Dynamic links url dependent on next headers?

const getUrl = () => {
    const headersList = headers();
    const domain = headersList.get("host");


    return `http://${domain}/api/trpc`;
};

export const api = createTRPCProxyClient<AppRouter>({
    transformer,
    links: [
        unstable_httpBatchStreamLink({
            url: getUrl(),
            headers() {
                const heads = new Map(headers());
                heads.set("x-trpc-source", "server");

                return Object.fromEntries(heads);
            },
        }),
    ],
});