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Add Header Example
Below is the code from middleware.ts showing how to add/update/delete headers in a middleware (available since Next.js v13.0.0):
import { NextResponse } from 'next/server'import type { NextRequest } from 'next/server'
export default function middleware(request: NextRequest) { // Clone the request headers // You can modify them with headers API: https://developer.mozilla.org/en-US/docs/Web/API/Headers const requestHeaders = new Headers(request.headers)
// Add new request headers requestHeaders.set('x-hello-from-middleware1', 'hello') requestHeaders.set('x-hello-from-middleware2', 'world!')
// Update an existing request header requestHeaders.set('user-agent', 'New User Agent overriden by middleware!')
// Delete an existing request header requestHeaders.delete('x-from-client')
// You can also set request headers in NextResponse.rewrite return NextResponse.next({ request: { // New request headers headers: requestHeaders, }, })}Demo
https://edge-middleware-modify-request-header.vercel.app
How to Use
You can choose from one of the following two methods to use this repository:
One-Click Deploy
Deploy the example using Vercel:
Clone and Deploy
Execute create-next-app with pnpm to bootstrap the example:
pnpm create next-app --example https://github.com/vercel/examples/tree/main/edge-middleware/modify-request-header modify-request-headerNext, run Next.js in development mode:
pnpm devDeploy it to the cloud with Vercel (Documentation).
