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allow loopback src address in listener (#1730)

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This commit is contained in:
KKRainbow
2026-01-01 00:41:56 +08:00
committed by GitHub
parent 7c563153ae
commit 4e651a72f7
7 changed files with 99 additions and 52 deletions
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easytier/src/gateway/udp_proxy.rs
+24 -11
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@@ -298,6 +298,30 @@ impl UdpProxy {
udp::UdpPacket::new(ipv4.payload())?
};
// TODO: should it be async.
let dst_socket = if Some(ipv4.get_destination())
== self.global_ctx.get_ipv4().as_ref().map(Ipv4Inet::address)
{
if self
.global_ctx
.is_port_in_running_listeners(udp_packet.get_destination(), true)
&& self
.global_ctx
.is_ip_in_same_network(&std::net::IpAddr::V4(ipv4.get_source()))
{
tracing::debug!(
dst_port = udp_packet.get_destination(),
"dst socket is in running listeners, ignore it"
);
return Some(());
}
format!("127.0.0.1:{}", udp_packet.get_destination())
.parse()
.unwrap()
} else {
SocketAddr::new(real_dst_ip.into(), udp_packet.get_destination())
};
tracing::trace!(
?packet,
?ipv4,
@@ -339,17 +363,6 @@ impl UdpProxy {
nat_entry.mark_active();
// TODO: should it be async.
let dst_socket = if Some(ipv4.get_destination())
== self.global_ctx.get_ipv4().as_ref().map(Ipv4Inet::address)
{
format!("127.0.0.1:{}", udp_packet.get_destination())
.parse()
.unwrap()
} else {
SocketAddr::new(real_dst_ip.into(), udp_packet.get_destination())
};
let send_ret = {
let _g = self.global_ctx.net_ns.guard();
nat_entry