internal static PeerApplication ConvertPEER_APPLICATIONToPeerApplication(PEER_APPLICATION pa)
{
byte[] data = null;
if (pa.data.cbData != 0)
{
data = new byte[pa.data.cbData];
Marshal.Copy(pa.data.pbData, data, 0, (int)pa.data.cbData);
}
return(new PeerApplication(ConvertGUIDToGuid(pa.guid),
Marshal.PtrToStringUni(pa.pwzDescription),
data,
null, null, PeerScope.None));
}
internal static PeerApplication ConvertPEER_APPLICATIONToPeerApplication(PEER_APPLICATION pa)
{
byte[] data = null;
if (pa.data.cbData != 0){
data = new byte[pa.data.cbData];
Marshal.Copy(pa.data.pbData, data, 0, (int)pa.data.cbData);
}
return new PeerApplication( ConvertGUIDToGuid(pa.guid),
Marshal.PtrToStringUni(pa.pwzDescription),
data,
null, null, PeerScope.None);
}
private void ApplicationChangedCallback(object state, bool timedOut)
{
SafeCollabData eventData = null;
int errorCode = 0;
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "ApplicationChangedCallback() called.");
if (m_Disposed)
{
return;
}
while (true)
{
ApplicationChangedEventArgs appChangedArgs = null;
//
// Get the event data for the fired event
//
try{
lock (LockAppChangedEvent)
{
if (m_safeAppChangedEvent.IsInvalid)
{
return;
}
errorCode = UnsafeCollabNativeMethods.PeerCollabGetEventData(m_safeAppChangedEvent,
out eventData);
}
if (errorCode == UnsafeCollabReturnCodes.PEER_S_NO_EVENT_DATA)
{
break;
}
else if (errorCode != 0)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Error, 0, "PeerCollabGetEventData returned with errorcode {0}", errorCode);
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Collab_GetApplicationChangedDataFailed), errorCode);
}
PEER_COLLAB_EVENT_DATA ped = (PEER_COLLAB_EVENT_DATA)Marshal.PtrToStructure(eventData.DangerousGetHandle(),
typeof(PEER_COLLAB_EVENT_DATA));
if (ped.eventType == PeerCollabEventType.EndPointApplicationChanged)
{
PEER_EVENT_APPLICATION_CHANGED_DATA appData = ped.applicationChangedData;
PEER_APPLICATION pa = (PEER_APPLICATION)Marshal.PtrToStructure(appData.pApplication, typeof(PEER_APPLICATION));
PeerApplication peerApplication = CollaborationHelperFunctions.ConvertPEER_APPLICATIONToPeerApplication(pa);;
//
// Check if the Guid of the fired app is indeed our guid
//
if (Guid.Equals(m_id, peerApplication.Id))
{
PeerContact peerContact = null;
PeerEndPoint peerEndPoint = null;
if (appData.pContact != IntPtr.Zero)
{
PEER_CONTACT pc = (PEER_CONTACT)Marshal.PtrToStructure(appData.pContact, typeof(PEER_CONTACT));
peerContact = CollaborationHelperFunctions.ConvertPEER_CONTACTToPeerContact(pc);
}
if (appData.pEndPoint != IntPtr.Zero)
{
PEER_ENDPOINT pe = (PEER_ENDPOINT)Marshal.PtrToStructure(appData.pEndPoint, typeof(PEER_ENDPOINT));
peerEndPoint = CollaborationHelperFunctions.ConvertPEER_ENDPOINTToPeerEndPoint(pe);
}
appChangedArgs = new ApplicationChangedEventArgs(peerEndPoint,
peerContact,
appData.changeType,
peerApplication);
}
}
}
finally{
if (eventData != null)
{
eventData.Dispose();
}
}
//
// Fire the callback with the marshalled event args data
//
if (appChangedArgs != null)
{
OnApplicationChanged(appChangedArgs);
}
}
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Leaving ApplicationChangedCallback().");
}
