Add test: no "update" events after destroy()

lib/client/websocket-tracker.js

@@ -169,12 +169,12 @@ WebSocketTracker.prototype._openSocket = function () {
   } else {
     self.socket = socketPool[self.announceUrl] = new Socket(self.announceUrl)
     self.socket.consumers = 1
-    self.socket.on('connect', self._onSocketConnectBound)
+    self.socket.once('connect', self._onSocketConnectBound)
   }
 
   self.socket.on('data', self._onSocketDataBound)
-  self.socket.on('close', self._onSocketCloseBound)
-  self.socket.on('error', self._onSocketErrorBound)
+  self.socket.once('close', self._onSocketCloseBound)
+  self.socket.once('error', self._onSocketErrorBound)
 }
 
 WebSocketTracker.prototype._onSocketConnect = function () {

test/destroy.js

@@ -0,0 +1,51 @@
+var Buffer = require('safe-buffer').Buffer
+var Client = require('../')
+var common = require('./common')
+var fixtures = require('webtorrent-fixtures')
+var test = require('tape')
+
+var peerId = Buffer.from('01234567890123456789')
+var port = 6881
+
+function testNoEventsAfterDestroy (t, serverType) {
+  t.plan(1)
+
+  common.createServer(t, serverType, function (server, announceUrl) {
+    var client = new Client({
+      infoHash: fixtures.leaves.parsedTorrent.infoHash,
+      announce: announceUrl,
+      peerId: peerId,
+      port: port,
+      wrtc: {}
+    })
+
+    if (serverType === 'ws') common.mockWebsocketTracker(client)
+    client.on('error', function (err) { t.error(err) })
+    client.on('warning', function (err) { t.error(err) })
+
+    client.once('update', function () {
+      t.fail('no "update" event should fire, since client is destroyed')
+    })
+
+    // announce, then immediately destroy
+    client.update()
+    client.destroy()
+
+    setTimeout(function () {
+      t.pass('wait to see if any events are fired')
+      server.close()
+    }, 1000)
+  })
+}
+
+test('http: no "update" events after destroy()', function (t) {
+  testNoEventsAfterDestroy(t, 'http')
+})
+
+test('udp: no "update" events after destroy()', function (t) {
+  testNoEventsAfterDestroy(t, 'udp')
+})
+
+test('ws: no "update" events after destroy()', function (t) {
+  testNoEventsAfterDestroy(t, 'ws')
+})