I see. I will have to think about a longer term solution. But for the short term, the simplest solution is to have your code directly call the appropriate curl_easy_setopt functions directly. See occurlfunctions.c:ocset_ssl to see what needs to be set. =Dennis Heimbigner Unidata Ticket Details =================== Ticket ID: KMS-124565 Department: Support netCDF Priority: Normal Status: Closed