Various ramblings-on, mostly about Red5

07 Apr 09 On-demand room / scope creation

I am not sure how or if FMS provides a means for dynamic rooms, but Red5 does and I will try to explain how to use it below. For the following example, you should expect the following url – rtmp://localhost/myapp/room is being used. The method below is an overridden super class method from the Red5 application adapter. The example places a client into an id based “chat” room; the id algorithm could be anything you desire and is not fixed. I have used this block in a couple projects, one of which used an encrypted room and id portion and its url looked similar to this – rtmp://localhost/myapp/29c8109abd29e

	public boolean roomJoin(IClient client, IScope scope) {
		log.debug("roomJoin - client id: {} scope: {}", client.getId(), scope);
		IConnection conn = Red5.getConnectionLocal();

		String scopeName = scope.getName();
		log.debug("Scope name: {}", scopeName);
		//check for "application" scope
		if ("myapp".equals(scopeName)) {
			log.debug("Connection already connected to app scope");
		} else if (conn.hasAttribute("")) {
			//client is already in a room
			log.debug("Connection already connected to room scope");
		} else {
			//the room name
			String roomName = scopeName;						
			//set flag
			conn.setAttribute("", true);
			//get app scope
			IScope appScope = scope.getParent();
			//handle at room level
			if ("room".equals(roomName)) {
				//lookup room (top level)
				IScope roomScope = ScopeUtils.resolveScope(appScope, roomName);
				if (roomScope == null) {
					if (appScope.createChildScope(roomName)) {
						log.debug("Room {} created", roomName);
						roomScope = appScope.getScope(roomName);
					} else {
						log.warn("Room {} was not created", roomName);
				} else {
					log.debug("Room scope {} was found", roomName);
				//get the next room identifier
				String chatId = getNextChatId();
				//room for chat id
				IScope chatScope = ScopeUtils.resolveScope(roomScope, chatId);
				if (chatScope == null) {
					if (roomScope.createChildScope(chatId)) {
						log.debug("Chat scope {} created", chatId);
						chatScope = roomScope.getScope(chatId);
					} else {
						log.warn("Chat scope {} was not created", chatId);
				} else {
					log.debug("Chat scope {} was found", chatId);
				//send the actual join
				return roomJoin(client, chatScope);
			} else {
				return false;
		return super.roomJoin(client, scope);

After this block is executed, your client would be connected to something like this – rtmp://localhost/myapp/room/1001 without having to create any additional NetConnections. The method “getNextChatId()” is meant to provide a chat room id, based on whatever criteria you would like.

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12 Sep 08 RTMP load tester

I want to let everyone know about a simple RTMP load testing tool that I wrote in flex. Its really simple and allows you to rip a stream from either FMS or Red5 as quickly as possible. If you find it useful or want to add to it, let me know.

The source link is for the latest version in which I have started adding shared object testing; I could use some assistance with that part if any of you have time. The bin link is to the “old” version.

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