Crate socket_pktinfo
source ·Expand description
Small library to allow cross-platform handling of IP_PKTINFO and IPV6_PKTINFO with socket2 crate.
Primary use case for this crate is to determine if a UDP packet was sent to a unicast, broadcast or multicast IP address.
Library implements a cross-platform wrapper crate::PktInfoUdpSocket
around socket2::Socket
which returns data extracted from
the IP_PKTINFO and IPV6_PKTINFO control messages. Compatible with Windows, Linux and macOS.
§Examples
use std::net::{Ipv4Addr, SocketAddrV4};
use socket2::{Domain, SockAddr};
use socket_pktinfo::PktInfoUdpSocket;
let mut buf = [0; 1024];
let mut socket = PktInfoUdpSocket::new(Domain::IPV4)?;
socket.bind(&SocketAddrV4::new(Ipv4Addr::UNSPECIFIED, 8000).into())?;
match socket.recv(&mut buf) {//!
Ok((bytes_received, info)) => {
println!("{} bytes received on interface index {} from src {} with destination ip {}",
bytes_received, info.if_index, info.addr_src, info.addr_dst);
}
Err(e) => {
eprintln!("Error receiving packet - {}", e);
}
}