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Merge pull request #232 from ikatson/upnp-multicast-multiaddr

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UPNP: join all multicast groups from all interfaces (not just the default one picked by the kernel)
This commit is contained in:
Igor Katson 2024-09-06 14:55:56 +01:00 • committed by GitHub
commit cdd21cb5ca
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1 changed files with 26 additions and 10 deletions
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36
crates/upnp-serve/src/ssdp.rs
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@ -5,6 +5,7 @@ use std::{
use anyhow::{bail, Context};
use bstr::BStr;
use network_interface::NetworkInterfaceConfig;
use tokio::net::UdpSocket;
use tokio_util::sync::CancellationToken;
use tracing::{debug, trace, warn};
@ -125,10 +126,27 @@ impl SsdpRunner {
let socket = tokio::net::UdpSocket::from_std(sock.into())
.context("error converting socket2 socket to tokio")?;
trace!(multiaddr=?UPNP_BROADCAST_IP, interface=?Ipv4Addr::UNSPECIFIED, "joining multicast v4 group");
socket
.join_multicast_v4(UPNP_BROADCAST_IP, Ipv4Addr::UNSPECIFIED)
.context("error joining multicast group")?;
let default_multiast_membership_ip = std::iter::once(Ipv4Addr::UNSPECIFIED);
let all_multicast_membership_ips = network_interface::NetworkInterface::show()
.into_iter()
.flatten()
.flat_map(|nic| nic.addr.into_iter())
.filter_map(|addr| {
let ip = addr.ip();
match ip {
std::net::IpAddr::V4(addr) if addr.is_private() && !addr.is_loopback() => {
Some(addr)
}
_ => None,
}
});
for ifaddr in default_multiast_membership_ip.chain(all_multicast_membership_ips) {
trace!(multiaddr=?UPNP_BROADCAST_IP, interface=?ifaddr, "joining multicast v4 group");
if let Err(e) = socket.join_multicast_v4(UPNP_BROADCAST_IP, ifaddr) {
debug!(error=?e, multiaddr=?UPNP_BROADCAST_IP, interface=?ifaddr, "error joining multicast v4 group");
}
}
Ok(Self { opts, socket })
}
@ -191,15 +209,13 @@ Content-Length: 0\r\n\r\n"
.into_iter()
.flat_map(|ni| ni.addr)
.filter_map(|addr| {
let ip = addr.ip();
if ip.is_ipv4() && !ip.is_loopback() {
Some(ip)
} else {
None
match addr.ip() {
std::net::IpAddr::V4(a) if !a.is_loopback() && a.is_private() => Some(a),
_ => None
}
})
.map(|ip| async move {
let addr = SocketAddr::new(ip, 0);
let addr = SocketAddrV4::new(ip, 0);
let sock = match tokio::net::UdpSocket::bind(addr).await {
Ok(sock) => sock,
Err(e) => {