feat: Set signaling server federation feature as mandatory

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

Author: danxuliu

lib/Signaling/Manager.php

@@ -36,6 +36,7 @@ public function isCompatibleSignalingServer(IResponse $response): bool {
 		$features = explode(',', $featureHeader);
 		$features = array_map('trim', $features);
 		return in_array('audio-video-permissions', $features, true)
+			&& in_array('federation', $features, true)
 			&& in_array('incall-all', $features, true)
 			&& in_array('hello-v2', $features, true)
 			&& in_array('switchto', $features, true);

src/utils/signaling.js

@@ -1115,6 +1115,7 @@ Signaling.Standalone.prototype.helloResponseReceived = function(data) {
 
 	if (!this.settings.helloAuthParams.internal
 			&& (!this.hasFeature('audio-video-permissions')
+				|| !this.hasFeature('federation')
 				|| !this.hasFeature('incall-all')
 				|| !this.hasFeature('switchto'))) {
 		showError(