Fix cleanup DHT tables cache on torrent removal

index.js

@@ -390,6 +390,10 @@ WebTorrent.prototype._remove = function (torrentId, cb) {
   var torrent = this.get(torrentId)
   if (!torrent) return
   this.torrents.splice(this.torrents.indexOf(torrent), 1)
+  // clear hash entity in cache to be able use pears search again
+  if (this.dht) {
+    this.dht._tables.remove(torrent.infoHash)
+  }
   torrent.destroy(cb)
 }
 

lib/torrent.js

@@ -31,6 +31,8 @@ var uniq = require('uniq')
 var utMetadata = require('ut_metadata')
 var utPex = require('ut_pex') // browser exclude
 var parseRange = require('parse-numeric-range')
+var thunky = require('thunky')
+var raf = require('random-access-file')
 
 var File = require('./file')
 var Peer = require('./peer')
@@ -1602,10 +1604,33 @@ Torrent.prototype._checkDone = function () {
     }
     if (!done) break
   }
-  if (!self.done && done) {
-    self.done = true
-    self._debug('torrent done: ' + self.infoHash)
-    self.emit('done')
+  if (done) {
+    const done = () => {
+      self.done = true
+      self._debug('torrent done: ' + self.infoHash)
+      self.emit('done')
+    }
+    // flush files to be able to open after download finish
+    if(self._store === FSChunkStore)
+    {
+      let tasks = self.store.store.files.map(function (storeFile) {
+        return function (cb) {
+            storeFile.open(function (err, file) {
+             // an open error is okay because that means the file is not open
+             if (err) return cb(null)
+             file.close(() => {
+                storeFile.open = thunky((cb) => cb(null, raf(storeFile.path)))
+                cb()
+             })
+            })
+          }
+      })
+      parallel(tasks, done)
+    }
+    else
+    {
+      done()
+    }
   }
   self._gcSelections()
 

package.json

@@ -61,7 +61,7 @@
     "stream-to-blob": "^1.0.0",
     "stream-to-blob-url": "^2.1.0",
     "stream-with-known-length-to-buffer": "^1.0.0",
-    "torrent-discovery": "^8.3.1",
+    "torrent-discovery": "^9.1.1",
     "torrent-piece": "^1.1.0",
     "uniq": "^1.0.1",
     "unordered-array-remove": "^1.0.2",