public bool SubscribeCOVRequest(BacnetAddress adr, BacnetObjectId object_id, uint subscribe_id, bool cancel, bool issue_confirmed_notifications, uint lifetime, byte invoke_id = 0)
{
using (BacnetAsyncResult result = (BacnetAsyncResult)BeginSubscribeCOVRequest(adr, object_id, subscribe_id, cancel, issue_confirmed_notifications, lifetime, true, invoke_id))
{
for (int r = 0; r < m_retries; r++)
{
if (result.WaitForDone(m_timeout))
{
Exception ex;
EndSubscribeCOVRequest(result, out ex);
if (ex != null) throw ex;
else return true;
}
if (r < (m_retries - 1))
result.Resend();
}
}
return false;
}