ngx-http-log-json: variables

[fooinha]

module: variable $http_log_json_req_headers;

Creates a json object with all request headers.

Example:

"req": {
    "headers": {
        "Host": "localhost",
            "User-Agent": "curl/7.52.1",
            "Accept": "*/*"
    }
}

[fooinha]

8 has better implementation ...