$self->{ua}->ssl_opts(SSL_ca_file => $self->{ca_cert_file})
                if $self->{ca_cert_file};
            $self->{ua}->ssl_opts(SSL_ca_path => $self->{ca_cert_dir})
                if $self->{ca_cert_dir};
            $self->{ua}->ssl_opts(SSL_cert_file => $self->{SSL_cert_file})
                if $self->{SSL_cert_file};
            $self->{ua}->ssl_opts(SSL_key_file => $self->{SSL_key_file})
                if $self->{SSL_key_file};