Send initial dirsync packet and handshake timeout

Signed-off-by: Luca Fulchir <luca.fulchir@runesauth.com>

src/connection/handshake/mod.rs

@@ -78,12 +78,10 @@ pub(crate) struct HandshakeServer {
 }
 
 pub(crate) struct HandshakeClient {
-    pub id: KeyID,
-    pub key: PrivKey,
     pub service_id: ServiceID,
     pub service_conn_id: IDRecv,
     pub connection: Connection,
-    pub timeout: Rc<u32>,
+    pub timeout: Option<::tokio::task::JoinHandle<()>>,
 }
 
 /// Tracks the keys used by the client and the handshake
@@ -131,7 +129,7 @@ impl HandshakeClientList {
         service_id: ServiceID,
         service_conn_id: IDRecv,
         connection: Connection,
-    ) -> Result<(KeyID, &HandshakeClient), ()> {
+    ) -> Result<(KeyID, &mut HandshakeClient), ()> {
         let maybe_free_key_idx =
             self.used.iter().enumerate().find_map(|(idx, bmap)| {
                 match bmap.first_false_index() {
@@ -159,18 +157,16 @@ impl HandshakeClientList {
             self.keys.push(None);
             self.list.push(None);
         }
-        self.keys[free_key_idx] = Some((priv_key.clone(), pub_key));
+        self.keys[free_key_idx] = Some((priv_key, pub_key));
         self.list[free_key_idx] = Some(HandshakeClient {
-            id: KeyID(free_key_idx as u16),
-            key: priv_key,
             service_id,
             service_conn_id,
             connection,
-            timeout: Rc::new(0),
+            timeout: None,
         });
         Ok((
             KeyID(free_key_idx as u16),
-            self.list[free_key_idx].as_ref().unwrap(),
+            self.list[free_key_idx].as_mut().unwrap(),
         ))
     }
 }

src/dnssec/record.rs

@@ -186,6 +186,17 @@ pub struct Address {
 }
 
 impl Address {
+    /// return this Address as a socket address
+    /// Note that since Fenrir can work on top of IP, without ports,
+    /// this is not guaranteed to return a SocketAddr
+    pub fn as_sockaddr(&self) -> Option<::std::net::SocketAddr> {
+        match self.port {
+            Some(port) => {
+                Some(::std::net::SocketAddr::new(self.ip, port.get()))
+            }
+            None => None,
+        }
+    }
     fn raw_len(&self) -> usize {
         // UDP port + Priority + Weight + pubkey_len + handshake_len
         let mut size = 6;

src/inner/mod.rs

@@ -99,7 +99,7 @@ impl HandshakeTracker {
         service_id: ServiceID,
         service_conn_id: IDRecv,
         connection: Connection,
-    ) -> Result<(KeyID, &HandshakeClient), ()> {
+    ) -> Result<(KeyID, &mut HandshakeClient), ()> {
         self.hshake_cli.add(
             priv_key,
             pub_key,
@@ -108,6 +108,16 @@ impl HandshakeTracker {
             connection,
         )
     }
+    pub(crate) fn timeout_client(
+        &mut self,
+        key_id: KeyID,
+    ) -> Option<[IDRecv; 2]> {
+        if let Some(hshake) = self.hshake_cli.remove(key_id) {
+            Some([hshake.connection.id_recv, hshake.service_conn_id])
+        } else {
+            None
+        }
+    }
     pub(crate) fn recv_handshake(
         &mut self,
         mut handshake: Handshake,

src/inner/worker.rs

@@ -14,7 +14,7 @@ use crate::{
     },
     dnssec,
     enc::{
-        asym::{PrivKey, PubKey},
+        asym::{KeyID, PrivKey, PubKey},
         hkdf::{self, Hkdf, HkdfKind},
         sym, Random, Secret,
     },
@@ -24,7 +24,7 @@ use ::std::{rc::Rc, sync::Arc, vec::Vec};
 /// This worker must be cpu-pinned
 use ::tokio::{
     net::UdpSocket,
-    sync::{oneshot, Mutex},
+    sync::{mpsc, oneshot, Mutex},
 };
 
 /// Track a raw Udp packet
@@ -48,6 +48,7 @@ pub(crate) enum Work {
     /// connections present
     CountConnections(oneshot::Sender<usize>),
     Connect(ConnectInfo),
+    DropHandshake(KeyID),
     Recv(RawUdp),
 }
 pub(crate) enum WorkAnswer {
@@ -64,6 +65,8 @@ pub(crate) struct Worker {
     token_check: Option<Arc<Mutex<TokenChecker>>>,
     sockets: Vec<UdpSocket>,
     queue: ::async_channel::Receiver<Work>,
+    queue_timeouts_recv: mpsc::UnboundedReceiver<Work>,
+    queue_timeouts_send: mpsc::UnboundedSender<Work>,
     thread_channels: Vec<::async_channel::Sender<Work>>,
     connections: ConnList,
     handshakes: HandshakeTracker,
@@ -132,6 +135,8 @@ impl Worker {
             }
         };
 
+        let (queue_timeouts_send, queue_timeouts_recv) =
+            mpsc::unbounded_channel();
         Ok(Self {
             cfg,
             thread_id,
@@ -140,6 +145,8 @@ impl Worker {
             token_check,
             sockets,
             queue,
+            queue_timeouts_recv,
+            queue_timeouts_send,
             thread_channels: Vec::new(),
             connections: ConnList::new(thread_id),
             handshakes: HandshakeTracker::new(thread_id),
@@ -151,6 +158,12 @@ impl Worker {
                 _done = self.stop_working.recv() => {
                     break;
                 }
+                maybe_timeout = self.queue.recv() => {
+                    match maybe_timeout {
+                        Ok(work) => work,
+                        Err(_) => break,
+                    }
+                }
                 maybe_work = self.queue.recv() => {
                     match maybe_work {
                         Ok(work) => work,
@@ -166,11 +179,13 @@ impl Worker {
                 Work::Connect(conn_info) => {
                     // PERF: geolocation
 
-                    // Find the first destination with a coherent
-                    // pubkey/key exchange
+                    // Find the first destination with:
+                    // * UDP port
+                    // * a coherent pubkey/key exchange.
                     let destination =
                         conn_info.resolved.addresses.iter().find_map(|addr| {
-                            if addr
+                            if addr.port.is_none()
+                                || addr
                                     .handshake_ids
                                     .iter()
                                     .find(|h_srv| {
@@ -179,7 +194,7 @@ impl Worker {
                                     .is_none()
                             {
                                 // skip servers with no corresponding
-                                // handshake types
+                                // handshake types or no udp port
                                 return None;
                             }
 
@@ -250,7 +265,6 @@ impl Worker {
                         }
                     };
 
-                    // FIXME: save KeyID
                     let (priv_key, pub_key) =
                         match exchange.new_keypair(&self.rand) {
                             Ok(pair) => pair,
@@ -353,12 +367,34 @@ impl Worker {
                         continue 'mainloop;
                     }
 
-                    // start timeout
+                    // send always from the first socket
+                    // FIXME: select based on routing table
+                    let sender = self.sockets[0].local_addr().unwrap();
+                    let dest = UdpServer(addr.as_sockaddr().unwrap());
 
-                    // send packeti
-                    //self.send_packet(raw,
+                    // start the timeout right before sending the packet
+                    hshake.timeout = Some(::tokio::task::spawn_local(
+                        Self::handshake_timeout(
+                            self.queue_timeouts_send.clone(),
+                            client_key_id,
+                        ),
+                    ));
 
-                    todo!()
+                    // send packet
+                    self.send_packet(raw, UdpClient(sender), dest).await;
+
+                    continue 'mainloop;
+                }
+                Work::DropHandshake(key_id) => {
+                    if let Some(connections) =
+                        self.handshakes.timeout_client(key_id)
+                    {
+                        for conn_id in connections.into_iter() {
+                            if !conn_id.0.is_handshake() {
+                                self.connections.delete(conn_id);
+                            }
+                        }
+                    };
                 }
                 //TODO: reconf message to add channels
                 Work::Recv(pkt) => {
@@ -367,6 +403,13 @@ impl Worker {
             }
         }
     }
+    async fn handshake_timeout(
+        timeout_queue: mpsc::UnboundedSender<Work>,
+        key_id: KeyID,
+    ) {
+        ::tokio::time::sleep(::std::time::Duration::from_secs(10)).await;
+        let _ = timeout_queue.send(Work::DropHandshake(key_id));
+    }
     /// Read and do stuff with the raw udp packet
     async fn recv(&mut self, mut udp: RawUdp) {
         if udp.packet.id.is_handshake() {