How to set headers?

hi, i have tried 3 options to set headers, none of them works, how to set headers? thanks

11 middleware2  const requestHeaders = new Headers(request.headers);3  if (url === '/sitemap.xml' || url === '/sitemap-0.xml' || url === '/sitemap-1.xml' || url === '/sitemap-2.xml') {4    requestHeaders.set('X-Robots-Tag', 'noindex, follow');5    return NextResponse.next({6      request: {7        headers: requestHeaders,8      },9    });10  }

12  middleware2  if (url === '/sitemap.xml' || url === '/sitemap-0.xml' || url === '/sitemap-1.xml' || url === '/sitemap-2.xml') {3    const response = NextResponse.next();4    response.headers.set('X-Robots-Tag', 'noindex, follow');5    return response;6  }

13 next.config2  async headers() {3    return [4      {5        source: '/sitemap.xml',6        headers: [7          { key: 'X-Robots-Tag', value: 'noindex, follow' },8        ],9      },10      {11        source: '/sitemap-0.xml',12        headers: [13          { key: 'X-Robots-Tag', value: 'noindex, follow' },14        ],15      },16      {17        source: '/sitemap-1.xml',18        headers: [19          { key: 'X-Robots-Tag', value: 'noindex, follow' },20        ],21      },22      {23        source: '/sitemap-2.xml',24        headers: [25          { key: 'X-Robots-Tag', value: 'noindex, follow' },26        ],27      },28    ];29  },

How are you generating Sitemap.xml and what is the file path? you can also set the header directly when generating the files:

1export async function getServerSideProps(context) {23  // set HTTP header4  context.res.setHeader('X-Robots-Tag', 'noindex, follow')56  return {7    props: {}, // will be passed to the page component as props8  }9}

https://nextjs.org/docs/app/api-reference/file-conventions/metadata/sitemap

Hi , you can use the headers configuration in the vercel.json, as follows:

1{2  "headers": [3    {4      "source": "/sitemap.xml",5      "headers": [6        {7          "key": "X-Robots-Tag",8          "value": "noindex, follow"9        }10      ]11    }12  ]13}14

This configuration will work as long as the /sitemap.xml route returns a valid response.

Here's the output on my Next.js website:

X-Robots-Tag header

I hope this was helpful.

hi, thanks, it worked 👍