//New VersionExchange added to the collection:
protected override object SetUpMember(int index, object member)
{
VersionExchange ve = (VersionExchange)member;
//Set up an event handler to send outbound responses in all cases:
using (Synchronizer.Lock(ve.SyncRoot)) {
ve.Changed["SendVersionResponse"].Add(new PropertyEventHandler(SendVersionResponseHandler));
if (ve.SendVersionResponse != null)
{
Trace.WriteLine("VersionExchangeCollection.SetUpMember: VersionResponseMessage already set before event handler added: Sending response now.");
SendVersionResponse(ve, ve.SendVersionResponse);
}
}
//Send a request only if the VersionExchange is configured for it; Instructor nodes initiate the exchange.
if (ve.SendRequest)
{
VersionRequestMessage vrm = new VersionRequestMessage();
vrm.Group = new SingletonGroup(ve.RemoteParticipant);
vrm.Tags = new MessageTags();
vrm.Tags.BridgePriority = MessagePriority.Lowest;
m_Service.m_Sender.Send(vrm);
Trace.WriteLine("Sent VersionRequestMessage to Participant ID: " + ve.RemoteParticipant.Guid.ToString());
}
return(null); //No tag needed
}
private void SendVersionResponse(VersionExchange ve, VersionResponseMessage vrm)
{
vrm.Group = new SingletonGroup(ve.RemoteParticipant);
vrm.Tags = new MessageTags();
vrm.Tags.BridgePriority = MessagePriority.Lowest;
m_Service.m_Sender.Send(vrm);
Trace.WriteLine("Sent VersionResponseMessage to Participant ID: " + ve.RemoteParticipant.Guid.ToString());
}
//Send a VersionResponesMessage
private void SendVersionResponseHandler(object sender, PropertyEventArgs args)
{
VersionExchange ve = (VersionExchange)sender;
PropertyChangeEventArgs pcea = (PropertyChangeEventArgs)args;
if (pcea.NewValue != null)
{
VersionResponseMessage vrm = (VersionResponseMessage)(pcea.NewValue);
SendVersionResponse(ve, vrm);
}
}
protected override void TearDownMember(int index, object member, object tag)
{
VersionExchange ve = (VersionExchange)member;
ve.Changed["SendVersionResponse"].Remove(new PropertyEventHandler(SendVersionResponseHandler));
}