Function WriteHostHeaderIfNot

library/cpp/neh/http_headers.h:49–53

        template <typename Port>
        void WriteHostHeaderIfNot(IOutputStream& out, TStringBuf host, Port port, TStringBuf headers) {
            if (!NNeh::NHttp::HasHostHeader(headers)) {
                NNeh::NHttp::WriteHostHeader(out, host, port);
            }
        }
    }
}