/// <summary>
/// Connects to a remote shared object on the server through the specified connection. Use this method after
/// issuing SharedObject.GetRemote(...). After a successful connection, the sync event is dispatched.
/// </summary>
/// <param name="connection">A NetConnection object (such as one used to communicate with Flash Media Server) that is using the Real-Time Messaging Protocol (RTMP).</param>
/// <param name="parameters">Parameters.</param>
public void Connect(NetConnection connection, string parameters)
{
if (_initialSyncReceived)
{
throw new InvalidOperationException("SharedObject already connected");
}
ValidationUtils.ArgumentNotNull(connection, "connection");
ValidationUtils.ArgumentNotNull(connection.Uri, "connection");
ValidationUtils.ArgumentConditionTrue(connection.Uri.Scheme == "rtmp", "connection", "NetConnection object must use the Real-Time Messaging Protocol (RTMP)");
ValidationUtils.ArgumentConditionTrue(connection.Connected, "connection", "NetConnection object must be connected");
_connection = connection;
_initialSyncReceived = false;
dotFlex.Messaging.Rtmp.SO.SharedObjectMessage message;
if (connection.ObjectEncoding == ObjectEncoding.AMF0)
{
message = new dotFlex.Messaging.Rtmp.SO.SharedObjectMessage(_name, _version, _persistentSO);
}
else
{
message = new dotFlex.Messaging.Rtmp.SO.FlexSharedObjectMessage(_name, _version, _persistentSO);
}
dotFlex.Messaging.Rtmp.SO.SharedObjectEvent evt = new dotFlex.Messaging.Rtmp.SO.SharedObjectEvent(dotFlex.Messaging.Rtmp.SO.SharedObjectEventType.SERVER_CONNECT, null, null);
message.AddEvent(evt);
_connection.NetConnectionClient.Write(message);
}
/// <summary>
/// Closes the connection between a remote shared object and the server.
/// </summary>
public void Close()
{
if (_initialSyncReceived && _connection != null && _connection.Connected)
{
dotFlex.Messaging.Rtmp.SO.SharedObjectMessage message;
if (_connection.ObjectEncoding == ObjectEncoding.AMF0)
{
message = new dotFlex.Messaging.Rtmp.SO.SharedObjectMessage(_name, _version, _persistentSO);
}
else
{
message = new dotFlex.Messaging.Rtmp.SO.FlexSharedObjectMessage(_name, _version, _persistentSO);
}
dotFlex.Messaging.Rtmp.SO.SharedObjectEvent evt = new dotFlex.Messaging.Rtmp.SO.SharedObjectEvent(dotFlex.Messaging.Rtmp.SO.SharedObjectEventType.SERVER_DISCONNECT, null, null);
message.AddEvent(evt);
_connection.NetConnectionClient.Write(message);
// clear collections
base.RemoveAttributes();
_ownerMessage.Events.Clear();
}
_initialSyncReceived = false;
}
/// <summary>
/// Send update notification over data channel of RTMP connection
/// </summary>
private void SendUpdates()
{
int currentVersion = _version.Value;
bool persist = this.IsPersistentObject;
//Get read-only version of events
ConcurrentLinkedQueue<ISharedObjectEvent> events = new ConcurrentLinkedQueue<ISharedObjectEvent>(_ownerMessage.Events);
//clear out previous events
_ownerMessage.Events.Clear();
if (events.Count != 0)
{
//Send update to "owner" of this update request
if(_source != null)
{
RtmpConnection connection = _source as RtmpConnection;
// Only send updates when issued through RTMP request
RtmpChannel channel = connection.GetChannel((byte)3);
// Send update to "owner" of this update request
SharedObjectMessage syncOwner;
if (connection.ObjectEncoding == ObjectEncoding.AMF0)
syncOwner = new SharedObjectMessage(null, _name, currentVersion, persist);
else
syncOwner = new FlexSharedObjectMessage(null, _name, currentVersion, persist);
syncOwner.AddEvents(events);
if(channel != null)
{
channel.Write(syncOwner);
}
else
{
log.Warn(__Res.GetString(__Res.Channel_NotFound));
}
}
}
//Clear owner events
events.Clear();
//Get read-only version of sync events
events.AddRange(_syncEvents);
//Clear out previous events
_syncEvents.Clear();
if (events.Count != 0)
{
// Synchronize updates with all registered clients of this shared
foreach(IEventListener listener in _listeners)
{
if(listener == _source)
{
// Don't re-send update to active client
continue;
}
if(!(listener is RtmpConnection))
{
log.Warn(__Res.GetString(__Res.SharedObject_SyncConnError));
continue;
}
// Create a new sync message for every client to avoid
// concurrent access through multiple threads
// TODO: perhaps we could cache the generated message
RtmpConnection connection = listener as RtmpConnection;
SharedObjectMessage syncMessage;
if (connection.ObjectEncoding == ObjectEncoding.AMF0)
syncMessage = new SharedObjectMessage(null, _name, currentVersion, persist);
else
syncMessage = new FlexSharedObjectMessage(null, _name, currentVersion, persist);
syncMessage.AddEvents(events);
RtmpChannel channel = connection.GetChannel((byte)3);
log.Debug(__Res.GetString(__Res.SharedObject_Sync, channel));
channel.Write(syncMessage);
}
}
}
static ISharedObjectMessage DecodeFlexSharedObject(ByteBuffer stream)
{
// Unknown byte, always 0?
stream.Skip(1);
RtmpReader reader = new RtmpReader(stream);
string name = reader.ReadString();
// Read version of SO to modify
int version = reader.ReadInt32();
// Read persistence informations
bool persistent = reader.ReadInt32() == 2;
// Skip unknown bytes
reader.ReadInt32();
SharedObjectMessage so = new FlexSharedObjectMessage(null, name, version, persistent);
DecodeSharedObject(so, stream, reader);
return so;
}
private static void SendSOPersistenceMismatch(RtmpConnection connection, string name, bool persistent)
{
SharedObjectMessage msg;
if (connection.ObjectEncoding == ObjectEncoding.AMF0)
msg = new SharedObjectMessage(name, 0, persistent);
else
msg = new FlexSharedObjectMessage(name, 0, persistent);
msg.AddEvent(new SharedObjectEvent(SharedObjectEventType.CLIENT_STATUS, StatusASO.SO_PERSISTENCE_MISMATCH, "error"));
connection.GetChannel((byte)3).Write(msg);
}
private static void SendSOCreationFailed(RtmpConnection connection, string name, bool persistent)
{
SharedObjectMessage msg;
if (connection.ObjectEncoding == ObjectEncoding.AMF0)
msg = new SharedObjectMessage(name, 0, persistent);
else
msg = new FlexSharedObjectMessage(name, 0, persistent);
msg.AddEvent(new SharedObjectEvent(SharedObjectEventType.CLIENT_STATUS, StatusASO.SO_CREATION_FAILED, "error"));
connection.GetChannel((byte)3).Write(msg);
}
/// <summary>
/// Send update notification over data channel of RTMP connection
/// </summary>
private void SendUpdates()
{
int currentVersion = _version.Value;
bool persist = this.IsPersistentObject;
//Get read-only version of events
ConcurrentLinkedQueue <ISharedObjectEvent> events = new ConcurrentLinkedQueue <ISharedObjectEvent>(_ownerMessage.Events);
//clear out previous events
_ownerMessage.Events.Clear();
if (events.Count != 0)
{
//Send update to "owner" of this update request
if (_source != null)
{
RtmpConnection connection = _source as RtmpConnection;
// Only send updates when issued through RTMP request
RtmpChannel channel = connection.GetChannel((byte)3);
// Send update to "owner" of this update request
SharedObjectMessage syncOwner;
if (connection.ObjectEncoding == ObjectEncoding.AMF0)
{
syncOwner = new SharedObjectMessage(null, _name, currentVersion, persist);
}
else
{
syncOwner = new FlexSharedObjectMessage(null, _name, currentVersion, persist);
}
syncOwner.AddEvents(events);
if (channel != null)
{
channel.Write(syncOwner);
}
else
{
log.Warn(__Res.GetString(__Res.Channel_NotFound));
}
}
}
//Clear owner events
events.Clear();
//Get read-only version of sync events
events.AddRange(_syncEvents);
//Clear out previous events
_syncEvents.Clear();
if (events.Count != 0)
{
// Synchronize updates with all registered clients of this shared
foreach (IEventListener listener in _listeners)
{
if (listener == _source)
{
// Don't re-send update to active client
continue;
}
if (!(listener is RtmpConnection))
{
log.Warn(__Res.GetString(__Res.SharedObject_SyncConnError));
continue;
}
// Create a new sync message for every client to avoid
// concurrent access through multiple threads
// TODO: perhaps we could cache the generated message
RtmpConnection connection = listener as RtmpConnection;
SharedObjectMessage syncMessage;
if (connection.ObjectEncoding == ObjectEncoding.AMF0)
{
syncMessage = new SharedObjectMessage(null, _name, currentVersion, persist);
}
else
{
syncMessage = new FlexSharedObjectMessage(null, _name, currentVersion, persist);
}
syncMessage.AddEvents(events);
RtmpChannel channel = connection.GetChannel((byte)3);
log.Debug(__Res.GetString(__Res.SharedObject_Sync, channel));
channel.Write(syncMessage);
}
}
}
