How do i send a cookie from the middleware?

[magic flint]

this is my middleware

import { NextResponse } from "next/server";

export async function middleware(request: Request) {
  const authUrl = "http://localhost:5000/api/auth/checkAuth";

  try {
    const res = await fetch(authUrl);

    const data = await res.json();
    console.log(data);

    if (data.exists === true) {
      console.log(data.exists);
      return NextResponse.next();
    }
    return NextResponse.redirect(new URL("/login", request.url));
  } catch (err) {
    console.log(err);
    return new NextResponse("Internal Server Error", { status: 500 });
  }
}

export const config = {
  matcher: ["/"],
};

and this is my route in my express server

export const checkAuth = async (req, res) => {
  console.log(req.session.userId);
  if (!req.session.userId) {
    return res.status(400).json({ error: "You are not logged in" });
  }

  try {
    const user = await User.findById(req.session.userId);
    if (user) {
      return res.json({ exists: true, user });
    } else {
      return res.json({ exists: false });
    }
  } catch (err) {
    return res
      .status(500)
      .json({ error: "An error occurred while checking the user" });
  }
};

[unreal kelp]

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[magic flint]

the middleware is not able to send req.session.userId neither can i use relative paths

is there a way to fix that

[magic flint]

okk i got that fixed

can anyone just tell me