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#[macro_use] extern crate bitflags;
extern crate byteorder;
pub mod dac;
pub mod protocol;
use protocol::{ReadBytes, SizeBytes};
use std::{io, net};
pub struct RecvDacBroadcasts {
udp_socket: net::UdpSocket,
buffer: [u8; RecvDacBroadcasts::BUFFER_LEN],
}
impl RecvDacBroadcasts {
pub const BUFFER_LEN: usize = protocol::DacBroadcast::SIZE_BYTES;
}
pub fn recv_dac_broadcasts() -> io::Result<RecvDacBroadcasts> {
let broadcast_port = protocol::BROADCAST_PORT;
let broadcast_addr = net::SocketAddrV4::new([0, 0, 0, 0].into(), broadcast_port);
let udp_socket = net::UdpSocket::bind(broadcast_addr)?;
let buffer = [0; RecvDacBroadcasts::BUFFER_LEN];
Ok(RecvDacBroadcasts { udp_socket, buffer })
}
impl Iterator for RecvDacBroadcasts {
type Item = io::Result<(protocol::DacBroadcast, net::SocketAddr)>;
fn next(&mut self) -> Option<Self::Item> {
let RecvDacBroadcasts {
ref mut buffer,
ref mut udp_socket,
} = *self;
let (_len, src_addr) = match udp_socket.recv_from(buffer) {
Ok(msg) => msg,
Err(err) => return Some(Err(err)),
};
let mut bytes = &buffer[..];
let dac_broadcast = match bytes.read_bytes::<protocol::DacBroadcast>() {
Ok(dac_broadcast) => dac_broadcast,
Err(err) => return Some(Err(err)),
};
Some(Ok((dac_broadcast, src_addr)))
}
}