From 6e548deded288002bc976ef9db65fa9f99a70869 Mon Sep 17 00:00:00 2001
From: Juliusz Chroboczek <jch@irif.fr>
Date: Tue, 24 Nov 2020 23:22:24 +0100
Subject: [PATCH] Handle removetrack event on streamed videos.

Probably useless, but I'm supersticious.
---
 static/sfu.js | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/static/sfu.js b/static/sfu.js
index 0a5915c..4be42d8 100644
--- a/static/sfu.js
+++ b/static/sfu.js
@@ -902,13 +902,25 @@ async function addFileMedia(file) {
     stream.onaddtrack = function(e) {
         let t = e.track;
         c.pc.addTrack(t, stream);
-        t.onended = e => {
-            delUpMedia(c);
-        }
         c.labels[t.id] = t.kind;
         c.onstats = gotUpStats;
         c.setStatsInterval(2000);
     };
+    stream.onremovetrack = function(e) {
+        let t = e.track;
+        delete(c.labels[t.id]);
+
+        /** @type {RTCRtpSender} */
+        let sender;
+        c.pc.getSenders().forEach(s => {
+            if(s.track === t)
+                sender = s;
+        });
+        if(sender) {
+            c.pc.removeTrack(sender)
+        } else
+            console.warn('Removing unknown track');
+    };
     setMedia(c, true, video);
     video.play();
     setButtonsVisibility()