open-consul/ui-v2/app/utils/http/consul.js

// TODO: Need to make all these headers capital case
export const HEADERS_NAMESPACE = 'X-Consul-Namespace';
export const HEADERS_DATACENTER = 'x-consul-datacenter';
export const HEADERS_INDEX = 'x-consul-index';
export const HEADERS_DIGEST = 'x-consul-contenthash';
//
export const HEADERS_SYMBOL = '__consul_ui_http_headers__';