CertFile resource

Gives the name of a file containing a client certificate, which will be provided to the host during TLS negotiation.

OpenSSL
With OpenSSL, the default file format is PEM; it can be overridden by the certFileType resource. The private key for the certificate is specified by the keyFile resource. If the chainFile resource is specified, it overrides certFile.

macOS
On macOS, the file must be in PKCS12 format.

Windows
Not supported.