From d00d5d3390004f29f2be96a370a1ac5a0015cc20 Mon Sep 17 00:00:00 2001
From: Gabe Kangas <gabek@real-ity.com>
Date: Wed, 17 Jun 2020 21:02:16 -0700
Subject: [PATCH] Disallow caching of hls playlists client-side

---
 main.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/main.go b/main.go
index e485c6353..ddf0717cc 100644
--- a/main.go
+++ b/main.go
@@ -63,6 +63,7 @@ func startChatServer() {
 		if path.Ext(r.URL.Path) == ".m3u8" {
 			clientID := getClientIDFromRequest(r)
 			stats.SetClientActive(clientID)
+			disableCache(&w)
 		}
 	})
 
@@ -77,6 +78,11 @@ func enableCors(w *http.ResponseWriter) {
 	(*w).Header().Set("Access-Control-Allow-Origin", "*")
 }
 
+func disableCache(w *http.ResponseWriter) {
+	(*w).Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
+	(*w).Header().Set("Expires", "0")
+}
+
 func getStatus(w http.ResponseWriter, r *http.Request) {
 	enableCors(&w)