MktoForms2.allForms() returning empty in local dev environment

Question

hello
we have, somewhat customized marketo forms that we use via the javascript api.
 
now the code stopped working in local dev environment, I suspect it is related to this call:

in written words: getForm?munchkinId=MYID&... returns 403 forbidden
 
basically I am getting a 403 and MktoForms2.whenReady never triggers

MktoForms2.allForms() returns []
 
this didn't use to be like that. This used to work.
 
Obviously, for local development, I use a virtual host e.g. mylocaldev.local

it still works in production, and it still works in staging as well where we use a subdomain of production
 
maybe I got black listed because I was "spamming" marketo with my local testing?

Lukas_Meier · Accepted Answer

That seems reasonable. I don't like to use actual localhost anyway.

it seems to work fine if I use a different browser

for example I just ran a test with opera, seems to pass and load the script

Why opera, well, they have an integrated vpn. It works without vpn activated though as well..

worked on Opera Version:69.0.3686.49 on date 2020-07-8

SanfordWhiteman · Answer

It's not you, it's the... questionable (I'm being nice)... policies of CloudFlare when they flag traffic as not regular-end-user-ish.

In this case probably because of the Referer. Also happens when using a debugging proxy, which they seem to fingerprint using other means. It's absolutely frustrating but the policy is controlled centrally.

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