Thanks for your suggestion @<1523701087100473344:profile|SuccessfulKoala55> !
It sounds like retry is hard if you're not using POST. Am I interpreting this right?
POST is convenient, yeah I agree but I don't see why the rest can't retry.

It would be helpful if you could elaborate more; which behavior you're trying to control, what's the actual SW stacks and why they're on good terms with POST, why other methods won't work, etc.