P2p chat without group

Hello everybody,
I am playing with cirrus and would like to set up a p2p chat without netgroup. I have made it work for two peers but when I increase the number of peer I got some problem.
The design:
I am using one sendStream per peers (Each of them initialize the sendStream (sendStream.publish("media")) and send a message at a regular interval on this stream). sendStream.send("hello");
every 10 seconds, the peers register themselves on a amfphp service which keep track of their id (random string), their cirrus peerID and a timestamp.
at this point they also ask the service for a list of other connected peers (timestamp not older than 11 seconds)
for each new peers connected (based on the service) every other peers create a recvStream that connect to the sendStream of each other peers. In case the recvStream stop (which happen for some reason ?), I restart it recvStream.play("media").
The problem:
When the thirs peers connect, not all peers receive messages;
I also get a event.info.code == "NetStream.Play.PublishNotify" which I do not why (does not happen when only two peers are connected.
The solution?
I wonder whether it is because each sendStream can only handle one recvStream ?

The main reason is that NetGroup does not handle friends group
If I set a netgroup to send to my friends on facebook, I will successfully send them a message but in case they want to send a emssage back, they will send to everybody in the group which are not necessarely their friend (not all my friend are friends between each other). With netGroup I have to create a group for each node and these groups should not be writable by the node's friends.
imagien I have ten friends currently connected. it means I have to read from ten groups and I have my own group for me to write to them as a group. Furthermore if I want private message I have to send them through a specific channel.
It seems that in this case, a direct connection seems as good as netgroup, if not simpler.
Also since I want to udnerstand how things work, I would like to know whether a sending netstream can have more than one receiver.
I tried again with more simpler code and it seems that in case of flash peer to peer , netStream can only have one simulatenous suscriber. is it correct?
Does it means that NetStream.peerStreams is always of length 1 ?
the documentation does not talk about this and woudl like to know for sure.
If that is thes case I ll have to have a connection handler channel and maintain peer connection channel for each friends. In which case NetGroup might be easier, but still requires maintaing several netgroup and setting writing access to the node sendign message.
Note: the friend groups taht I want to setup is not intented to be used for chat (even if it could) but for data in a multiplayer game.
Thank you for your help,
Sincrely,
Oohazard

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2           xmlelement("root",
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