Source code
Revision control
Copy as Markdown
Other Tools
use std::io;
use std::mem;
use std::net::{self, SocketAddr};
#[cfg(not(target_os = "hermit"))]
use std::os::fd::{AsRawFd, FromRawFd};
// can use `std::os::fd` and be merged with the above.
#[cfg(target_os = "hermit")]
use std::os::hermit::io::{AsRawFd, FromRawFd};
use crate::sys::unix::net::{new_ip_socket, socket_addr};
pub fn bind(addr: SocketAddr) -> io::Result<net::UdpSocket> {
let fd = new_ip_socket(addr, libc::SOCK_DGRAM)?;
let socket = unsafe { net::UdpSocket::from_raw_fd(fd) };
let (raw_addr, raw_addr_length) = socket_addr(&addr);
syscall!(bind(fd, raw_addr.as_ptr(), raw_addr_length))?;
Ok(socket)
}
pub(crate) fn only_v6(socket: &net::UdpSocket) -> io::Result<bool> {
let mut optval: libc::c_int = 0;
let mut optlen = mem::size_of::<libc::c_int>() as libc::socklen_t;
syscall!(getsockopt(
socket.as_raw_fd(),
libc::IPPROTO_IPV6,
libc::IPV6_V6ONLY,
&mut optval as *mut _ as *mut _,
&mut optlen,
))?;
Ok(optval != 0)
}