default_verify_callback (HTTPClient::SSLConfig)

    # File lib/httpclient/ssl_config.rb, line 270
        def default_verify_callback(is_ok, ctx)
          if $DEBUG
            puts "#{ is_ok ? 'ok' : 'ng' }: #{ctx.current_cert.subject}"
          end
          if !is_ok
            depth = ctx.error_depth
            code = ctx.error
            msg = ctx.error_string
            STDERR.puts "at depth #{depth} - #{code}: #{msg}"
          end
          is_ok
        end