assert_ssl_client_error_match(false, context: ctx) do |client_ctx|
      key = "#{CERT_PATH}/client.key"
      crt = "#{CERT_PATH}/client.crt"
      client_ctx.key = OpenSSL::PKey::RSA.new File.read(key)
      client_ctx.cert = OpenSSL::X509::Certificate.new File.read(crt)