pub fn sendmsg<Fd: AsFd>(
    socket: Fd,
    iov: &[IoSlice<'_>],
    control: &mut SendAncillaryBuffer<'_, '_, '_>,
    flags: SendFlags,
) -> Result<usize>Expand description
sendmsg(msghdr)—Sends a message on a socket.
This function is for use on connected sockets, as it doesn’t have a way to
specify an address. See sendmsg_addr to send messages on unconnected
sockets.