Redirect the viewer to a new URL
The following example function generates a response to redirect the viewer to a
country-specific URL when the request comes from within a particular country. This
function relies on the value of the CloudFront-Viewer-Country
header to
determine the viewer’s country.
For this function to work, you must configure CloudFront to add the
CloudFront-Viewer-Country
header to incoming requests by adding it to
the allowed headers in a cache
policy or an origin request
policy.
This example redirects the viewer to a Germany-specific URL when the viewer request
comes from Germany. If the viewer request doesn’t come from Germany, the function
returns the original, unmodified request.
This is a viewer request function.
See this example on GitHub.
- JavaScript runtime 2.0
-
async function handler(event) {
const request = event.request;
const headers = request.headers;
const host = request.headers.host.value;
const country = Symbol.for('DE'); // Choose a country code
const newurl = `https://${host}/de/index.html`; // Change the redirect URL to your choice
if (headers['cloudfront-viewer-country']) {
const countryCode = Symbol.for(headers['cloudfront-viewer-country'].value);
if (countryCode === country) {
const response = {
statusCode: 302,
statusDescription: 'Found',
headers:
{ "location": { "value": newurl } }
}
return response;
}
}
return request;
}
- JavaScript runtime 1.0
-
function handler(event) {
var request = event.request;
var headers = request.headers;
var host = request.headers.host.value;
var country = 'DE' // Choose a country code
var newurl = `https://${host}/de/index.html` // Change the redirect URL to your choice
if (headers['cloudfront-viewer-country']) {
var countryCode = headers['cloudfront-viewer-country'].value;
if (countryCode === country) {
var response = {
statusCode: 302,
statusDescription: 'Found',
headers:
{ "location": { "value": newurl } }
}
return response;
}
}
return request;
}
For more information about rewrites and redirects, see Handling rewrites and redirects using edge functions in the AWS workshop
studio.