session: cleanup

src/net/session.rs

@@ -49,6 +49,8 @@ struct InnerSession {
     port: u16,
 }
 
+// == Session ==
+
 pub struct Session {
     // inner: Arc<InnerSession>,
     sender: Sender<Signal>,
@@ -95,6 +97,8 @@ impl Session {
     }
 }
 
+// == SessionPeer ==
+
 struct SessionPeer {
     sock: PeerConnection,
     bitfield: BitField,
@@ -117,6 +121,8 @@ impl SessionPeer {
     }
 }
 
+// == FragmentStatus ==
+
 #[derive(Copy, Clone, Debug)]
 enum FragmentStatus {
     Available,
@@ -124,17 +130,23 @@ enum FragmentStatus {
     Taken(Instant),
 }
 
+// == SessionFragment ==
+
 pub struct SessionFragment {
     begin: u32,
     length: u32,
     status: FragmentStatus,
 }
 
+// == SessionPiece ==
+
 struct SessionPiece {
     fragments: BTreeMap<u32, SessionFragment>,
     buffer: PieceBuffer,
 }
 
+// == SessionTorrent ==
+
 struct SessionTorrent {
     metainfo: Metainfo,
     own_bitfield: BitField,
@@ -310,6 +322,8 @@ impl SessionTorrent {
     }
 }
 
+// == SessionNetworkThread ==
+
 struct SessionNetworkThread {
     session: Arc<InnerSession>,
     sender: Sender<Signal>,
@@ -320,34 +334,13 @@ struct SessionNetworkThread {
 }
 
 impl SessionNetworkThread {
-    pub fn run(mut self, input: Receiver<Signal>) {
-        for signal in input.iter() {
+    pub fn run(mut self, signals: Receiver<Signal>) {
+        for signal in signals.iter() {
             match signal {
                 Signal::AddTorrent(torrent) => self.signal_add_torrent(torrent),
-                Signal::RemoveTorrent(id) => {
-                    if let Some(mut sess_torrent) = self.torrents.remove(&id) {
-                        for peer in sess_torrent.peers.values_mut() {
-                            peer.sock.shutdown();
-                        }
-                    }
-                }
-                Signal::ConnectionOpened { info_hash, peer_id, sock } => {
-                    if let Some(sess_torrent) = self.torrents.get_mut(&info_hash) {
-                        let mut peer = SessionPeer::new(sock, sess_torrent.metainfo.pieces.len() as u32);
-                        peer.sock.send_interested();
-                        peer.am_interested = true;
-                        sess_torrent.peers.insert(peer_id, peer);
-                    }
-                }
-                Signal::ConnectionClosed { info_hash, peer_id } => {
-                    if let Some(sess_torrent) = self.torrents.get_mut(&info_hash) {
-                        if let Some(mut peer) = sess_torrent.peers.remove(&peer_id) {
-                            // if !peer.peer_choking && self.seeds > 1 {
-                            //     self.seeds -= 1;
-                            // }
-                        }
-                    }
-                }
+                Signal::RemoveTorrent(id) => self.signal_remove_torrent(&id),
+                Signal::ConnectionOpened { info_hash, peer_id, sock } => self.signal_connection_opened(&info_hash, &peer_id, sock),
+                Signal::ConnectionClosed { info_hash, peer_id } => self.signal_connection_closed(&info_hash, &peer_id),
                 Signal::Packet { info_hash, peer_id, packet } => self.signal_packet(info_hash, peer_id, packet),
                 Signal::Stop => break,
             }
@@ -399,6 +392,33 @@ impl SessionNetworkThread {
         }
     }
 
+    fn signal_remove_torrent(&mut self, id: &Hash) {
+        if let Some(mut sess_torrent) = self.torrents.remove(id) {
+            for peer in sess_torrent.peers.values_mut() {
+                peer.sock.shutdown();
+            }
+        }
+    }
+
+    fn signal_connection_opened(&mut self, info_hash: &Hash, peer_id: &Hash, conn: PeerConnection) {
+        if let Some(sess_torrent) = self.torrents.get_mut(info_hash) {
+            let mut peer = SessionPeer::new(conn, sess_torrent.metainfo.pieces.len() as u32);
+            peer.sock.send_interested();
+            peer.am_interested = true;
+            sess_torrent.peers.insert(*peer_id, peer);
+        }
+    }
+
+    fn signal_connection_closed(&mut self, info_hash: &Hash, peer_id: &Hash) {
+        if let Some(sess_torrent) = self.torrents.get_mut(&info_hash) {
+            if let Some(mut peer) = sess_torrent.peers.remove(&peer_id) {
+                // if !peer.peer_choking && self.seeds > 1 {
+                //     self.seeds -= 1;
+                // }
+            }
+        }
+    }
+
     fn signal_packet(&mut self, info_hash: Hash, peer_id: Hash, packet: Packet) {
         if let Some(torrent) = self.torrents.get_mut(&info_hash) {
             match packet {