CORS. Add support for OPTIONS requests.

internal/api/api.go

@@ -211,7 +211,9 @@ func middlewareCORS(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Access-Control-Allow-Origin", "*")
 		w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
-		w.Header().Set("Access-Control-Allow-Headers", "Authorization")
+		w.Header().Set("Access-Control-Allow-Headers", "Authorization, X-PINGOTHER, Content-Type")
+
+
 		next.ServeHTTP(w, r)
 	})
 }

internal/webrtc/server.go

@@ -49,6 +49,9 @@ func syncHandler(w http.ResponseWriter, r *http.Request) {
 			http.Error(w, "", http.StatusBadRequest)
 		}
 
+	case "OPTIONS":
+		w.WriteHeader(http.StatusNoContent)
+
 	default:
 		http.Error(w, "", http.StatusMethodNotAllowed)
 	}