Don't create new outgoing TCP connections when torrent is done

lib/swarm.js

@@ -364,6 +364,8 @@ Swarm.prototype._drain = function () {
   conn.on('close', function () {
     if (self.destroyed) return
 
+    // TODO: If torrent is done, do not try to reconnect after a timeout
+
     if (peer.retries >= RECONNECT_WAIT.length) {
       debug(
         'conn %s closed: will not re-add (max %s attempts)',

lib/torrent.js

@@ -299,7 +299,11 @@ Torrent.prototype._onSwarmListening = function () {
     port: self.client.torrentPort
   })
   self.discovery.on('error', self._onError.bind(self))
-  self.discovery.on('peer', self.addPeer.bind(self))
+  self.discovery.on('peer', function (peer) {
+    // Don't create new outgoing TCP connections when torrent is done
+    if (typeof peer === 'string' && self.done) return
+    self.addPeer(peer)
+  })
 
   // expose discovery events
   reemit(self.discovery, self, ['trackerAnnounce', 'dhtAnnounce', 'warning'])