Starter: 539 UserCodeTimeoutError error when transformResponse is present

Issues
#1

I’m getting the following error on my site pages whenever I add transformResponse to proxy:

{
    "error": "UserCodeTimeoutError error"
}

Even if my transformResponse is just a simple log:

  proxy('origin', {
    transformResponse: (response) => {
      console.info('response.body:', response.body)
    },
  })

XDN version: 2.46.3

Has anyone been facing the issue like this before?

#2

I created a new XDN starter app with the latest version (2.46.3) and modified my proxy response with the same code you provided above and I see the response being logged and the request resolves successfully, both in dev and prod builds.

Have you tried with a minimal example like the starter app to see if the same occurs? Any additional routes in your router that may also be executing and preventing a response?

#3

This happens on one of the projects I’m working on with certain origin. Also, this is reproducible on cloud only, everything is fine locally.

#4

I’ll try reducing routes amount just to test it with minimal router.

#5

I did just test with the same starter example using the origin to example.com and it worked fine in the cloud. The console.log was also reported to the server logs so I know the transform was being executed.

Let me know if alternating your router changes the behavior.

#6

I just cleaned my routes leaving only a couple:

  • the issue is still there
  • if I switch my origin to something like example.com it works fine.
#7

Solution: XDN IPs need to be whitelisted from the origin site.
In this case origin site I worked with was under Akamai and it had some bot protection.