nextjs - 💡(How to fix) Fix Proxy set cookie not work [4 comments, 4 participants]

export async function proxy(request: NextRequest) {
	// Check if there is any supported locale in the pathname
	const { pathname } = request.nextUrl;
	if (pathname.startsWith("/api/")) {
		const res = await updateSession(request);

		console.log(res.cookies);

		return res;
	}

	const segments = pathname.split("/").filter(Boolean);

	if (
		segments.length > 1 &&
		(segments[1].startsWith("login") || segments[1].startsWith("register"))
	) {
		const session = await auth.api.getSession({
			headers: request.headers,
		});

		if (session?.session) {
			request.nextUrl.pathname = `/${segments[0]}`;
			return NextResponse.redirect(request.nextUrl);
		}
	}

	const pathnameHasLocale = locales.some(
		(locale) => pathname.startsWith(`/${locale}/`) || pathname === `/${locale}`
	);

	if (pathnameHasLocale) return;

	// Redirect if there is no locale
	const locale = getLocale(request);
	request.nextUrl.pathname = `/${locale}${pathname}`;
	// e.g. incoming request is /products
	// The new URL is now /en-US/products
	return NextResponse.redirect(request.nextUrl);
}

export const config = {
	matcher: [
		/*
		 * Match all request paths except for the ones starting with:
		 * - _next/static (static files)
		 * - _next/image (image optimization files)
		 * - favicon.ico (favicon file)
		 * - api/claims (claims API endpoint)
		 * - api/refresh-token (token refresh endpoint)
		 * Feel free to modify this pattern to include more paths.
		 */
		"/((?!_next/static|_next/image|favicon.ico|api/claims|api/refresh-token|.*\\.(?:svg|png|jpg|jpeg|gif|webp)$).*)",
	],
};

---

import { NextResponse, type NextRequest } from "next/server";
import { fetchHelpers } from "./common";

export async function updateSession(request: NextRequest) {
	let refreshResponse = NextResponse.next({
		request,
	});

	// With Fluid compute, don't put this client in a global environment
	// variable. Always create a new one on each request.
	await fetchHelpers.get("/claims", {
		...request,
		getCookies() {
			return request.cookies.getAll();
		},
		setCookies(cookiesToSet) {
			cookiesToSet.forEach(({ name, value }) =>
				request.cookies.set(name, value)
			);
			refreshResponse = NextResponse.next({
				request,
			});
			cookiesToSet.forEach(({ name, value, options }) => {
				refreshResponse.cookies.set(name, value, options);
			});
		},
	});

	return refreshResponse;
}

---

Operating System:
  Platform: win32
  Arch: x64
  Version: Windows 10 Pro
  Available memory (MB): 32596
  Available CPU cores: 12
Binaries:
  Node: 22.20.0
  npm: 10.9.2
  Yarn: 1.22.22
  pnpm: 10.13.1
Relevant Packages:
  next: 16.0.7
recommended!
  eslint-config-next: N/A
  react: 19.2.0
  react-dom: 19.2.0
  typescript: 5.9.3
Next.js Config:
  output: N/A