ipv6 support draft

libs/hbb_common/src/udp.rs

@@ -5,7 +5,7 @@ use futures::{SinkExt, StreamExt};
 use protobuf::Message;
 use socket2::{Domain, Socket, Type};
 use std::net::SocketAddr;
-use tokio::net::{ToSocketAddrs, UdpSocket};
+use tokio::net::{lookup_host, ToSocketAddrs, UdpSocket};
 use tokio_socks::{udp::Socks5UdpFramed, IntoTargetAddr, TargetAddr, ToProxyAddrs};
 use tokio_util::{codec::BytesCodec, udp::UdpFramed};
 
@@ -37,35 +37,28 @@ fn new_socket(addr: SocketAddr, reuse: bool, buf_size: usize) -> Result<Socket,
         addr,
         socket.recv_buffer_size()
     );
+    if addr.is_ipv6() && addr.ip().is_unspecified() && addr.port() > 0 {
+        socket.set_only_v6(false).ok();
+    }
     socket.bind(&addr.into())?;
     Ok(socket)
 }
 
 impl FramedSocket {
     pub async fn new<T: ToSocketAddrs>(addr: T) -> ResultType<Self> {
-        let socket = UdpSocket::bind(addr).await?;
-        Ok(Self::Direct(UdpFramed::new(socket, BytesCodec::new())))
+        Self::new_reuse(addr, false, 0).await
     }
 
     #[allow(clippy::never_loop)]
-    pub async fn new_reuse<T: std::net::ToSocketAddrs>(addr: T) -> ResultType<Self> {
-        for addr in addr.to_socket_addrs()? {
-            let socket = new_socket(addr, true, 0)?.into_udp_socket();
-            return Ok(Self::Direct(UdpFramed::new(
-                UdpSocket::from_std(socket)?,
-                BytesCodec::new(),
-            )));
-        }
-        bail!("could not resolve to any address");
-    }
-
-    pub async fn new_with_buf_size<T: std::net::ToSocketAddrs>(
+    pub async fn new_reuse<T: ToSocketAddrs>(
         addr: T,
+        reuse: bool,
         buf_size: usize,
     ) -> ResultType<Self> {
-        for addr in addr.to_socket_addrs()? {
+        for addr in lookup_host(&addr).await? {
+            let socket = new_socket(addr, reuse, buf_size)?.into_udp_socket();
             return Ok(Self::Direct(UdpFramed::new(
-                UdpSocket::from_std(new_socket(addr, false, buf_size)?.into_udp_socket())?,
+                UdpSocket::from_std(socket)?,
                 BytesCodec::new(),
             )));
         }
@@ -165,12 +158,12 @@ impl FramedSocket {
         }
     }
 
-    pub fn is_ipv4(&self) -> bool {
+    pub fn local_addr(&self) -> Option<SocketAddr> {
         if let FramedSocket::Direct(x) = self {
             if let Ok(v) = x.get_ref().local_addr() {
-                return v.is_ipv4();
+                return Some(v);
             }
         }
-        true
+        None
     }
 }

src/relay_server.rs

@@ -8,7 +8,7 @@ use hbb_common::{
     protobuf::Message as _,
     rendezvous_proto::*,
     sleep,
-    tcp::{new_listener, FramedStream},
+    tcp::{listen_any, FramedStream},
     timeout,
     tokio::{
         self,
@@ -77,19 +77,14 @@ pub async fn start(port: &str, key: &str) -> ResultType<()> {
         BLOCKLIST_FILE,
         BLOCKLIST.read().await.len()
     );
-    let addr = format!("0.0.0.0:{}", port);
-    log::info!("Listening on tcp {}", addr);
-    let addr2 = format!("0.0.0.0:{}", port.parse::<u16>().unwrap() + 2);
-    log::info!("Listening on websocket {}", addr2);
+    let port: u16 = port.parse()?;
+    log::info!("Listening on tcp :{}", port);
+    let port2 = port + 2;
+    log::info!("Listening on websocket :{}", port2);
     let main_task = async move {
         loop {
             log::info!("Start");
-            io_loop(
-                new_listener(&addr, false).await?,
-                new_listener(&addr2, false).await?,
-                &key,
-            )
-            .await;
+            io_loop(listen_any(port).await?, listen_any(port2).await?, &key).await;
         }
     };
     let listen_signal = crate::common::listen_signal();

src/rendezvous_server.rs

@@ -15,7 +15,7 @@ use hbb_common::{
         register_pk_response::Result::{TOO_FREQUENT, UUID_MISMATCH},
         *,
     },
-    tcp::{new_listener, FramedStream},
+    tcp::{listen_any, FramedStream},
     timeout,
     tokio::{
         self,
@@ -32,7 +32,7 @@ use ipnetwork::Ipv4Network;
 use sodiumoxide::crypto::sign;
 use std::{
     collections::HashMap,
-    net::{IpAddr, Ipv4Addr, SocketAddr},
+    net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr},
     sync::Arc,
     time::Instant,
 };
@@ -92,15 +92,15 @@ impl RendezvousServer {
     pub async fn start(port: i32, serial: i32, key: &str, rmem: usize) -> ResultType<()> {
         let (key, sk) = Self::get_server_sk(key);
         let addr = format!("0.0.0.0:{}", port);
-        let addr2 = format!("0.0.0.0:{}", port - 1);
-        let addr3 = format!("0.0.0.0:{}", port + 2);
+        let nat_port = port - 1;
+        let ws_port = port + 2;
         let pm = PeerMap::new().await?;
         log::info!("serial={}", serial);
         let rendezvous_servers = get_servers(&get_arg("rendezvous-servers"), "rendezvous-servers");
-        log::info!("Listening on tcp/udp {}", addr);
-        log::info!("Listening on tcp {}, extra port for NAT test", addr2);
-        log::info!("Listening on websocket {}", addr3);
-        let mut socket = FramedSocket::new_with_buf_size(&addr, rmem).await?;
+        log::info!("Listening on tcp/udp :{}", port);
+        log::info!("Listening on tcp :{}, extra port for NAT test", nat_port);
+        log::info!("Listening on websocket :{}", ws_port);
+        let mut socket = create_udp_listener(port, rmem).await?;
         let (tx, mut rx) = mpsc::unbounded_channel::<Data>();
         let software_url = get_arg("software-url");
         let version = hbb_common::get_version_from_url(&software_url);
@@ -138,9 +138,9 @@ impl RendezvousServer {
         log::info!("local-ip: {:?}", rs.inner.local_ip);
         std::env::set_var("PORT_FOR_API", port.to_string());
         rs.parse_relay_servers(&get_arg("relay-servers"));
-        let mut listener = new_listener(&addr, false).await?;
-        let mut listener2 = new_listener(&addr2, false).await?;
-        let mut listener3 = new_listener(&addr3, false).await?;
+        let mut listener = create_tcp_listener(port).await?;
+        let mut listener2 = create_tcp_listener(nat_port).await?;
+        let mut listener3 = create_tcp_listener(ws_port).await?;
         let test_addr = std::env::var("TEST_HBBS").unwrap_or_default();
         if std::env::var("ALWAYS_USE_RELAY")
             .unwrap_or_default()
@@ -186,19 +186,19 @@ impl RendezvousServer {
                 {
                     LoopFailure::UdpSocket => {
                         drop(socket);
-                        socket = FramedSocket::new_with_buf_size(&addr, rmem).await?;
+                        socket = create_udp_listener(port, rmem).await?;
                     }
                     LoopFailure::Listener => {
                         drop(listener);
-                        listener = new_listener(&addr, false).await?;
+                        listener = create_tcp_listener(port).await?;
                     }
                     LoopFailure::Listener2 => {
                         drop(listener2);
-                        listener2 = new_listener(&addr2, false).await?;
+                        listener2 = create_tcp_listener(nat_port).await?;
                     }
                     LoopFailure::Listener3 => {
                         drop(listener3);
-                        listener3 = new_listener(&addr3, false).await?;
+                        listener3 = create_tcp_listener(ws_port).await?;
                     }
                 }
             }
@@ -1268,3 +1268,22 @@ async fn send_rk_res(
     });
     socket.send(&msg_out, addr).await
 }
+
+async fn create_udp_listener(port: i32, rmem: usize) -> ResultType<FramedSocket> {
+    let addr = SocketAddr::new(IpAddr::V6(Ipv6Addr::UNSPECIFIED), port as _);
+    if let Ok(s) = FramedSocket::new_reuse(&addr, false, rmem).await {
+        log::debug!("listen on udp {:?}", s.local_addr());
+        return Ok(s);
+    }
+    let addr = SocketAddr::new(IpAddr::V4(Ipv4Addr::UNSPECIFIED), port as _);
+    let s = FramedSocket::new_reuse(&addr, false, rmem).await?;
+    log::debug!("listen on udp {:?}", s.local_addr());
+    return Ok(s);
+}
+
+#[inline]
+async fn create_tcp_listener(port: i32) -> ResultType<TcpListener> {
+    let s = listen_any(port as _).await?;
+    log::debug!("listen on tcp {:?}", s.local_addr());
+    Ok(s)
+}

src/version.rs

@@ -1,2 +1,2 @@
 pub const VERSION: &str = "1.1.6";
-pub const BUILD_DATE: &str = "2023-01-06 11:03";
+pub const BUILD_DATE: &str = "2023-01-06 20:25";