Only accept subscription from specific address (address whitelist)

[filips123]

Add support to make subscription plan that only accepts subscription from specific address.

This would be useful if creator of plan wants some private or limited subscription or if there is some agreement between creator or user.

[kermankohli]

Are there a fixed set of addresses? Will they be dynamic? Curious to learn more about the use case too.

[filips123]

This address should be optional (to allow any address).

But when creating a plan (with JavaScript library) there should be parameter allow (or something like this) which will specify allowed address. This could be one or more addresses.

They could be fixed, but it will be better if creator of the plan could change them later (as long with other plan data).

[kermankohli]

So something like an address whitelist where a new subscription's msg.sender has to be a part of that list?

[filips123]

@kermankohli Yes.