= cowboy_req:set_resp_headers(3) == Name cowboy_req:set_resp_headers - Set several response headers == Description [source,erlang] ---- set_resp_headers(Headers, Req) -> cowboy_req:req() Headers :: cowboy:http_headers() Req :: cowboy_req:req() ---- Add all given headers to the response headers. If a given header key already exists in the currently set response-header map the given value will overwrite the old. == Arguments Headers:: A map with keys and values as binary strings. Key values should be lowercase to function properly. Req:: The Req object. == Return value A request object updated with the given response headers. == Changelog * *2.0*: Function introduced. == Examples .Get all response headers [source,erlang] ---- Req1 = cowboy_req:set_resp_headers(#{<<"x-header-test">> => <<"1">>}, Req0). ---- == See also link:man:cowboy_req(3)[cowboy_req(3)], link:man:cowboy_req:resp_headers(3)[cowboy_req:resp_headers(3)]