ssl_ca_file
Description:
Warning: ssl_ca_file is deprecated.
File containing SSL CA certificates.
Note:
use ssl_use_system_ca_file, or else tls_database with a TlsFileDatabase (which allows you to do explicit error handling).
If the specified file does not exist or cannot be read, then libsoup will print a warning, and then behave as though it had read in a empty CA file, meaning that all SSL certificates will be considered invalid.