53 lines
1.1 KiB
Rust
53 lines
1.1 KiB
Rust
use std::{
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env,
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net::{
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Ipv4Addr,
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UdpSocket,
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},
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str::FromStr,
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};
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use anyhow::{
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self,
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Result,
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bail,
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};
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fn main () -> Result <()> {
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let mut args = env::args ();
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let _exe_name = args.next ();
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match args.next ().as_ref ().map (|s| &s[..]) {
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None => bail! ("First argument must be a subcommand"),
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Some ("client") => client ()?,
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Some ("server") => server ()?,
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Some (x) => bail! ("Unknown subcommand {}", x),
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}
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Ok (())
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}
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fn client () -> Result <()> {
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let socket = UdpSocket::bind ("0.0.0.0:9041").unwrap ();
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socket.join_multicast_v4 (&(Ipv4Addr::from_str ("225.100.99.98").unwrap ()), &([0u8, 0, 0, 0].into ())).unwrap ();
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socket.send_to ("hi there".as_bytes (), ("225.100.99.98", 9040)).unwrap ();
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Ok (())
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}
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fn server () -> Result <()> {
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let socket = UdpSocket::bind ("0.0.0.0:9040").unwrap ();
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socket.join_multicast_v4 (&(Ipv4Addr::from_str ("225.100.99.98").unwrap ()), &([0u8, 0, 0, 0].into ())).unwrap ();
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let mut buf = vec! [0u8; 4096];
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let (bytes_recved, remote_addr) = socket.recv_from (&mut buf).unwrap ();
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dbg! (bytes_recved, remote_addr);
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Ok (())
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}
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