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Fixing memory leak with listeners

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The listeners from MediaManager and SimplePeer were never removed, leading to a huge amount of listeners all over the applications when switching regularly of scene.
This commit is contained in:
David Négrier 2020-06-23 14:56:57 +02:00
parent 12ce0e16ed
commit d78006e106
3 changed files with 56 additions and 30 deletions
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2
front/src/Phaser/Game/GameScene.ts
View File

@ -190,6 +190,7 @@ export class GameScene extends Phaser.Scene {
console.log('Player disconnected from server. Reloading scene.');
this.simplePeer.closeAllConnections();
this.simplePeer.unregister();
const key = 'somekey'+Math.round(Math.random()*10000);
const game : Phaser.Scene = GameScene.createFromUrl(this.MapUrlFile, this.instance, key);
@ -610,6 +611,7 @@ export class GameScene extends Phaser.Scene {
if(nextSceneKey){
// We are completely destroying the current scene to avoid using a half-backed instance when coming back to the same map.
this.connection.closeConnection();
this.simplePeer.unregister();
this.scene.stop();
this.scene.remove(this.scene.key);
this.scene.start(nextSceneKey.key, {

36
front/src/WebRtc/MediaManager.ts
View File

@ -3,7 +3,10 @@ const videoConstraint: boolean|MediaTrackConstraints = {
height: { ideal: 720 },
facingMode: "user"
};
export class MediaManager {
type UpdatedLocalStreamCallback = (media: MediaStream) => void;
class MediaManager {
localStream: MediaStream|null = null;
private remoteVideo: Map<string, HTMLVideoElement> = new Map<string, HTMLVideoElement>();
myCamVideo: HTMLVideoElement;
@ -16,11 +19,9 @@ export class MediaManager {
audio: true,
video: videoConstraint
};
updatedLocalStreamCallBack : (media: MediaStream) => void;
constructor(updatedLocalStreamCallBack : (media: MediaStream) => void) {
this.updatedLocalStreamCallBack = updatedLocalStreamCallBack;
updatedLocalStreamCallBacks : Set<UpdatedLocalStreamCallback> = new Set<UpdatedLocalStreamCallback>();
constructor() {
this.myCamVideo = this.getElementByIdOrFail<HTMLVideoElement>('myCamVideo');
this.webrtcInAudio = this.getElementByIdOrFail<HTMLAudioElement>('audio-webrtc-in');
this.webrtcInAudio.volume = 0.2;
@ -54,6 +55,21 @@ export class MediaManager {
});
}
onUpdateLocalStream(callback: UpdatedLocalStreamCallback): void {
this.updatedLocalStreamCallBacks.add(callback);
}
removeUpdateLocalStreamEventListener(callback: UpdatedLocalStreamCallback): void {
this.updatedLocalStreamCallBacks.delete(callback);
}
private triggerUpdatedLocalStreamCallbacks(stream: MediaStream): void {
for (const callback of this.updatedLocalStreamCallBacks) {
callback(stream);
}
}
activeVisio(){
const webRtc = this.getElementByIdOrFail('webRtc');
webRtc.classList.add('active');
@ -64,7 +80,7 @@ export class MediaManager {
this.cinema.style.display = "block";
this.constraintsMedia.video = videoConstraint;
this.getCamera().then((stream: MediaStream) => {
this.updatedLocalStreamCallBack(stream);
this.triggerUpdatedLocalStreamCallbacks(stream);
});
}
@ -79,7 +95,7 @@ export class MediaManager {
});
}
this.getCamera().then((stream) => {
this.updatedLocalStreamCallBack(stream);
this.triggerUpdatedLocalStreamCallbacks(stream);
});
}
@ -88,7 +104,7 @@ export class MediaManager {
this.microphone.style.display = "block";
this.constraintsMedia.audio = true;
this.getCamera().then((stream) => {
this.updatedLocalStreamCallBack(stream);
this.triggerUpdatedLocalStreamCallbacks(stream);
});
}
@ -102,7 +118,7 @@ export class MediaManager {
});
}
this.getCamera().then((stream) => {
this.updatedLocalStreamCallBack(stream);
this.triggerUpdatedLocalStreamCallbacks(stream);
});
}
@ -308,3 +324,5 @@ export class MediaManager {
}
}
export const mediaManager = new MediaManager();

48
front/src/WebRtc/SimplePeer.ts
View File

@ -4,7 +4,7 @@ import {
WebRtcSignalMessageInterface,
WebRtcStartMessageInterface
} from "../Connection";
import {MediaManager} from "./MediaManager";
import { mediaManager } from "./MediaManager";
import * as SimplePeerNamespace from "simple-peer";
const Peer: SimplePeerNamespace.SimplePeer = require('simple-peer');
@ -22,16 +22,15 @@ export class SimplePeer {
private WebRtcRoomId: string;
private Users: Array<UserSimplePeer> = new Array<UserSimplePeer>();
private MediaManager: MediaManager;
private PeerConnectionArray: Map<string, SimplePeerNamespace.Instance> = new Map<string, SimplePeerNamespace.Instance>();
private readonly updateLocalStreamCallback: (media: MediaStream) => void;
constructor(Connection: Connection, WebRtcRoomId: string = "test-webrtc") {
this.Connection = Connection;
this.WebRtcRoomId = WebRtcRoomId;
this.MediaManager = new MediaManager((stream : MediaStream) => {
this.updatedLocalStream();
});
// We need to go through this weird bound function pointer in order to be able to "free" this reference later.
this.updateLocalStreamCallback = this.updatedLocalStream.bind(this);
mediaManager.onUpdateLocalStream(this.updateLocalStreamCallback);
this.initialise();
}
@ -45,8 +44,8 @@ export class SimplePeer {
this.receiveWebrtcSignal(message);
});
this.MediaManager.activeVisio();
this.MediaManager.getCamera().then(() => {
mediaManager.activeVisio();
mediaManager.getCamera().then(() => {
//receive message start
this.Connection.receiveWebrtcStart((message: WebRtcStartMessageInterface) => {
@ -105,8 +104,8 @@ export class SimplePeer {
name = userSearch.name;
}
}
this.MediaManager.removeActiveVideo(user.userId);
this.MediaManager.addActiveVideo(user.userId, name);
mediaManager.removeActiveVideo(user.userId);
mediaManager.addActiveVideo(user.userId, name);
const peer : SimplePeerNamespace.Instance = new Peer({
initiator: user.initiator ? user.initiator : false,
@ -143,15 +142,15 @@ export class SimplePeer {
}
});
if(microphoneActive){
this.MediaManager.enabledMicrophoneByUserId(user.userId);
mediaManager.enabledMicrophoneByUserId(user.userId);
}else{
this.MediaManager.disabledMicrophoneByUserId(user.userId);
mediaManager.disabledMicrophoneByUserId(user.userId);
}
if(videoActive){
this.MediaManager.enabledVideoByUserId(user.userId);
mediaManager.enabledVideoByUserId(user.userId);
}else{
this.MediaManager.disabledVideoByUserId(user.userId);
mediaManager.disabledVideoByUserId(user.userId);
}
this.stream(user.userId, stream);
});
@ -167,11 +166,11 @@ export class SimplePeer {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
peer.on('error', (err: any) => {
console.error(`error => ${user.userId} => ${err.code}`, err);
this.MediaManager.isError(user.userId);
mediaManager.isError(user.userId);
});
peer.on('connect', () => {
this.MediaManager.isConnected(user.userId);
mediaManager.isConnected(user.userId);
console.info(`connect => ${user.userId}`);
});
@ -192,7 +191,7 @@ export class SimplePeer {
*/
private closeConnection(userId : string) {
try {
this.MediaManager.removeActiveVideo(userId);
mediaManager.removeActiveVideo(userId);
const peer = this.PeerConnectionArray.get(userId);
if (peer === undefined) {
console.warn("Tried to close connection for user "+userId+" but could not find user")
@ -215,6 +214,13 @@ export class SimplePeer {
}
}
/**
* Unregisters any held event handler.
*/
public unregister() {
mediaManager.removeUpdateLocalStreamEventListener(this.updateLocalStreamCallback);
}
/**
*
* @param userId
@ -253,11 +259,11 @@ export class SimplePeer {
*/
private stream(userId : string, stream: MediaStream) {
if(!stream){
this.MediaManager.disabledVideoByUserId(userId);
this.MediaManager.disabledMicrophoneByUserId(userId);
mediaManager.disabledVideoByUserId(userId);
mediaManager.disabledMicrophoneByUserId(userId);
return;
}
this.MediaManager.addStreamRemoteVideo(userId, stream);
mediaManager.addStreamRemoteVideo(userId, stream);
}
/**
@ -266,7 +272,7 @@ export class SimplePeer {
*/
private addMedia (userId : string) {
try {
const localStream: MediaStream|null = this.MediaManager.localStream;
const localStream: MediaStream|null = mediaManager.localStream;
const peer = this.PeerConnectionArray.get(userId);
if(localStream === null) {
//send fake signal