom(sock,
buf.as_mut_ptr() as *mut c_void,
buf.len() as u64,
0, storagep, &mut addrlen) };
(buf.mut_slice_to(bytes as uint),
sockaddr_to_addr(&storage, addrlen as uint).unwrap())
}
fn main() {
let handle = unsafe { socket(AF_INET, SOCK_RAW, IPPROTO_ICMP) };
println!("{}", handle);
let mut bufferator = [0, ..2048];
loop {
let (buf, from) = recvfrom(handle, bufferator.as_mut_slice());
println!("from {}, data:\n{}", from, buf);
}
}
但这是一年前写的，所以事情可能会改变吗？
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我来说两句