Should it be possible to stream AND call a method on a contract at the same time?

[PaulRBerg]

In standard EVM, it is possible to transfer ETH and call a method on a contract at the same time. In SabVM, will also be possible with MNTs, i.e., it will be possible to transfer multiple tokens and call a method.

There comes a question of whether this functionality should be supported for streaming. Should we allow users to start a stream to a contract and call a method on it?

I think the sensible thing to do is to disallow such behavior:

1. Streaming implies a continuous, dynamic relationship between addresses. It's not a one-time thing. Contracts need a bespoke callback for each stream in order to their internal accounting.
2. This is an experimental feature. Starting small and in an iterative fashion is what we should do.

Related: see my proposed Solidity spec.

[IaroslavMazur]

I think the sensible thing to do is to disallow such behavior

Totally agree: while it makes total sense to be able to transfer token(s) to a contract you're calling (as you might want the contract to do smth with those tokens during the function call), creating a streaming relationship with the contract together with the function call doesn't sound like a natural thing to want to do.

I've tried to come up with specific use-cases for which this would make sense - and only thought about some fairly niche/unusual scenarios.