Transfer between Conquest-installations

Hi all,

In our department we have several Conquest installations between which we transfer selected examinations. For this purpose I have written a small lua-script exemplified below:

inputFile = 'patients.txt'
srcAet = 'server1'
destAet = 'server2'

nPatients = 0
startTime = os.time()
print('Started at ' .. os.date('%d-%m-%Y %H:%M:%S'))
print(os.date('%Y%m%d'))
currentDate = os.date('%Y%m%d')
twoYearsBack = os.date('%Y%m%d', os.time(os.date('*t')) - 2*31557600) --seconds in a year times two
print(twoYearsBack)

for line in io.lines(inputFile) do
  ptId = line
  cmd = newdicomobject()
  cmd.QueryRetrieveLevel = 'SERIES'
  cmd.PatientID = ptId
  cmd.StudyDate = twoYearsBack .. '-' .. currentDate
  cmd.SeriesDescription='PT*'
  dicommove(srcAet, destAet, cmd);

  nPatients = nPatients + 1
end

endTime = os.time()
print('Finished. Took ' .. os.difftime(endTime,startTime) .. ' s')

which transfer patients from patients.txtfrom server1 to server2 dating two years back. In principle I would like to further narrow down which types exams to transfer besides StudyDate, SeriesDescription and patientID on which I already impose restrictions. Is there any documentation somewhere exemplifying which methods newdicomobject (cmd in my case) contains? Could I e.g. select based on dicom tags in the images? How would I do so?

Furthermore, I am experiencing a significant slow-down on transfer speeds when transfering +20,000 images reducing the speed to below 1 image pr second. Is there good explanation for this behaviour?

Kind regards,

Thomas