I'm using CloudFront with custom origin and want to redirect certain requests coming to a web app to CloudFront (clients use direct URLs, which cannot be changed to CloudFront-based URLs). In order to ensure that cache on CloudFront is updated properly, I must not redirect requests coming from CloudFront itself. Is there any way to identify such requests on origin server?
Does CloudFront add any custom headers to requests sent to origin server? Or is there any other reliable way to determine that requests is coming from CloudFront?
yes you can identify requests coming to your origin server from cloudfront by checking the useragent. the user agent would be 'Amazon CloudFront'