Some small updates, related to firefox

web/app/rtc/Connection.ts

@@ -528,6 +528,16 @@ export class RTCConnection {
         return this.retryTimestamp;
     }
 
+    restartConnection() {
+        if(this.connectionState === RTPConnectionState.DISCONNECTED) {
+            /* We've been disconnected on purpose */
+            return;
+        }
+
+        this.reset(true);
+        this.doInitialSetup();
+    }
+
     reset(updateConnectionState: boolean) {
         if(this.peer) {
             if(this.getConnection().connected()) {
@@ -691,11 +701,16 @@ export class RTCConnection {
         /* initialize rtc connection */
         this.retryCalculator.reset();
 
-        if(!('RTCPeerConnection' in window)) {
+        if(!("RTCPeerConnection" in window)) {
             this.handleFatalError(tr("WebRTC has been disabled (RTCPeerConnection is not defined)"), false);
             return;
         }
 
+        if(!("addTransceiver" in RTCPeerConnection.prototype)) {
+            this.handleFatalError(tr("WebRTC api incompatible (RTCPeerConnection.addTransceiver missing)"), false);
+            return;
+        }
+
         this.peer = new RTCPeerConnection({
             bundlePolicy: "max-bundle",
             rtcpMuxPolicy: "require",

web/app/rtc/SdpUtils.ts

@@ -10,8 +10,8 @@ interface SdpCodec {
     rtcpFb?: string[]
 }
 
-/* These MUST be the payloads used by the remote as well */
-const OPUS_VOICE_PAYLOAD_TYPE = 111;
+/* For optimal performance these payload formats should match the servers one */
+const OPUS_VOICE_PAYLOAD_TYPE = 111
 const OPUS_MUSIC_PAYLOAD_TYPE = 112;
 const H264_PAYLOAD_TYPE = 126;
 
@@ -24,6 +24,7 @@ type SdpMedia = {
 
 export class SdpProcessor {
     private static readonly kAudioCodecs: SdpCodec[] = [
+        /* Primary audio format */
         {
             /* Opus Mono/Opus Voice */
             payload: OPUS_VOICE_PAYLOAD_TYPE,
@@ -45,7 +46,6 @@ export class SdpProcessor {
     ];
 
     private static readonly kVideoCodecs: SdpCodec[] = [
-        /* TODO: Set AS as well! */
         {
             payload: H264_PAYLOAD_TYPE,
             codec: "H264",
@@ -186,6 +186,15 @@ export class SdpProcessor {
                         media.maxptime = media.fmtp["maxptime"];
                     }
                 }
+
+                if(window.detectedBrowser.name === "firefox") {
+                    /*
+                     * Firefox does not support multiple payload formats not switching between them.
+                     * This causes us only to add one, the primary, codec and hope for the best
+                     * (Opus Stereo and Mono mixing seem to work right now 11.2020)
+                     */
+                    break;
+                }
             }
 
             media.payloads = media.rtp.map(e => e.payload).join(" ");