## hide/remove request headers
{%- set req_hdr_dict = j2cfg.request_headers or {} -%}
{%- for h, v in req_hdr_dict.items() %}
{#- TODO: precise quotation #}
grpc_set_header  {{ h }}  {{ v.__repr__() }};
{%- endfor %}

## hide response headers
{%- set resp_hdr_dict = j2cfg.response_headers or {} -%}
{%- set resp_hdr_list = resp_hdr_dict | dict_keys -%}
{%- for h in resp_hdr_list %}
grpc_hide_header  {{ h }};
{%- endfor %}