Fix some undefined this in js classes

web/static/js/main.js

@@ -58,6 +58,7 @@ export function initViewerPage(stream, stunServers, viewersCounterRefreshPeriod)
         stream,
     );
     viewerCounter.regularUpdate(viewersCounterRefreshPeriod);
+    viewerCounter.refreshViewersCounter();
 
     // Side widget toggler
     const sideWidgetToggle = document.getElementById("sideWidgetToggle");

web/static/js/modules/viewerCounter.js

@@ -17,10 +17,10 @@ export class ViewerCounter {
      * @param {Number} updatePeriod 
      */
     regularUpdate(updatePeriod) {
-        setInterval(this._refreshViewersCounter, updatePeriod);
+        setInterval(() => this.refreshViewersCounter(), updatePeriod);
     }
 
-    _refreshViewersCounter() {
+    refreshViewersCounter() {
         fetch(this.url)
             .then(response => response.json())
             .then((data) => this.element.innerText = data.ConnectedViewers)

web/static/js/modules/webrtc.js

@@ -17,8 +17,8 @@ export class GsWebRTC {
         this.pc.addTransceiver("audio", { "direction": "sendrecv" });
 
         // Configure events
-        this.pc.oniceconnectionstatechange = this._onConnectionStateChange;
-        this.pc.ontrack = this._onTrack;
+        this.pc.oniceconnectionstatechange = () => this._onConnectionStateChange();
+        this.pc.ontrack = (e) => this._onTrack(e);
     }
 
     /**

web/static/js/modules/websocket.js

@@ -23,11 +23,11 @@ export class GsWebSocket {
         });
         this.socket.addEventListener("close", () => {
             console.log("WebSocket closed, retrying connection in 1s...");
-            setTimeout(this._open, 1000);
+            setTimeout(() => this._open(), 1000);
         });
         this.socket.addEventListener("error", () => {
             console.log("WebSocket errored, retrying connection in 1s...");
-            setTimeout(this._open, 1000);
+            setTimeout(() => this._open(), 1000);
         });
     }