Action Script 3 P2P to Live example ( see more at http://mkifiles.ru/?p=1336)

Connections.as

package
{
    import states.LiveState;
    import states.PeerState;
    import states.state.IConnection;
    import flash.net.NetStream;
    public class Connections
    {
        private var peerState:PeerState;
        private var liveState:LiveState;
        private var state:IConnection;
        private var stateString:String;
        public static var STATE_PEER:String = 'peerState';
        public static var STATE_LIVE:String = 'liveState';
         
        public function Connections()
        {
            this.peerState = new PeerState(this);
            this.liveState = new LiveState(this);
            this.state = this.peerState;
            this.stateString = Connections.STATE_PEER;
        }
        
        public function setLiveState():void
        {
            this.state = this.liveState;
            this.stateString = Connections.STATE_LIVE;
        }
        
        public function setP2PState():void
        {
            this.state = this.peerState;
            this.stateString = Connections.STATE_PEER;
        }

        public function connect():void
        {
            this.state.connect();
        }

        /*...*/

    }
}

IConnection.as

package states.state
{
    import flash.net.NetConnection;
    import flash.net.NetStream;
    
    public interface IConnection
    {
        function connect():void;
        function getNetConnect():NetConnection;
        function startOutgoingStream():void;
        function startIncomingStream(peerID:String):void;
        function getOutgoingStream():NetStream;
        function getIncomingStream():NetStream;
        function disconnect():void;
    }
}

LiveState.as

package states
{
    import states.state.IConnection;
    import flash.net.NetConnection;
    import flash.net.NetStream;
    import flash.events.NetStatusEvent;
    
    public class LiveState implements IConnection
    {
        private var URL_LIVE:String = "";
        private var netConnection:NetConnection = null;
        private var _conn:Connections = null;
        public var outgoingStream:NetStream = null;
        public var incomingStream:NetStream = null;
        
        public function LiveState(conn:Connections):void
        {
            _conn = conn
            URL_LIVE = 'rtmp://your_server/live';
        } 
        
        public function connect():void
        {
            netConnection = new NetConnection();
            netConnection.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
            netConnection.connect(URL_LIVE);
        }
        
        /*...*/

    }
}

PeerState.as

package states
{
    import states.state.IConnection;
    import flash.net.NetConnection;
    import flash.net.NetStream;
    import flash.events.NetStatusEvent;
    
    public class PeerState implements IConnection
    {
        private var URL_P2P:String = "";
        private var DEVKEY:String = "";
        private var netConnection:NetConnection = null;
        private var _conn:Connections = null;
        public var outgoingStream:NetStream = null;
        public var incomingStream:NetStream = null;
        
        public function PeerState(conn:Connections):void
        {
            _conn = conn
            URL_P2P = 'rtmfp://your_server/multicast';
            DEVKEY = '';
        } 
        
        public function connect():void
        {
            netConnection = new NetConnection();
            netConnection.addEventListener(NetStatusEvent.NET_STATUS, /*...*/);
            netConnection.connect(URL_P2P, DEVKEY);
        }
        
        /*...*/

    }
}

use.as

public var connections:Connections;

// Подключаемся по-умолчанию к p2p
connections = new Connections();
connections.connect();

// Переключаемся на live, завершая текущее соединение
connections.disconnect();
connections.setLiveState();
connections.connect();