Added limit for maximum number of users in a single room

server/config/config.example.js

@@ -247,6 +247,8 @@ module.exports =
 	// When truthy, the room will be open to all users when as long as there
 	// are allready users in the room
 	activateOnHostJoin : true,
+	// When set, maxUsersPerRoom defines how many users can join a single room. If not set, there is not limit.
+	// maxUsersPerRoom    : 20,
 	// Mediasoup settings
 	mediasoup          :
 	{

server/lib/Room.js

@@ -177,6 +177,9 @@ class Room extends EventEmitter
 			peer.roles.some((role) => accessFromRoles.BYPASS_ROOM_LOCK.includes(role))
 		)
 			this._peerJoining(peer);
+		else if ('maxUsersPerRoom' in config &&(this._getJoinedPeers().length + this._lobby.peerList().length) >= config.maxUsersPerRoom) {
+			this._handleOverRoomLimit(peer);
+		}
 		else if (this._locked)
 			this._parkPeer(peer);
 		else
@@ -188,6 +191,11 @@ class Room extends EventEmitter
 		}
 	}
 
+	_handleOverRoomLimit(peer)
+	{
+		this._notification(peer.socket, 'overRoomLimit');
+	}
+
 	_handleGuest(peer)
 	{
 		if (config.activateOnHostJoin && !this.checkEmpty())