Does your form render CSRF token at all? Maybe the form has no capability to render it and hence it doesn't work.

There are a couple of libraries like that: they are mostly connected with some resilience packages, but I wouldn't bother in this case (although maybe you're interested in something like resilience4j, but in my opinion that's very large framework and you need some library, like this Guava RetryingI am using it from time to time to my scripts that do some automation on AEM instances, and it does it very well. I am done with Apache HttpClient for years now in favor of some simple APIs like OkHttp ...

I am having this same problem with ACS commons - in terms of Shared Properties feature - can't configure it from Felix console. This link kautuksahni​ shared is just getting me into main page of this forum.Tried to google that problem but find nothing. This looks like AD is missing in OCD node and I am wondering if this state should be forbidden from any reason (no need to have attributes in configuration at all).