Learn to add/update/delete request headers in a middleware.
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/Headersconst requestHeaders = new Headers(request.headers)// Add new request headersrequestHeaders.set('x-hello-from-middleware1', 'hello')requestHeaders.set('x-hello-from-middleware2', 'world!')// Update an existing request headerrequestHeaders.set('user-agent', 'New User Agent overriden by middleware!')// Delete an existing request headerrequestHeaders.delete('x-from-client')// You can also set request headers in NextResponse.rewritereturn NextResponse.next({request: {// New request headersheaders: requestHeaders,},})}
https://edge-middleware-modify-request-header.vercel.app
You can choose from one of the following two methods to use this repository:
Deploy the example using Vercel:
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-header
Next, run Next.js in development mode:
pnpm dev
Deploy it to the cloud with Vercel (Documentation).
Learn to add/update/delete request headers in a middleware.
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/Headersconst requestHeaders = new Headers(request.headers)// Add new request headersrequestHeaders.set('x-hello-from-middleware1', 'hello')requestHeaders.set('x-hello-from-middleware2', 'world!')// Update an existing request headerrequestHeaders.set('user-agent', 'New User Agent overriden by middleware!')// Delete an existing request headerrequestHeaders.delete('x-from-client')// You can also set request headers in NextResponse.rewritereturn NextResponse.next({request: {// New request headersheaders: requestHeaders,},})}
https://edge-middleware-modify-request-header.vercel.app
You can choose from one of the following two methods to use this repository:
Deploy the example using Vercel:
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-header
Next, run Next.js in development mode:
pnpm dev
Deploy it to the cloud with Vercel (Documentation).