/// <summary>
/// Called when the base class receives a LillTek duplex session connection
/// attempt from the router. Session oriented derived classes must implement
/// this to accept a new channel or route the message to an existing channel.
/// </summary>
/// <param name="msg">The session opening <see cref="DuplexSessionMsg" />.</param>
protected override void OnSessionConnect(DuplexSessionMsg msg)
{
InputSessionChannel newChannel = null;
string sessionID = msg._SessionID.ToString("D");
if (base.State != CommunicationState.Opened)
{
return;
}
using (TimedLock.Lock(this))
{
// Ignore session create messages that may to an existing channel.
if (base.Channels.ContainsKey(sessionID))
{
return;
}
// Create a new channel for the session.
newChannel = new InputSessionChannel(this, new EndpointAddress(this.Uri), sessionID, msg.Session);
AddChannel(newChannel);
}
// Do this outside of the lock just to be safe
if (newChannel != null)
{
base.OnChannelCreated(newChannel);
}
}
/// <summary>
/// Called when the message router receives a LillTek message.
/// </summary>
/// <param name="msg">The received message.</param>
private void OnReceive(Msg msg)
{
try
{
if (sessionMode)
{
DuplexSessionMsg duplexMsg = msg as DuplexSessionMsg;
// Handle client session connection attempts.
if (duplexMsg != null)
{
OnSessionConnect(duplexMsg);
return;
}
}
else
{
// Handle encapsulated WCF messages.
WcfEnvelopeMsg envelopeMsg = msg as WcfEnvelopeMsg;
Message message;
if (envelopeMsg == null)
{
return; // Discard non-envelope messages
}
message = DecodeMessage(envelopeMsg);
// Let the derived listener decide what to do with the message.
OnMessageReceived(message, envelopeMsg);
}
}
catch (Exception e)
{
SysLog.LogException(e);
}
}
/// <summary> /// Called when the base class receives a LillTek duplex session connection /// attempt from the router. Session oriented derived classes must implement /// this to accept a new channel or route the message to an existing channel. /// </summary> /// <param name="msg">The session opening <see cref="DuplexSessionMsg" />.</param> protected abstract void OnSessionConnect(DuplexSessionMsg msg);
/// <summary>
/// Called when the base class receives a LillTek duplex session connection
/// attempt from the router. Session oriented derived classes must implement
/// this to accept a new channel or route the message to an existing channel.
/// </summary>
/// <param name="msg">The session opening <see cref="DuplexSessionMsg" />.</param>
protected override void OnSessionConnect(DuplexSessionMsg msg)
{
throw new InvalidOperationException();
}
/// <summary>
/// Called when the base class receives a LillTek duplex session connection
/// attempt from the router. Session oriented derived classes must implement
/// this to accept a new channel or route the message to an existing channel.
/// </summary>
/// <param name="msg">The session opening <see cref="DuplexSessionMsg" />.</param>
protected override void OnSessionConnect(DuplexSessionMsg msg)
{
}
